SENR6037

20Page

1993 Caterpillar

All Rights Reserved

Printed in U.S.A.

SENR6037

October 1993

350 and 350 L Excavators

Electrical System

8HK1-UP

2ZL1-UP

3ML1-UP

9FL1-UP

2

1

3 4

5

6 7

8

9

3

4 5

6

8

9

1

2

7

A AA

1

2

325-PK-14

200-BK-14

T

This indicates that the component does not have a wire connected to ground. It is

grounded by being fastened to the machine.

This indicates that the component has a wire connected to it that is connected to ground.

105-9344

T

Normally open switch that will close with an increase of a specific condition (temp-press-etc.).

The circle indicates that the component has screw terminals and a wire can be disconnected from it.

Pin Socket Fuse

Component

Part Number

Pin or SocketNumber

Receptacle

Plug

Wire Gauge

Wire, Cable, or Harness

Assembly IdentificationWire Color

Normally closed switch that will open with an increase of a specific condition.No circle indicates that the wire cannot be disconnected from the component.

Single WireConnector

Circuit NumberIdentification

GroundConnection

Pressure

SymbolTemperature

Symbol

Level

Symbol

Flow

Symbol

Circuit BreakerSymbol

Reed Switch - A switch whose contacts are controlled by a magnet. A magnet closes the

contacts of a normally open reed switch; it opens the contacts of a normally closed reed switch.

Sender- A component that is used with a temperature or pressure gauge. The sender

measures the temperature or pressure. Its resistance changes to give an indication to

the gauge of the temperature or pressure.

Relay (Magnetic Switch) - A relay is an electrical component that is activated by electricity.

It has a coil that makes an electromagnet when current flows through it. The

electromagnet can open or close the switch part of the relay.

Solenoid - A solenoid is an electrical component that is activated by electricity. It has a

coil that makes an electromagnet when current flows through it. The electromagnet

can open or close a valve or move a piece of metal that can do work.

Harness And Wire Symbols

Electrical Schematic Symbols And Definitions

1 1

2 2

Typical representation of a Sure-Seal

connector. The plug and receptacle

contain both pins and sockets.

Typical representation of a Deutsch

connector. The plug contains all

sockets and the receptacle contains

all pins.

T

Normally open switch that will close with an increase of a specific condition (temp-press-etc.).

Normally open switch that is closed due to an applied condition, and will open again with a

specific decrease in that condition.

Normally closed switch that will open with an increase of a specific condition.

Normally closed switch that is open due to an applied condition, and will close again

with a specific decrease in that condition.

The circle indicates that the component has screw terminals and a wire can be disconnected

from it.

No circle indicates that the wire cannot be disconnected from the component.

This indicates that the component has a wire connected to it that is connected to ground.

This indicates that the component does not have a wire connected to ground. It is grounded

by being fastened to the machine.

Electrical Schematic Symbols And Definitions

PressureSymbol

TemperatureSymbol

LevelSymbol

FlowSymbol

Component LocationMachineLocation Component

SchematicLocation

MachineLocation Component

SchematicLocation

1 Actuator - Governor E-10 19 Sensor - Engine Speed D-12

1A Alarm - Action E-2 20 Sensor - Fuel Level F-10

2 Alarm - Travel F-12 21 Sensor - Hydraulic Oil Temperature A-11

3 Alternator E-11 22 Solenoid - Air Conditioner Compress Clutch E-12

4 Antenna D-8, 9 1E Solenoid - Bypass 1 D-10

5 Battery A-2, 3, F-11 2E Solenoid - Bypass 2 D-10

1D Block - Terminal B-4 23 Solenoid - Engine Stop B-12

2D Breaker B-4 3E Solenoid - Hammer Controller E-10

6 Controller B-8 4E Solenoid - Heavy Lift 1 C-9

7 Converter D-9 5E Solenoid - Heavy Lift 2 C-9

1B Dial - Engine Speed E-3 24 Solenoid - Heavy Lift 3 F-2

3D Fuse - Block B-5, 6 25 Solenoid - Start Aid F-12

8 Horn F-1 6E Solenoid - Swing Power C-9

9 Lamp - Boom C-1 26 Solenoid - Travel Speed A-10

10 Lamp - Cab D-1 27 Speaker D-8

11 Lamp - Chassis B-2, F-1 28 Switch - Air Conditioner Refrigerant Press E-12

5A Lamp - Dome D-4 29 Switch - Disconnect A-3

2A Lighter - Cigar E-2 30 Switch - Engine Oil Press D-12

3A Meter - Service E-3 2B Switch - Governor Backup E-5

4A Monitor E-2 7B Switch - Hammer Controller E-4

12 Motor - Starter B-12 5C Switch - Heavy Lift F-4

13 Motor - Washer F-10 3C Switch - Horn F-3

5A Motors - Wiper D-2 7E Switch - Implement Press D-10

14 Pump - Grease B-2 3B Switch - Low Idle E-3

15 Pump - Refueling F-12 24 Switch - Neutral Start F-2

16 Radio D-8 2C Switch - Pump Backup F-5

4D Relay - Boom Lamp A-6 31 Switch - Refueling F-10

4D Relay - Cab Lamp A-6 32 Switch - Refueling Pump F-12

4D Relay - Chassis Lamp A-6 4C Switch - Seat Heater F-4

4D Relay - Horn B-5 4B Switch - Speed Change E-5

5D Relay - Main C-4 5B Switch - Starter D-4

4D Relay - Refueling Pump A-5 6B Switch - Start Aid E-3

60 Relay - Start B-4 33 Switch - Start Aid Coolant Temperature E-12

4D Relay - Washer B-6 8E Switch - Swing Press C-9

4D Relay - Wiper B-6 9E Switch - Travel Press D-10

1C Resistor - Backup F-5 6A Switch - Windshield D-2

17 Seat - Heater F-4 34 Unit - Air Conditioner E-7

18 Sensor - Engine Coolant Temperature E-12 35 Valve - Proportional Reducing A-10

A = Connector in cab.

B = Connector in operators R.H. console.

C = Connector in operators L.H. console.

D = Connector in relay panel.

E = Connector near main control valve.

ConnectorsMachine

Location

Harness And/Or

Components

Schematic

Location ConnectorsMachine

Location

Harness And/Or

Components

Schematic

Location

CONN3A-6C-9255

B-6C-9256F-9 CONN5

A-6C-9255

Heavy Lift 2 SolenoidC-9

CONN1

*

A-6C-9255

ControllerA-8 CONN43

A-6C-9255

Implement Press SwitchD-10

CONN50A-6C-9255

D-105-9922B-3 CONN45

A-6C-9255

Proportional Reducing ValveA-10

24 ContactsCONN2

*

A-6C-9255

ControllerB-8 CONN68

A-6C-9255

Refueling PumpF-12

CONN4A-6C-9255

B-6C-9256E-9 CONN67

A-6C-9255

Refueling Pump SwitchF-12

CONN33A-6C-9255

C-6C-8632C-12 CONN66

A-6C-9255

Refueling SwitchF-10

CONN12B-6C-9256

G-7Y-8283E-4 CONN26

A-6C-9255

Start Aid SolenoidF-12

CONN15B-6C-9256

K-6C-9031D-5 CONN40

A-6C-9255

Swing Power SolenoidC-9

CONN7B-6C-9256

N-102-7915F-6 CONN39

A-6C-9255

Swing Press SwitchC-9

CONN8B-6C-9256

W-102-7939E-6 CONN47

A-6C-9255

Travel AlarmF-12

CONN37A-6C-9255

Governor ActuatorE-10 CONN42

A-6C-9255

Travel Press SwitchD-10

CONN6B-6C-9256

Heater/Air Cond UnitD-7 CONN44

A-6C-9255

Travel Speed SolenoidA-10

CONN18G-7Y-8283

Engine Speed DialE-3 CONN13

B-6C-9256

G-7Y-8283E-4

CONN32A-6C-9255

C-6C-8632C-12 CONN24

B-6C-9256

H-7Y-8290 (Z-7Y-5504)F-2

CONN49A-6C-9255

S-102-7878A-7 CONN51

B-6C-9256

Heavy Lift 3 SolenoidF-2

CONN14B-6C-9256

E-6C-9030D-6 CONN10

B-6C-9256

J-7Y-8285F-3

CONN16B-6C-9256

K-6C-9031D-5 CONN27

C-6C-8632

A/C Clutch SolenoidE-12

CONN70E-6C9030

R-6C-9177D-2 CONN28

C-6C-8632

A/C Refrigerate SwitchE-12

CONN23E-6C-9030

RadioD-8 CONN3

C-6C-8632

Engine Speed SensorD-12

CONN20K-6C-9031

MonitorE-2 CONN35

C-6C-8632

Start Aid Coolant Temp SwE-12

CONN21K-6C-9031

Wiper Motor (Top)D-2 CONN72

E-6C-9030

K-6C-9031D-3

CONN25E-6C-9030

T-6C-8839D-2 CONN73

E-6C-9030

Not UsedD-6

CONN71R-6C-9177

Wiper Motor (Bottom)D-2 CONN52

F-7Y-3983

L-7Y-3978 (P-7Y-3984)C-2

CONN48A-6C-9255

F-7Y-3983 (P-7Y-3984)C-7 CONN17

G-7Y-8283

Start Aid SwitchE-3

CONN29C-6C-8632

Engine Coolant Temp SensorE-12 CONN60

K-6C-9031

Action AlarmE-2

CONN31C-6C-8632

Engine Oil Press SwitchD-12 CONN62

N-102-7915

Heavy Lift SwitchF-4

CONN41A-6C-9255

Bypass 1 SolenoidD-10 CONN64

N-102-7915

Seat HeaterF-4

CONN46A-6C-9255

Bypass 2 SolenoidD-10 CONN63

N-102-7915

Seat Heater SwitchF-4

CONN38A-6C-9255

Fuel Level SensorF-10 CONN11

W-102-7915

Hammer Controller SwE-4

CONN53A-6C-9255

Grease PumpB-2 CONN34

A-6C-9255

C-6C-8632C-12

CONN36A-6C-9255

Hammer Controller SolenoidE-10 CONN58

G-7Y-8283

Low Idle SwitchE-3

CONN69A-6C-9255

Heavy Lift 1 SolenoidC-9 CONN59

J-7Y-8285

Horn SwitchF-3

HARNESS CONNECTOR LOCATION CHART

2 Contacts

(Contd.)

1 Contact

2 Contacts

3 Contacts

4 Contacts

5 Contacts

10 Contacts

40 Contacts

Resistor, Sender and Solenoid SpecificationsComponent Description Part No. Resistance (Ohms)

102-8017 52.0 2.6

8T-8813 14.4 0.6

7T-9746 33.6

3E-7985Start; 1.55 0.16

Stop; 10.30 1.03

9G-4365 6.0

At room temperature unless otherwise noted.

Solenoid - Start Aid

Resistor - Backup

Solenoid - A/C Clutch

Solenoid - Bypass

Solenoid - Engine Shutdown

Off Machine Switch SpecificationPart No. Function Actuate Deactuate Contact Position

4I-5387 Travel/Swing/Implement Pressure490 49 kPa MAX

(71.0 7.1 psi MAX)

290.0 kPa MIN

(71.0 psi MIN)Normally Open

8T-8638 A/C Refrigerate50.0 2.8C

(122.0 5.0F)

43.3C MIN

(110.0F MIN)Normally Open

9X-4276 Engine Oil Pressure93.0 21.0 kPa

(13.5 3.0 psi)

69.0 21.0 kPa

(10.0 3.0 psi)

1-2, Normally Open

1-3, Normally Closed

9X-9970 Engine Coolant Temp (St Aid)38.0 3.0C

(100.0 5.4F)

26.0C MIN

(78.8F MIN)Normally Closed

MACHINE HARNESS CONNECTOR AND COMPONENT LOCATIONS

2

1

3

4

5

6

7

8

10

9

11

3

4

5

6

1

2

2

3

4

1

3

4 5

61

2

7

2

3

4

5

6

7

3

4 5

1

2

34

5

6

1 1 1

2

2

AREA C

AREA D

AREA B

AREA A

A

2

1

34

3

45

8

9

10

33

11

12

13

14

15

15

16

3

4

5

6

8

9

9

9

10

11 11

12

1415

13

16

B

C

D

E

12

17

18

19 20

21

22

23

24

25

26

27

282930

31

32 35

33

34

36

7

28

20 21

22

23

24

26

27

1825

29 30

31

32

35

A

2

1

3

5 496

78

1011

12

18

27

33

14 15

13 34

16

3

4

5

6

8

8

10

10

11

11

12

14

15

13

16

B

C

D

E

1

2

17

18

19

20

21

22

23

2425

26

27

28

29

30

31

32

35

33

34

367

17

19

20 21

2223

2426

28

25

29 30

31

32

19

7

AREA E

SENR6037

20Page,Color

F

E

D

C

B

A

12 11 10

12 11 10

9 8 7

9 8 7

6 5 4

6 5 4

3 2 1

F

E

D

3 2 1

C

B

A

12

B749-GN

B737-GN

21

12

BK-18

2

WHYLBKRD

1

12

12

21

21

142-BUB783-OR

A771-PU200-BK

12

265-BK

BK

235-BK

RD

201-BK

763-BU

21

2

B737-GNB749-GN

491-PK

201-BK

A769-GY

1

A768-BU

410-WH113-OR

B783-OR

A771-PU

BK-18

ATCHCAB LAMP5I-8250

WINDSHIELDSW9G-2795

A769-GY

ATCHCAB LAMP5I-8250

BOOM LAMP5I-8250

ATCHBOOM LAMP5I-8250

1

432

B730-OR

235-BKB731-WH

A768-BU

124-GN-14

521-YL

ATCHETHERSTART SW7X-6387

DISCONNECTSW7N-0719

12

103-YL

615-YL

12

MOTOR

12

MOTOR

L

H

1432

ANTENNA7Y-5435

ATCH GREASE PUMP4I-8476

ATCHCAB LAMP(HEAD GUARD)5I-8252

ATCHCAB LAMP(HEAD GUARD)5I-8252OPERATOR STATION

OPERATOR STATION OPERATOR STATION

OPERATOR STATION

21

SERVICEMETER6T-7337

+BATTERY

DATA +DATA -

GROUND

WIPER

6C-9102

CIGARLIGHTER9W-0335

ACTION ALARM3E-6328

105-BR307-OR

DOME LAMP8C-9678

KEY START SW9G-7641

GROUND

HORN SW6I-5088

NEUTRALSTART SW9W-2150

CHASSISLAMP5I-8250

R

CSB

OFFONST

POSNEGPOSNEG BATTERY9G-4247

150-OR

150-OR

L31

B749-GN

B737-GN

200-BK

D777-PU

150-ORD777-PU

307-ORD777-PUD777-PU

150-OR

150-OR

200-BK

SS

SS

L14

L9

L13

L17

L15

L16

L12

L10

L9

A768-BUA769-GY

763-BU172-GN

D777-PU150-OR

L11

L12

L31

C

L10

L10

L9

L14

L12200-BK

124-GN

200-BK124-GN

BKRD

124-GN

200-BK

ATCHSEATHEATER100-7729

ATCHSEATHEATER SW7X-6386

A537-PK

A537-PK21

21

172-GN

A754-GY

B733-YL

113-OR

A761-PU

405-GY

522-WH-14

325-PK

506-PU

34

12

495-GN

201-BK788-YL

A762-PU

311-WH

492-GY

113-OR403-GN

200-BK

326-PU

A754-GYB733-YL

D777-PU

A754-GYB733-YL

WH-18BK-18

JJBBGG

325-PK

ATCHREFUELING SW5C-6108

B733-YL172-GN

172-GN

BYPASS 1SOL7T-9746

A

A754-GY

BYPASS 2SOL7T-9746

ENGSPEED SENSOR3E-7886

BK-00

RD-00

RD-00

109-OR-4

BK-00

RD-00

200-BK-14323-WH-14

325-PK365-YL

ATCHREFUELINGPUMP102-6168

113-OR492-GY201-BK

CHASSIS

200-BK201-BK

201-BK200-BK

200-BK

326-PU

CHASSIS

B955-YL

RADIO

21

21

FUELLEVELSENSOR7Y-3848

BKYL

A768-BU

492-GY

403-GN

A761-PUA762-PU788-YL

113-OR

4321

B

495-GN

491-PK

BKRD

101-RD-4

BK

W

E

121-YL

D

615-YL-14

A

113-OR

120-YL124-GN-14

103-YL129-BU147-PU

501-GN500-BR

506-PU

105-BR320-OR322-GY306-GN

304-WH-8

308-YL

109-OR-4

403-GN522-WH-14

113-OR

120-YL124-GN-14103-YL129-BU147-PU

501-GN500-BR

310-PU

105-BR320-OR322-GY306-GN308-YL

A769-GY

B789-BR-14B739-WH-14B790-OR-14B740-OR-14

B731-WHB730-OR

A758-BRA757-GYA756-BUA755-PK

615-YL-14

2

607-PK-14

B956-PK

410-WH

535-BU118-GY

B786-BU

1

43 2 1

A762-PU

788-YL

PP

ATCH HYDHAMMERCONT SW7X-6386

405-GY

150-OR

MOTOR

WASHERMOTOR7T-8890

109-OR-4

308-YL

101-RD-4304-WH-8109-OR-4

788-YLA762-PU

405-GY113-OR

109-OR-8

403-GN

109-OR-4

492-GY

535-BU118-GY

607-PK-14

D-7F-27Y-5504A

A

D

BKRD

Z (NOTE C)

L20

2

D777-PU

118-GY535-BU

410-WH

B956-PK

607-PK-14

1

ATCHREFUELINGPUMP SW7Y-8263

615-YL-14

A755-PK

113-OR

A756-BUA757-GYA758-BR

321-BR

B730-OR

A761-PU

B731-WH

142-BU

B740-OR-14

405-GY

B790-OR-14

491-PK

B739-WH-14B789-BR-14

308-YL306-GN322-GY320-OR

NOTE C : USE WITH CAB RISER

105-BR

500-BR501-GN

147-PU129-BU103-YL124-GN-14120-YL

113-OR

615-YL-14200-BK-14

A

B786-BU

410-WH

B956-PK

A755-PKA756-BUA757-GYA758-BR

B730-ORB731-WH

B740-OR-14B790-OR-14B739-WH-14B789-BR-14

B955-YL

B738-BR

B955-YL

201-BK

ATCHHEAVYLIFT 2SOL6I-6826

150-OR

D776-WH

ENGSHUTDOWNSOL3E-7985

A

ALTGROUND

G S

MTR BAT

MOTOR

SIGNALBKYLOR

STARTER4N-3181

D776-WHBYPASS 2 SOL

633-BU-14

200-BK-4

109-OR-4

616-BU-14

403-GN

113-OR

A

492-GY

C

201-BK

B R+

COLD WEATHER

Z

200-BK-4

101-RD-4

200-BK-10

304-W

H-8

21

D776-WH

4

6

323-WH-14

ATCHHAMMERCONT SOL7Y-5005

RR

21

SWINGPRESS. SW4I-5387

SWINGPOWER SOL6I-6826

403-GN

320-OR322-GY

109-OR-4

140-BU

101-RD-4

121-YL

172-GN

786-GN

607-PK-14

A983-BU

A762-PU

304-W

H-8

792-OR

325-PK

535-BU

506-PU

616-BU-14

791-PK

501-GN

150-OR

633-BU-14

150-OR

513-OR-14

365-YL

521-YL-14

B786-BU

118-GY

HARNESS AS.

200-BK

311-WH

LOCPART NO.

129-BU142-BU

500-BR

200-BK

113-OR150-OR

105-BR

124-GN-14

365-YL

521-YL-14

147-PU120-YL

103-YL184-BU-14

615-YL-14

112-PU-12

IDENT

CIRCUIT GROUPINGDESIGNATION

586-BR

323-WH-14

ATCHHEAVYLIFT 1SOL4I-6158

#L

ATCH WIRE, CABLE,COMPONENT

CIRCUIT NOT CONNECTED

CIRCUIT CONNECTED

112-PU-12

BLUEGREEN

112-PU-14

112-PU-14112-PU-14

101-RD-14

BUGN

RDWHORYLPKBK

BLADE, SPADE, RING,OR SCREW TERMINAL

INTERNAL ELECTRICALCONNECTION TO SURFACEOF COMPONENT

ELECTRICAL CONNECTIONTO VEHICLE STRUCTURE

CONNECTOR

SYMBOL DESCRIPTION

BROWNPURPLEGRAYBLACK

COLORABBREV

PINKYELLOWORANGEWHITERED

BRPUGY

A 6C-9255B 6C-9256C

132

6C-8632

B738-BR

D 105-9922

5

513-OR-14

E

2 3

6C-9030F

HEATER UNIT

7Y-3983

103-YL615-YL-14120-YL

147-PU

522-WH-14521-YL-14

124-GN-14

320-OR

G 7Y-8283H

322-GY

113-OR

306-GN

129-BU

607-PK-14

501-GN535-BU500-BR118-GY

A763-GY-14B751-YL-14B789-BR-14B739-WH-14B790-OR-14B740-OR-14

A769-GY

B731-WHB730-ORA768-BU

7Y-8290

308-YL

403-GN

410-WH

B956-PKB955-YL

310-PUB786-BU105-BR

326-PU

A758-BR

A757-GY

A756-BUA755-PK

J 7Y-8285K

103-YL

615-YL-14

120-YL

147-PU

522-WH-14521-YL-14

124-GN-14

320-OR

6C-9031L 7Y-3978

322-GY

113-OR

306-GN

129-BU

607-PK-14

501-GN535-BU500-BR118-GY

A763-GY-14B751-YL-14B789-BR-14B739-WH-14B790-OR-14B740-OR-14

A769-GY

B731-WH

B730-ORA768-BU

M

308-YL

403-GN

410-WH

B956-PKB955-YL

310-PUB786-BU105-BR

326-PU

A758-BR

N

ATCHA/C COMPRCLUTCH SOL8T-8813

102-7915P 7Y-3984RST 6C-8839U

PLATFORM

V102-7939

306-GN

201-BK

410-WH

B955-YLB956-PK113-OR

102-7878

501-GN

535-BU

A-7

CABLE AS.

201-BK201-BK

AA 7Y-5545 A-2BB

200-BK-14

A-3CC

124-GN-14521-YL-14

120-YL

200-BK

129-BU

201-BK

B786-BU

7Y-5547

403-GN

A-3DD

10

A-3

200-BK

492-GY788-YL

101-RD-4

EE 7Y-5548FF 7Y-8299GG

616-BU-14633-BU-14

7Y-3975

308-YL

D776-WH

JJ

121-YL

7Y-3976

615-YL-14

184-BU-14

THIS SCHEMATIC IS FOR THE 350 EXCAVATOR.

COMPONENTS ARE SHOWN INSTALLED ON A FULLYOPERABLE MACHINE WITH THE KEY AND ENGINE OFF.

792-ORA983-BU786-GN791-PK

UNLESS OTHERWISE SPECIFIED ALL WIRE IS 16 GAGE.

B-4

185-YL-14120-YL124-GN-14

103-YL129-BU150-OR

C-4B-4F-11

B738-BR586-BR

CHASSISBOOM

501-GN500-BR

506-PU

172-GN

10A

140-BU

185-YL-14

115-PK-14

15A

149-PU-14

112-PU-14

142-BU

105-BR

112-PU-14

10A10A

786-GN

115-PK-14

791-PK

615-YL-14

616-BU-14

115-PK-14

149-PU-14

786-GN

786-GN

149-PU-14

633-BU-14791-PK

115-PK-14

1931

F-11F-9A-12

7Y-55037Y-5502

607-PK-14

1

B789-BR

B738-BR235-BK

586-BR147-PU

BOOMLAMPRELAY7Y-5490

A

TRAVELSPEEDSOL7I-1245

RD

PROPORTIONALREDUCING

5I-8368

267-BK266-BK265-BK264-BK

16

9

244115

28

2210

235-BK-14

14318236122115

207

19171

200-BK

7Y-5501

7Y-8297

7Y-5546

MMLLKK

D-2

D-3E-6D-2

D-8

C-7

3121

11

23

26

410-WH2730207

B956-PK

A755-PK

40

A756-BU

36

A757-GY

1969829393837

28

13

10

A758-BR

1516

14

ATCHHEAVY LIFTSW7X-6386

586-BR

B738-BR

24

A

A

A

A

253512

B730-OR

1

B731-WH

500-BR

223233342

B740-OR-14

13

B790-OR-14

ONE TOUCHLOW IDLE SW6I-5088

5

B739-WH-14B789-BR-14

F-6

PREHEATRS232 RXDRS232 TXD

792-OR

HEAVY LIFT 1,2 SOL

B955-YL

501-GN

OPERATOR STATION

B790-OR

A757-GY

A756-BUA755-PK

GOV ACT BU SW +

307-OR

12

B751-YL-14A763-GY-14B789-BR-14B739-WH-14B790-OR-14B740-OR-14

B790-OR

147-PU

6

4

A

A

A

113-OR

D-2C-2D-5F-3F-2E-4

MONITOR102-7891

5

323-WH-14

301-BU-10

C-7

200-BK-10

326-PU

201-BK

D-6

21

GOV ACT BU SW -

FUSE10A 9W-144215A 9W-144120A 9W-1446

B-3C-12

323-WH-14365-YL

506-PU

365-YL

A983-BU

F-8

535-BU

506-PU

4

B737-GN

17

B738-BR

6C-9177

365-YL

NOTE A : USE WITH SHORT BOOM

168-GN-14

405-GY

A771-PU763-BU

F-9

W

B957-GN

113-OR

235-BK

405-GY403-GN

492-GY

235-BK

200-BK

RELAYBOX

320-OR

495-GN

BKBK

OPTION VALVE -

201-BK

403-GN

OPTION VALVE +

A

BB AA

OPTION SENSOR

WIPERRELAY7Y-5490

WASHERRELAY7Y-5490

DD

CC

10

500-BR

EE

GG

AA

A

A

9

168-GN-14

BK

168-GN-14 REFUELING

BR

320-OR

B956-PK

10A

322-GY

D777-PU

308-YL326-PU

105-BR

HORNRELAY7Y-5490

320-OR322-GY

114-GN

FUSE & RELAY PANEL

B786-BU

310-PU

535-BU

607-PK-14306-GN

RELAY BOX

235-BKB786-BU

105-BR310-PU

FUSE&RELAYPANEL

FUSE & RELAY PANEL

326-PU308-YL

A758-BRA757-GYA756-BUA755-PK

ALTERNATOR5S-9088

ATCHALTERNATOR3E-7577(HIGH CAPACITY)

322-GY

10A

10A

LOW IDLE SW B786-BU

GOV ACT +EP SOL -

10A

EP SOL +

ACCEL SW TERM S1ACCEL SW TERM S2

118-GY

ACCEL SW TERM S3

RELAY BOX

ACCEL SW TERM S4

DATA -GOV ACT -

DATA +FAULT ALARM

KEY SW ON 308-YL

15A

L17

L6

10A

15A

10A10A

L4

L5

OPTION SW 2

ATCHREFUELINGPUMPRELAY7Y-5490

616-BU-14

A755-PK

BA

L10

A756-BUA757-GYA758-BR

L14

B738-BR

L12

L6

L13

5

L3

L16

4

C

BK

C

C

C

C

112-PU-14

149-PU-14

A

A

A

149-PU-14

F

B

112-PU-14184-BU-14

142-BU

140-BU103-YL

120-YL

J

121-YL

N

B

HEAVY LIFTHEATER

N

A768-BU

W

B

E

JJ

KK

LL

A768-BU

GB

B

B B

310-PU

COOLANT LEVEL SW

B

GN

C

201-BK

L15

H H

H

K

K

K

K K

K

GROUND

L2

L1

L11

235-BK

L18

586-BR

L20

L19

E T

235-BKB738-BR

N

BK-00

F

FP

L28

12

3

L

L27

L

P (NOTE A)

D A

L26

IMPLEMENT

PRESS. SW4I-5387

4

5

20A10A

129-BU

112-PU-12

113-OR

112-PU-12

101-RD-14

RADIO

SWING

121-YL

MONITOR

120-YL

20A

OPTION RELAY 1

129-BU

G

172-GN306-GN

304-WH-8

308-YL

109-OR-4

OPTION RELAY 2

S4

CHASSIS LAMP RELAY

142-BU

113-OR

BOOM LAMP RELAY

WORK/TR

WASHER RELAYWIPER RELAY 792-OR

A983-BU

CIGAR

CHASSISLAMPRELAY7Y-5490

A

ATCHBOOMLAMPRELAY7Y-5490

791-PK

321-BR

ATCHCABLAMPRELAY7Y-5490

121-YL

B783-OR

506-PU

535-BU

786-GN

405-GY

311-WH

791-PK

S3

B955-YL

D776-WH

2

G

9

FRONT LINK PR SW

ATCH PR SW

B749-GN

201-BK

HAMMER

HARN CODE 1

200-BK

GREASE

150-OR124-GN-14

KEY

10A10A

8

311-W

H

112-PU-14

112-PU-14112-PU-14

521-YL-14

109-OR-4

109-OR-8

2

L10

1

101-RD-14

L24

L9

522-W

H-14

101-RD-14

200-BK

308-YL

304-WH-8

200-BK

321-BR

306-GN

112-PU-12

ALTBREAKER9S-4693

L25

112-PU-12

101-RD-4

BACKUP

172-GN

147-PU112-PU-14101-RD-14118-GY

105-BR

506-PU

535-BUA983-BU

501-GN792-OR500-BR

3

SWING POWER SOL

WORK MODE 1 SOL

TRAVEL PR SWSWG BRK PR SW

HARN CODE 2

SPEEDCHANGESW7N-8008

HARN CODE 3HARN CODE 4

BACKUPGOVERNORSW3T-4405

BU

STARTRELAY9X-8124

495-GN

B

K

MAIN RELAY3T-0376

101-RD-14

TRAVELPRESS. SW4I-5387

80

PK

10A

ATCHBATTERY9G-4247

NEGPOSNEGPOS

2

L24

L23

B783-OR

BK

535-BU114-GN

118-GY

607-PK-14

184-BU-14

BK-18

HORN

114-GN

CONTROL

103-YL

TR ALARM

DOME LAMP

633-BU-14

WIPER

615-YL-14

200-BK

B749-GN

L13

Y 6C-9005

321-BR

F-8

615-YL

ENG OILPRESS. SW9X-4276

103-YL

ATCHCOOLANTTEMPETHER SW9X-9970

ATCH A/CREFRIGERANTPRESS. SW8T-8639

1

120-YL

586-BR

D777-PUHEAVY LIFT 3 SOL

A763-GY-14B751-YL-14

K

B

YL

121-YL

G

G

BU

PUBK

543

CHASSIS

HH

L18

172-GN

142-BU

109-OR-4

RD-18

2

172-GN

304-WH-8

D-9

101-RD-4

113-OR

START

RESISTOR102-8017

L22

HH

121-YL321-BR

150-OR

GND

ATCHETHERSOL9G-4365

HYD OILTEMPSENDER4I-5394

NN (NOTE C)

Y (NOTE C)

L19

607-PK-14140-BU

+BATTERY

+B

403-GN

109-OR-4

C

T

A758-BR

200-BK-4

A

306-GN

307-OR

D

185-YL-14

185-YL-14

113-OR

185-YL-14

S2S1

185-YL-14

COM

185-YL-14

1

2

3

1

185-YL-14

185-YL-14

6

5

4312

5

21

522-WH-14

SIGGND

OR

7

6

8

A762-PU

4

L532

1

521-YL-14

CHASSIS

BACK UP SW B

40393837363534333231302928272625242322212019181716151413121110987654321

L21

BU-18

788-YL

24V+

P

16

105

N

98

32

N

67

E

B

5

A

X

A

616-BU-14

147-PU

M

L4

L3

21

A

521-YL-14

W

710

D

76

786-GN

791-PK

320-OR

200-BK

607-PK-14

W

T

89

CHASSIS

CHASSIS

4

18

A769-GY

A768-BU

B731-WH

B730-OR

WW

E-10

FF

BLOCK AS.9G-8451

A

4

5I-8358

3

2

200-BK

522-WH-14

501-GN

A

235-BK

CHASSIS

1

BK-00

311-WH

X

326-PU

491-PK495-GN

RD-00

B738-BR

113-OR

HH

235-BK

SIG

172-GN

F-8

ENG

PUMP

CONTROLLER

102-8025

4 3

10

L8

L8

BK-00

A757-GYA756-BU

2

WIRE AS.

21

A755-PK

200-BK

235-BK

118-GY

7Y-8299

1

A

ENGGOVERNORACTUATOR7Y-3991

NN

150-OR

B

L7

L27

L26

G

J

150-OR

J

B

410-W

H

12

L1

113-OR

1

L29

129-BU

L2

RD-00

235-BK-14

L1

185-YL-14

B956-PK

L5

2

2

201-BK

403-GN

L2

L4

363526251615

65

3938

37343332302928

L3

27

L30

L29

L21

34

242322212018171413121110987432

1

D776-WH

D

L28

L7

N

N

40

COOLANTTEMPSENSOR3E-5370

5

A

150-OR

101 3

201-BK

4 2 6

615-YL-14

98

200-BK-14

7

9

235-BK

200-BK

103-YL

1

200-BK

235-BK

8

200-BK

235-BK

7

235-BK-14

6

-

A761-PU

147-PU

306-GN200-BK

B955-YL

A763-GY-14

B789-BR-14

RD-00

TRAVEL SPD SOL 763-BUA771-PUB737-GN

STOP

BK-00

5

103-YL

H

RD-00

RD-00

322-GY

BK-00

B751-YL-14

A762-PU

308-YL

586-BR

788-YL

311-WH310-PU

C

500-BR

320-OR322-GY

140-BU

121-YL

172-GN

786-GN

607-PK-14

A983-BU

201-BK

792-OR

535-BU

506-PU

616-BU-14

791-PK

501-GN

633-BU-14

118-GY

129-BU

B751-YL-14

185-YL-14142-BU

500-BR

535-BU

113-OR

235-BK

B739-W

H-14

B790-OR-14

103-YL

501-GN

150-OR

105-BR

124-GN-14

120-YL

103-YL

A763-GY-14

308-YL

200-BK-14

BK-00

184-BU-14

615-YL-14

308-YL

109-OR-4101-RD-4304-WH-8

615-YL-14

184-BU-14

200-BK

A770-PK

185-YL-14

CHASSIS

BK-00

GND

BYPASS 1 SOL

S

A768-BU

MM

D

200-BK

120-YL

L32

L32

200-BK129-BU

403-GN

D A

118-GY

A

615-YL-14200-BK-14

118-GY

L22

A

607-PK-14322-GY

607-PK-14200-BK-14

200-BK322-GY

322-GY200-BK

BK-00

200-BK140-BU

200-BK-14607-PK-14

322-GY

633-BU-14

200-BK-14616-BU-14

200-BK-14

607-PK-14

200-BK-14

10A

B740-OR-14

322-GY

HORN7T-0970

HORN7T-0969

506-PU

A

185-YL-14

172-GN

G

CHASSISLAMP5I-8250

5V+

RR

RR

185-YL-14

200-BK-14

GOV POSITIONENGINE SPEED -ENGINE SPEED +ENGINE COOL TEMP

200-BK-14

L30

ENGINE OIL PR

ENGINE

SPEEDDIAL

7Y-5465

21

G

L25

A

L23

BK-00

307-OR

ALTERNATOR

3

410-WH

235-BK

185-YL-14

A763-GY-14

200-BK-14

TRAVELALARM

495-GN

HYD OIL TEMP

HYD OIL LEVEL SW

3

D777-PU

325-PK

2

TRAVELALARM3T-1444

1

FUEL LEVEL

306-GN

+

A754-GY

101-RD-14

B751-YL-14

1

113-ORB956-PKB955-YL201-BK200-BK129-BU201-BK

OPERATOR STATION

403-GN

607-PK-14

HEAVY LIFT SW

101-RD-14

200-BK

BK-00

K

BACKUPPS VALVESW3T-4405

C

320-OR

ATCHHEAVYLIFT 3SOL102-0725

200-BK

ENG OIL LEVEL SW

326-PU

RELAYBOX

150-OR

D776-WH

200-BK-14

FF

A761-PU

267-BK

A

B733-YL

3

PLATFORM

4

633-BU-14

ALL DASHED LINES ARE ATTACHMENTS.

WIRES THAT HAVE BATTERY VOLTAGEWHEN THE KEY SWITCH IS OFF.

WIRES THAT HAVE BATTERY VOLTAGEWHEN THE KEY SWITCH IS ON.

STARTING CIRCUIT.

GAUGE CIRCUIT.

WIPER/WASHER CIRCUIT.

HEATER AND AIR CONDITIONER CIRCUIT.

GROUND CIRCUIT.

ENGINE SHUTDOWN CONTROL CIRCUIT.

START AID CIRCUIT.

ENGINE/PUMP CONTROL CIRCUIT.

CONN 24

CONN 51

CONN 25

CONN 52

CONN 53

CONN 21

CONN 20

CONN 60

CONN 13

CONN 59

CONN 10

CONN 58CONN 12

CONN 11

CONN 18

CONN 17

CONN 11

CONN 19

CONN 14 CONN 16

CONN 15

CONN 64

CONN 62

CONN 50

CONN 3

CONN 4

CONN 6

CONN 23

CONN 48

CONN 49

CONN 1

CONN 2

CONN 40

CONN 5

CONN 69

CONN 39

CONN 45

CONN 44

CONN 33

CONN 34

CONN 32

CONN46

CONN43

CONN42

CONN41

CONN36

CONN37

CONN66

CONN 38

CONN 26

CONN 67

CONN 68

CONN 47

CONN 27

CONN 28

CONN 35

CONN 30

CONN 31

CONN 29

CONN 7

CONN 8

CONN 63

VALVE

BACKUP

MOTOR

L9

5 432 1

200-BK-14

4I-1275

A/C UNIT

CONN 6

4I-0470

ATCH

5 432 1

1 28103-YL/RD

200-BK

GD CAB

8103-YL/RD

615-YL-14

CONN 73

8103-YL/RD

615-YL-14 23

41

T

T

T

12 201-BK

403-GN

12

MOTOR

L

H

1432

BOTTOM WIPER6C-8438

K

CONN 71

T

1432

K

CONN 70

200-BK535-BU

501-GN

21

501-GN

535-BU

200-BK

TOP

CONN 72

K E

501-GN535-BU

K

GD CAB