Manual de Mantenimiento CAT 950G

MAINTENANCE INTERVALS Operation and Maintenance Manual Excerpt

© 2010 Caterpillar

®

®

SEBU7018-08 September 2006

Operation and Maintenance Manual IT62G Integrated Toolcarrier and 950G and 962G Wheel Loaders AKP1-Up (Machine) BDP1-Up (Machine) 2JS1-Up (Machine) 3BS1-Up (Machine) 4BS1-Up (Machine) 5AS1-Up (Machine) 5RS1-Up (Machine) (Machine) 6NS1-Up (Machine) 6PS1-Up (Machine) 3JW1-Up (Machine) (Machine) 4PW1-Up (Machine) 5FW1-Up (Machine) 5MW1-Up (Machine) (Machine) 6EW1-Up (Machine) 6HW1-Up (Machine) 7BW1-Up (Machine) (Machine) 8JW1-Up (Machine)

SEBU7018-08 September 2006

Operation and Maintenance Manual IT62G Integrated Toolcarrier and 950G and 962G Wheel Loaders AKP1-Up (Machine) BDP1-Up (Machine) 2JS1-Up (Machine) 3BS1-Up (Machine) 4BS1-Up (Machine) 5AS1-Up (Machine) 5RS1-Up (Machine) (Machine) 6NS1-Up (Machine) 6PS1-Up (Machine) 3JW1-Up (Machine) (Machine) 4PW1-Up (Machine) 5FW1-Up (Machine) 5MW1-Up (Machine) (Machine) 6EW1-Up (Machine) 6HW1-Up (Machine) 7BW1-Up (Machine) (Machine) 8JW1-Up (Machine)

102 Maintenance Section Maintenance Interval Schedule

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Maintenance Maintenance Interval Interval Schedule

Seat Belt - Inspect Inspect ........................ .................................... ...................... .......... 152 Transmissio Transmission n Oil Level - Check ....................... .......................... ... 158 Windows - Clean ...................... .................................. ........................ ............... ... 160

SMCS Code: 7000

Every 50 Service Service Hours or Weekly

Ensure that all safety information, warnings, and instructions are read and understood before any operation or any maintenance procedures are performed.

Bucket Lower Pivot Bearings - Lubricate Lubricate ............. 110 Clean/Replace ....................... ............................. ...... 115 Cab Air Filter - Clean/Replace Fuel Tank Tank Water and Sediment - Drain ............... ............... 141 Hydraulic Hydraulic System Biodegradable Biodegradable Oil Filter Restriction - Check ......................... ..................................... ........................ ........................ .............. 143 Tire Inflation - Check ........................ .................................... ................... ....... 155

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The user is responsible for the performance of  maintenance, including all adjustments, the use of  proper lubricants, lubricants, fluids, filters, and the replacement of components components due t o normal wear and aging. Failure Failure to adhere to proper proper maintenance intervals and procedures procedures may result in diminished diminished performance of  the product and/or accelerated accelerated wear of components. components. Use mileage, fuel consumption, service hours, or  calendar time, WHICH EVER OCCURS FIRST, e the maintenance maintenance intervals. intervals. in order to determin d etermine Products Products that operate in severe operating conditions conditions may require more frequent maintenance. Note: Before each consecutive consecutive interval is performed, performed, all maintenance from the previous interval must be performed. performed.

When Required ................................... ........................ .............. 105 Battery - Recycle Recycle ....................... Battery or Battery Battery Cable - Inspect/Replace Inspect/Replace ........ 105 Bucket Wear Plates - Inspect/Replace Inspect/Replace ................ ................ 115 ..................................... .............. .. 116 Circuit Breakers Breakers - Reset ......................... Engine Engine Air Filter Filter Primary Primary Elemen Elementt Clean/Replace Clean/Replace ........................ .................................... ....................... .............. ... 125 Engine Air Filter Filter Secondary Element - Replace .. 127 Ether Starting Aid Cylinder - Replace ................. 135 Fuel System - Prime ........................................... 135 ............................................. ................. ..... 141 Fuses - Replace Replace ................................. Hydraulic Hydraulic System Biodegradable Biodegradable Oil Filter Element Replace Replace ....................... ................................... ........................ ........................ .............. .. 143 ........................................... ................. ..... 149 Oil Filter - Inspect Inspect ............................... Radiator Radiator Core - Clean ........................ .................................... ................. ..... 149 Ride Control Control Accumulator Accumulator - Check ..................... ..................... 151 Window Washer Washer Reservoir Reservoir - Fill ....................... .......................... ... 159 Window Wiper - Inspect/Repla Inspect/Replace ce ........................ ........................ 159

Every 10 Service Hours or Daily Backup Alarm - Test ........................... ....................................... ................. ..... 104 Bucket Cutting Edges - Inspect/Replace ............ 109 Bucket Tips - Inspect/Replace ............................. 111 Bucket Tips - Inspect/Repla Inspect/Replace ce ....................... ............................. ...... 112 Cooling System System Coolant Level - Check ............... ............... 119 Engine Air Filter Fil ter Service Indicator - Inspect ........ 127 Engine Air Precleaner - Clean ............................ 128 Engine Oil Level - Check .................................... 130 imary Filter (Water Separator) Fuel System Pr imary Drain ........................ .................................... ........................ ........................ ................. ..... 136

Every 100 Service Hours or 2 Weeks  Axle Oscillation Bearings - Lubricate ............ ...... 104 Bucket Linkage and Loader Cylinder Bearings Lubricate Lubricate ...................... .................................. ........................ ........................ .............. 109 Bucket Upper Pivot Bearings - Lubricate ............. 115 Logging Fork Clamp - Lubricate ......................... 148 Steering Cylinder Cylinder Bearings - Lubricate ............... 153

Every 250 Service Hours Engine Oil Sample Sample - Obtain ................................ 131

Every 250 Service Hours or Monthly Battery - Clean ........................... ....................................... ........................ .............. 105 Belts - Inspect/Adjus Inspect/Adjust/Replac t/Replace e ..................... ............................ ....... 106 Brake Accumulator Accumulator - Check .............................. ................................ .. 108 Braking System - Test ...................... .................................. ................... ....... 109 Differential and Final Drive Oil Level - Check ..... 123 Drive Shaft Spline (Center) - Lubricate ............... 124 Indicator Engine Air Filter  Service Indicator Inspect/Replace Inspect/Replace ....................... ................................... ........................ .............. 128 Engine Oil and Filter - Change ........................... 131

Initial 500 Hour s (for New Systems, Refilled Systems, and Converted Converted Systems) Cooling System Coolant Sample (Level 2) Obtain ....................... ................................... ........................ ........................ ................ .... 120 Refrigerant Refrigerant Dryer - Replace Replace ................................ ................................ 151

Every 500 Service Hours Cooling System Coolant Sample (Level 1) Obtain ....................... ................................... ........................ ........................ ................ .... 120 Hydraulic System System Oil Sample Sample - Obtain ............... ............... 147 Transmission Oil Sample - Obtain ...................... 159

Every 500 Service Hours or 3 Months Differential Differential and Final Drive Oil Sample - Obtain .. 123 Engine Crankcase Breather - Clean ................... 129 Fuel System Primary Prim ary Filter (Water Separator) Element - Replace ............................................ 137 Fuel System Secondary Filter Number One Replace ....................... ................................... ........................ ........................ .............. .. 138 Fuel Tank Cap and Strainer - Clean ................... 140 Hydraulic System Oil Filter - Replace ................. 146

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Every 1000 Service Hours or 6 Months  Articulation Bearings - Lubricate ......................... 104 Battery Hold-Down - Tighten ............................... 105 Drive Shaft Support Bearing - Lubricate ............. 124 Drive Shaft Universal Joints - Lubricate .............. 125 Fuel System Secondary Filter Number Two Replace ............................................................. 139 Roading Fender Hinges - Lubricate .................... 152 Rollover Protective Structure (ROPS) - Inspect .. 152 Steering Pilot Oil Screen (Command Control Steering) - Clean/Replace ................................. 154 Transmission Oil - Change ................................. 156

Every 2000 Service Hours or 1 Year  Brake Discs - Check ........................................... 108 Differential and Final Drive Oil - Change ............ 121 Engine Governor Oil Supply Screen Clean/Inspect/Replace ...................................... 130 Engine Valve Lash - Check ................................. 134 Fuel Injection Timing - Check ............................. 135 Hood Tilt Actuator - Lubricate ............................. 142 Hydraulic System Oil - Change ........................... 144 Hydraulic Tank Breaker Relief Valve - Clean ...... 148 Service Brake Disc Wear Indicator - Check ........ 153 Steering Shaft (Command Control Steering) Lubricate ........................................................... 155

Every Year  Cooling System Coolant Sample (Level 2) Obtain ............................................................... 120 Refrigerant Dryer - Replace ................................ 151

Every 3000 Service Hours or 2 Years Engine Auxiliary Air Filter - Replace ................... 129

Every 3 Years After Date of Installation or  Every 5 Years After Date of Manufacture Seat Belt - Replace ............................................. 153

Every 6000 Service Hours or 3 Years Cooling System Coolant Extender (ELC) - Add ... 118

Every 6000 Service Hours or 6 Years Cooling System Water Temperature Regulator Replace ............................................................. 121

Every 12 000 Ser vice Hours or 6 Years Cooling System Coolant (ELC) - Change ............ 116

103 Maintenance Section Maintenance Interval Schedule

104 Maintenance Section  Articulation Bearings - Lubricate

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Articulation Bearings Lubricate SMCS Code: 7057-086-BD; 7065-086-BD; 7066-086-BD

Crushing Hazard. Insure that the machine ignition switch is in the OFF position and that the parking brake is engaged before entering the articulation area. Failur e to do so could result in serious injury or death. Wipe all fittings before applying grease.

Illustration 141

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Open the access door on the right side of the machine.  Apply lubricant through two remote fittings (1) and (2). i01897507

Illustration 140

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Backup Alarm - Test (If Equipped) SMCS Code: 7406-081

 Apply grease to one fitting on the upper pivot bearing and one fitting on the lower pivot bearing. i02405757

Axle Oscillation Bearings Lubricate SMCS Code: 3268-086-BD; 3278-086-BD

Crushing Hazard. Insure that the machine ignition switch is in the OFF position and that the parking brake is engaged before entering the articulation area. Failure to do so could result in serious injury or death. Wipe off all fittings before you apply any lubricant.

Turn the engine start switch to the ON position in order to perform the test.  Apply the service brake. Place the transmission into REVERSE. The backup alarm should sound immediately. The backup alarm will continue to sound until the transmission is placed into NEUTRAL or into FORWARD.

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105 Maintenance Section Battery - Clean

 A three-position switch on the backup alarm regulates the volume of the alarm. The backup alarm is set for the highest sound level when the machine is shipped from the factory. The setting should remain on HIGH unless the job site requires a lower sound level.

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Battery Hold-Down - Tighten SMCS Code: 7257-527

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Battery - Clean SMCS Code: 1401-070

Illustration 144

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Open the battery compartment on the left rear side of the machine.

Illustration 143

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Over time, the vibration of an operating machine can cause the battery hold-down to loosen. To help to prevent loose batteries and the possibility of loose cable connections, tighten the locknut in the center of  the hold-down to a torque of 14 ± 3 N·m (10 ± 2 lb ft).

Open the battery compartment on the left rear side of  the machine. Remove the battery hold-down. Clean the battery terminals and the surfaces of  the batteries with a clean cloth. Coat the battery terminals with petroleum jelly. Make sure that the battery cables are installed securely. Replace the battery hold-down. Refer to Operation and Maintenance Manual, “Battery Hold-Down Tighten” for the correct torque. Close the battery compartment.

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Battery or Battery Cable Inspect/Replace SMCS Code: 1401-040; 1401-510; 1402-040; 1402-510

Personal injury may occur from failure to properly service the batteries.

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Battery - Recycle SMCS Code: 1401-561  Always recycle a battery. Never discard a battery.  Always return used batteries to one of the following locations:

• A battery supplier  • An authorized battery collection facility • Recycling facility

Batteries give off flammable fumes that can explode. Electrolyte is an acid and can cause personal injury if it contacts the skin or eyes. Prevent sparks near the batteries. Sparks could cause vapors to explode. Do not allow jumper cable ends to contact each other or the engine. Improper jumper cable connections can cause an explosion. Always wear protective glasses when working with batteries. 1. Turn the engine start switch key OFF. Turn all of  the switches OFF.

106 Maintenance Section Belts - Inspect/Adjust/Replace

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2. Turn the batter y disconnect switch OFF. Remove the key.

Adjusting the Tension of the Alternator  Belt

3. Disconnect the negative battery cable from the disconnect switch. Note: Do not allow the disconnected battery cable to contact the disconnect switch. 4. Disconnect the negative battery cable at the battery. 5. Disconnect the positive battery cable at the battery. 6. Inspect the battery terminals for corrosion. Inspect the battery cables for wear or damage. Illustration 145

7. Make any necessary repairs. If necessary, replace the battery cables or the battery.

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1. Loosen one mounting bolt (4) and adjustment bolt (2).

8. Connect the positive battery cable at the battery. 9. Connect the negative battery cable at the battery. 10. Connect the battery cable at the battery disconnect switch.

2. Insert a ratchet with a square drive into the hole in mounting bracket (1). Use the ratchet as a lever to rotate alternator (3). Rotate the alternator until the correct belt tension is reached. 3. Tighten adjustment bolt (2) and mounting bolt (4).

11. Install the key and turn the battery disconnect switch ON. i01908348

Belts - Inspect/Adjust/Replace

4. Recheck the tension of belt (5). If the tension of the belt is incorrect, repeat the adjustment procedure.

Air Conditioner Belt

SMCS Code: 1357-025; 1357-040; 1357-510

1. Access the compressor from the right side of the machine.

Note: Stop the engine before you perform any of the following procedures.

2. Inspect the condition of the air conditioner belt. If  the belt is cracked or frayed, replace the belt.

Alternator Belt

3. Use a BT-33-97 Borroughs Gauge to check the tension of the air conditioner belt.

1. Access the alternator from the left side of the machine. 2. Inspect the condition of the alternator belt. If the belt is cracked or frayed, replace the belt. 3. Use a BT-33-97 Borroughs Gauge to check the tension of the alternator belt. The tension of a used belt with more than 30 minutes of operation at rated speed should be 400 ± 44 N (90 ± 10 lb). The tension of a new belt with 30 minutes of operation or less at rated speed should be 534 ± 22 N (120 ± 5 lb).

Earlier Machines ( 1W-9693 V-Belt) The tension of a used belt with more than 30 minutes of operation at rated speed should be 400 ± 44 N (90 ± 10 lb). The tension of a new belt with 30 minutes of operation or less at rated speed should be 534 ± 22 N (120 ± 5 lb). Later Machines (1P-4334 V-Belt) The tension of a used belt with more than 30 minutes of operation at rated speed should be 445 ± 44 N (100 ± 10 lb). The tension of a new belt with 30 minutes of operation or less at rated speed should be 712 ± 22 N (160 ± 5 lb).

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107 Maintenance Section Belts - Inspect/Adjust/Replace

Adjusting the Tension of the Air  Conditioner Belt

Illustration 146

Adjusting the Tension of the Water Pump Drive Belt

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Illustration 147

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1. Loosen one mounting bolt (10) and adjustment bolt (6).

1. Loosen one mounting bolt (14) and adjustment bolt (12).

2. Insert a ratchet with a square drive into the hole in mounting bracket (7). Use the ratchet as a lever  to rotate compressor (8). Rotate the compressor  until the correct belt tension is reached.

2. Insert a ratchet with a square drive into the hole in mounting bracket (15). Use the ratchet as a lever  to rotate water pump (11). Rotate the water pump until the correct belt tension is reached.

3. Tighten adjustment bolt (6) and mounting bolt (10).

3. Tighten adjustment bolt (12) and mounting bolt (14).

4. Recheck the tension of belt (9). If the tension of the belt is incorrect, repeat the adjustment procedure.

Water Pump Drive Belt 1. Open the engine hood in order to access the water pump drive belt. 2. Inspect the condition of the water pump drive belt. If the belt is cracked or frayed, replace the belt. 3. Use a BT-33-97 Borroughs Gauge to check the tension of the water pump drive belt. The tension of a used belt with more than 30 minutes of operation at rated speed should be 400 ± 44 N (90 ± 10 lb). The tension of a new belt with 30 minutes of operation or less at rated speed should be 534 ± 22 N (120 ± 5 lb).

4. Recheck the tension of belt (13). If the tension of the belt is incorrect, repeat the adjustment procedure.

Belt for the Axle Oil Cooler Pump (If Equipped) 1. Open the engine hood in order to access the axle oil cooler pump. 2. Inspect the condition of the belt. If the belt is cracked or frayed, replace the belt. 3. Use a BT-33-97 Borroughs Gauge to check the tension of the belt. The tension of a used belt with more than 30 minutes of operation at rated speed should be 400 ± 44 N (90 ± 10 lb). The tension of a new belt with 30 minutes of operation or less at rated speed should be 534 ± 22 N (120 ± 5 lb).

108 Maintenance Section Brake Accumulator - Check

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Adjusting the Tension of the Belt for the Axle Oil Cooler Pump

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Brake Accumulator - Check SMCS Code: 4263-535

Illustration 149

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1. Turn the engine start switch to the ON position. The alert indicator for brake oil pressure should come on if the braking system is not at normal operating pressure.

Illustration 148

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1. Loosen one mounting bolt (17) and adjustment bolt (18). 2. Insert a ratchet with a square drive into the hole in mounting bracket (19). Use the ratchet as a lever  to rotate axle oil cooler pump (20). Rotate the axle oil cooler pump until the correct belt tension is reached. 3. Tighten adjustment bolt (18) and mounting bolt (17).

2. Start the engine. Run the engine at half speed for  two minutes in order to increase the accumulator  pressure. The alert indicator for brake oil pressure should go off. 3. Stop the engine. Apply the service brake pedal and release the service brake pedal until the alert indicator for brake oil pressure comes on. This will decrease the accumulator pressure. A minimum of five applications of the service brake pedal are required. 4. If the alert indicator comes on after less than five applications of the brake, measure the accumulator precharge pressure. An authorized Caterpillar dealer can measure the nitrogen gas pressure in the accumulator. Use only dry nitrogen gas for recharging.

4. Recheck the tension of belt (16). If the tension of the belt is incorrect, repeat the adjustment procedure.

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Brake Discs - Check SMCS Code: 4255-535 Reference: For the correct procedure, refer to the Testing and Adjusting Service Manual of the braking system for your machine or consult your Caterpillar  dealer.

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109 Maintenance Section Braking System - Test

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Braking System - Test

If both sides ar e worn, install a new cutting edge. 6. Install bolts (1). Tighten the bolts to the specified torque.

SMCS Code: 4251-081; 4267-081 In order to test the braking system, refer to theTesting and Adjusting Service Manual of the braking system for your machine or consult your Caterpillar dealer. i02196469

Bucket Cutting Edges Inspect/Replace

Reference: Refer to Specifications, SENR3130, “Ground Engaging Tool (G.E.T.) Fasteners”. 7. Start the engine. Raise the bucket and remove the blocking. Lower the bucket to the ground. 8. After a few hours of operation, check the bolts for  proper torque. i01897623

SMCS Code: 6801-040; 6801-510

Bucket Linkage and Loader  Cylinder Bearings - Lubricate

Personal injury or death can result from bucket falling.

SMCS Code: 5102-086-BD; 5104-086-BD; 6107-086-BD

Block the bucket before changing bucket cutting edges.

Integrated Toolcarrier  Wipe off all of the fittings before you apply any lubricant.

Illustration 150

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Check the cutting edges and the end bits for wear  and for damage. Use the following procedure to service the cutting edges and the end bits: 1. Raise the bucket and place blocking under the bucket. 2. Lower the bucket onto the blocking. Stop the engine.

Illustration 151

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 Apply lubricant through twelve fittings on each side of the machine. There are a total of 24 fittings.

Wheel Loader  Wipe off all fittings before any lubricant is applied.

3. Remove bolts (1), cutting edge (2) and the end bits. 4. Clean all contact surfaces. 5. If the opposite side of the cutting edge is not worn, use the opposite side of the cutting edge. The end bits are not reversible.

110 Maintenance Section Bucket Lower Pivot Bearings - Lubricate

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Bucket Lower Pivot Bearings - Lubricate SMCS Code: 6101-086-BD; 6107-086-BD S/N: BDP1-Up S/N: 2JS1-Up S/N: 3BS1-Up S/N: 4BS1-Up Illustration 152

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S/N: 5AS1-Up S/N: 5RS1-Up

 Apply lubricant through fittings (2) and (3) on both lift cylinders. Apply lubricant through fittings (5), (6) and (7).

S/N: 6NS1-Up S/N: 3JW1-Up S/N: 4PW1-Up S/N: 5FW1-Up S/N: 5MW1-Up S/N: 6EW1-Up S/N: 6HW1-Up S/N: 7BW1-Up S/N: 8JW1-Up

Illustration 153

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For pin joint (1), apply lubricant through one remote fitting on each side of the machine.

Illustration 154

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For pin joint (4), apply lubricant through a remote fitting on the right side of the machine. Use the fitting that is toward the front of the machine.

Illustration 155

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Wipe off all fittings before any lubricant is applied.  Apply lubricant through one fitting on each side of  the machine.

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111 Maintenance Section Bucket Tips - Inspect/Replace

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Bucket Tips - Inspect/Replace SMCS Code: 6805-040; 6805-510 S/N: BDP1-Up S/N: 2JS1-Up

Personal injury or death can result from the bucket falling. Block the bucket before changing bucket tips.

Illustration 157

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(4) Back of Pin-Master  (5) Extractor 

Bucket Tips

a. Place the Pin-Master on the bucket tooth. b. Align extractor (5) with the pin. c. Strike the Pin-Master at the back of the tool (4) and remove the pin.

Illustration 156

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(1) Usable (2) Replace (3) Replace

Check the bucket tips for wear. If the bucket tip has a hole, replace the bucket tip.

Illustration 158

1. Remove the pin from the bucket tip. The pin can be removed by one of the following methods.

(6) Retainer  (7) Retaining washer  (8) Adapter 

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• Use a hammer and a punch from the retainer 

2. Clean the adapter and the pin.

• Use a Pin-Master. Follow Step 1.a through Step

3. Fit retainer (6) into retaining washer (7). Install this assembly into the groove that is in the side of adapter  (8).

side of the bucket to drive out the pin. 1.c for the procedure.

112 Maintenance Section Bucket Tips - Inspect/Replace

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c. Strike the tool with a hammer at the back of the tool (4) in order to start the pin. d. Slide pin holder (10) away from the pin and rotate the tool slightly in order to align pin setter  (9) with the pin. e. Strike the end of the tool until the pin is fully inserted. 6. After you drive the pin, make sure that the retainer  fits snugly into the pin groove. i02421156

Illustration 159

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4. Install the new bucket tip onto the adapter. Note: The bucket tip can be rotated by 180 degrees in order to allow greater penetration or less penetration. 5. Drive the pin through the bucket tip. The pin can be installed by using one of the following methods:

• From the other side of the retainer, drive the

pin through the bucket tip, the adapter, and the retainer.

Bucket Tips - Inspect/Replace SMCS Code: 6805-040; 6805-510 S/N: AKP1-Up S/N: 2JS1-Up S/N: 3BS1-Up S/N: 4BS1-Up S/N: 5AS1-Up S/N: 5RS1-Up

•

Use a Pin-Master. Follow Step 5.a through Step 5.e for the procedure.

Note: To correctly install the pin into the retainer, the pin must be driven in from the right side of the tooth. Improper installation of the pin can result in the loss of the bucket tip.

S/N: 6NS1-Up S/N: 3JW1-Up S/N: 4PW1-Up S/N: 5FW1-Up S/N: 5MW1-Up S/N: 6EW1-Up S/N: 6HW1-Up S/N: 7BW1-Up S/N: 8JW1-Up

Personal injury or death can result from the bucket falling. Illustration 160

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(4) Back of Pin-Master  (9) Pin setter  (10) Pin holder 

a. Insert the pin through the bucket tooth. b. Place the Pin-Master over the bucket tooth and locate the pin in the hole of holder (10).

Block the bucket before changing bucket tips.

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113 Maintenance Section Bucket Tips - Inspect/Replace

Personal injury can result from driving out retainer  pins. Retainer pins, when struck with force can fly out and cause injury to nearby people. Make sure the area is clear of people when driving out retainer pins. Wear protective glasses when striking a retainer  pin. Illustration 162

Bucket Tips

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Improper installation

By driving from the right side of the adapter, the retainer is properly supported by the counterbore of  the adapter. This procedure will show that the pin chamfer is centered in the inside diameter of the retainer more clearly.

Illustration 161

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(1) Usable (2) Replace this bucket tip. (3) Overworn

Check the bucket tips for wear. If the bucket tip has a hole, replace the bucket tip. The loss of bucket tips can often be attributed to the improper installation of the retaining pin into the tip and the adapter. Bucket tips are lost more frequently on excavators because the tips are closer  together. Inserting the pin from the correct side (right side) of the adapter is difficult due to the small gap. More clearance can be obtained by installing the pin through the tip and the adapter from the left side, and then by driving the pin against the retainer. This procedure will often cause the spiral retainer to become distorted, resulting in either a loss of retainer  grip or an increased difficulty in removing the pin.

Illustration 163

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Proper installation Install pin from the right side.

1. Remove the pin from the bucket tip. The pin can be removed by one of the following methods:

• Use a hammer and a punch from the retainer  side of the bucket to drive out the pin.

• Use a Pin-Master. Follow Step 1.a through Step 1.c for the procedure.

a. Place the Pin-Master on the bucket tooth. b. Align extractor (5) with the pin. c. Strike the Pin-Master at the back of the tool (4) and remove the pin.

114 Maintenance Section Bucket Tips - Inspect/Replace

Illustration 164

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(6) Retainer  (7) Retaining Washer  (8) Adapter 

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Illustration 166 (4) Back of Pin-Master  (9) Pin setter  (10) Pin holder 

2. Clean the adapter and the pin.

a. Insert the pin through the bucket tooth.

3. Fit retainer (6) into retaining washer (7). Install this assembly into the groove that is in the side of the adapter (8).

b. Place the Pin-Master over the bucket tooth and locate the pin in the hole of the holder (10). c. Strike the tool with a hammer at the back of the tool (4) in order to start the pin. d. Slide pin holder (10) away from the pin and rotate the tool slightly in order to align pin setter  (9) with the pin. e. Strike the end of the tool until the pin is fully inserted. 6. After you drive the pin, make sure that the retainer  fits snugly into the pin groove.

Illustration 165

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The tools that are available for driving the pins are shown in Table 13. Table 13

4. Install the new bucket tip into the adapter.

Size of the Tip

Pin Remover  

Note: The bucket tip can be rotated by 180 degrees in order to allow greater penetration or less penetration.

J200, J225

143-2459

J250, J300, J350

143-2460

5. Drive the pin through the bucket tip. The pin can be installed by using one of the following methods:

J350, J400, J460

196-1331

J550

203-4290

• From the other side of the retainer, drive the pin through the following components: the bucket tip, the adapter, and the retainer.

• Use a Pin-Master. Follow Step 5.a through Step 5.e for the procedure.

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115 Maintenance Section Bucket Upper Pivot Bearings - Lubricate

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Bucket Upper Pivot Bearings - Lubricate

Bucket Wear Plates Inspect/Replace

SMCS Code: 6101-086-BD; 6107-086-BD

SMCS Code: 6120-040; 6120-510

S/N: BDP1-Up S/N: 2JS1-Up Personal injury or death can result from the bucket falling.

S/N: 3BS1-Up S/N: 4BS1-Up

Block the bucket before changing bucket wear  plates.

S/N: 5AS1-Up S/N: 5RS1-Up S/N: 6NS1-Up S/N: 3JW1-Up S/N: 4PW1-Up S/N: 5FW1-Up S/N: 5MW1-Up S/N: 6EW1-Up S/N: 6HW1-Up S/N: 7BW1-Up

Illustration 168

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S/N: 8JW1-Up Inspect the wear plates. Replace the wear plates before damage to the bottom of the bucket occurs. Consult your Caterpillar dealer for replacement of  wear plates. i01908538

Cab Air Filter - Clean/Replace SMCS Code: 7342-070; 7342-510 Note: Clean the cab air filters more often if the machine is being operated in dusty conditions.

Illustration 167

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Wipe off the fitting before any lubricant is applied.  Apply lubricant through the fitting.

116 Maintenance Section Circuit Breakers - Reset

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1. Remove the filter cover behind the seat. Remove the filter element. 2. Open the access door on the left side of the cab. Remove the filter element. 3. Clean the filter elements with pressure air or  wash the filter elements in warm water with a nonsudsing household detergent. 4. If water and detergent are used to clean the filter  elements, rinse the filter elements in clean water  and allow the filter elements to air dry thoroughly. Note: If either filter element is damaged, install a new filter element.

Illustration 171

5. Install the filter elements. Install the filter cover  and close the access door.

Two circuit breakers are located on the right side of  the engine compartment below the air cleaner.

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Main Circuit (3) – 80 amp i01908608

Circuit Breakers - Reset Alternator (4) – 80 amp

SMCS Code: 1420-529 Circuit Breaker Reset – Push the button in order to reset the circuit breakers. The button will stay depressed if the circuit is working properly. Check the appropriate electrical circuit if the button does not stay depressed.

i01898004

Cooling System Coolant (ELC) - Change SMCS Code: 1350-044-NL

Pressurized system: Hot coolant can cause serious burn. To open cap, stop engine, wait until radiator is cool. Then loosen cap slowly to relieve the pressure.

Illustration 170

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Circuit breakers are located on the fuse panel at the rear of the cab. Fan Motor  (1) – 15 amp

Seat Air Compressor (2) – 15 amp

NOTICE Care must be taken to ensure that fluids are contained during perf ormance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, “Caterpillar  Tools and Shop Products Guide” for tools and supplies suitable to collect and contain fluids on Caterpillar  products. Dispose of all fluids according to local regulations and mandates.

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117 Maintenance Section Cooling System Coolant (ELC) - Change

NOTICE Topping off or mixing Cat ELC with other products that do not meet Caterpillar EC-1 specifications reduces the effectiveness of the coolant and shortens coolant service life.

1. Slowly loosen cooling system pressure cap (1) in order to relieve system pressure.

Use only Caterpillar products or commercial products that have passed the Caterpillar EC-1 specification for  pre-mixed or concentrate coolants. Use only Extender  with Cat ELC. Failure to follow these recommendations can result in shortened cooling system component life. Reference: For information about the addition of  Extender to your cooling system, see Operation and Maintenance Manual, “Cooling System Coolant Extender (ELC) - Add” or consult your Caterpillar  dealer. If an Extended Life Coolant was previously used, flush the cooling system with clean water. No other  cleaning agents are required. Use the following procedure to change the Extended Life Coolant.

Illustration 174

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2. Open drain valve (2) on the bottom of the radiator. Drain valve (2) can be accessed from the left side of the machine. Allow the coolant to drain into a suitable container. 3. Flush the cooling system with clean water until the draining water is clean. Close drain valve (2). 4. Replace the water temperature regulator at this time. Reference: Refer to Operation and Maintenance Manual, “Cooling System Water Temperature Regulator - Replace”.

Illustration 172

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The cooling system pressure cap is located under  the hood at the rear of the machine.

Reference: Refer to Disassembly and Assembly, SENR3611, “3126 Engines for Caterpillar Built Machines”. 5. Add the Extended Life Coolant. Reference: Refer to Operation and Maintenance Manual, “Capacities (Refill)” for the refill capacity of the cooling system. 6. Start the engine. Run the engine without the cooling system pressure cap until the water  temperature regulator opens and the coolant level stabilizes.

Illustr ation 173

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118 Maintenance Section Cooling System Coolant Extender (ELC) - Add

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NOTICE Topping off or mixing Cat ELC with other products that do not meet Caterpillar EC-1 specifications reduces the effectiveness of the coolant and shortens coolant service life. Use only Caterpillar products or commercial products that have passed the Caterpillar EC-1 specification for  pre-mixed or concentrate coolants. Use only Extender  with Cat ELC. Failure to follow these recommendations can result in shortened cooling system component life. Illustration 175

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7. Maintain the coolant level in sight gauge (3) on the upper right side of the radiator. 8. Install pressure cap (1). Stop the engine.

When a Caterpillar Extended Life Coolant (ELC) is used, an Extender must be added to the cooling system. Use a 8T-5296 Coolant Test Kit to check the concentration of the coolant.

i01898080

Cooling System Coolant Extender (ELC) - Add

Reference: For additional information about the addition of Extender, refer to Special Publication, SEBU6250, “Caterpillar Machine Fluids Recommendations” or consult your Caterpillar dealer.

SMCS Code: 1352-544-NL

Pressurized system: Hot coolant can cause serious burn. To open cap, stop engine, wait until radiator is cool. Then loosen cap slowly to relieve the pressure. NOTICE Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, “Caterpillar  Tools and Shop Products Guide” for tools and supplies suitable to collect and contain fluids on Caterpillar  products. Dispose of all fluids according to local regulations and mandates.

Illustration 176

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The cooling system pressure cap is located under the engine hood at the rear of the machine. Tilt the hood in order to access the cooling system pressure cap.

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119 Maintenance Section Cooling System Coolant Level - Check

i01898095

Cooling System Coolant Level - Check SMCS Code: 1350-535-FLV

Pressurized system: Hot coolant can cause serious burn. To open cap, stop engine, wait until radiator is cool. Then loosen cap slowly to relieve the pressure. Illustration 177

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1. Slowly loosen cooling system pressure cap (1) in order to relieve any system pressure. Remove the cooling system pressure cap.

Illustration 179

Illustration 178

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2. If necessary, drain enough coolant from the radiator in order to allow the addition of the Extender to the cooling system. Cooling system drain valve (2) is located on the lower left side of  the radiator. 3. Add 1.18 L (40 fl oz) of Extender to the cooling system. 4. Check the coolant level. Reference: Refer to Operation and Maintenance Manual, “Cooling System Coolant Level - Check” for the correct procedure. 5. Install pressure cap (1). Close the engine hood.

Illustration 180

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Open the access door on the right side of the machine. Coolant level sight gauge (1) is located on the right front side of the radiator. Maintain the coolant level within sight gauge(1). Add coolant, if necessary. Note: If it is necessary to add coolant daily, inspect the cooling system for leaks.

120 Maintenance Section Cooling System Coolant Sample (Level 1) - Obtain

i01901890

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• Keep the unused sampling bottles stored in plastic bags.

Cooling System Coolant Sample (Level 1) - Obtain

• Obtain coolant samples directly from the coolant sample port. You should not obtain the samples from any other location.

SMCS Code: 1350-008; 1395-008; 7542 NOTICE Do not use the same vacuum sampling pump for extracting oil samples that is used for extracting coolant samples.  A small residue of either type sample may remain in the pump and may cause a false positive analysis for  the sample being taken.  Always use a designated pump for oil sampling and a designated pump for coolant sampling. Failure to do so may cause a false analysis which could lead to customer and dealer concerns. Note: Level 1 results may indicate a need for  Level 2 Analysis.

• Keep the lids on empty sampling bottles until you are ready to collect the sample.

• Place the sample in the mailing tube immediately after obtaining the sample in order to avoid contamination.

• Never collect samples from expansion bottles. • Never collect samples from the drain for a system. Submit the sample for Level 1 analysis. For additional information about coolant analysis, see Special Publication, SEBU6250, “Caterpillar Machine Fluids Recommendations” or consult your Caterpillar  dealer. i01901920

Cooling System Coolant Sample (Level 2) - Obtain SMCS Code: 1350-008; 1395-008; 7542 NOTICE Do not use the same vacuum sampling pump for extracting oil samples that is used for extracting coolant samples.

Illustration 181

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Note: The cooling system is not equipped with a sampling valve. Use a vacuum pump in order to obtain a sample of the coolant. Withdraw the coolant through filler cap (1) on the top of the radiator. Obtain the sample of the coolant as close as possible to the recommended sampling interval. In order  to receive the full effect of S·O·S analysis, you must establish a consistent trend of data. In order  to establish a pertinent history of data, perform consistent samplings that are evenly spaced. Supplies for collecting samples can be obtained from your Caterpillar dealer. Use the following guidelines for proper sampling of  the coolant:

• Complete the information on the label for the sampling bottle before you begin to take the

 A small residue of either type sample may remain in the pump and may cause a false positive analysis for  the sample being taken.  Always use a designated pump for oil sampling and a designated pump for coolant sampling. Failure to do so may cause a false analysis which could lead to customer and dealer concerns.

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121 Maintenance Section Cooling System Water Temperature Regulator - Replace

NOTICE Caterpillar engines incorporate a shunt design cooling system and require operating the engine with a thermostat installed. If the thermostat is installed wrong, it will cause the engine to overheat. Inspect gaskets before assembly and replace if  worn or damaged. Replace the water temperature regulator in order  to reduce the chance of problems with the cooling system. Illustration 182

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Note: The cooling system is not equipped with a sampling valve. Use a vacuum pump in order to obtain a sample of the coolant. Withdraw the coolant through filler cap (1) on the top of the radiator. Obtain the sample of the coolant as close as possible to the recommended sampling interval. Supplies for collecting samples can be obtained from your  Caterpillar dealer. Refer to Operation and Maintenance Manual, “Cooling System Coolant Sample (Level 1) - Obtain” for the guidelines for proper sampling of the coolant.

Replace the water temperature regulator and replace the seals while the cooling system is completely drained or while the coolant is drained to a level that is below the water temperature regulator housing. Note: If you are only replacing the water temperature regulator, drain the coolant to a level that is below the water temperature regulator housing. Reference: Refer to Disassembly and Assembly, SENR3611, “3126 Engines for Caterpillar Built Machines” for the correct procedure for replacing the water temperature regulator. i02441594

Submit the sample for Level 2 analysis. Reference: For additional information about coolant analysis, refer to Special Publication, SEBU6250, “Caterpillar Machine Fluids Recommendations” or  consult your Caterpillar dealer. i01898114

Cooling System Water  Temperature Regulator Replace

Differential and Final Drive Oil - Change SMCS Code: 3278-044; 4011-044 NOTICE Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting andrepair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.

SMCS Code: 1355-510; 1393-010

Refer to Special Publication, NENG2500, “Caterpillar  Dealer Service Tool Catalog” for tools and supplies suitable to collect and contain fluids on Caterpillar  products.

Pressurized system: Hot coolant can cause serious burn. To open cap, stop engine, wait until radiator is cool. Then loosen cap slowly to relieve the pressure.

Dispose of all fluids according to local regulations and mandates.

NOTICE Failure to replace the engine’s thermostat on a regularly scheduled basis could cause severe engine damage.

122 Maintenance Section Differential and Final Drive Oil - Change

Illustration 183

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Machine without axle oil cooler 

Illustration 184

Illustration 185

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Dipstick/fill plug for the front axle

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Illustration 186

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Machine with axle oil cooler 

Dipstick/fill plug for the rear axle

Note: The axle housings are equipped with ecology drain valves.

4. Wipe off the dipstick/fill plugs and the surfaces around the dipstick/fill plugs.

1. Remove the drain plugs. Attach a hose to a suitable drain adapter. Install a drain adapter into each drain valve. Allow the oil to drain into a suitable container.

5. Remove the dipstick/fill plugs. Add 0.5 L (0.5 qt) of  1U-9891 Hydraulic Oil Additive to each axle. Fill the axles with oil.

2. Remove the drain adapters from the drain valves. 3. Clean the drain plugs and install the drain plugs.

Reference: Refer to Operation and Maintenance Manual, “Lubricant Viscosities and Refill Capacities” for the type of lubricant and for the refill capacity. 6. Clean the dipstick/fill plugs and install the dipstick/fill plugs. 7. Run the machine on level ground for a few minutes in order to equalize the oil level in the axle. Check the oil level in the axle. Reference: Refer to Operation and Maintenance Manual, “Differential and Final Drive Oil Level Check” for the correct procedure.

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123 Maintenance Section Differential and Final Drive Oil Level - Check

i01902117

Differential and Final Drive Oil Level - Check SMCS Code: 3278-535-FLV; 4011-535-FLV Note: Before you measure the oil level, operate the machine for a few minutes in order to equalize the oil level. 1. Park the machine on level ground. Lower the bucket and apply slight downward pressure. Engage the parking brake. Stop the engine.

3. Remove the dipstick/fill plug again and check the oil level. Maintain the oil level between the ADD mark and the FULL mark. Add oil, if necessary. Reference: Refer to Operation and Maintenance Manual, “Lubricant Viscosities and Refill Capacities” for the type of lubricant and for the refill capacity. 4. Clean the plug and install the plug. 5. Repeat Step 2 through Step 4 for the rear axle. i01902178

Differential and Final Drive Oil Sample - Obtain SMCS Code: 3278-008; 4011-008; 4070-008; 7542 NOTICE Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Illustration 187

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Dipstick/fill plug for the front axle

Refer to Special Publication, NENG2500, “Caterpillar  Tools and Shop Products Guide” for tools and supplies suitable to collect and contain fluids on Caterpillar  products. Dispose of all fluids according to local regulations and mandates. 1. Operate the machine for a few minutes before obtaining the oil sample. This will thoroughly mix the differential oil for a more accurate sample.

Illustration 188

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Dipstick/fill plug for the rear axle

2. Remove the dipstick/fill plug. Wipe off the level gauge with a clean cloth and reinsert the plug. This will ensure a more accurate measurement of the oil level. Note: Make sure that the plug is installed completely before you check the oil level. If the plug is not installed completely, an incorrect oil level reading can occur.

Illustration 189 Dipstick/fill plug for the front axle

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124 Maintenance Section Drive Shaft Spline (Center) - Lubricate

Illustration 190

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Dipstick/fill plug for the rear axle

2. The differential and final drives are not equipped with sampling valves. Obtaining an oil sample will require the use of a vacuum pump or equivalent in order to extract the oil from the component. Extract the oil through the filler openings on the differential and final drives. 3. Complete any additional required work. Fill the differential and final drives with oil, as required. Install the dipstick/fill plugs. Reference: For more information, refer to Special Publication, SEBU6250, “Caterpillar Machine Fluids Recommendations”, “S·O·S Oil Analysis” and Special Publication, PEHP6001, “How To Take A Good Oil Sample”.

Illustration 191

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 Apply lubricant through the fitting for the center drive shaft spline. i02407816

Drive Shaft Support Bearing Lubricate SMCS Code: 3267-086-BD

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Drive Shaft Spline (Center) Lubricate SMCS Code: 3253-086-SN Note: For better access to the fitting, articulate the machine to the right or to the left. Since the steering frame lock cannot be connected in this case, remove the engine start switch key and turn the battery disconnect switch to the OFF position.

Crushing Hazard. Insure that the machine ignition switch is in the OFF position and that the parking brake is engaged before entering the articulation area. Failure to do so could result in serious injury or death. Wipe off the fitting before any lubricant is applied.

Wipe off the fitting before you apply any lubricant.

Illustration 192

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125 Maintenance Section Drive Shaft Universal Joints - Lubricate

 Apply lubricant through the remote fitting on the right side of the machine. Use the fitting that is toward the rear of the machine. i01119388

Drive Shaft Universal Joints Lubricate

i01902270

Engine Air Filter Primary Element - Clean/Replace SMCS Code: 1054-070-PY; 1054-510-PY

To avoid personal injury, always wear eye and face protection when using pressurized air.

SMCS Code: 3251-086 S/N: AKP1-Up S/N: 2JS1-Up

NOTICE Caterpillar recommends certified air filter cleaning services that are available at Caterpillar dealers. The Caterpillar cleaning process uses proven procedures to assure consistent quality and sufficient filter life.

S/N: 3BS1-Up S/N: 4BS1-Up S/N: 5AS1-Up

Observe the following guidelines if you attempt to clean the filter element:

S/N: 5RS1-Up S/N: 6NS1-Up S/N: 6PS1-Up

Do not tap or strike the filter element in order to remove dust.

S/N: 3JW1-Up

Do not wash the filter element.

S/N: 4PW1-Up

Use low pressure compressed air in order to remove the dust from the filter element. Air pressure must not exceed 207 kPa (30 psi). Direct the air flow up the pleats and down the pleats from the inside of the filter  element. Take extreme care in order to avoid damage to the pleats.

S/N: 5FW1-Up S/N: 5MW1-Up S/N: 6EW1-Up S/N: 6HW1-Up

Do not use air filters with damaged pleats, gaskets, or  seals. Dirt entering the engine will cause damage to engine components.

S/N: 7BW1-Up S/N: 8JW1-Up Wipe off all fittings before any lubricant is applied.

NOTICE Service the air filter only with the engine stopped. Engine damage could result. 1. Open the engine compartment. The air filter is located on the right side of the machine.

Illustration 193

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 Apply lubricant through one fitting on each universal  joint. There is a total of five fittings.

126 Maintenance Section Engine Air Filter Primary Element - Clean/Replace

2. Loosen the cover latches and remove the air  cleaner cover. Note: The latches for the air cleaner housing may snap open when you release the latches.

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6. When you clean the primary element, always begin in the inside of the element (clean side). This will force dirt particles toward the outside of  the element (dirty side). Direct the air along the length (inside) of the filter. This will help prevent damage to the paper pleats. Note: Do not aim the stream of air directly at the primary element. Dirt could be forced further into the pleats. Use Steps 7 through 10 in order to inspect the primary element:

Illustration 195

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3. Remove the primary filter element from the air  cleaner housing. In order to remove the engine air  filter primary element, pull the element outward. While you pull the element outward, rock the element. Use Steps 4 through 6 in order to clean the primary element: 4. Inspect the primary element. If the pleats, the gaskets, or the seals are damaged, discard the element. Replace a damaged primary element with a clean primary element.

Illustration 197

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7. Place a light bulb inside the filter element. Use a 60 watt blue light in a dark room or in a similar  facility. Inspect the primary element for light that may show through the filter material. 8. Inspect the primary element while you rotate the element. Inspect the primary element for tears and/or holes. Do not use a primary element that has any tears and/or holes in the filter material. Do not use a primary element with damaged pleats, gaskets, or seals. 9. If it is necessary, compare the primary element to a new primary element. Use a new primary element that has the same part number. This may be necessary in order to confirm the results of the inspection.

Illustr ation 196

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5. If the primary element is not damaged, clean the primary element. Pressurized air can be used to clean a primary element that has not been cleaned more than two times. Use filtered, dry air at a maximum pressure of 207 kPa (30 psi). Note: Pressurized air will not remove deposits of 

10. Discard a damaged primary element. Use Steps 11 through 13 to install a clean primary element: NOTICE Do not use a filter if the pleats, the gaskets or the seals are damaged.

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127 Maintenance Section Engine Air Filter Secondary Element - Replace

11. Install a clean primary filter element over the engine air filter secondary element. Apply firm pressure to the end of the primary element as you gently rock the filter element. This seats the primary element.

4. Cover the air inlet opening. Clean the inside of  the air filter housing. 5. Inspect the gasket between the air inlet pipe and the air filter housing. Replace the gasket if the gasket is damaged.

12. Clean the cover for the air cleaner housing. Align the slot on the cover with the pin on the air cleaner  housing. Install the cover.

6. Uncover the air inlet opening. Install a new secondary filter element.

13. Close the engine.

7. Install the primary filter element. i01902345

Engine Air Filter Secondary Element - Replace

8. Clean the cover of the air filter housing and install the cover on the air filter housing. Fasten the clips in order to secure the cover on the air filter  housing.

SMCS Code: 1054-510-SE NOTICE  Always replace the secondary filter element. Never  attempt to reuse it by cleaning. The secondary filter element should be replaced at the time the primary element is serviced for the third time. The secondary filter element should also be replaced if the yellow piston in the filter element indicator enters the red zone after installation of a clean primary element, or if the exhaust smoke is still black. 1. Open the engine hood. The air filter is located on the right side of the machine. 2. Remove the primary element from the air filter  housing. Illustration 199

Note: Refer to Operation and Maintenance Manual, “Engine Air Filter Primary Element - Clean/Replace ” for the procedure to remove the primary filter element.

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9. Reset the filter element indicator. 10. Close the engine hood. i01902363

Engine Air Filter Service Indicator - Inspect SMCS Code: 7452-040 NOTICE Service the air cleaner only with the engine stopped. Engine damage could result.

Illustration 198

3. Remove the secondary filter element.

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Open the access door on the right side of the machine in order to access the service indicator.

128 Maintenance Section Engine Air Filter Service Indicator - Inspect/Replace

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Next, check the movement of the yellow piston in the service indicator. Start the engine and accelerate the engine to high idle for a few seconds. After  the governor control pedal is released, the yellow piston should remain at the highest position that was achieved during acceleration. If either of these conditions are not met, replace the service indicator. i01438467

Engine Air Precleaner - Clean SMCS Code: 1055-070

Illustration 200

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Service the air cleaner when the yellow piston in the service indicator is in the red zone. The service indicator can be checked when the engine is running or stopped. i01902376

Engine Air Filter Service Indicator - Inspect/Replace SMCS Code: 7452-040; 7452-510

Illustration 202

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NOTICE Service the air cleaner only with the engine stopped. Engine damage could result. 1. Remove the precleaner. 2. Inspect the air inlet screen for dirt and for trash. Remove the screen. Clean the screen if the screen is dirty. 3. Inspect the precleaner tube openings. Remove dirt and debris. 4. Clean the precleaner with compressed air or wash the precleaner in warm water. Dry all the parts. 5. Install the precleaner screen.

Illustration 201

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To check the condition of the service indicator, try resetting the service indicator. This should require

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129 Maintenance Section Engine Auxiliary Air Filter - Replace

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Engine Auxiliary Air Filter Replace (If Equipped) SMCS Code: 1054-070-AX; 1054-510-AX Some machines may be equipped with an auxiliary air filter that is located behind the main air filter  housing. Use the following procedure to replace the auxiliary air filter.

i01908770

Engine Crankcase Breather Clean SMCS Code: 1317-070 1. Open the engine hood. The engine crankcase breather is located on the right side of the machine.

1. Remove four bolts and the access plate on the engine hood.

Illustration 204

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2. Loosen the hose clamp and remove outlet hose (3) from breather (1). Illustration 203

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Side view of the auxiliary air filter housing

2. Remove four nuts (1) and access cover (2) from the top of auxiliary air filter housing (3).

3. Remove bolt (2) and the breather. 4. Check the condition of the seal on the breather  cover. Replace the seal if the seal is damaged. 5. Wash the breather cover and the element in a clean, nonflammable solvent.

3. Remove the auxiliary air filter element. 4. Cover air outlet (4). Clean the inside of the auxiliary air filter housing. 5. Uncover the air outlet. Install a new auxiliary air  filter element.

6. Shake the element dry or use pressure air to dry the element. 7. Inspect the outlet hose for damage. Replace the hose, if necessary. 8. Install breather (1) and bolt (2).

6. Install access cover (2) and four nuts (1). 9. Install outlet hose (3) and the hose clamp. 7. Install the access plate on the engine hood and secure the access plate with the four bolts.

10. Close the engine hood.

130 Maintenance Section Engine Governor Oil Supply Screen - Clean/Inspect/Replace

i01902546

Engine Governor Oil Supply Screen - Clean /Inspect/Replace

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8. Start the engine and check the engine governor for  leaks. Stop the engine and make any necessary repairs. 9. Close the engine hood.

SMCS Code: 1264-510-Z3; 1264-571-Z3; 1278-510-Z3; 1278-571-Z3

i01902569

NOTICE Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, “Caterpillar  Tools and Shop Products Guide” for tools and supplies suitable to collect and contain fluids on Caterpillar  products.

Engine Oil Level - Check SMCS Code: 1000-535-FLV NOTICE Do not under fill or overfill engine crankcase with oil. Either condition can cause engine damage. 1. Stop the engine. Open the engine access door on the right side of the machine.

Dispose of all fluids according to local regulations and mandates. 1. Open the engine hood. The engine governor is on the right side of the machine.

Illustration 206 Illustration 205

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2. Disconnect oil supply tube (1). 3. Remove fitting (2) and seal (3) from governor  housing (4). 4. Use a 6 mm hexagon wrench to remove the screen from governor housing (4). 5. Wash the screen in a clean, nonflammable solvent. Inspect the screen and the seal for  damage. Replace the screen and/or the seal, if  necessary. 6. Install the screen far enough into the governor  housing in order to allow clearance for the seal and for the fitting.

2. Remove dipstick (2) and wipe off the dipstick with a clean cloth. Then, reinsert the dipstick and remove the dipstick again. This will give a more accurate measurement of the oil level. 3. Maintain the engine oil within the crosshatched region on dipstick (2). If necessary, remove filler  cap (1) and add oil. 4. Close the engine access door.

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131 Maintenance Section Engine Oil Sample - Obtain

i01902584

Engine Oil Sample - Obtain SMCS Code: 1348-008; 7542 NOTICE Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, “Caterpillar  Tools and Shop Products Guide” for tools and supplies suitable to collect and contain fluids on Caterpillar  products. Dispose of all fluids according to local regulations and mandates. 1. Operate the machine for a few minutes before obtaining the oil sample. This will thoroughly mix the engine oil for a more accurate sample.

Reference: For  more information, refer to Special Publication, SEBU6250, “Caterpillar Machine Fluids Recommendations”, “S·O·S Oil Analysis” and Special Publication, PEHP6001, “How To Take A Good Oil Sample”. i02625081

Engine Oil and Filter - Change SMCS Code: 1318-510 NOTICE Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the f luid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, “Caterpillar  Dealer Service Tool Catalog” for tools and supplies suitable to collect and contain fluids on Caterpillar  products. Dispose of all fluids according to local regulations and mandates.

2. Open the engine hood.

Selection of the Oil Change Interval NOTICE  A 500 hour engine oil change interval is available, provided that the operating conditions and recommended multigrade oil types are met. When these requirements are not met, shorten the oil change interval to 250 hours, or use an S·O·S oil sampling and analysis program to determine an acceptable oil change interval. If you select an interval for oil and filter change that is too long, you may damage the engine. Caterpillar oil filters are recommended. Recommended multigrade oil types are listed in Table 14 and in Table 15. Do not use single grade oils. Illustration 207

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The in-line sampling valve is located on the right side of the engine compartment.

3. Use the in-line sampling valve in order to obtain a sample of engine oil. 4. Close the engine hood.

132 Maintenance Section Engine Oil and Filter - Change

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Table 14

950G Wheel Loader  Engine Oil Change Interval (1) Operating Conditions Severe Normal(2) Multigrade Oil Type

Illustration 208

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 Abnormally harsh operating cycles or harsh environments can shorten the service life of  the engine oil. Arctic temperatures, corrosive environments, or extremely dusty conditions may require a reduction in engine oil change intervals from the recommendations in Table 14 and Table 15.  Also refer to Special Publication, SEBU5898, “Cold Weather Recommendations”. Poor maintenance of  air filters or of fuel filters requires reduced oil change intervals. See your Caterpillar dealer for more information if this product will experience abnormally harsh operating cycles or harsh environments.

High Load Factor (3) above 23 L (6 US gal) per hr  of fuel

Fuel Sulfur  from 0.3% to 0.5%

Altitude above 1830 m (6000 ft)

(4)

Cat DEO Preferred

500 hr

500 hr

500 hr

250 hr(6  )

ECF-1 11.0 minimum TBN(4) Preferred

500 hr

500 hr

500 hr

250 hr(6  )

ECF-1 TBN(4) below 11.0

500 hr

500 hr

250 hr(5)  

250 hr (6)

 API CG-4

500 hr

250 hr (5)

250 hr (5)

250 hr (6)

(1)

(2)

(3)

(4)

(5) (6)

The traditional oil change interval for engines is 250 hours. The standard oil change interval in this machine is 500 hours, if the operating conditions and recommended oil types that are listed in this table are met. Improvements in the engine allow this engine oil change interval. This new standard interval is not permitted for other machines. Refer to the applicable Operation and Maintenance Manuals for the other machines. Normal conditions include these factors: Fuel sulfur below 0.3%, altitude below 1830 m (6000 ft), and good air filter and fuel filter maintenance. Normal conditions do not include high load factor, harsh operating cycles, or harsh environments. High load factors can shorten the service life of your engine oil. Continuous heavy load cycles and very little idle time result in increased fuel consumption and oil contamination. These factors deplete the oil additives more rapidly. If the average fuel consumption of your 950G Wheel Loader exceeds 23 L (6 US gal) per hour, follow the “High Load Factor” recommendations in Table 14. To determine average fuel consumption, measure average fuel consumption for a period of 50 to 100 hours. If the application of the machine is changed, the average fuel consumption may change. For sulfur content above 0.5%, refer to Special Publication, SEBU6250, “Total Base Number (TBN) and Fuel Sulfur Levels for Direct Injection (DI) Diesel Engines” . In order to verify an oil change interval of 500 hours, refer to “Program A” below. Use “Program B” below to determine an appropriate interval.

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133 Maintenance Section Engine Oil and Filter - Change

Table 15

962G Wheel Loader  IT62G Integrated Toolcarrier  Engine Oil Change Interval (1) Operating Conditions Severe Normal(2) Multigrade Oil Type

High Load Factor (3) above 25 L (6.5 US gal) per  hr of  fuel

Fuel Sulfur  from 0.3% to 0.5%

500 hr

500 hr

Altitude above 1830 m (6000 ft)

(4)

• Proceed to Pr ogram B.

500 hr

ECF-1 11.0 minimum TBN(4) Preferred

500 hr

ECF-1 TBN(4) below 11.0

500 hr

500 hr

250 hr(5)  

250 hr (6)

 API CG-4

500 hr

250 hr(5  )

250 hr (5)

250 hr (6)

(2)

(3)

(4)

(5) (6)

If a sample does not pass the oil analysis, take one of these actions:

• Shorten the oil change interval to 250 hours.

Cat DEO Preferred

(1)

This program consists of three oil change intervals of  500 hours. Oil sampling and analysis is done at 250 hours and 500 hours for each of the three intervals for a total of six oil samples. The analysis includes oil viscosity and infrared (IR) analysis of the oil. If  all of the results are satisfactory, the 500 hour oil change inter val is acceptable for the machine in that application. Repeat Program A if you change the application of the machine.

250 hr(6  )

• Change to a preferred oil type in Table 14 or Table 15.

500 hr

500 hr

250 hr(6  )

Program B Optimizing Oil Change Intervals

The traditional oil change interval for engines is 250 hours. The standard oil change interval in this machine is 500 hours, if the operating conditions and recommended oil types that are listed in this table are met. Improvements in the engine allow this engine oil change interval. This new standard interval is not permitted for other machines. Refer to the applicable Operation and Maintenance Manuals for the other machines. Normal conditions include these factors: Fuel sulfur below 0.3%, altitude below 1830 m (6000 ft), and good air filter and fuel filter maintenance. Normal conditions do not include high load factor, harsh operating cycles, or harsh environments. High load factors can shorten the service life of your engine oil. Continuous heavy load cycles and very little idle time result in increased fuel consumption and oil contamination. These factors deplete the oil additives more rapidly. If the average fuel consumption of your 962G Wheel Loader exceeds 25 L (6.5 US gal) per hour, follow the “High Load Factor” recommendations in Table 15. To determine average fuel consumption, measure average fuel consumption for a period of 50 to 100 hours. If the application of the machine is changed, the average fuel consumption may change. For sulfur content above 0.5%, refer to Special Publication, SEBU6250, “Total Base Number (TBN) and Fuel Sulfur Levels for Direct Injection (DI) Diesel Engines”. In order to verify an oil change interval of 500 hours, refer to “Program A” below. Use “Program B” below to determine an appropriate interval.

Adjustment of the Oil Change Interval Note: Your Caterpillar dealer has additional information on these programs. Program A Verification for an Oil Change Interval of 500 Hours

Begin with a 250 hour oil change interval. The oil change intervals are adjusted by increments. Each interval is adjusted an additional 50 hours. Periodic oil sampling and analysis is done during each interval. The analysis includes oil viscosity and infrared (IR) analysis of the oil. Repeat Program B if you change the application of the machine. If an oil sample does not pass the analysis, shorten the oil change interval, or change to a preferred multigrade oil type in the listing above. References Reference: Form, PEDP7035, “Optimizing Oil Change Intervals” Reference: Form, PEDP7036, “S·O·S Fluid Analysis” Reference: Form, PEHP7076, “Understanding S·O·S Services Test” 1. Open the engine hood. 2. The crankcase drain valve is located on the right side of the oil pan beneath the machine. Open the crankcase drain valve and allow the oil to drain into a suitable container. Close the drain valve.

134 Maintenance Section Engine Valve Lash - Check

Illustration 209

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g00990394

3. Use a strap type wrench to remove filter element (1) from the left side of the machine. Inspect the oil filter. Reference: Refer to Operation and Maintenance Manual, “Oil Filter - Inspect”. 4. Clean the filter housing base. Make sure that all of  the used filter gasket is completely removed.

Illustration 211

g00996379

7. Some machines are equipped with an additional bypass oil filter (2) on the right side of the machine near the fuel filter. Use Steps 3 through 6 to replace the bypass oil filter. 8. Remove filler cap (3). Fill the crankcase with new oil. Reference: Refer to Operation and Maintenance Manual, “Lubricant Viscosities and Refill Capacities” for the correct type of oil and for the correct amount of oil. 9. Clean the filler cap and install the filler cap. 10. Start the engine and allow the oil to warm. Check for leaks. 11. Check the oil level on dipstick (4). Reference: Refer to Operation and Maintenance Manual, “Engine Oil Level - Check” for the correct procedure.

Illustration 210

g00101318

12. Close the engine hood and stop the engine.

5. Apply a thin coat of clean engine oil to the sealing surface of the new filter element. 6. Install the new filter element by hand. After the gasket contacts the filter base, tighten the filter by an additional 3/4 turn.

i01181536

Engine Valve Lash - Check SMCS Code: 1105-535 For the correct procedure, refer to the appropriate Service Manual module for your machine’s engine or  consult your Caterpillar dealer. Note: A qualified mechanic should adjust the engine valve lash because special tools and training are required.

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135 Maintenance Section Ether Starting Aid Cylinder - Replace

i01911242

Ether Starting Aid Cylinder Replace (If Equipped) SMCS Code: 1456-510-CD 1. Open the engine hood. The ether cylinder is located on the left side of the engine.

i01902620

Fuel System - Prime SMCS Code: 1250-548 NOTICE Care must be taken to ensure that fluids are contained during perfor mance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compar tment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, “Caterpillar  Tools and Shop Products Guide” for tools and supplies suitable to collect and contain fluids on Caterpillar  products. Dispose of all fluids according to local regulations and mandates.

Illustration 212

g00995605

2. Loosen the cylinder retaining clamp (1). Unscrew and remove the empty ether cylinder (2).

Note: The volume of the air in the water separator  is small. Usually, it is not necessary to prime the fuel system if only the water separator element was changed. 1. Stop the engine and open the engine hood. The fuel priming pump is located above the primary fuel filter on the right side of the machine.

3. Remove the used gasket. Install the new gasket that is provided with each new cylinder. 4. Install the new cylinder. Tighten the cylinder hand tight. Tighten the ether cylinder clamp securely. 5. Close the engine hood. i00643879

Fuel Injection Timing - Check SMCS Code: 1290-531-FT Refer to the Service Manual for the complete adjustment procedure for the Fuel injector timing. Note: The correct fuel timing specification is found on the Engine Information Plate. Fuel timing specifications may vary for different engine applications and/or for different power ratings. Illustration 213

 A qualified mechanic should adjust the fuel injector  timing because special tools and training are required.

Manual Priming Pump

g00990031

136 Maintenance Section Fuel System Primary Filter (Water Separator) - Drain

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7. Start the engine. Note: Additional priming may be needed if you are priming because of the following circumstances:

• The engine will not start. • The engine starts but the engine continues to misfire.

• The engine starts but the engine continues to emit smoke.

• The engine has run out of fuel. • The fuel injectors have been removed from the engine.

Illustration 214

g00700133

This additional priming will take approximately 100 strokes with a manual fuel priming pump. Operate an electric fuel pump for approximately 30 seconds for this additional priming.

Electric Priming Pump

Note: Some machines may not be equipped with vent valve (1). In this case, proceed to Step 4. 2. Open vent valve (1) at the fuel transfer pump and operate priming pump (2) until the fuel that flows from the hose has no air bubbles. This will fill water separator element (3) with fuel. Catch the fuel in a suitable container. Note: Approximately 100 strokes will be needed with a manual fuel priming pump in order to prime the fuel system to this point. Operate an electric fuel pump for approximately 30 seconds in order to prime the fuel system to this point. 3. Close vent valve (1). 4. Open drain valve (4) that is located toward the right side of the fuel filter base. Do not open the drain valve that is located toward the left side of the fuel filter base. 5. Operate priming pump (2) until fuel that flows from the hose has no air bubbles. This will fill the secondary fuel filters with fuel. Catch the fuel in a suitable container. Note: Approximately 300 strokes will be needed with a manual priming pump in order to prime the fuel system to this point. Operate an electric fuel pump for approximately 60 seconds in order to prime the fuel system to this point. 6. Close drain valve (4) on the fuel filter base.

i01902645

Fuel System Primary Filter  (Water Separator) - Drain SMCS Code: 1263-543 NOTICE Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, “Caterpillar  Tools and Shop Products Guide” for tools and supplies suitable to collect and contain fluids on Caterpillar  products. Dispose of all fluids according to local regulations and mandates. 1. Open the engine hood. The water separator is located on the bottom of the primary fuel filter on the right side of the machine.

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137 Maintenance Section Fuel System Primary Filter (Water Separator) Element - Replace

NOTICE Do not fill fuel filters with fuel before installing them. The fuel will not be filtered and could be contaminated. Contaminated fuel will cause accelerated wear to fuel system parts. The fuel system should be primed prior  to starting the engine. 1. Open the engine hood. The primary fuel filter is located on the right side of the machine.

Illustration 215

g00990072

2. Open drain valve (1) on the bottom of the water  separator bowl. Allow the water and the fuel to drain into a suitable container. 3. Close drain valve (1). Note: The water separator is under suction during normal engine operation. Tighten the drain valve securely in order to prevent air leakage into the fuel system. 4. Close the engine hood. i01902690

Fuel System Primary Filter  (Water Separator) Element Replace SMCS Code: 1260-510; 1263-510-FQ NOTICE Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, “Caterpillar  Tools and Shop Products Guide” for tools and supplies suitable to collect and contain fluids on Caterpillar  products. Dispose of all fluids according to local regulations and

Illustration 216

g00284523

2. Open drain valve (1) on the bottom of water  separator bowl (3). Allow the water and the fuel to drain into a suitable container. 3. Support the water separator element and rotate the retaining ring (2) counterclockwise. Remove the retaining ring (2). 4. Remove the water separator element from the mounting base. 5. Remove water separator bowl (3) from the filter  element. Clean the water separator bowl and the O-ring groove. Note: The water separator bowl is reusable. Do not discard the water separator bowl. 6. Inspect the O-ring seal on the water separator  bowl. Replace the O-ring seal, if necessary. 7. Lubricate the O-ring seal with clean diesel fuel or  with engine oil. Place the O-ring seal in the water  separator bowl. 8. Install water separator bowl (3) onto the new filter  element by hand until the filter element is snug. Do not use tools to tighten the filter element.

138 Maintenance Section Fuel System Secondary Filter Number One - Replace

9. Install the new filter element. Rotate retaining ring (2) clockwise in order to fasten the filter to the mounting base. Continue to turn the retaining ring until an audible audible click is heard. If a click is not heard, the retaining ring has not been rotated far  enough and the filter element is not in the locked position. 10. Close drain valve (1). Note: The water separator element is under suction during normal engine operation. Tighten the drain valve securely securely in order to prevent air leakage into the fuel system. 11. Prime the fuel fuel system in order to fill the water  separator separator element element with fuel. Reference: Refer to Operation and Maintenance Manual, “Fuel System - Prime” for the correct procedure. 12. Close the engine hood. i01902696

Fuel System Secondary Filter  Number One - Replace SMCS Code: 1261-510-SE

SEBU7018-08

NOTICE ensure that that fluids fluids are contain contained ed Care Care must must be tak taken to ensure during performance of inspection, inspection, maintenance, maintenance, testing, ing, adjus adjusti ting ng and and repa repair ir of the produ product ct.. Be prepa prepared red to collect the fluid fl uid with suitable containers before opening any compartment or disassembling any component containing containing fluids. Refer to Special Special Publication, Publication, NENG2500, “Caterpillar  Tools ools and and Shop Shop Produc Products ts Guide Guide”” for for tools tools and and supp supplie lies s ollect and contain contain fluids on Caterpil Caterpillar  lar  suitabl suitable e to collect products. Dispose of all all fluids according to local regulations and mandates. NOTICE Do not fill the fuel filters with fuel before installing the fuel filters. The fuel will not be filtered and could be contaminated. Contaminated fuel will cause accelerated wear to fuel system parts. Open the engine hood. The secondary fuel filter is located on the right side of the machine. Note: This machine is equipped with two secondary spin-on filters on a single filter base. The upper filter  is upside-down. Always drain the inverted filter before you remove either filter.

Personal Personal injury or death may result from failure to adhere to the following procedures. Fuel leaked or spilled onto hot surfaces surfaces or electrical components can cause a fire. Clean up all leaked or spilled fuel. Do not smoke while working on the fuel system. Turn the disconnect switch OFF or disconnect the battery when changing fuel filters.

Illustration 217

g00990097

1. To drain upper filter (2) (inverted filter), place a suitable container under the drain valves and open drain valve (3). Then, immediately open drain valve (4) and allow the fuel to drain into the suitable container.

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139 Maintenance Section Fuel System Secondary Filter Number Two - Replace

When the fuel stops st ops draining, keep the drain valves open and loosen upper filter (2) by a 1/4 turn. As the filter is loosened, additional fuel may drain from the drain valves. Keep turning the filter  by 1/4 turns until fuel does not drain from the drain valves. Then, close the drain valves and properly dispose of the the fuel. Note: Make sure that the drain valves are opened in der. If you open the wrong drain valve the proper or der. first, an air lock in the fuel system may occur. occur. This will not allow fuel to drain from the upper filter. 2. Hand tighten the upper filter until the seal contacts the filter base. Then, tighten upper filter (2) by an additional 3/4 turn. Rotation index marks are positioned on the filter  at 90 degree intervals. Use these rotation index marks as a guide when you tighten the filter. 3. Remove lower lower filter (1). Note: Lower filter (1) has not been drained. The filter  uel. When you remove the lower filter, use contains contains f uel. caution in order to avoid spilling the fuel.

s ystem. 8. Prime the fuel system. Reference: Refer to Operation and Maintenance Manual, “Fuel System - Prime” for the correct procedure. 9. Close the engine engi ne hood. i01902711

Fuel System Secondary Filter  Number Two - Replace SMCS Code: 1261-510-SE

Personal Personal injury or death may result from failure to adhere to the following procedures. Fuel leaked or spilled onto hot surfaces or electrielectrical components can cause a fire. Clean up all leaked or spilled fuel. Do not smoke while working on the fuel system.

4. Inspect Inspect the the fuel filter element for debris by cutting the filter open. Discard the used fuel filter element properly.

Turn the disconnect switch OFF or disconnect the battery when changing fuel filters.

5. Clean the filter mounting base. Make sure that all of the used seal is removed from the filter  mounting base. base.

NOTICE Care Care must must be taken taken to ensu ensure re that that fluid fluids s are cont contain ained ed during performance of inspection, inspection, maintenance, maintenance, testingand repair repair of theproduc theproduct. t. Be prepa prepared red to ing, ing, adjust adjustingand collect the fluid with suitable containers before opening any compartment or disassembling any component containing containing fluids. Refer to Special Special Publication, Publication, NENG2500, “Caterpillar  Products ts Guide Guide”” for for tools tools and and supp supplie lies s Tools ools and and Shop Produc suitab suitable le to collect collect and contain contain fluids fluids on Caterpil Caterpillar  lar  products. Dispose of all fluids according to local regulations and mandates.

Illustration 218

g00101318

6. Apply a thin coat of clean diesel fuel to the sealing surface of the new fuel filter element. 7. Install the new fuel filter element by hand. When the seal contacts the filter base, tighten the fuel filter element by an additional 3/4 turn. This will tighten the fuel filter element sufficiently. Rotation index marks are positioned on the filter  at 90 degree intervals. Use these rotation index

NOTICE Do not fill the fuel filters with fuel before installing the fuel filters. The fuel will not be filtered and could be contaminated. Contaminated fuel will cause accelerated wear to fuel system parts. Open the engine hood. The secondary fuel filter is located on the right side of the machine. Note: This machine is equipped with two secondary spin-on filters on a single filter base. The upper filter  is upside-down. Always drain the inverted filter before

140 Maintenance Section Fuel Tank Cap and Strainer - Clean

SEBU7018-08

Illustration 220

g00101318

5. Apply a thin coat of clean diesel fuel to the sealing surface of the new fuel filter element.

Illustration 219

g00990097

1. To drain upper filter (2) (inverted filter), place a suitable container under the drain valves and open drain valve (3). Then, immediately open drain valve (4) and allow the fuel to drain into the suitable container. When the fuel stops draining, keep the drain valves open and loosen the inverted filter by a 1/4 turn. As the filter is loosened, additional fuel may drain from the drain valves. Keep turning the filter  by 1/4 turns until fuel does not drain from the drain valves. Then, close the drain valves and properly dispose of the fuel. Note: Make sure that the drain valves are opened in the proper order. If you open the wrong drain valve first, an air lock in the fuel system may occur. occur. This will not allow fuel to drain from the upper filter.

6. Install the new fuel filter element by hand. When the seal contacts the filter base, tighten the fuel filter element by an additional 3/4 turn. This will tighten the fuel filter element sufficiently sufficiently.. Rotation index marks are positioned on the filter  at 90 degree intervals. Use these rotation index marks as a guide when you tighten the filter. 7. Prime the fuel system. Reference: Refer to Operation and Maintenance Manual, “Fuel System - Prime” for the correct procedure. 8. Close the engine hood. i01464102

Fuel Tank Cap and Strainer Clean

2. Remove upper filter (2).

SMCS Code: 1273-070-Z2; 1273-070-STR

3. Inspect the fuel filter element for debris by cutting the filter open. Dispose of the used fuel filter  element properly.

The fuel tank tank cap is located on the left side of the machine.

4. Clean the filter mounting base. Make sure that all of the used seal is removed from the filter  mounting base.

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141 Maintenance Section Fuel Tank Water and Sediment - Drain

2. Close the drain valve. Note: If water and sediment are regularly found at weekly maintenance intervals, drain the sediment daily. i01902769

Fuses - Replace SMCS Code: 1417-510 NOTICE Replace the fuses with the same type and size only. Otherwise, electrical damage can result. If it is necessary to replace fuses frequently, an electrical problem exists. Contact your Caterpillar dealer.

Illustration 221

g00765153

1. Remove fuel tank cap (1) and strainer (3) from fuel tank (4). Remove seal (2) from the cap.

Fuses – The fuses protect the electrical system from a circuit that has been overloaded. Change a fuse if the element separates. If the element of a new fuse separates, check and repair the circuit.

2. Wash the strainer and the fuel tank cap in a clean, nonflammable solvent. 3. Install the strainer into the filler opening. 4. Inspect the seal for damage. Replace the seal, if  necessary. Install the fuel tank cap. i01464158

Fuel Tank Water and Sediment - Drain SMCS Code: 1273-543-M&S

Illustration 223

g00990294

The fuse panel is located at the rear of the operator  compartment. Transmission Control (1) – 10 amp

Secondary Steering (2) (if equipped) – 10 amp

Turn Signals and Rotating Beacon (3) – 10 amp Illustration 222

g00765256

The drain valve is located under the fuel tank. 1. Open the drain valve and allow the water and

Quick Coupler(4) (if equipped) – 10 amp

142 Maintenance Section Hood Tilt Actuator - Lubricate

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Window Wipers (5) – 10 amp

Backup Alarm (15) – 10 amp

Payload Control System (6) – 10 amp

Brake Lights (16) – 10 amp

Electric Converter (7) – 10 amp

Engine Start Switch (17) – 10 amp

Digital Electrical Monitoring System (8) – 10 amp

Horn (18) – 10 amp

Rear Floodlights (9) – 15 amp i01316855

Hood Tilt Actuator - Lubricate Front Floodlights (10) – 15 amp

SMCS Code: 7275-086

Lighter (11) – 10 amp

Axle Oil Cooler (12) (if equipped) – 10 amp

Hydraulic System (13) – 10 amp

Illustration 225

g00279633

Implements (14) – 10 amp 1. Raise the engine hood. The hood tilt actuator is located on the right side of the machine. 2. Fully extend the cylinder and wipe off the inner  post with a clean cloth. Then, lubricate the entire length of the inner post. 3. Wipe off both fittings on the cylinder. Then, apply lubricant through the two fittings until the lubricant escapes back through each fitting. 4. Close the engine hood.

Illustration 224

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 Additional fuses are located in the engine compartment on the right side of the machine.

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143 Maintenance Section Hydraulic System Biodegradable Oil Filter Element - Replace

i01908975

Hydraulic System Biodegradable Oil Filter  Element - Replace (If Equipped)

4. Remove the used filter element. Dispose of the used filter element properly. 5. Clean the filter housing and the filter housing base with a clean, nonflammable solvent. 6. Inspect the seal on the filter housing. Replace the seal if the seal is damaged.

SMCS Code: 5068-510

7. Insert a new filter element into the filter housing.

S/N: BDP1-Up 8. Install filter housing drain plug (1). Install filter  housing (2) onto the filter housing base. Tighten the filter housing by hand.

S/N: 2JS1-Up S/N: 3BS1-Up S/N: 5FW1-Up

9. Close the engine hood.

S/N: 7BW1-Up

10. Start the engine and run the engine for a few minutes. Check the hydraulic oil level.

1. Open the engine hood. The oil filter is located on the right side of the machine.

Reference: Refer to Operation and Maintenance Manual, “Hydraulic System Oil Level - Check” for  the correct procedure. i01911223

Hydraulic System Biodegradable Oil Filter  Restriction - Check (If Equipped) SMCS Code: 5068-535-RS; 7450-535-HR S/N: BDP1-Up Illustration 226

g00994854

NOTICE Care must be taken to ensure that fluids are contained during perf ormance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, “Caterpillar  Tools and Shop Products Guide” for tools and supplies suitable to collect and contain fluids on Caterpillar  products. Dispose of all fluids according to local regulations and mandates. 2. Remove filter housing drain plug (1). Allow the oil to drain into a suitable container. 3. Use a strap type wrench to remove filter housing (2).

S/N: 2JS1-Up S/N: 3BS1-Up S/N: 5FW1-Up S/N: 7BW1-Up 1. Operate the machine in order to warm the hydraulic oil to operating temperature. 2. Lower the attachment to the ground. Engage the parking br ake. 3. Open the engine hood. The oil filter is located on the right side of the machine.

144 Maintenance Section Hydraulic System Oil - Change

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Oil Filters Caterpillar oil filters are recommended. The interval for changing the oil filter should be 500 hours.

Oil The 4000 hour interval for changing the oil is for the following oil types.

• Caterpillar Hydraulic Oil (HYDO) • Caterpillar Transmission and Drive Train Oil (TDTO)

Illustration 227

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• Caterpillar TDTO (TMS)

4. Press the button on the top of hydraulic tank breaker relief valve (2) in order to relieve any tank pressure.

• Caterpillar Diesel Engine Oil

5. Install a pressure gauge on pressure tap (1) that is on the top of the filter housing.

• Caterpillar  Multipurpose Tractor Oil (MTO)

6. Operate the engine at high idle. Read the value on the pressure gauge.

• Caterpillar Biodegradable Hydraulic Oils (HEES)

• Heavy-duty diesel engine oils with a minimum zinc content of 900 ppm (CF, CF-4, CG-4, and CH-4)

If the pressure is between 1.0 ± 0.2 bars and 2.5 ± 0.2 bars, the biodegradable hydraulic oil filter  is clean.

Note: Industrial hydraulic oils are not recommended in Caterpillar hydraulic systems. These oils are more likely to cause corrosion and excessive wear.

If the pressure is 2.5 ± 0.2 bars or more, the biodegradable hydraulic oil filter is plugged.

Monitoring the Condition of the Oil

7. If the biodegradable hydraulic oil filter is plugged, replace the biodegradable hydraulic oil filter  element. Reference: Refer to Operation and Maintenance Manual, “Hydraulic System Biodegradable Oil Filter Element - Replace” for the correct procedure. i01773322

Hydraulic System Oil - Change SMCS Code: 5056-044

Selection of the Oil Change Interval Your machine may be able to use a 4000 hour  interval for the hydraulic oil. The hydraulic oil is in the system that is not integral to the service brakes, the clutches, the final drives, or the differentials. The standard change interval is 2000 hours. The oil should be monitored during intervals of 500 hours. The extended 4000 hour interval can be used if the following criteria are met.

The oil should be monitored during intervals of 500 hours. Cater pillar’s standard SOS Fluids Analysis or  an equivalent oil sampling program should be used. The current guidelines for cleanliness of the oil should be observed. Refer to “Measured Data”. If an oil sampling program is not available, the standard 2000 oil change interval should be used.

Measured Data The following information should be monitored through sampling of the oil:

• Significant changes in wear metals should be monitored. These metals include iron, copper, chromium, lead, aluminum, and tin.

• Significant changes in the following additives

should be monitored: zinc, calcium, magnesium, and phosphorus.

• Contaminants should not be present. These

contaminants include fuel and antifreeze. Water  content should be .5 percent or less.

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145 Maintenance Section Hydraulic System Oil - Change

• The silicon level should not exceed 15 parts per  million for new oil. The particle counts should be monitored.

• The recommended level of cleanliness for 

Caterpillar machines that are operated in the field is ISO 18/15 or cleaner. The cleanliness should be monitored by particle count analysis. The levels of contamination should not exceed the normal by mor e than two ISO codes. Action should be taken in order to determine the cause of the contamination. The system should be returned to the original levels of contamination.

• There should not be significant changes in sodium, silicon, copper, and potassium.

• The allowable level of oxidation is 40 percent (0.12  Abs units).

• The kinematic viscosity of 100 °C (212 °F) should not exceed a 2 cSt change from new.

Illustration 228

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Procedure for Changing the Hydraulic Oil

3. The hydraulic tank is located on the right side of  the machine. Press the button on the breaker relief  valve (1) in order to relieve any tank pressure.

NOTICE Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.

4. Remove the hydraulic tank filler cap (2) and the filler strainer (3). Wash the filler cap and the strainer in a clean, nonflammable solvent. Install the strainer.

Refer to Special Publication, NENG2500, “Caterpillar  Tools and Shop Products Guide” for tools and supplies suitable to collect and contain fluids on Caterpillar  products.

6. Remove the drain plug (5) from the bottom of the hydraulic tank. Wash the drain plug in a clean, nonflammable solvent.

Dispose of all fluids according to local regulations and mandates. 1. Operate the machine in order to warm the hydraulic oil. 2. Park the machine on level ground. Lower the attachment to the ground and apply slight downward pressure. Engage the parking brake and stop the engine.

5. Inspect the gasket on the hydraulic tank filler cap for damage. Replace the gasket, if necessary.

7. The hydraulic tank is equipped with an ecology drain valve. Attach a hose to a 126-7914 Oil Drain Coupling. Install the threaded end of the coupling into the drain valve in order to unseat the internal drain valve. NOTICE Never start the engine while the hydraulic oil tank is being drained or while the hydraulic oil tank is empty. Excessive wear and damage to the hydraulic components can occur. 8. Close the drain valve. Install the drain plug. 9. Change the hydraulic oil filter. Reference: Refer to Operation and Maintenance Manual, “Hydraulic System Oil Filter - Replace” for  the correct procedure.

146 Maintenance Section Hydraulic System Oil Filter - Replace

10. Fill the hydraulic tank with clean oil. Make sure that the oil level is at the “FULL” mark on the sight gauge (4). Install the filler cap. Reference: Refer to Operation and Maintenance Manual, “Lubricant Viscosities and Refill Capacities” for the correct type of oil and for the correct amount of oil. 11. Start the engine and run the engine for at least ten seconds. Then, stop the engine and add hydraulic oil to the tank until the oil level is at the “FULL” mark on the sight gauge. Install the filler cap. 12. Start the engine and run the engine at low idle. Cycle the implements so that all hydraulic systems are filled with oil. Note: If the alert indicator for a low oil level comes on, stop the engine and immediately add oil to the hydraulic tank. The oil level should not be below the suction ports in the hydraulic tank while the engine is running.

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i01465406

Hydraulic System Oil Filter Replace SMCS Code: 5068-510 NOTICE Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, “Caterpillar  Tools and Shop Products Guide” for tools and supplies suitable to collect and contain fluids on Caterpillar  products. Dispose of all fluids according to local regulations and mandates.

13. Add hydraulic oil to the tank until the oil level is at the “FULL” mark on the sight gauge. 14. Stop the engine. Top off the hydraulic tank so that the oil level is at the “FULL” mark on the sight gauge. Install the filler cap. Note: The oil must be free of air bubbles. If air  bubbles are present in the hydraulic oil, air is entering the hydraulic system. Inspect the hydraulic suction line and the hose clamps. 15. If necessary, tighten any loose clamps or any loose connections. Replace any damaged hoses.

Illustration 229

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The hydraulic filter is located on the right side of the machine. 1. Use a strap type wrench to remove the filter  element. Dispose of the used filter element properly. 2. Clean the filter mounting base. Make sure that all of the used gasket is completely removed.

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147 Maintenance Section Hydraulic System Oil Level - Check

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Hydraulic System Oil Level Check SMCS Code: 5056-535-FLV

Illustration 230

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3. Lubricate the gasket of the new filter element with clean hydraulic oil. 4. Install the new filter element by hand. After the gasket contacts the filter mounting base, tighten the filter element by an additional 3/4 turn. 5. Start the engine and run the engine at low idle. Inspect the hydraulic system for leaks.

Illustration 232

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The hydraulic tank is located on the right side of the machine. Maintain the oil level above the “ADD COLD” mark on sight gauge (2). If necessary, remove filler cap (1) slowly and add oil. i01903274

Hydraulic System Oil Sample - Obtain SMCS Code: 5050-008; 5056-008; 7542

Illustration 231

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6. Maintain the oil level above the “ADD COLD” mark on the sight gauge. Add hydraulic oil, if necessary.

NOTICE Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, “Caterpillar  Tools and Shop Products Guide” for tools and supplies suitable to collect and contain fluids on Caterpillar  products. Dispose of all fluids according to local regulations and mandates.

148 Maintenance Section Hydraulic Tank Breaker Relief Valve - Clean

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1. Operate the machine for a few minutes before obtaining the oil sample. Operate the hydraulic controls. This will thoroughly mix the hydraulic oil for a more accurate sample.

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Hydraulic Tank Breaker Relief  Valve - Clean SMCS Code: 5118-070

Illustration 233

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2. Open the engine access door on the left side of  the machine. The sampling valve for the hydraulic oil is located on the hydraulic oil filter base beneath the cab on the left side of the machine.

Illustration 235

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The hydraulic tank breaker relief valve is located on the top of the hydraulic tank on the right side of the machine. 1. Press the button on the top of the hydraulic breaker in order to relieve the pressure in the hydraulic tank. Remove the hydraulic tank breaker  relief valve.

Illustration 234

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3. Use the in-line sampling valve in order to obtain a sample of hydraulic oil.

2. Clean the hydraulic tank breaker relief valve in a clean, nonflammable solvent. Shake the breaker  relief valve dry or use pressure air to dry the breaker relief valve. 3. Install the hydraulic tank breaker relief valve.

4. Close the engine access door. Reference: For more information, refer to Special Publication, SEBU6250, “Caterpillar Machine Fluids Recommendations”, “S·O·S Oil Analysis” and Special Publication, PEHP6001, “How To Take A Good Oil Sample”.

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Logging Fork Clamp Lubricate SMCS Code: 6113-086-BD; 6410-086-BD Wipe off all fittings before any lubricant is applied.

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149 Maintenance Section Oil Filter - Inspect

Nonferrous metals can indicate wear on the aluminum parts of the engine such as main bearings, rod bearings, or turbocharger bearings. Small amounts of debris may be found in the filter  element. This could be caused by friction and by normal wear. Consult your Caterpillar dealer in order  to arrange for further analysis if an excessive amount of debris is found.

Illustration 236

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Using an oil filter element that is not recommended by Caterpillar can result in severe engine damage to engine bearings, to the crankshaft, and to other  parts. This can result in larger particles in unfiltered oil. The particles could enter the lubricating system and the particles could cause damage.

 Apply lubricant through three fittings on each side of the logging fork.

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Radiator Core - Clean

There is a total of six fittings.

SMCS Code: 1353-070-KO i02106227

Oil Filter - Inspect SMCS Code: 1308-507; 3004-507; 3067-507; 5068-507

Inspect a Used Filter for Debris

Illustration 238

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1. Open the engine hood. The radiator assembly is located at the rear of the machine.

Illustration 237

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The element is shown with debris.

Use a filter cutter to cut the filter element open. Spread apart the pleats and inspect the element for  metal and for other debris. An excessive amount of  debris in the filter element can indicate a possible failure. If metals are found in the filter element, a magnet can be used to differentiate between ferrous metals and nonferr ous metals. Ferrous metals can indicate wear on steel parts and on cast iron parts.

Illustration 239

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2. Remove two bolts (1). Swing hydraulic oil cooler  (2) away from radiator (3).

150 Maintenance Section Radiator Core - Clean

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Low Sound Machines and Blue Angel Machines

Illustration 240

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3. Remove two bolts (4). Swing air conditioner  condenser (5) away from radiator (3).

Illustration 242

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1. Push the button and open the radiator grill that is located on the rear of the machine.

Illustration 241

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4. You can use compressed air, high pressure water, or steam to remove dust and other debris from the radiator fins. However, the use of compressed air is preferred. 5. Swing the hydraulic oil cooler back into the operating position and replace the two bolts.

Illustration 243

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2. Remove bolt (1). Swing hydraulic oil cooler (2) away from the radiator. 3. Remove two bolts (3). Swing air conditioner  condenser (4) away from the radiator.

6. Swing the air conditioner condenser back into the operating position and replace the two bolts. 7. Close the engine hood.

Illustration 244

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151 Maintenance Section Refrigerant Dryer - Replace

4. You can use compressed air, high pressure water, or steam to remove dust and other debris from the radiator fins. However, the use of compressed air is preferr ed. 5. Swing the hydraulic oil cooler back into the operating position and replace the bolt. 6. Swing the air conditioner condenser back into the operating position and replace the two bolts. 7. Close the radiator grill. i01914104

Refrigerant Dryer - Replace SMCS Code: 7322-510

Personal injury can result from contact with refrigerant. Contact with refrigerant can cause frost bite. Keep face and hands away to help prevent injury. Protective goggles must always be worn when refrigerant lines are opened, even if the gauges indicate the system is empty of refrigerant. Always use precaution when a fitting is removed. Slowly loosen the fitting. If the system is still under pressure, release it slowly in a well ventilated area.

Illustration 245

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 Access the refrigerant accumulator from the right side of the machine. Access the in-line refrigerant dryer from the left side of the machine. Refer to Service Manual, SENR5664, “In-Line Refrigerant Dryer - Remove and Install” for the replacement procedure of the in-line refrigerant dryer. Note: When you operate the machine in a climate with high humidity, replace the in-line refrigerant dryer  after every 1000 service hours or 6 months. i01157525

Personal injury or death can result from inhaling refrigerant through a lit cigarette. Inhaling air conditioner refrigerant gas through a lit cigarette or other smoking method or inhaling fumes released from a flame contacting air conditioner refrigerant gas, can cause bodily harm or  death. Do not smoke when servicing air conditioners or  wherever refrigerant gas may be present. Use a certified recovery and recycling cart to properly remove the refrigerant from the air conditioning system.

Ride Control Accumulator Check SMCS Code: 5077-535-R6 The ride control accumulator reduces the pitching of  the machine. If the machine seems to be bouncing excessively, check the charge in the ride control accumulator. Note: Special tools and equipment are required to test the accumulator. Reference: For more information, refer to Testing and Adjusting, SENR1390, “950G Wheel Loader, 962G Wheel Loader and IT62G Integrated Toolcarrier  Hydraulic System” or consult your Caterpillar dealer.

152 Maintenance Section Roading Fender Hinges - Lubricate

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Roading Fender Hinges Lubricate

Rollover Protective Structure (ROPS) - Inspect

SMCS Code: 7252-086-HNG

SMCS Code: 7323-040; 7325-040

S/N: BDP1-Up S/N: 2JS1-Up S/N: 3BS1-Up S/N: 5FW1-Up S/N: 7BW1-Up Wipe off the fitting before any lubricant is applied.

Illustration 247

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Inspect the ROPS for bolts that are loose or damaged. Use original equipment parts only to replace bolts that are damaged or missing. Tighten the four  cab mounting bolts to a torque of 850 ± 100 N·m (629 ± 74 lb ft). Note: Apply oil to all bolt threads before installation. Failure to apply oil can result in improper bolt torque. Illustration 246

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Swing open the roading fender. Apply lubricant through one fitting on the hinge. There is one hinge on each side of the machine.

Do not repair the ROPS by welding reinforcement plates to the ROPS. Consult your Caterpillar dealer  for repair of cracks in any welds, in any castings, or  in any metal section of the ROPS. i02429589

Seat Belt - Inspect SMCS Code: 7327-040  Always check the condition of the seat belt and the condition of the seat belt mounting hardware before you operate the machine. Replace any parts that are damaged or worn before you operate the machine.

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153 Maintenance Section Seat Belt - Replace

Illustration 249

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Typical example

(1) Date of installation (retractor) (2) Date of installation (buckle) (3) Date of manufacture (tag) (fully extended web) (4) Date of manufacture (underside) (buckle)

Check the seat belt mounting hardware (1) for wear  or for damage. Replace any mounting hardware that is worn or damaged. Make sure that the mounting bolts are tight.

Consult your Caterpillar dealer for the replacement of  the seat belt and the mounting hardware.

Illustration 248

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Check buckle (2) for wear or for damage. If the buckle is worn or damaged, replace the seat belt. Inspect the seat belt (3) for webbing that is worn or  frayed. Replace the seat belt if the seat belt is worn or frayed. Consult your Caterpillar dealer for the replacement of  the seat belt and the mounting hardware. Note: Within three years of the date of installation or  within five years of the date of manufacture, replace the seat belt. Replace the seat belt at the date which occurs first. A date label for determining the age of  the seat belt is attached to the seat belt, the seat belt buckle, and the seat belt retractor. If your machine is equipped with a seat belt extension, also perform this inspection procedure for  the seat belt extension.

If your machine is equipped with a seat belt extension, also perform this replacement procedure for the seat belt extension. i01898262

Service Brake Disc Wear  Indicator - Check SMCS Code: 4255-535-IND Reference: For information about checking the wear  indicator for the service brake disc, refer to Testing and Adjusting, SENR1387, “950G Wheel Loader, 962G Wheel Loader and IT62G Integrated Toolcarrier  Braking System”. i02405758

Steering Cylinder Bearings Lubricate

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Seat Belt - Replace

SMCS Code: 4303-086-BD

SMCS Code: 7327-510 Within three years of the date of installation or within five years of the date of manufacture, replace the seat belt . Replace the seat belt at the date which occurs first. A date label for determining the age of  the seat belt is attached to the seat belt, the seat belt buckle, and the seat belt retractor.

Crushing Hazard. Insure that the machine ignition switch is in the OFF position and that the parking brake is engaged before entering the articulation area. Failure to do so could result in serious injury or death.

154 Maintenance Section Steering Pilot Oil Screen (Command Control Steering) - Clean/Replace

SEBU7018-08

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Steering Pilot Oil Screen (Command Control Steering) Clean/Replace SMCS Code: 4304-070-Z3; 4304-510-Z3 S/N: 2JS1-Up S/N: 3BS1-Up S/N: 4BS1-Up S/N: 5AS1-Up S/N: 5RS1-Up S/N: 6NS1-Up

Illustration 250

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Wipe off the fittings before any lubricant is applied. Open the access door on the right side of the machine. Apply lubricant through two remote fittings. These remote fittings lubricate the head end of the steering cylinders.  Apply lubricant through the fittings on the rod ends of  both steering cylinders.

Personal injury can result from working with cleaning solvent. Because of the volatile nature of many cleaning solvents, extreme caution must be exercised when using them. If unsure about a particular  cleaning fluid, refer to the manufacturer’s instructions and directions. Always wear protective clothing and eye protection when working with cleaning solvents.

There is a total of four fittings.

Illustration 251

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The screen group for the steering oil is located in the articulation joint near the steering neutralizer valve on the right side.

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155 Maintenance Section Steering Shaft (Command Control Steering) - Lubricate

2. Remove two connectors (2) from screen group (3). 3. Use an allen wrench to remove one screen from each opening of the screen group. 4. Wash the screens in a clean, nonflammable solvent.

Reference: Ref er to Disassembly and Assembly, SENR1392, “950G Wheel Loader, 962G Wheel Loader and IT62G Integrated Toolcarrier Machine Systems” for the removal procedure and for the installation procedure. 2. Wipe off all of the fittings before any lubricant is applied.

5. Dry each screen with pressure air. Inspect each screen for damage. Replace any damaged screens.

3. Apply 5P-0960 Molybdenum Grease through fittings (1), (2), (3) and (4).

6. Install the screens and tighten the allen head screws until the screens are snug.

4. Apply 1P-0808 Multipurpose Grease through fittings (5), (6), (7) and (8).

7. Install two connectors (2) and two hoses (1).

5. Install the steering shaft on the machine.

i01326236

Steering Shaft (Command Control Steering) - Lubricate

i02305841

Tire Inflation - Check SMCS Code: 4203-535-AI

SMCS Code: 4343-086-JF S/N: 2JS1-Up S/N: 3BS1-Up S/N: 4BS1-Up S/N: 5AS1-Up S/N: 5RS1-Up S/N: 6NS1-Up

Illustration 253

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 Always obtain proper tire inflation pressures and maintenance recommendations for the tires on your  machine fr om your tire supplier. Measure the tire pressure on each tire. Inflate the tires with nitrogen , if necessary. Reference: Refer to the “Tire Inflation Information” section of the Operation and Maintenance Manual for more information.

Illustration 252

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1. Remove the steering shaft from the machine.

156 Maintenance Section Transmission Oil - Change

SEBU7018-08

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Transmission Oil - Change SMCS Code: 3030-044 NOTICE Care must be taken to ensure that fluids are contained during perfor mance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compar tment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, “Caterpillar  Tools and Shop Products Guide” for tools and supplies suitable to collect and contain fluids on Caterpillar  products. Dispose of all fluids according to local regulations and mandates. Illustration 255

1. Operate the engine for a few minutes in order to warm the transmission oil. 2. Park the machine on a hard, level surface. Lower  the bucket to the ground with a slight downward pressure. Engage the parking brake and stop the engine.

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3. Remove transmission oil drain plug (7). Allow the oil to drain into a suitable container. Clean the drain plug and install the drain plug. 4. Remove four cover bolts and magnetic strainer  cover (3). 5. Remove suction screen (4) and tube (6) from the housing. Remove three magnets (5) from the tube. 6. Wash the tube and the screen in a clean, nonflammable solvent. 7. Use a cloth, a stiff bristle brush or pressurized air  to clean the magnets. NOTICE Do not drop or rap the magnets against any hard surface. Replace any damaged magnets.

Illustration 254

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Note: Remove the bolts (1) that hold the transmission guard (2). Remove the transmission guard on the underside of the machine in order to access the magnetic strainer.

8. Clean the cover and inspect the cover seal. Replace the seal, if necessary. 9. Install three magnets (5) on the tube. Insert suction screen (4) and tube (6) in the housing. 10. Install the cover and the cover bolts. 11. Replace the transmission oil filter. Reference: Refer to Operation and Maintenance Manual, “Transmission Oil Filter - Replace” for the correct procedure.

SEBU7018-08

157 Maintenance Section Transmission Oil Filter - Replace

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Transmission Oil Filter Replace SMCS Code: 3067-510 NOTICE Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, “Caterpillar  Tools and Shop Products Guide” for tools and supplies suitable to collect and contain fluids on Caterpillar  products. Illustration 256

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12. The filler tube for the transmission is located near  the center hitch. Remove the filler cap (8) and fill the transmission with oil. Reference: Refer to Operation and Maintenance Manual, “Lubricant Viscosities and Refill Capacities” for the correct type of oil and for the correct amount of oil.

Dispose of all fluids according to local regulations and mandates. 1. Park the machine on a hard, level surface. Lower  the bucket to the ground with a slight downward pressure. Engage the parking brake and stop the engine.

13. Remove the transmission breather from the top of  the transfer case. Wash the breather in a clean, nonflammable solvent. Install the breather. 14. Start the engine. Slowly operate the transmission controls in order to circulate the oil. 15. Move the transmission control to the NEUTRAL position. Stop the engine. Inspect the transmission for leaks. 16. Check the transmission oil level. The sight gauge (9) is located near the filler tube. The transmission oil should be at the mark (10) if the engine is off. The oil should be between marks (11) and (12) when the engine is idling. Reference: Refer to Operation and Maintenance Manual, “Transmission Oil Level - Check” for the correct procedure.

Illustration 257

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2. The transmission oil filter is located on the left side of the machine near the articulation joint. Use a strap type wrench to remove the transmission oil filter. Dispose of the used oil filter properly. 3. Clean the filter mounting base. Remove all of the used filter gasket from the filter mounting base.

158 Maintenance Section Transmission Oil Level - Check

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Transmission Oil Level - Check SMCS Code: 3030-535-FLV

Illustration 258

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4. Apply a thin coat of clean transmission oil to the gasket of the new filter element. Install the new filter element by hand. When the gasket contacts the filter mounting base, tighten the transmission oil filter by an additional 3/4 turn. 5. Start the engine. Slowly operate the transmission controls in order to circulate the transmission oil. 6. Move the transmission control to the NEUTRAL position. Inspect the transmission oil filter for  leaks. 7. Check the transmission oil level. Reference: Refer to Operation and Maintenance Manual, “Transmission Oil Level - Check” for the correct procedure.

Illustration 259

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The sight gauge for the transmission oil level is located on the left side of the machine near the articulation joint. 1. Operate the machine for a few minutes in order to warm the transmission oil. 2. Park the machine on a hard, level surface. Put the transmission control into the NEUTRAL position. Lower the bucket to the ground with a slight downward pressure. Engage the parking brake. Note: Before the machine is started, the transmission oil level should be above “MIN START” mark (1) on the upper end of the sight gauge. 3. Check the oil level while the engine is running at low idle. While the engine is running at low idle, the transmission oil level should be between the “MIN” mark (3) and the “MAX” mark (2). 4. If necessary, remove the filler cap and add oil.

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159 Maintenance Section Transmission Oil Sample - Obtain

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Transmission Oil Sample Obtain

Window Washer Reservoir Fill

SMCS Code: 3080-008; 7542

SMCS Code: 7306-544

NOTICE Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.

NOTICE When operating in freezing temperatures, use Caterpillar or any commercially available nonfreezing window washer solvent.

Refer to Special Publication, NENG2500, “Caterpillar  Tools and Shop Products Guide” for tools and supplies suitable to collect and contain fluids on Caterpillar  products. Dispose of all fluids according to local regulations and mandates. 1. Operate the machine for a few minutes before obtaining the oil sample. This will thoroughly mix the transmission oil for a more accurate sample.

Illustration 261

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Window Washer Reservoir – The window washer reservoir is located on the right side of the machine. Fill the reservoir through the filler opening.

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Window Wiper Inspect/Replace SMCS Code: 7305-040; 7305-510 Illustration 260

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2. The sampling valve for the transmission oil is located on the transmission oil filter base on the left side of the articulation joint. Use the in-line sampling valve in order to obtain a sample of  transmission oil. Reference: For more information, refer to Special Publication, SEBU6250, “Caterpillar Machine Fluids Recommendations”, “S·O·S Oil Analysis” and Special Publication, PEHP6001, “How To Take A Good Oil Sample”. Illustration 262

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Inspect the wiper blades. Replace the wiper blades if  the wiper  blades are worn or damaged or if streaking occurs.