Curso Cat 320-330B Sistema STMG 1

Service Training MALAGA

320B/330B Hydraulic Excavators I. PRODUCT DESCRIPTION

COUNTER WEIGHT RADIATOR PUMP

ENGINE

OIL COOLER

BTY

HYD TANK

CONT VALVE

FUEL TANK

CTRLLR

RELAY BOX

CAB TOOL BOX

Francis Jun 98

320B330B HYDRAULIC EXCAVATORS CHAPTER : Product Description

COMPONENT LAYOUT

RADIATOR

PUMP

HYD TANK

OIL COOLER

CTLLR FUEL TANK

OIL COOLE R

CONT VALVE

CTLLR

FUEL TANK

HYD TANK

HYD TANK

CTLLR TOOL BOX

320B

322B

COUNTER WEIGHT

COUNTER WEIGHT

OIL COOLER

TOOL BOX

CAB

TOOL BOX

MODEL

PUMPS

FLOW

320A

2 Main 1 Pilot

370 l/min 20 l/min

320B

2 Main 1 Pilot

370 l/min 4O l/min

MODEL

PUMPS

FLOW

PUMP ENGINE

OIL COOLER

RELAY BOX FUEL TANK

CTRLLR

FUEL TANK

HYD TANK

RADIATOR

PUMP

HYD TANK

CONT VALVE

CAB

ENGINE

OIL COOLER

RELAY BOX FUEL TANK

CTRLLR

RELAY BOX

CONT VALVE

COUNTER WEIGHT

RADIATOR

RADIATOR ENGINE

BTY

HYD TANK

CONT VALVE

330B

COUNTER WEIGHT

BTY

ENGINE

CAB

BTY

325B

BTY

PUMP

CTLLR RELAY BOX

CAB

BTY

BTY

RADIATOR

PUMP

RELAY BOX

HYD TANK

TOOL BOX

OIL COOLER

CONT VALVE

RELAY BOX FUEL TANK

CTRLLR

TOOL BOX

CAB

OIL COOLE R

CONT VALVE

FUEL TANK

FUEL TANK CAB

RADIATOR ENGINE

CTRLLR

BTY

CONT VALVE

BTY

OIL COOLER

PUMP

ENGINE

ENGINE

CONT VALVE

COUNTER WEIGHT

BTY

RADIATOR

PUMP

ENGINE

HYD TANK

COUNTER WEIGHT

COUNTER WEIGHT

RADIATOR

330A

BTY

COUNTER WEIGHT PUMP

325A

322A

320A

TOOL BOX CAB

CAB

MODEL

PUMPS

FLOW

PRESSURE

32000 / 35000 kPa 3500 kPa

322A

2 Main 1 Pilot

410 l/min 20 l/min

32000 / 35000 kPa 3500 kPa

35000 kPa 4000 kPa

322B

2 Main 1 Pilot

410 l/min 40 l/min

35000 kPa 4000 kPa

MODEL

PUMPS

FLOW

PRESSURE

PRESSURE

PRESSURE

325A

2 Main 1 Pilot

420 l/min 20 l/min

32000 / 35000 kPa 3500 kPa

330A

2 Main 1 Pilot

466 l/min 20 l/min

32000 / 35000 kPa 3500 kPa

325B

2 Main 1 Pilot

210 l/min 37 l/min

35000 kPa 4000 kPa

330B

2 Main 1 Pilot

466 l/min 40 l/min

35000 kPa 4000 kPa

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DIFFERENCES FROM 300A HYDRAULIC EXCAVATORS

1. CONTROL VALVE 2. BOOM DRIFT REDUCTION VALVE 3. STICK DRIFT REDUCTION VALVE 4. HYDRAULIC LOCK VALVE 5. PILOT MANIFOLD 6. SWING MOTOR BRAKE RELEASE 7. TRAVEL PILOT VALVE 8. IMPLEMENT PILOT VALVE 9. PILOT PUMP FLOW RATE 10. TAMPING MODE 11. BLCV 12. CROSS SENSING

Page:

3

18

1

2

3

4

5

6 16

7

8

9

28 14

35

34

m

32 39

Page: 4

1. 2. 3. 4. 5. 6. 7. 8. 9. 14. 16. 17.

Stick 2 Control Valve Boom 1 Control Valve Bucket Control Valve Attachment Control Valve Right Travel Control Valve Left travel Control Valve Swing Control Valve Stick 1 Control Valve Boom 2 Control Valve Main Control Valve (Left Section) Main Relief Valve Line Relief Valve (Bkt rod end).

18. 28. 29. 30. 31. 32. 33. 34. 35. 37. 38. 39.

31 30

33 37

Line Relief Valve (Bkt head end) Line Relief Valve (stk head end) Line Relief Valve (Stk rod end) Inlet Port (Upper pump) Inlet Port (Lower pump) Boom Drift Reduction Valve Stick Combination Flow Port. PTL Signal Port MCV (Right Section0 Stick Line Relief Valve (Rod End) Stick Drift Reduction Valve Line Relief Valve (Bm head end)

38 29

MAIN CONTROL VALVE ( Outside View ) e. Return Port l. Return Port m. Outlet Combination Port

320B330B HYDRAULIC EXCAVATORS

17

CHAPTER : Product Description

l

e


ELECTRO/HYDRAULIC LOCK VALVE

B2

B4 B5

B1

B3

107-7058

A4

B5 B4 B3 B2 B1

T

A1

A3

A5

A2

P

A5 A4 A3 A2 A1

VALVE SCHEMATIC

Page:

5

PILOT OIL MANIFOLD SCHEMATIC

To Logic Circuit

Return Oil

From Stick Pilot Control Valve

To Stick Control Valve 2 LEVEL FINISH SOLENOID

121-1490

To Pump Regulator

To Swing Brake TRAVEL SPEED SOLENOID

121-1491

TRENCHING SOLENOID

121-1490

PRESSURE REDUCING VALVE

111-9916

Page:

From Main Control Valve Group

6

Pilot Pump

320B330B HYDRAULIC EXCAVATORS

Pilot Relieve valve

CHAPTER : Product Description

To Hydr. Actuation Valve


SWING CIRCUIT SCHEMATIC 1. 2. 3. 4. 5. 6. 7. 9. 10. a. b. c.

Swing Motor Rotary Group. Swing Anti-reaction Valve Spool Line Relief Valve Main Control Valve Slow Return Check Valve Lower Pump Upper Pump Solenoid Valve Swing Brake Port Port Makeup Port

9

10

1

3

c

2

4

a

5

b

7 6

Page:

7


TRAVEL PILOT CONTROL VALVE DIFFERENCES

300A 110 - 5608

300B 123 - 2148

Page:

8


320 -330B TRAVEL PILOT CONTROL VALVE

Pilot Pressure

Travel Speed

T

P

4000 kPa

300A

300B

Lever Stroke

Page:

9


PILOT CONTROL VALVE

From Main Control Valve

1

c

2

3

b

a

300A

To Main Control Valve

300B Pilot Pump

123-2147

110-5621

d e f g Fig. A

Pilot Pump



Pilot Pressure

4000 kPa 3000 kPa

300A 800 kPa

300B Lever Stroke

1. Rod 2. Spring 3. Spool a. Line to control valve b. Line from control valve c. Return passage d. Larg diameter e. Small diameter f. Large shoulder area g. Small shoulder area h. Inlet passage

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10


ENGINE / PUMP CONTROL

Instrument Panel

Engine Speed Sensor

Throttle Dial

Engine Dial Position

Feed Back Sensor

ELECTRONIC CONTROL UNIT

Governor Motor Engine Speed

(Controller) Implement Pressure Switch

Pump

Backup Circuit

Pump Flow

Travel Pressure Switch Attachment Pressure Switch

Proportional Reducing Valve

Page:

11


BACKUP SYSTEM

1

3

M

4

2 6

24V

7 5 10 8 9

1. Controller 2. Governor Actuator Drive Circuit 3. Governor Actuator 4. Speed Change Switch 5. Swing Parking Brake Drive Circuit 6. Backup Resistor 7. Swing Parking Brake Valve 8. Proportional reducing Valve Drive Circuit 9. Buckup Switch 10. Proportional Reducing Valve

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INSTRUMENT PANEL

POWER PLUS MODE

BOOM UP PRIORITY Kw

SWING PRIORITY

AEC ON/OFF AUT M/min

SPEED TRAVEL HIGH/LOW

FINE CONTROL

USER MODE

ALARM CANCEL

R

Page:

13


300A /300B INSTRUMENT PANEL DIFFERENCES

Kw

AU T M/mi n

POWER

AEC

WORK ON

WIPER

LIGHT

1 2

TRAVEL SPEED

WASHER

1 2 ALARM CANCEL R

300A HEX

300B HEX

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14


POWER MODE SELECTION POWER UP

FINE CONTROL MODE Kw

Kw

ECONOMY

AUT M m in

R

INSTRUMENT PANEL

If the power mode is on the economy position during trave, engine output automatically increases by one level to increase travel speed.

Power Mode position

Excavation

Travel

High power

100 %

100 %

Economy

90 %

100 %

Fine Control

70 %

70 %

NOTE: The hammer mode must be activated with Power + Mode and Boom Priority selected Page:

15


POWER MODE APPLICATION

The table below gives some application examples with suggested power modes ;

POWER

CHARACTERISTICS

Power Up

100 %

Engine power is maximazed. HP is at maximum and underspeed control is in effect at th thrttle dial "10" position

Economy

90 %

General setting. Fuel economy is good and sound level is reduced.

70 %

For work in regions requiring additional sound level reduction, this mode can be used for precision work, although is lowr

POWER MODE

FINE CONTROL

Mode

% of Avail HP

Gov. Setting

Eng. Speed

Power Up

100

10

2180 rpm

Economy

90

9

2050 rpm

Fine Control

70

7

1750 rpm

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16


WORK MODE SELECTOR

BOOM UP PRIORITY FINE CONTROL

SWING PRIORITY

Kw

AUT M m in

USER MODE

R

Only one of the four switches on the left side of the instrument panel may be selected. When a new switch is selected, the previous switch automatically turns off. If the engine is switched off, the position of these switches is recorded, and the switches preset to this position when the engine is started again.

NOTE: The hammer mode must be activated with Power + Mode and Boom Priority selected

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17


WORK MODE APPLICATION

WORK MODE

APPLICATION

CHARACTERISTICS

Loading Excavation Level Finiching

Priority is given to boom up, so in simultaneous swing and boom up operation, boom up speed is faster.

Swing Priority

Truck loading/ Trenching with large swing angle

Swing is given priority. Consequently, swing speed is excellent, suiting this Work Mode to tasks where greater swing force is needed.

Fine Control

Lifting Work Precise Finishing work

Interference between cylinders is slight, and the engine is controlled at low speed. This allows slow, precise movements.

Tamping Mode

Efficient for tamping operation

This mode is effective for rapid compacting. This mode offers smooth boom up and down operation without machine jack-ups

Hammer Mode

Hammer application

The attachment pedal operation adjust to previously selected oil flow and oil pressure. Therefore, this mode is suitable for hydraulic attachment operation.

Determined according to operator preference

Work Mode, Power Mode, AEC, travel speed, max engine speed and hydraulic power can be memorize as a Customer Mode, according to the customer's preference. When this mode is selected, the memorized information is called up.

Boom Up Priority

User Mode

Customer Mode

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18


SETTING CUSTOMER MODE Example

Kw

UT A M m in

1. CLOCK ADJUSTMENT The hour setting can be changed by pressing Alarm Cancel Switch and Boom Priority Switch at the same time. The minutes can be changed by pressing the Alarm Cancel Switch and Power Mode Switch at the same time.

R

2. ACCESS TO CUSTOMER SETTING MODE Push both the Travel alarm cancel switch and the User Mode switch together for more than two seconds. When the seven-segment display flashes U1, U2 or U3, Customer Mode can be set using the switches on the instrument panel listed below. HAMMER MODE CAN NOT BE SET BY THE CUSTOMER. The setting is available only in the Service Mode BOOM UP PRIORITY

When this switch is pressed, the flashing figure on the display increases. SWING PRIORITY

When this switch is pressed, the flashing figure on the display decreases. FINE CONTROL

When this switch is pressed, the flashing digit will move right. USER MODE

When this switch is pressed, the flashing digit will move left. NOTE : Only flashing digit can be changed 3. ENDING CUSTOMER SETTING MODE To exit, push both the Travel Alarm Cancel switch and the User Mode switch for more than two seconds. When the seven-segments display shows the time and throttle dial position, the monitor function has returned to its normal condition. 4. SELECTING SUB-MODE Two digit of left side show Sub-mode

U1- - - - This indicates Tamping Mode. No setting is required for Tamping Mode U2- - - - This indicates Hammer Mode. The setting of Hammer Mode is available only in the Service Mode

U3- - - - This indicates Customer Mode. The setting for Customer Mode can now be set.

NOTE : "- - - -" means no data is displayed

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1

5

2

6

3

7

4

SETTING CUSTOMER MODE Example

8 R

5. SETTING THE CUSTOMER MODE The third digit is used to select one of eight general parameters. The fourth to the sixth digits used for more specific parameter setting. 6 CUSTOMER MODE (First digit shows "U", second digit shows "3")

First second digit

Third digit Setting

Function

Fourth to sixth digits Setting

Function

--1

Select Boom Priority Mode

--2

Select Swing Priority Mode

1

Select Work Mode

--3

Select Fine Control Mode

2

Select Power Mode

--1

Select Economy Mode

--2

Select Power Up Mode

3

Select AEC Stage

--1

Select first-stage AEC

--2

Select second-stage AEC

Select Travel Speed

--1

Travel speed is fixed at low speed

--2

Automatic two-speed travel is selected

---

The increment is 0.1 second and the range is 0.1 second to 20 seconds. The first setting for the delay time is 3 seconds, and the display shows "U3 5-30."

U3 Customer Mode 5

Set delay time for AEC

Default 30 ---

6

Set engine speed in the second stage for AEC

Default 1300

7

Limit the maximum throttle dial

--Default 10

Set hydraulic HP

---

8

The increment is 10 rpm and the range is 800 rpm to 2200 rpm. The first setting is 1300 rpm. If the display shows "U3 6-95," engine speed in the secondstage AEC is set to 950 rpm. Upper limit of throttle dial can be set from 1 to 10. The first setting is dial 10 and display shows "U3 7-10."

Hydraulic HP can be set on "percent" of maximum hydraulic HP. The increment is 1 percent and the range is 0 to 100 Default percent. First setting shows"U3 8-70" and 100% hydraulic HP is set on 70% of max. HP

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Curso Cat 320-330B Sistema STMG 1

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