1 service and maintenance.pdf

Service and Maintenance Machine Serial Number Test Procedure Backhoe Lubrication Loader Lubrication Stabilizer Lubrication Front Axle Lubrication Drive Shaft Lubrication Cab Ventilation Filter Extendible Dipper Wear Pads (Option) Stabilizer Wear Pads

B L 6 0

Machine Serial Number

Volvo Construction Equipment Volvo Compact Equipment S.A.S. F-01303 Belley, France.

Model/Type Product Identification Number Machine mass kg Engine net power kW

BL 71 BL71D10021 8600 kg 70 kW

Manufacturing year

2003

Delivery year

2003

Made in Poland

2 3 3 3 8 8 1 1

BL71 D 10021 Machine Serial Number

Model Diesel

Test Proced Procedure ure Test Procedure of BL60/BL61

Test Procedure of BL70/BL71

B L 6 0


1/8

Tests 1. Engine RPM 2. delta p Open Center 3. Checking loader relief valve 4. Checking backhoe relief valve 5. Checking steering unit relief valve 6. Hammer Valve settings 7. Optional hand held tool setting 8. Max. pump flow 9. Stall tests

Check Points

Check Points

2/8

Pressure check points at the Backhoe Valve

3

2

1

1

Checking point for HP-pressure


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2. Checking delta p open centre Test conditions: - Hyd.- Oil temperature ca. 50 °C (+/- 5°C) - delta p Pressure is calculated: Hp – Ls = delta p - HP pressure is checked at the HP pressure check port (1) at the inlet element of the Backhoe valve with digital pressure check tool - LS pressure is checked at LS pressure check port (2) at the inlet element of the Backhoe valve with digital pressure check tool - Start the engine (2200 rpm) and read off delta p: Check value (HP - LS): 1,9 ± 0,1 MPa (19 bar ± 1 bar), (276 ± 15 psi) Test Engine RPM

Tested Pressure

2200 rpm

.........bar

Expected Pressure 19 bar ± 1 bar

3. Checking loader relief valve (loader, max. pressure) Test conditions:


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4. Checking backhoe relief valve (backhoe, max. pressure) Test conditions: - Hyd. oil temperature ca. 50° C (+/- 5°C) - HP pressure is checked at the HP pressure check port (1) at the inlet element of the Backhoe valve with digital pressure check tool - LS pressure is checked at the LS pressure check port (2) at the inlet element of the Backhoe valve with digital pressure check tool - engine speed is read on the tachometer on the right side console in the cabin - checked under load, one function (stabilizer for example) end of stroke - adjust backhoe relief valve if necessary Test Engine RPM

Tested Pressure Hp

ca. 2350 rpm

.... bar

Ls ....bar

Expected Pressure Hp 250 bar ± 5 bar

Ls (HP - 19) bar


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6. Hammer valve settings Test conditions: - Hyd. oil temperature ca 50° C (+/- 5°C) Procedure Hammer relief valve

- fit a flow meter with adjustable restrictor and pressure sensor on the hammer quick couplers - one function (stabilizer for example) must be permanently end of stroke - press enable switch and the hammer button on the floor mat - adjust the restrictor to the max. pressure and read of the pressure in the hammer line - Engine speed is read on the tachometer on the right side console in the cabin Test Hammer relief valve Engine Speed

Tested pressure in hammer line

Ca 2350 rpm

........... bar

Expected Pressure 210 bar


6/8

7. Optional hand held tool setting Test conditions: - Hyd. oil temperature ca 50° C (+/- 5°C) Procedure hand held tool

- fit a flow meter with adjustable restrictor and pressure sensor on the hand held tool quickcouplers - one function (stabilizer for example) must be permanently end of stroke - activate hand held tool - adjust the restrictor to the max. pressure and read off the pressure in the hand held tool line - Engine speed is read on the tachometer on the right side console in the cabin Test optional hand held tool Engine Speed


Ca 2350 rpm

........... bar



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Note: Before doing flow checks, please check the cycle times. It proves that flows (apart from max pump flow) are correct without opening the hydraulic circuit.

8. Max. pump flow-check Test conditions:

n o i t c u d

- Hyd Oil temperature ca. 50° C (+/- 5°C) Procedure Step 1

- disconnect hammer supply line on the pump to avoid leakage through the hammer valve (2,8 l/min) and close with plugs Step 2 Flow meter with temperature sensor

- disconnect hose coming from the main pump and going to the main control valve and connect to flow meter - connect outgoing hose from flowmeter to the main control valve


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11. Stall tests Test - Hyd Oil temperature ca. 50° C (+/- 5°C) - warm Engine and transmission - max Engine RPM, 2350 rpm - curl loader bucket to end of stroke - Engine RPM is read on the tachometer on the right side console in the cabin

n o i t c u d o r

Engine RPM

Tested hyd. Stall speed

Ca 2350 rpm

........ rpm

Expected hyd. Stall speed 2250 rpm +/- 50

Test conditions Torque Converter stall: - Hyd Oil temperature ca. 50° C (+/- 5°C) - warm Engine and transmission

- select parking brake on, engage gear lever into forth, max. Engine RPM, engage forward/reverse lever into forward - Engine speed is read on the tachometer on the right side console in the cabin i

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Tests 1. Engine RPM 2. Servo Pressure 3. Stand by situation 4. delta p Pressure, setting of the spring in the FR-valve 5. Power regulation, setting of the spring in the LR-valve 6. Max. Hp Pressure, setting of the relief-valve in the LS-line 7. Setting of the pressure limitation of the steering unit 8. Max. Pump flow-check 9. Pump power regulation-check 10. Hammer valve settings

Check Points

Check Points

2/10

Pressure check points at the pump

2 3

1 1 2

Checking point for HP-pressure Checking point for LS-pressure


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2. Servo Pressure Test conditions: - Hyd.- Oil temperature

ca. 50° C (+/- 5°C)

- Pressure is checked at servo pressure check port near the servo pump - Engine RPM is read on the tachometer on the right side console in the cabin Test Engine Speed 2200 rpm

Tested Pressure .........bar

3. Stand by situation Test conditions: - Hyd Oil temperature

ca. 50° C (+/- 5°C)

Expected Pressure 37.5 bar –0 / +5


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4. delta p Pressure, setting of the spring in the FR-valve Test conditions: - Hyd Oil temperature

ca. 50° C (+/- 5°C)

- delta p Pressure is calculated: Hp – Ls = delta p - Hp-Pressure is checked at Hp pressure check port near the main pump with digital pressure check tool - LS-Pressure is checked at Ls pressure check port near the main pump with digital pressure check tool - Engine speed is read on the tachometer on the right side console in the cabin - Hp pressure must be below 115 bar to avoid beeing involved in power regulation of the pump

- delta p is checked while moving one function with a slow and constant speed

Attention: Speed must be absolutly constant! Test


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5. Power regulation, setting of the spring in the LR-valve Test conditions: - Hyd Oil temperature

ca. 50° C (+/- 5°C)

- Disconnect plug at LR Valve and fit a hose which goes pressureless into the hyd.-tank - one function (stabilizer for example) must be permanently end of stroke - Hp-Pressure is checked at Hp pressure check port near the main pump with digital pressure check tool - Engine RPM is read on the tachometer on the right side console in the cabin Test Engine Speed Ca 2350 rpm

Tested Pressure, Hp ........bar

Expected Pressure, Hp 20 bar +/- 3 bar

6. Max. Hp Pressure, setting of the relief-valve in the LS-line


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7. Setting of the pressure limitation of the steering unit Test conditions: - Hyd Oil temperature

ca. 50° C (+/- 5°C)

- Hp-Pressure is checked at Hp pressure check port near the main pump with digital pressure check tool - LS-Pressure is checked at Ls pressure check port near the main pump with digital pressure check tool - Engine speed is read on the tachometer on the right side console in the cabin - Checked with steering cylinder permanently end of stroke

Test Engine RPM Ca 2350 rpm

Tested Pressure Hp Ls

Expected Pressure Hp

Ls

..... bar

175 bar +0/-5

(Hp – 21)bar

..... bar


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8. Max. Pump flow-check Test conditions: - Hyd Oil temperature

ca. 50° C (+/- 5°C)

Procedure Step 1 - disconnect hammer supply line on the pump to avoid leakage through the hammer valve (2,8 l/min) and close with plugs Step 2 Flow meter with temperature sensor - disconnect hose coming from the main pump and going to the main control valve and connect to flow meter


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9. Pump power regulation-check Same conditions and procedure like 8, but: !!adjust the restrictor to the specified flow and read of the pressure!! Loader mode ( 1. no gear selected on right hand gear lever, 2. forward/reverse lever engaged into forward)

Engine RPM

spec. Flow

Tested Pressure Hp

Ca 2350 rpm

130 l/min

........... bar

115 bar +/-5

Ca 2350 rpm

84 l/min

........... bar

195 bar +/-10

Excavator mode ( 1. no gear selected on right hand gear lever, 2. forward/reverse lever in neutral position)

Expected Pressure Hp


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10. Hammer valve settings Test conditions: - Hyd Oil temperature

ca. 50° C (+/- 5°C)

Procedure Hammer relief valve

- fit a flow meter with adjustable restrictor and pressure sensor on the hammer quick couplers - one function (stabilizer for example) must be permanently end of stroke - press hammer button on the flor mat - adjust the restrictor to the max. pressure and read of the pressure in the hammer line - Engine speed is read on the tachometer on the right side console in the cabin Test Hammer relief valve Engine Speed


Ca 2350 rpm

........... bar



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11. Stall tests Test conditions hydraulic stall: - Hyd Oil temperature ca. 50° C (+/- 5°C) - warm Engine and transmission - max Engine RPM, 2350 rpm - curl loader bucket to end of stroke - Engine RPM is read on the tachometer on the right side console in the cabin Engine RPM

Tested hyd. Stall speed

Ca 2350 rpm

........ rpm

Expected hyd. Stall speed 2250 rpm +/- 50

Test conditions Torque Converter stall: - Hyd Oil temperature ca. 50° C (+/- 5°C) - warm Engine and transmission - select parking brake on, engage gear lever into forth, max. Engine RPM, engage forward/reverse lever into forward - Engine speed is read on the tachometer on the right side console in the cabin i

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Backhoe Lubrication

1/2

1 3

7 1

5

4

6 4

2

2

3 7 points

4 points

Backhoe Lubrication

2/2

9

8

10 11 12 7

6 5

12 points

3 1 4 2

Loader Lubrication

11

1/2

10 12 9 13, 14 1 8

2 5

7

6

15

15 points 4

3

Loader Lubrication

2/2

2

1

3

2 x 3 points

Stabilizer Lubrication Stabilizer Lubrication BL60/BL70

Stabilizer Lubrication BL61/BL71

B L 6 0

Stabilizer Lubrication

BL60/BL70

1

2

3, 4

2 x 4 points

Stabilizer Lubrication

BL61/BL71

2 points

Front Axle Lubrication

2 + 3 points

Drive Shaft Lubrication

6 points

Cab Ventilation Filter

B

A

L68993A

A Filter cover B Filter lockings

Extendible Dipper Wear Pads (Option)

1002947

1002971

1 service and maintenance.pdf

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