CAT 320B▪330B Service Training I.pdf

Service Training MALAGA

320B/330B Hydraulic Excavators I. PRODUCT DESCRIPTION

COUNTER WEIGHT RADIATOR PUMP

ENGINE

OIL COOLER

HYD TANK

CONT VALVE Y T B

RELAY BOX

FUEL TANK

TOOL BOX

R L L R T C

CAB

Francis

320B330B HYDRAULIC EXCAVATORS CHAPTER : Product Description

COMPONENT LAYOUT 320A COUNTER WEIGHT

RADIATOR

PUMP

ENGINE OIL COOLER

HYD TANK

Y T B

CONT VALVE

HYD TANK

PUMP

ENGINE OIL COOLER

OIL COOLE Y R T

CTLLR

B

FUEL TANK

HYD TANK

HYD TANK

CTLLR TOOL BOX

CAB

TOOL BOX

320B

322B

COUNTER WEIGHT

COUNTER WEIGHT

RADIATOR

PUMP

PUMP

ENGINE

HYD TANK

CONT VALVE

RELAY BOX FUEL TANK

TOOL BOX

RELAY BOX

CTLLR CAB

BTY

Y T B

R L L R T C

CAB

HYD TANK

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

330B COUNTER WEIGHT

RADIATOR

RADIATOR

PUMP

PUMP ENGINE

ENGINE

OIL COOLER

RELAY BOX FUEL TANK

CAB

BTY

COUNTER WEIGHT

RADIATOR

CONT VALVE

RELAY BOX

325B

ENGINE OIL COOLER

OIL COOLE R

CONT VALVE

FUEL TANK

FUEL TANK CAB

RADIATOR ENGINE

CONT VALVE

Y T B

CTLLR FUEL TANK

COUNTER WEIGHT

RADIATOR

PUMP

ENGINE

CONT VALVE

330A

COUNTER WEIGHT

COUNTER WEIGHT

RADIATOR

PUMP

325A

322A

Y T B

R L L R T C

CAB

HYD TANK

OIL COOLER

CONT VALVE RELAY

FUEL TANK

Y T BOX B

Y T B

HYD TANK

TOOL BOX

OIL COOLER Y T

RELAY BOX B FUEL TANK

R L L R T C

CONT VALVE

R L L R T C

TOOL BOX CAB

CAB

MODEL

PUMPS

FLOW

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

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


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

1

2

3

4

5

6

18

8

7

9

16

28 14

35

34

m

l

e

39

P a g e : 4

31

17

32

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

C H A P T E R :

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.

33

30

37

38 29

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)

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


ELECTRO/HYDRAULIC LOCK VALVE

B2

B4 B5

B3

107-7058

B1

P r o d u c t D e s c r i p t i o n

3 2 0 B E 3 X 3 C 0 A B V H A Y T O D R R S A U L I C


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

PILOT OIL MANIFOLD SCHEMATIC

Return Oil

From Stick Pilot Control Valve

To Logic Circuit

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

To Hydr. Actuation Valve

Pilot Relieve valve

P a g e :

From Main Control Valve Group

6

Pilot Pump


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

C H A P T E R : P r o d u c t D e s c r i p t i o n

3 2 0 B E 3 X 3 C 0 A B V H A Y T O D R R S A U L I C


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

b

5 7 6


TRAVEL PILOT CONTROL VALVE DIFFERENCES

300A 110 - 5608

300B 123 - 2148


320 -330B TRAVEL PILOT CONTROL VALVE

T

d e e p S l e v a r T

e r u s s e r P t o l i P

P

4000 kPa

300A

300B

Lever Stroke


PILOT CONTROL VALVE

From Main Control Valve 1

c

2

3

b

a

To Main Control Valve

300A

300B Pilot Pump

123-2147

110-5621

d e f g Fig. A

Pilot Pump



4000 kPa e r u s s e r P t o l i P

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


ENGINE / PUMP CONTROL

Instrument Panel

Engine Speed Sensor

Engine Throttle Dial

Dial Position

Pump

Feed Back Sensor

ELECTRONIC CONTROL UNIT

Governor Motor Engine Speed Backup Circuit

(Controller) Implement Pressure Switch

Pump Flow

Travel Pressure Switch Attachment Pressure Switch

Proportional Reducing Valve


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


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


300A /300B INSTRUMENT PANEL DIFFERENCES

Kw

AU T M/mi n

AEC

WORK

POWER

ON

WIPER

LIGHT

1 2 TRAVEL SPEED

WASHER

1 2 ALARM CANCEL R

300A HEX

300B HEX


POWER MODE SELECTION POWER UP

FINE CONTROL MODE

ECONOMY AUT

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


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


WORK MODE SELECTOR

BOOM UP PRIORITY FINE CONTROL

SWING PRIORITY USER MODE

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


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


SETTING CUSTOMER MODE Example

Kw

U T A Mm 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


SETTING CUSTOMER MODE 1

5

2

6

3

7

4

8

Example

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

1

2

3

U3 Customer Mode 5

Function

Fourth to sixth digits Setting

Function

--1

Select Boom Priority Mode

--2

Select Swing Priority Mode

--3

Select Fine Control Mode

Select Power Mode

--1

Select Economy Mode

--2

Select Power Up Mode

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."

Select Work Mode

Set delay time for AEC

Default 30

6

--Set engine speed in the second stage Default for AEC 1300

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.

7

Limit the maximum throttle dial

Upper limit of throttle dial can be set from 1 to 10. The first setting is dial 10 and display shows "U3 7-10."

Set hydraulic HP 8

---

Default 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 ---

CAT 320B▪330B Service Training I.pdf

Recommend Documents