Download - Curso Cat 320-330B Sistema STMG 1

RADIATOR

PUMP

CONTVALVE

OILCOOLER

CABTOOLBOX

COUNTER WEIGHT

FUELTANK

HYDTANK

CT

RLL

R

RELAY BOX

ENGINE

BT

Y

Service TrainingMALAGA

320B/330B

FrancisJun 98

I. PRODUCT DESCRIPTION

Hydraulic Excavators

2Page:

CHAPTER : Product Description

320B330B HYDRAULICEXCAVATORS

COMPONENT LAYOUT

325A

MODEL PUMPS FLOW PRESSURE

325A2 Main1 Pilot

420 l/min 20 l/min

32000 / 35000 kPa3500 kPa

325B 210 l/min 37 l/min

35000 kPa4000 kPa

2 Main1 Pilot

RADIATOR

ENGINE

PUMP

CONTVALVE

OILCOOLER

CAB

COUNTER WEIGHT

HYDTANK

FUELTANK

CTLLR

BTYRELAY BOX

RADIATORPUMP

CONTVALVE

OILCOOLER

CAB

TOOLBOX

COUNTER WEIGHT

FUELTANK

HYDTANK

CT

RLL

R

ENGINE

BT

Y

325B

320A

RADIATOR

ENGINE

PUMP

CONTVALVE

OILCOOLER

CAB

CTLLR

TOOLBOX

BT

Y

COUNTER WEIGHT

HYDTANK

FUELTANK

RADIATOR

BT

Y

ENGINE

PUMP

CONTVALVE

OILCOOLER

CAB

TOOLBOX

COUNTER WEIGHT

HYDTANK

FUELTANK

320B

CT

RLL

R

RELAY BOX RELAY BOX

320A2 Main1 Pilot

370 l/min 20 l/min

32000 / 35000 kPa3500 kPa

330A2 Main1 Pilot

466 l/min 20 l/min

32000 / 35000 kPa3500 kPa




322A

RADIATOR

ENGINE

PUMP

CONTVALVE

OILCOOLER

CAB

CTLLR

TOOLBOX

BT

Y

COUNTER WEIGHT

HYDTANK

FUELTANK

RADIATOR

BT

Y

ENGINE

PUMP

CONTVALVE

OILCOOLER

CAB

TOOLBOX

COUNTER WEIGHT

HYDTANK

FUELTANK

322B

CT

RLL

R

RELAY BOX

330A

RADIATOR

ENGINE

PUMP

CONTVALVE

OILCOOLER

CAB

COUNTER WEIGHT

HYDTANK

FUELTANK

CTLLR

BTYRELAY BOX

RADIATORPUMP

CONTVALVE

OILCOOLER

CAB

TOOLBOX

COUNTER WEIGHT

FUELTANK

HYDTANK

CT

RLL

R

ENGINE

BT

Y

330B

RELAY BOX

BT

YB

TY

2 Main1 Pilot320B 370 l/min

4O l/min35000 kPa4000 kPa

322A 2 Main1 Pilot

410 l/min 20 l/min

32000 / 35000 kPa3500 kPa

322B 2 Main1 Pilot

410 l/min 40 l/min

35000 kPa4000 kPa

330B2 Main1 Pilot

466 l/min 40 l/min

35000 kPa4000 kPa

3Page:



DIFFERENCES FROM 300AHYDRAULIC 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

4P

age:

CH

AP

TE

R : P

rod

uct D

escriptio

n

320B330B

HY

DR

AU

LIC

EX

CA

VATO

RS

17

1842 3

165 6 7 8 9

29

28

1

3230

31

e l

14

33

34

m

35

MAINCONTROLVALVE

( Outside View )

1. Stick 2 Control Valve2. Boom 1 Control Valve3. Bucket Control Valve4. Attachment Control Valve5. Right Travel Control Valve6. Left travel Control Valve7. Swing Control Valve8. Stick 1 Control Valve9. Boom 2 Control Valve14. Main Control Valve (Left Section)16. Main Relief Valve17. Line Relief Valve (Bkt rod end).

18. Line Relief Valve (Bkt head end)28. Line Relief Valve (stk head end)29. Line Relief Valve (Stk rod end)30. Inlet Port (Upper pump)31. Inlet Port (Lower pump)32. Boom Drift Reduction Valve33. Stick Combination Flow Port.34. PTL Signal Port35. MCV (Right Section037. Stick Line Relief Valve (Rod End)38. Stick Drift Reduction Valve39. Line Relief Valve (Bm head end)

37 38

e. Return Portl. Return Portm. Outlet Combination Port

39

5Page:



B4B5 B3 B2 B1 T P

A5 A4 A3 A2 A1

ELECTRO/HYDRAULIC LOCK VALVE

B5

B4

B3

B2

B1

A5

A4

A3

A2

A1

VALVE SCHEMATIC

107-7058

6P

age:

CH

AP

TE

R : P

rod

uct D

escriptio

n

320B330B

HY

DR

AU

LIC

EX

CA

VATO

RS

Pilot Pump

PRESSUREREDUCINGVALVE

TRAVEL SPEED SOLENOID

TRENCHING SOLENOIDLEVEL FINISH

SOLENOID

From Main ControlValve Group

ReturnOil

From StickPilot ControlValve

To PumpRegulator

ToSwingBrake

To LogicCircuit

PilotRelievevalve

To StickControlValve 2

PILOT OIL MANIFOLD SCHEMATIC

To Hydr.ActuationValve

111-9916121-1490121-1491121-1490

7Page:



1

3

b

4

2

a

5

SWING CIRCUIT SCHEMATIC

6

7

10

9

c

1. Swing Motor Rotary Group.2. Swing Anti-reaction Valve Spool3. Line Relief Valve4. Main Control Valve5. Slow Return Check Valve6. Lower Pump7. Upper Pump9. Solenoid Valve10. Swing Brakea. Portb. Portc. Makeup Port

8Page:



TRAVEL PILOT CONTROL VALVE

DIFFERENCES

300A 300B

123 - 2148110 - 5608

9Page:



320 -330BTRAVEL PILOT CONTROL VALVE

Tra

vel S

peed

Lever Stroke

300B300A

Pilo

t Pre

ssur

e

4000 kPa

T P

10Page:



PILOT CONTROL VALVE

From MainControl Valve

To MainControl Valve

Pilot Pump

1

b23

a

c

1. Rod2. Spring3. Spoola. Line to control valveb. Line from control valvec. Return passaged. Larg diametere. Small diameterf. Large shoulder areag. Small shoulder areah. Inlet passage

Pil

ot P

ress

ure

Lever Stroke

300A

300B

300A300B

Fig. A

d

e

g


Pilot Pump


f

4000 kPa

3000 kPa

800 kPa

123-2147

110-5621

11Page:



(Controller)

Feed Back Sensor

ENGINE / PUMP CONTROL

ProportionalReducingValve

PumpEngineThrottleDial

ImplementPressure Switch

Travel PressureSwitch

AttachmentPressure Switch

Backup Circuit

Engine Speed Sensor

Dial Position

Pump Flow

Engine Speed

Governor Motor

Instrument Panel

ELECTRONIC CONTROL UNIT

12Page:



BACKUP SYSTEM

M

24V

1

2

3

4

5

6

7

10

8

9

1. Controller2. Governor Actuator Drive Circuit3. Governor Actuator4. Speed Change Switch5. Swing Parking Brake Drive Circuit6. Backup Resistor7. Swing Parking Brake Valve8. Proportional reducing Valve Drive Circuit9. Buckup Switch10. Proportional Reducing Valve

13Page:



INSTRUMENT PANEL

R

Kw

AUT

BOOM UPPRIORITY

SWINGPRIORITY

FINE CONTROL

USER MODE

POWER PLUS MODE

AECON/OFF

SPEED TRAVEL HIGH/LOW

ALARM CANCEL

M/min

14Page:



INSTRUMENT PANEL300A /300B

DIFFERENCES

POWER WORK

ON

LIGHT WIPER WASHER

AEC

TRAVEL SPEED ALARM CANCEL

1122

1122

300B HEX300A HEX

R

Kw

AUTM/min

15Page:



POWER MODE SELECTION

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

Power Mode position

Excavation

High power

Economy

100 %

INSTRUMENT PANEL

POWER UP

Kw

ECONOMY

Travel

90 %

100 %

100 %

R

Kw

M m in

FINE CONTROL MODE

Fine Control 70 % 70 %

AUT

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

16Page:



POWER MODE APPLICATION

The table below gives some application examples with suggestedpower modes ;

POWER MODE

CHARACTERISTICS

Mode % of Avail HP Gov. Setting Eng. Speed

Power Up

Economy

FineControl

100 10 2180 rpm

90 9 2050 rpm

70 7 1750 rpm

Power Up 100 %

Economy

70 % FINECONTROL

Engine power is maximazed. HP is atmaximum and underspeed control is ineffect at th thrttle dial "10" position

POWER

90 %General setting. Fuel economy is goodand sound level is reduced.

For work in regions requiring additionalsound level reduction, this mode can beused for precision work, although is lowr

17Page:



WORK MODE SELECTOR

Kw

AUT

R

M m in

BOOM UPPRIORITY

SWINGPRIORITY

FINECONTROL

USERMODE

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 engineis switched off, the position of these switches is recorded, and the switches preset to thisposition when the engine is started again.

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

18Page:



Boom Up Priority

SwingPriority

FineControl

UserMode

WORK MODE APPLICATION

WORK MODE APPLICATION

CHARACTERISTICS

LoadingExcavationLevel Finiching

Truck loading/Trenching withlarge swing angle

Lifting WorkPrecise Finishingwork

Tamping Mode

Hammer Mode

Customer Mode

Priority is given to boom up, so in simultaneousswing and boom up operation, boom up speed isfaster.

Swing is given priority. Consequently, swing speedis excellent, suiting this Work Mode to tasks wheregreater swing force is needed.

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

Efficient fortamping operation

Hammerapplication

Determinedaccording tooperatorpreference

This mode is effective for rapid compacting. Thismode offers smooth boom up and down operationwithout machine jack-ups

The attachment pedal operation adjust to previouslyselected oil flow and oil pressure. Therefore, thismode is suitable for hydraulic attachment operation.

Work Mode, Power Mode, AEC, travel speed, maxengine speed and hydraulic power can be memorizeas a Customer Mode, according to the customer'spreference. When this mode is selected, thememorized information is called up.

19Page:



SETTING CUSTOMER MODE

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 onthe instrument panel listed below. HAMMER MODE CAN NOT BE SET BY THE CUSTOMER. The setting isavailable only in the Service Mode

BOOM UPPRIORITY

SWINGPRIORITY

FINECONTROL

USERMODE

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

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

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

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 morethan two seconds. When the seven-segments display shows the time and throttle dialposition, the monitor function has returned to its normal condition.

4. SELECTING SUB-MODE

Two digit of left side show Sub-mode

U1- - - -

U2- - - -

U3- - - -

This indicates Tamping Mode. No setting is required for Tamping Mode

This indicates Hammer Mode. The setting of Hammer Mode is availableonly in the Service Mode

This indicates Customer Mode. The setting for Customer Mode can nowbe set.

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

Kw

AUT

R

M m in

Example

1. CLOCK ADJUSTMENT

The hour setting can be changed by pressing Alarm Cancel Switchand Boom Priority Switch at the same time. The minutes can bechanged by pressing the Alarm Cancel Switch and PowerMode Switch at the same time.

20Page:



5. SETTING THE CUSTOMER MODE

The third digit is used to select one of eight general parameters. The fourth to the sixthdigits used for more specific parameter setting.

6 CUSTOMER MODE (First digit shows "U", second digit shows "3")

Firstsecond digit

U3Customer Mode

Third digit Fourth to sixth digits

Setting Function Setting Function

1

2

3

5

6

7

8

Select Work Mode

- - 1

- - 2

- - 3

Select Boom Priority Mode

Select Swing Priority Mode

Select Fine Control Mode

SelectPower Mode

- - 1 Select Economy Mode

- - 2 Select Power Up Mode

Select AECStage

- - 1 Select first-stage AEC

- - 2 Select second-stage AEC

SelectTravelSpeed

- - 1

- - 2

Travel speed is fixed at low speed

Automatic two-speed travel is selected

Set delay timefor AEC

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

The increment is 10 rpm and therange is 800 rpm to 2200 rpm. The firstsetting is 1300 rpm. If the display shows"U3 6-95," engine speed in the second-stage AEC is set to 950 rpm.

- - -Set enginespeed in thesecond stagefor AEC

Limit themaximumthrottle dial

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

- - -Set hydraulic HP Hydraulic HP can be set on "percent" ofmaximum hydraulic HP. The increment is1 percent and the range is 0 to 100percent. First setting shows"U3 8-70" andhydraulic HP is set on 70% of max. HP

SETTING CUSTOMER MODE

R

Example

1

2

3

4

5

6

7

8

Default 100%

Default 10

Default 1300

Default 30