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Schematic Location H-4

Component A/C Unit

Component Location Machine Location 10

Component Seat W/Seat Heater (Atch)

Schematic Location F-4

Machine Location E

Wire Number

Wire Color

A-5

5

101

RD

Wire Description Wire Number

Wire Color

Bat(+)

546

BU

Description

SENR9278-03 March 2000

Description Accessory Circuits (Continued)

Power Circuits

Alarm - Travel (Atch)

G-12

2

Sender - Hyd Oil Temp

Alternator

B-11

11

Sensor - A/C Photo

D-7

A

103

RD

Doom Lamp

547

OR

Aux Hyd - Rotate CCW

Batteries

I-11

13

Sensor - Engine Speed

B-11

20

105

RD

Key Sw

548

GY

Aux Hyd - Open

Block - Terminal

F-9

D

Sensor - Fuel Level

A-5

6

107

RD

Eng Shut

549

PK

Aux Hyd - Close

Breaker - Alternator

I-11

D

Sensor - Overload Warning Device O.W.D. A1

F-11

D

109

RD

Alt Output(+) Term.

575

YL

Wiper. Aux (Park)

Breaker - Fuel Heater

E-8

D

Sensor - Pump Discharge Press

B-8

26

111

RD

Aux Ckt

576

PK

Wiper.Aux(Low)

Breaker - Main

I-11

D

Socket - 12v

B-6

15

112

PU

Main Power Rly Output

576

BU

Washer.Aux

Breaker - Warming Windshield

D-8

D

Solenoid - A/C Clutch

C-11

27

113

OR

Opr Mon Panel VMIS B+ Switched

586

BR

Aux Hyd . Close

Cigar Lighter

C-7

A

Solenoid - AC1

I-8

39

114

RD

Warning Horn (Forward)

A587

YL

Power Window Cont To Safety Sol Relay

Control - Overload Warning Device O.W.D.

G-5

A

Solenoid - AC2

I-8

39

115

PK

Cab/Chassis Lamp

A588

GN

Safety Sol Relay To Sol

Control - Wiper

B-7

A

Solenoid - Aux Pedal On/Off

E-1

39

118

GY

Washer/Wiper

C537

GN

A/C Photo Sensor + Sig

Controller - Aux/Hyd (Atch)

H-9

33

Solenoid - Engine Shutdown

B-11

11

120

YL

Converter

C538

OR

A/C Photo Sensor. Sig

Controller - Engine/Pump

E-2

2

Solenoid - Flow Control

I-8

29

124

GN

A/C

129

BU

Cigar Lighter

607

PK

Flood Lamp - Front

Convertor

C-6

15

Solenoid - Fine Swing

E-10

28

135

BU

Aux Ckt

615

YL

Cab Flood Lamp/Rops

Diode

G-10

7

Solenoid - Hammer 2

I-6

30

139

OR

Aux Ckt

616

BU

Bucket Flood Lamp/Boom Flood Lamp

Fuse - Block

I-1,2,3

C

Solenoid - High Press A3

F-10

39

140

BU

Lubricator

633

BU

Attach Lighting Ckt

SENR3581

Ground - Cab

B-7

A

Solenoid - Hyd Lock

E-1

G

145

BU

Aux Ckt

638

WH

Rotary Beacon

Engine/Pump Control:

SENR9291

Ground - Chassis

A-3

23

Solenoid - Level Finish

A-8

33

147

PU

Flow Cont/Fine Swing Solenoid

Starting and Charging:

SENR9292

Ground - Chassis

I-12

D

Solenoid - Rl/R2

I-7

39

149

PU

Boom Lamp

763

BU

Torque Converter SW

Ground - Chassis

A-5

E

Solenoid - Start Aid (Atch)

I-12

31

150

RD

Hyd Lock SW/ Hyd Lock Sol

779

WH

Coupler Engage Sal

Ground - Platform

D-1

F

Solenoid - Swing Brake

E-10

32

151

BN

Aux Ckt

780

PU

Coupler Disengage Sal

Ground - Relay Panel

152

BU

Aux Ckt

786

GN

Eng Speed Cant. Hi Press SW

154

RD

Aux Ckt

788

YL

EngSpeed(+)

168

RD

Aux Ckt

791

PK

Eng Speed Cont. Lo Sol

172

RD

Aux Ckt

A755

PK

Throttle SW #1

176

BU

Aux Ckt

A756

BU

Throttle SW #2

176

YL

Aux Ckt

A757

GY

Throttle SW #3

177

RD

Main Brkr

A758

BR

Throttle SW #4

180

BN

Aux Ckt

A761

PU

Electronic Pump Cont Throggle Ground

185

YL

Aux Ckt

A762

PU

Electronic Pump Cant Eng Speed Ground

Related Electrical Service Manuals Title

Form Number

Alternator: 132-2156

SENR4757

Electric Starting Motor: 104-7040 Consist: 6V-5821

Solenoid - Travel Speed

A-8

33

2

Solenoid - Trenching

A-8

33

Horns

A-2

16

Switch - Air Cleaner

H-12

35

F-3,G-11

A

Switch - Backup

D-2

B

Meter - Service

C-7

A

Switch - Boom Raise Press

D-10

34

Monitor

C-7

A

Switch - Coolant Level

I-12

36

Motor - Govener Assembly

A-11

20

Switch - Disconnect

I-11

D

F-1

F

Switch - Engine Oil Level

A-11

18

Motor - Starter

A-11

20

Switch - Engine Oil Press

B-11

38

189

RD

Aux Ckt

A768

BU

Pump Control Valve #1 (+)

Motor - Upper Wiper

B-6

22

Switch - Swing Control

D-4

33

191

WH

Aux Ckt

A769

GY

Pump Control Valve #2 (-)

Motor - Washer

I-12

D

Switch - Hyd Oil Filter

A-5

E

196

BU

lnsp Lamp

A770

PK

Electronic Pump Cont Bypass SW To Resistor

Pump - Auto Lubrication (Atch)

H-12

7

Switch - Hyd Oil Level

A-5

E

198

PK

Aux Ckt

A771

PU

Float SW

Pump - Heater Fuel (Atch)

D-7

D

Switch - Implement Press

D-10

39

F771

OR

Backup SW

Pump - Refueling

A-3

D

Switch - Neutral Start Limet

H-4

C

200

BK

Main Chassis

F772

WH

Backup SW

Relay - Boom Lamp

I-10

D

Switch - Overload Warning Device O.W.D.

D-4

B

210

BK

ConverterOutput(24/12 Volt)

F773

OR

Governor Accel

Relay - Cab/Chassis Lamp

I-10

D

Switch - Panel

F-2

B

235

BK

Electronic Pump Ctrl Gnd

F774

WH

Governor Decel

Relay - Fuel Heater

E-8

D

Switch - Pressure

I-7

39

F846

PU

LED Driver 1

Relay - Horn

I-10

D

Switch - Prox

I-7

39

Relay - Hyd Lock Solenoid

I-10

D

Switch - Refrigerant Low Press

C-11

24

Relay - Main

G-10

7

Switch - Refueling (Atch)

A-5

40

Relay - Neutral Start

F-7

D

Switch - Refueling Start (Atch)

A-4

41

Relay - Refueling 1 (Atch)

A-3

23

Switch - Refueling Stop (Atch)

A-4

41

Relay - Refueling 2 (Atch)

A-3

23

Switch - Seat Heater (Atch)

D-4

B

Relay - Start

F-8

D

Switch - Start Aid (Atch)

D-5

B

Relay - Start Disable

E-8

D

Switch - Start Aid Coolant Temp (Atch)

B-11

24

Relay - Heater

F-8

D

Switch - Key

E-2

B

403

GN

D-10

39

405

B-7

A

412

Machine locations are repeated for components located close together.

GN

Starter Relay Coil

G848

GN

LED Driver 2

307

OR

Key SW To Neutral Start SW

G872

PU

Espar Cab Heater to Power Switch

308

YL

Main Power Relay Coil

952

OR

Hammer SW B

310

PU

Start Aid SW To Start Aid Sol

954

GN

HammerSWA

320

OR

Horn Relay Coil To SW

955

RU

Hammer Sol A

321

BR

Backup Alarm Lamp Travel Alarm

K904

GN

Pump Discharge - Signal

326

RD

Key SW "C" Term.

K905

RD

Pump Discharge. +B

386

PK

Air Shutoff Solenoid Enable

K906

GN

Swing Brake Sol - Signal

Monitoring Circuits

K907

RU

Swing Brake Sol - +8

Alternator (R) Term.

K909

BU

Backup SW +8

GY

Opr Mon Oil Press. (Low Setting)

K911

PK

EJP Controller - RS4BS (+)

BU

OprMon Cool Flow

K912

GN

E/P Controller - RS4BS (-)

430

BU

Opr Mon Air Filter

K915

GN

Fine Swing SW - E/P Controller

A = Located inside of cab.

487

OR

Hyd Oil Flow SW

K997

BU

+V Sensor, EMS-Il

B = Located inside of right console.

491

PK

VMIS Hyd Oil Temp Sensor

L908

OR

Controller RS-232C Tx

492

GY

VMIS Coolant Temp Sensor Signal

L909

BU

Controller RS-232C Rx

495

GN

VMIS Fuel Level Signal

L968

OR

Electronic Pump Control Ps Valve (.)

496

WH

Opr MOn Panel Hyd Oil Level

L969

WH

Electronic Pump Contral Ps Valve (+)

A424

WH

Press. Transducer 1 Signal

L970

GY

Electronic Pump Cant To SW Common Return

A425

YL

Press. Transducer 2 Signal

L971

GN

Electronic Pump Cant To Travel Pressure SW

C468

BU

Engine Oil Level

L972

BU

Low Idle SW

L973

GN

Fine Swing Cont Relay To Sol Valve

Relay - Timer

F-7

D

Switch - Travel Press

Resistor - Backup

I-11

24

Switch - Windshield

F = Located around pilot manifold. G = Located under platform. H = Located inside dash.

Accessory Circuits

E98059

12

21

F-12

D

CONN 2

F-12

D

CONN 3

G-12

D

CONN 4

G-12

D

CONN 5

H-11

D

CONN 6

G-11

D

CONN 7

G-11

D

CONN 8

A-11

1

CONN 9

F-9

D

CONN 10

I-7

29

CONN 11

I-7

29

CONN 12

A-6

E

CONN 13

C-6

21

CONN 14

G-6

F

CONN 15

G-6

F

CONN 16

G-6

F

CONN 17

H-6

F

CONN 18

H-6

F

CONN 19

H-5

F

CONN 20

G-5

F

CONN 21

F-5

B

CONN 22

F-5

B

CONN 23

F-5

B

CONN 24

F-5

B

CONN 25

C-5

24

CONN 26

C-5

F

CONN 27

C-4

F

CONN 28

C-4

F

CONN 29

A-4

23

CONN 30

A-4

7

CONN 31

A-4

7

CONN 32

F-4

B

CONN 33

F-4

B

CONN 34

F-4

B

CONN 35

H-4

C

CONN 36

H-3

C

CONN 37

H-3

C

CONN 38

H-3

C

CONN 39

H-3

C

CONN 40

H-3

C

CONN 41

A-3

7

CONN 42

B-3

9

CONN 43

B-2

9

CONN 44

H-2

C

CONN 45

H-2

C

CONN 46 SIS Connector

H-11

D

31 11

24

27 1 26 20 36 38 18 33 22

E

5

34 29

8

B

13

Washer-Front

L974

GN

Electronics Pump Ctrl Boom Raise Press SW

508

PU

Radio Speaker - Left

L975

PK

Start Aid Cont Lamp 1 Output

509

WH

Radio Speaker - Left (Commom)

L977

YL

Trenching Sol

511

BR

Radio Speaker - Right

L978

GY

Level Finish Sol

512

GN

Radio Speaker. Right (Common)

N923

GY

Backup Mode Switch 1

519

PK

Thermostat To Refrigerant Press. SW

N924

WH

Backup Mode Switch 2

524

BU

Wiper - Left (Low)

Resistor, Sender and Solenoid Specifications

Part No.

Component Description

3E-1906

Solenoid: A/C Clutch

3E-6332

Solenoid: Valve Start Aid

19

4I-5394

F

Harness And Wire Electrical Schematic Symbols

6.00 20824 - 25415 @ 0°C 6134 - 7496 @ 25°C 3989 - 4875@35°C 2224 - 2718 @ 50°C 973 - 1189 @ 75°C 475 - 522 @ 100°C 221 - 269 @ 125°C

7Y-8242

Resistor: Timer Relay

47.0 ± 4.7

8C-3663

Solenoid: Engine Shutdown Start (Latch) Coil Stop (Unlatch) Coil

1.55 ± 0.1510.3±1.03

Resistor: Backup

52.0 ± 2.6

Solenoid: Engine/Pump Control Flow Control Solenoid: Level Finish Trenching Solenoid: AC1 AC2 Hydraulic Lock Swing Brake Travel Speed

11,7 ± 1.2 32.0 ± 3.2

32.0 ± 3.2

¹ At room temperature unless otherwise noted.

36 31 24

22 18

D

3 15 21 14 2 30

11

27 38

34 39 29 E 1

20 26 33

6

40

F 12

B

Part No.

17 16 9 16

28 32

5 25

12

A 10

17

8 41

19 23 7

Function

Off Machine Switch Specification Actuate

Deactuate

Contact Position

38 ± 3° C (100 ± 5°F)

27” C Mm (80.6° F)

Normally Closed

3E-6449

Coolant Temperature (Start Aid)

3E-6455

Engine Oil Pressure

90 21 kPa (13 ± 3.0 psi)

70 ± 21 kPa (10 ± 3.0 psi)

A-B Normally Open A-C Normally Closed

106-0179

Implement Pressure Travel Pressure

1520 ± 98 kPa (224.4 ± 14.21 psi)

1127 kPa MIN (163.5 psi MIN)

Normally Open

106-0180

Boom RaisePressure

2646.00 ± 196.00 kPa (383.77 ± 28.43 psi)

2156.00 ± 196.00 kPa (312.70 ± 28.43 psi)

Normally Open

114-5333

Refrigerant Pressure (AC)

275 to 1750 kPa ¹ (40 to 255 psi)

— —

Normally Open ²

131-9203

Aux Hydraulic Pressure

3500 kPa MAX (507.6 psi)

3000 ± 150 kPa (435.1 ±21.8 psi)

A-B Normally Open A-C Normally Closed

¹ A hysteresis band exists: with increasing pressure the closed condition can be maintained up to 2800 kpa (405 psi), with decreasing pressure the closed condition can be maintained down to 170 kpa (25psi).

The connectors shown in this chart are for harness to harness connectors. Connectors that join a harness to a component are generally located at or near the component. See the Component Location Chart.

² Contact postion at the contacts of the harness connector.

Machine Harness Connector and Component Locations

AA

Real Time Error Codes Code 1301 1302 1303 1304 1305 2201 2202 2301 2302 2303 2304 3201 4101 4102 4103 4104 4105 4106 4107 4108 4109 410A 410B 4201 4202 4203 4204 4205 4206 4207 420A 420B 420C 420D 420E 4301 4302 4303 A201 A202 A203

Engine oil pressure is too low. Engine coolant temperature is too high. Hydraulic oil temperature is too high. Air filter is clogged. Battery voltage is not normal. Governor actuator feedback sensor circuit is open or shorted to battery voltage. Governor actuator feedback sensor circuit is shorted to body ground. Governor actuator feedback signal is not stable. Governor actuator feedback signal deviates. Governor actuator does not move. Calibration data error. Monitor RAM is not normal. Electric power supply to the controller is too much (43 volts). Over-current in proportional reducing valve. Proportional reducing valve circuit is open. Monitor power supply (digital output) over current. Over-current in digital output (trenching solenoid). Over-current in digital output (fine control solenoid). Over-current in digital output (travel speed change solenoid). Over-current in digital output (travel alarm). Spare solenoid 1 (digital output) over current. Over-current in digital output (swing brake solenoid). Spare solenoid 2 (digital output) over current. Engine speed is not normal. Engine coolant temperature sensor is shorted to body ground. Hydraulic oil temperature sensor is shorted to body ground. PWM sensor of pump delivery pressure is shorted to body ground. Spare PWM sensor 1 is shorted to body ground. Spare PWM sensor 2 is shorted to body ground. PWM sensor of pump delivery pressure is open in circuit. Fuel sensor is shorted to body ground Fuel sensor is open or shorted to battery voltage. Electric power supply is to low (below 23 volts). Electric power supply is to high (above 32 volts). Engine speed dial is not in one of the 10 specified positions. Data mismatch 1 between alternator and speed sensor (alternator is abnormal). Data mismatch 2 between alternator and speed sensor (speed sensor is abnormal). Engine stalls. Monitor communication is not normal. Monitor takes too much time to respond to controller's signal. Communication is abnormal in controller.

Typical representation of a Deutsch connector. The plug contains all sockets and the receptacle contains all pins.

2

Description of Problems

1 2

1 2

Receptacle

Plug

17.6 ± 0.6

Sender: Hydraulic Oil Temp

121-1491

C

Printed in U.S.A.

© 2000 Caterpillar All Rights Reserved

Resistance (Ohms)¹

23 C 7

121-1490

13

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

1

111-9916

35

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

A

102-8017

4

7JR1-UP 1XS1-UP 2AS1-UP 5MS1-UP 9WS1-UP 6LW1-UP 3YZ1-UP

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

PU

41

16

2

Normally closed switch that is open due to an applied condition, and will close again with a specific decrease in that condition.

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

506

9

40 28 15 30 D 32 25 6 10 3 4

35 39

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

17

A

14

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

320B Excavator Electrical System

306

E = Located around hydraulic oil tank.

CONN 1

Basic Machine Circuits

Flow Symbol

Level Symbol

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

Control Circuits

D

D = Located around relay panel.

Machine Location

Lighting Circuits

Ground Circuits

Temperature Symbol

Pressure Symbol

I-5

C = Located inside of left console.

Schematic Location

T

G-11

Motor - Lower Wiper

Connector Number

Electrical Schematic Symbols And Definitions

Ground - Strap Chassis/Platform Joystick - Multiswitch

Connector Location

Aux Hyd - Rotate CW

Typical representation of a Sure-Seal connector. The plugand receptacle contain both pins and sockets.

Pin or Socket Number Wire, Cable, or Harness Assembly Identification

Component Part Number

Single Wire Connector C

A

A 325-PK-14

Pin

AA 1

9X-1123 325-PK-14

Wire Color

Socket

2

200-BK-14

Circuit Number Identification

Wire Gauge

Electrical Schematic Symbols And Definitions FUSE - A component in an electrical circuit that will open the circuit if too much current flows through it. 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.

T

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. CIRCUIT BREAKER (C/B) - A component in an electrical circuit that will open the circuit if too much current flows through it. This does not destroy the circuit breaker and it can be reset to become part of the circuit again. 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. MAGNETIC LATCH SOLENOID - A magnetic latch solenoid is an electrical component that is activated by electricity and held latch by a permanent magnet. It has two coils (latch and unlatch) that make electromagnet when current flows through them. It also has an internal switch that places the latch coil circuit open at the time the coil latches.

12

11

10

9

8

7

6

5

4

3

2

1

OPERATOR STATION

B L971-GN-18 200-BK-18

200-BK-18 200-BK-18 200-BK-18 200-BK-18

200-BK-18

4 2 7 1 8 3 5 6 +12V LIGHT SPEAKER LH+ SPEAKER RHSPEAKER LHSPEAKER RH+ GROUND MEMORY +12V B+ 12V 633-BU-18 508-PU-18 512-GN-18 509-WH-18 511-BR-18 210-BK 139-OR-18 135-BU

A587-YL-18

3 5 8 6 7 4 2 1

12 11 6 4 9 8 7 2 5 3 1 10

124-GN-18 124-GN-18 124-GN-14 124-GN-14 200-BK-14 C537-GN-18 C538-OR-18 519-PK-18 113-OR-18 185-YL-18 105-RD 129-BU-18 118-GY 152-BU 152-BU 152-BU-18 152-BU-14 152-BU-14 147-PU-18 200-BK-18 K905-RD-14 103-RD 120-YL 111-RD-14 177-RD-14 177-RD-14 308-YL-18 140-BU 149-PU 115-PK-14 168-RD-14 114-RD-18 150-RD-18 151-GN-18 154-RD-18 320-OR-18 189-RD 172-RD-18 196-BU 107-RD 139-OR-18 633-BU-18 135-BU 210-BK 509-WH-18 508-PU-18 511-BR-18 512-GN-18 779-WH-18 780-PU-18 A587-YL-18 A587-YL-18 A587-YL-18 A587-YL-18 A587-YL-18 112-PU-14 112-PU-14 112-PU-14 112-PU-14 112-PU-14 112-PU-14 L22

L18

A537-PK-18 200-BK-18

576-PK-18 K909-BU-18 310-PU-18 200-BK

308-YL-18 326-RD 307-OR-18 578-BU-18 L973-GN-18 K906-GN-18 A768-BU-18 A769-GY-18 A770-PK-18 F774-WH-18 F773-OR-18 575-YL-18

1 2

1 2 3 4

1 2 3 4 5 6 7 8 9 10 11 12

1 5 10 11 961-BR-18 8630-BU-18 786-GN-18 791-PK-18

SWITCH PANEL 111-4800 K997-BU-18 A771-PU-18 L978-GY-18 L974-GN-18 L977-YL-18 788-YL-18 A762-PU-18 763-BU-18 412-BU-18 C468-BU-18 321-BR-18 405-GY-18 492-GY-18 491-PK-18 495-GN-18 430-BU-18 496-WH-18 K904-GN-18 A761-PU-18 L970-GY-18 L971-GN-18 403-GN-18 L969-WH-18 L968-OR-18 K907-BU-18 F772-WH-18 F771-OR-18

200-BK-18 200-BK-18 200-BK-18 200-BK-18

200-BK-18 200-BK-18 200-BK-18 200-BK-18

200-BK-18 200-BK-18 200-BK-18 200-BK-18

200-BK 200-BK-18 200-BK-18 200-BK-18

L12

R C OFF S ON B ST KEY SW 9G-7641

L10

L13

L12

L11

H

308-YL-18 308-YL-18 308-YL-18 308-YL-18 326-RD 307-OR-18 105-RD

L10 L13 L12 L11

L10 L13 L12 L11

L8 L9 L57

L8 L9 L57

200-BK-18 A755-PK-18 A756-PU-18 A757-WH-18 A758-BR-18

L11

1 2 3 4 5 6

A768-BU-18 ATTACHMENT HEATER FUEL PUMP 136-7707 (NOTE H)

ATCH. PANEL GP ARCTIC 160-2147 (NOTE H) ATCH HEATER GP 136-9001 (NOTE H)

AF

L969-WH-18 200-BK-18 A769-GY-18

H

L968-OR-18 H

THROTTLE POS SW 106-0107

H

H

H

H

ATCH ROTATING BEACON SW

F772-WH-18 F774-WH-18 F773-OR-18 F771-OR-18

BACKUP GOV SW 110-7884

H

H

L33

ATCH O.W.D. 132-1828

ATCH START AID SW 111-4784

ATCH SEAT HEATER SW 111-4783

ATCH SWING CONT SW 111-4788

ATCH AUX HYD CONT SW 111-4787

L4 L25 L16 L3 L19 L20

ATCH AUX SW

L4 L25 L16 L3 L19 L20

AUX BACKUP SW

ATCH AUX SW

L4 L25 L16 L3 L19 L20

L42 L41 L29 L30

C538-OR-18 C537-GN-18

487-OR-18 306-GN-18 L975-PK-18 954-GN-18 K915-GN-18 K905-RD-18 K905-RD-18 235-BK-18 235-BK-18 K911-PK-18 K912-GN-18 A755-PK-18 A756-PU-18 A757-WH-18 A758-BR-18 308-YL-18 L972-BU-18 L908-OR-18 L909-BU-18 235-BK-18

L8

H

H

H

PUMP

E

L1

H

323-WH 323-WH

L33

S1 S2 S3 S4 COM

L57 K906-GN-18

L17

L3 L40

L21

L38

L18

L17

L56 L56 L21 L40 L20 L19 L3 L38 L18 L16

A

L16

L15

I

H

G

L14

LOWER WIPER MOTOR 131-0398

1 28 16 19 11 39 32 33 14 17 5 37 23 38 7 12 8 21 24 25 22 15 36 31 26 13 30 29 35 40 2 9 6 18 34 3 4 27 20 10

OPTION SENSOR (PWM) JOYSTICK +B OUT

39 4 21 37 22 11 1 2 12 15 16 13 14 23 24 3 34 31 32 33 35 36 6 7 8 9 10 17 18 19 20 25 26 27 28 29 30 5 38 40

HYD OIL FILTER INDICATOR KEY SW START AIH INDICATOR HAMMER PRESS. SW FINE SWING SW +B +B GND GND RS485 + (MONITOR) RS485 - (MONITOR) THROTTLE DIAL S1 THROTTLE DIAL S2 THROTTLE DIAL S3 THROTTLE DIAL S4 KEY SW ON LOW IDLE SW RS232C (TX) RS232C (RX) RS232C (GND) HYD TANK INDICATOR HYD TANK PRESS. SW RS485 - (RH JOYSTICK) RS485 + (LH JOYSTICK) RS485 - (LH JOYSTICK) RS485 + (PEDAL) RS485 - (PEDAL) RS485 + (RADIO CONT) RS485 - (RADIO CONT) RS485 + (ELEC GOV) RS485 - (ELEC GOV) RS485 + (VALVE CONT) RS485 - (VALVE CONT) RS485 + (SEMI AUTO) RS485 - (SEMI AUTO)

+ MOTOR S -

F

118-YL 524-BU 200-BK

C B A A

OPTION SENSOR (PWM) SW INPUT DUAL PWR SOL MONITOR +B OUT IMPLEMENT PRESS SW TRENCHING SOL BOOM RAISE PRESS SW LEVEL FINISH SOL ENG SPEED SENSOR (+) ENG SPEED SENSOR (-) TRAVEL SPEED SOL COOLANT LEVEL SW ENG OIL LEVEL SW TRAVEL ALARM ENG OIL PRESS SW COOLANT SENSOR HYD OIL TEMP SENSOR FUEL LEVEL SENSOR AIR CLEANER SENSOR HYD OIL LEVEL SW FRONT PUMP PRESS SENSOR GOV ACTR FDBK AUX HYD PRESS SW TRAVEL PRESS SW ALTERNATOR (R TERM) EPR VALVE (+) EPR VALVE (-) SWING BRAKE SOL GOV ACTR (B) GOV ACTR (A)

A ATCH AUX CKT

2 4 1 3

200-BK-18 575-YL-18 152-BU-18 576-PK-18

1 2

A588-GN-18 200-BK-18

A

HYD LOCK SOL 121-1491

E AUX PEDAL ON/OFF SOL A 1 2

N923-GY-18 200-BK-18

200-BK-18 200-BK-18 200-BK-18 200-BK

2

2 4 3 1 779-WH-18 780-PU-18

115-PK-14 149-PU 191-WH-14 113-OR-18 129-BU-18 118-GY 152-BU-14 124-GN-14 147-PU-18 147-PU-18 120-YL 113-OR-18

K905-RD-14 196-BU 140-BU 107-RD 114-RD-18 103-RD 105-RD 168-RD-14 8 7 6 5 4 3 2 1

185-YL-18 150-RD-18 308-YL-18 112-PU-14 112-PU-14 112-PU-14 4 2 6 5 3 1

172-RD-18 154-RD-18 320-OR-18 111-RD-14 189-RD-14 112-PU-14 112-PU-14 177-RD-14 177-RD-14

151-GN-18 112-PU-14 2 1

4 3 2 1

8 10 4 6 2 12 3 1 5 7 9 11

176-YL 200-BK-18

547-OR-18 198-PK-18 546-BU-18 198-PK-18

200-BK-14 C537-GN-18 C538-OR-18 519-PK-18 124-GN-14 2 5 6 4 1 3

779-WH-18 200-BK-14 200-BK 200-BK 200-BK 200-BK 176-YL N923-GY-14 N923-GY-18 N923-GY-18 N923-GY-14 546-BU-18 198-PK-18 547-OR-18 198-PK-18 191-WH-14

L18

L21

2 8 3 4 6 12 7 9

L8

L9

185-YL-18 185-YL-18

K907-BU-18 A770-PK-18

L44 L42 L41 L29 L30

L. BOOM L. CHASSIS +B

MULTISWITCH JOSTICK 122-4828

185-YL-18

578-BU-18 405-GY-18 143-BR-12 145-BU-12

L30 L29 L41 L42 L44

4 3 1

308-YL-18 112-PU-14 112-PU-14 112-PU-14 113-OR-18 113-OR-18 129-BU-18 124-GN-14 118-GY 152-BU-14 120-YL 115-PK-14 191-WH-14

150-RD-18 150-RD-18 196-BU 176-YL K905-RD-14 185-YL-18 150-RD-18 172-RD-18 111-RD-14 189-RD-14 112-PU-14 112-PU-14 177-RD-12 177-RD-14 177-RD-14 177-RD-14 112-PU-14 168-RD-12 168-RD-14 168-RD-14 114-RD-18 103-RD 107-RD 105-RD 147-PU-18 147-PU-18 149-PU 140-BU

198-PK-18 546-BU-18 198-PK-18 547-OR-18 200-BK-18 320-OR-18 154-RD-18 151-GN-18

1 2 200-BK 779-WH-18

198-PK-18 546-BU-18 200-BK-18 320-OR-18 198-PK-18 547-OR-18

586-BR-18 L21

A755-PK-18 A756-PU-18 A757-WH-18 A758-BR-18 L972-BU-18 191-WH-14 N923-GY-14 N924-WH-18

615-YL-18 152-BU 113-OR-18 124-GN-18 105-RD 308-YL-18 185-YL-18 586-BR-18

8 6 7 4 5 3 2 1 308-YL-18 F771-OR-18 F772-WH-18 L969-WH-18 L968-OR-18 K915-GN-18 K907-BU-18

A758-BR-18 A757-WH-18 A756-PU-18 A755-PK-18

K909-BU-18 K909-BU-18

A/C PHOTO SENSOR 128-2162 (NOTE G)

L30 L29 L41 L42 L44

786-GN-18 791-PK-18 113-OR-18

BACKUP EPR VALVE SW 114-0421

4 5 11 12 10 2 1 3 6 7 8 9

K906-GN-18 L974-GN-18 A771-PU-18 L971-GN-18

198-PK-18 548-GY-18 198-PK-18 549-PK-18

L32

L31

WARMING WINDSHIELD BREAKER 8D-7265

40A

D

H

L33

WARMING WINDSHIELD RELAY 125-1302

FUEL HEATER BREAKER 3T-2662

15A

TRAVEL PRESS SW 106-0179

1 2

H

L13

L10

L1

IMPLEMENT PRESS SW 106-0179

1 2

H

LEFT SW

L1

B A771-PU-18 200-BK-18

PU GN WH

H

RIGHT SW

191-WH-14 N923-GY-14 N924-WH-18

BOOM RAISE PRESS SW 106-0180

1 2

A

L20

A

H

15A

200-BK 158-BR-14 158-BR-14 330-YL-18 330-YL-18 323-WH 323-WH

H

A

GND W. INT W. LOW WASH

A B C

L974-GN-18 200-BK-18

12 5 11 4 10 2 1 3 6 7 8 9

H

H

A

INDICATOR ON FUEL HEATER

START HEATER ESPAR 111-4871

101-RD-12 BR PK RD OR YL GY BU BK

A

200-BK-18 590-GY-18 501-GN-18 A586-OR-18

200-BK-18 L972-BU-18

START DISABLE RELAY 111-4871

386-PK-18 200-BK-14 112-PU-14 101-RD-14 323-WH 323-WH 145-BU-12

H

A587-YL-18 N923-GY-18 A587-YL-18 A587-YL-18 780-PU-18 779-WH-18 779-WH-18 200-BK 107-RD 196-BU 172-RD-18 189-RD 320-OR-18 154-RD-18 151-GN-18 150-RD-18 114-RD-18 168-RD-14 115-PK-14 149-PU 140-BU 177-RD-14 177-RD-14 111-RD-14 519-PK-18 147-PU-18 A424-WH-18 A425-YL-18 152-BU 954-GN-18 152-BU-18 961-BR-18 615-YL 638-WH 103-RD-18 506-PU 403-GN-18 200-BK-14 200-BK-14 200-BK-14 200-BK-14 200-BK 200-BK-18 235-BK-14 235-BK-14 954-GN-18 A771-PU-18 L978-GY-18 L974-GN-18 L977-YL-18 L908-OR-18 L909-BU-18 235-BK-18 788-YL-18 A762-PU-18 763-BU-18 412-BU-18 C468-BU-18 321-BR-18 405-GY-18 492-GY-18 491-PK-18 495-GN-18 430-BU-18 496-WH-18 K904-GN-18 A761-PU-18 487-OR-18 306-GN-18 L975-PK-18 L971-GN-18 K997-BU-18 L970-GY-18 L970-GY-18 A587-YL-18 961-BR-18 200-BK 786-GN-18 791-PK-18 308-YL-18 326-RD 307-OR-18 578-BU-18 8630-BU-18 L973-GN-18 K906-GN-18 A768-BU-18 A769-GY-18 A770-PK-18 F774-WH-18 F773-OR-18 K909-BU-18 310-PU-18 200-BK-18 152-BU-18 A588-GN-18 A587-YL-18 N923-GY-18 N923-GY-18 A587-YL-18 A588-GN-18 152-BU-18 200-BK-18 575-YL-18 576-PK-18 524-BU 118-GY

L19

ENG/PUMP CONT 126-2981

H

615-YL-18 152-BU-18 8630-BU-18 200-BK-18 200-BK-18

B

5A FUEL HEATER RELAY 111-4871

CONN 34

615-YL-18 615-YL-18 575-YL-18 576-PK-18 152-BU-18 152-BU-18 200-BK-18 200-BK-18

147-PU-18 L973-GN-18 K906-GN-18 L974-GN-18 A771-PU-18 L971-GN-18

L45

AF

3 11 10 9 1 2

578-BU-18 405-GY-18 200-BK-14 G872-PU-14 306-GN-18

CONN 33

L9

BK-18 RD-18 BU-18

12 6 5 7 8 4

SW ON/OFF FUEL HEATER

CONN 32

615-YL-18 615-YL-18 578-BU-18 152-BU 152-BU-18 200-BK-18 200-BK-18

L51

198-PK-18 546-BU-18 198-PK-18 547-OR-18 200-BK-18 320-OR-18 154-RD-18 151-GN-18 150-RD-18 154-RD-18 151-GN-18 150-RD-18 A B C

1 2 3 4 5 6 176-YL 200-BK A424-WH-18 A425-YL-18

L55

SWING BRAKE SOL 121-1491

1 2

K906-GN-18 200-BK-18

OUT 1 +B

308-YL-18 308-YL-18

SW OFF HEATER

A

L32

SW ON HEATER

INDICATOR ON HEATER

L56 L21 L40 L20 L19 L3 L38 L18 L16

615-YL-18 615-YL-18 961-BR-18 200-BK-18 200-BK-18 200-BK-18

B

IN 1 GND IN 2 OUT 2

RELAY PANEL

FINE SWING SOL 107-7056

1 2

2 4 1 3

RESISTOR 7Y-8242

TO WARMING WINDSHIELD

N

TIMER RELAY 111-4870

111-RD-14 177-RD-14

AK

147-PU-18 L973-GN-18

H

308-YL-18 200-BK-18 K909-BU-18 189-RD

A495-GY-18

A

L31

A B C

177-RD-8

L48

AF

405-GY-18 200-BK-18

WW

START RELAY 125-1302

CONN 9

ATTACHMENT-ENG OIL PRESS SW 3E-6455 (NOTE H)

CONN 45

ONE TOUCH LOW IDLE SW

L32

1 2

XX

D

L972-BU-18 308-YL-18 K915-GN-18 F771-OR-18 F772-WH-18 K907-BU-18 L968-OR-18 L969-WH-18

304-WH-8

A

198-PK-18 548-GY-18 198-PK-18 549-PK-18

A 386-PK-18

A

L56 L21 L40 L20 L19 L3 L38 L18 L16

200-BK-18

307-OR-18

ATCH. AUX. CKT 578-BU-18 200-BK-18

154-RD-18

CONN 24

CONN 23

CONN 22

L57

306-GN-18

L25

CONN 21

L31

877-YL-4

615-YL-18 A586-OR-18 501-GN-18 590-GY-18

2 3 4 5 6 1 7 8

KK

L25 NEUTRAL START RELAY 111-4871

F771-OR-18 F773-OR-18 F774-WH-18 F772-WH-18 L968-OR-18 L969-WH-18 A770-PK-18 K907-BU-18 K909-BU-18 185-YL-18 K906-GN-18 A768-BU-18 A769-GY-18 200-BK-18

G872-PU-14 200-BK-14 G872-PU-14 200-BK-14 578-BU-18 405-GY-18

A

L56 L21 L40 L20 L19 L3 L38 L18 L16

615-YL 615-YL-18 615-YL 615-YL-18

L33

1 2

A

L54

L51

386-PK-18 A718-PU-18

AK

ATCH FUEL HEATER 135-6299 (NOTE H)

LL

HEATER RELAY 116-0114

L22

CONN 40

L56 L16

L4

SENSOR O.W.D. 132-7315

SIGNAL IN SIGNAL OUT

1 2

CONSOL SW

+ 24V GND SENSOR 1 SENSOR 2

N923-GY-14 N924-WH-18 G848-GN-18 952-OR-18 F846-PU-18 955-BU-18 954-GN-18 4 2 6 7 1 3 5 8

L40

L38

L16

XX

9 2 3 4 5 6 10 11 7 8 1 12

A CONN 39

MULTISWITCH JOSTICK 122-4829

ATCH SEAT WITH SEAT HEATER 111-6458

B

607-PK-18 322-GY-18 616-BU 309-GY-18

A A424-WH-18 A425-YL-18

101-RD-4

KK B

BLOCK AS. 121-1023 B

L49

LOW PRESSURE SOL (A1) 121-1491

1 2

779-WH-18 200-BK-18

YY LL

B

304-WH-8

HIGH PRESSURE SOL (A2) 156-9513

780-PU-18 200-BK-18

A

549-PK-18 198-PK-18

BN GN BU BK G848-GN-18 952-OR-18 F846-PU-18 955-BU-18 954-GN-18 1 4 2 3 6 5

1 7 6 8 5 4 3 2 198-PK-18 200-BK-14 A587-YL-18 L970-GY-18 546-BU-18 547-OR-18 548-BU-18 549-OR-18 6 5 4 3 2 1

7

K976-OR-18 K975-WH-18 K974-PU-18 K973-BR-18 4 3 2 1

L40 L20 L19 L3 L38

A758-BR-18 A757-WH-18 A756-PU-18 A755-PK-18

B

1 2

ZZ B

877-YL-4

A CONN 38

S

L22

L20 L19 L3 L55

200-BK-18

UU

A

101-RD-14 101-RD-4

HIGH PRESSURE SOL (A3) 156-9513

780-PU-18 200-BK-18

A 780-PU-18 200-BK-18

RIGHT SW

LEFT SW

CONN 20

L54 L55

L20 L19 L3 L16 A

CONN 1

2 1

548-GY-18 198-PK-18 2 1 L34

N923-GY-14 N924-WH-18 200-BK-14 L970-GY-18 546-BU-18 547-OR-18 548-GY-18 549-PK-18

A758-BR-18 A757-WH-18 A756-PU-18 A755-PK-18 K976-OR-18 K975-WH-18 K974-PU-18 K973-BR-18 1 2 3 4 5 6 7 8 L55

308-YL-18 308-YL-18

200-BK-18 308-YL-18

A758-BR-18 A757-WH-18 A756-PU-18 A755-PK-18 4 3 2 1 L54

CONN 16

A

CONN 37

J

N923-GY-18 A587-YL-18 A587-YL-18 A587-YL-18 780-PU-18 779-WH-18 779-WH-18 200-BK 107-RD 196-BU 172-RD-18 189-RD 320-OR-18 154-RD-18 151-GN-18 150-RD-18 114-RD-18 168-RD-14 115-PK-14 149-PU 140-BU 177-RD-14 177-RD-14 111-RD-14 519-PK-18 147-PU-18 152-BU 152-BU-18 A425-YL-18 A424-WH-18 954-GN-18 N923-GY-18 K905-RD-14 508-PU-18 509-WH-18 511-BR-18 512-GN-18 129-BU-18 120-YL 135-BU 210-BK 118-GY 633-BU-18 139-OR-18 C538-OR-18 C537-GN-18 103-RD 955-BU-18 952-OR-18 F846-PU-18 G848-GN-18 G848-GN-18 F846-PU-18 952-OR-18 955-BU-18 954-GN-18 547-OR-18 N923-GY-14 N924-WH-18 546-BU-18 200-BK-14 198-PK-18 548-GY-18 549-PK-18 549-PK-18 548-GY-18 191-WH-14 N923-GY-14 N924-WH-18 308-YL-18 124-GN-18 113-OR-18 185-YL-18 105-RD 152-BU 586-BR-18 198-PK-18 198-PK-18 198-PK-18 198-PK-18 198-PK-18 198-PK-18 200-BK-14 200-BK-14 200-BK-14 200-BK-18 200-BK-18 200-BK-14 200-BK-14 200-BK-14 235-BK-14 200-BK-14 200-BK-14 200-BK 200-BK-18 200-BK PLATFORM 586-BR-18 A424-WH-18 A425-YL-18 176-YL 200-BK

112-PU-6

PLATFORM

ANTI DRIFT PRESS SW (VA BOOM) 1 2

D H918-WH A587-YL

200-BK-18 L970-GY-18

A847-YL-18 A848-PK-18 200-BK-18 1 2 4 3

1 2

1 2

1 2

2 1

1 2

CONN 15

L54

112-PU-6 112-PU-14 109-RD-6

1 2

HORN SW 128-2134

A

A

J

112-PU-14 112-PU-14 112-PU-14 112-PU-14 112-PU-14 112-PU-14

L17

A B C

A B C

A718-PU-18 A495-GY-18 L975-PK-18 306-GN-18 306-GN-18 306-GN-18 310-PU-18 200-BK-18 308-YL-18 200-BK-18 177-RD-14 177-RD-14

200-BK 196-BU 320-OR-18 114-RD-18 322-GY-18 786-GN-18 149-PU 616-BU

L970-GY-18 951-PK-18

A

J

L16 L20 L19 L25 L3 L4

L30

JJ

L47

L51

780-PU-18 200-BK-18

A CONN 36

J

A

L16 L20 L19 L25 L3 L4

L29

A

JJ

615-YL-18 615-YL-18 A537-PK-18 124-GN-18 200-BK-18 200-BK-18

L41

JJ

MM

NEUTRAL START LIMIT SW 111-4799

615-YL-18 615-YL-18 L973-GN-18 K915-GN-18 200-BK-18 200-BK-18 200-BK-18

L42

JJ CONN 14

CONT O.W.D. 132-5096

J

A

L34

ATCH-AUX/BACKUP RELAY 145-6907

310-PU-18

A424-WH-18 A425-YL-18 780-PU-18 780-PU-18 780-PU-18 780-PU-18 780-PU-18 779-WH-18 779-WH-18 779-WH-18 779-WH-18 200-BK 200-BK 200-BK-18 200-BK-18 200-BK-18

J

CONN 35

NN

CONN 2

B

J

A

1 2 3 4

CONN 7

JJ

615-YL-18 615-YL-18 586-BR-18 200-BK-18 200-BK-18 200-BK-18

L44

L48

JJ

JJ

A

CONN 19

615-YL-18 615-YL-18 308-YL-18

E

D

DIODE 121-1022

A CONN 44

A755-PK-18

308-YL-18 177-RD-14

J

AUX CKT SW PANEL CIGAR LIGHTER A/C /HEATER WASHER/WIPER ATCH-AUX CKT CONVERTER CAB/CHASSIS LAMP ATCH-AUX CKT

ROTARY SW 155-2715

A/C UNIT 126-3375

NN

NN

L33

200-BK 311-WH-18 519-PK-18 877-YL-4 A718-PU-18 492-GY-18 309-GY-18 109-RD-6 403-GN-18 304-WH-8 101-RD-4 C468-BU-18 A762-PU-18 788-YL-18 405-GY-18 326-RD F774-WH-18 F773-OR-18 A761-PU-18 172-RD-18 K997-BU-18 K904-GN-18 A769-GY-18 A768-BU-18 L978-GY-18 763-BU-18 L977-YL-18 491-PK-18 487-OR-18 496-WH-18 386-PK-18 306-GN-18 168-RD-14 607-PK-18 322-GY-18 616-BU 495-GN-18

200-BK 196-BU K909-BU-18 L975-PK-18 607-PK-18 322-GY-18 616-BU 309-GY-18 386-PK-18 A718-PU-18 310-PU-18

CONN 17

A756-PU-18

306-GN-18 306-GN-18 K909-BU-18 A495-GY-18 200-BK-18 200-BK-18 200-BK-18 386-PK-18 154-RD-18 307-OR-18 189-RD 111-RD-14 200-BK-18

J

10A 10A 15A 10A 10A 10A 15A 15A

MM

590-GY-18 501-GN-18 A586-OR-18

A

140-BU 310-PU-18 430-BU-18 412-BU-18 321-WH-18 311-WH-18 200-BK

L50

2 1 3 6 4 5

954-GN-18 N924-WH-18 A758-BR-18 A757-WH-18 A756-PU-18 A755-PK-18

N924-WH-18

J

HORN DOME LAMP SHUTDOWN KEY SW REFUELING PUMP FINE SWING SOL FLOW CONT SOL BOOM LAMP LUBRICATOR

114-RD-18 103-RD 107-RD 105-RD 168-RD-12 147-PU-18 147-PU-18 149-PU 140-BU

S

310-PU-18 200-BK-18

CONN 3

109-RD-6 101-RD-4 877-YL-4 304-WH-8 607-PK-18 322-GY-18 616-BU 309-GY-18 A718-PU-18 306-GN-18 386-PK-18

L49

200-BK K909-BU-18 196-BU L975-PK-18

A757-WH-18

J

615-YL-18 308-YL-18 310-PU-18 586-BR-18 K915-GN-18 L973-GN-18 A537-PK-18 124-GN-18 961-BR-18 578-BU-18 152-BU 575-YL-18 576-PK-18 8630-BU-18 A755-PK-18 A756-PU-18 A757-WH-18 A758-BR-18 308-YL-18 308-YL-18 308-YL-18 308-YL-18 105-RD 307-OR-18 326-RD 113-OR-18 791-PK-18 786-GN-18 A586-OR-18 501-GN-18 590-GY-18 198-PK-18 548-GY-18 198-PK-18 549-PK-18 L972-BU-18 200-BK-18 200-BK-18 200-BK-18 200-BK-18 200-BK

RELAY PANEL

A758-BR-18

J

10A 10A 10A 10A 30A 10A 10A 10A

ATCH AM/FM RADIO JJ

JJ

L20 L19 L3 L16 L25 L4

A

1 2 3 4 5 6 7 8 9 10 11 12

N B

N924-WH-18

AUX CKT O.W.D. BACKUP INSP LAMP HYD LOCK SW HYD LOCK SOL ENG GOV E/P CONT

180-GN 176-YL 185-YL-18 196-BU 150-RD-18 150-RD-18 172-RD-18 K905-RD-14

112-PU-14 112-PU-14 112-PU-14 308-YL-18 113-OR-18 113-OR-18 129-BU-18 124-GN-14 118-GY 152-BU-14 120-YL 115-PK-14 191-WH-14

BUZZER AS 113-4683

CONN 18

NN

Y/W

F

7 12 10 4 5 6 9 8 11 3 1 2

A B C

UU

MAIN RELAY 3T-0376

8 1 2 7 3 4 5 6

Y/G

L50

519-PK-18 492-GY-18 405-GY-18 C468-BU-18 A762-PU-18 788-YL-18 403-GN-18 326-RD 495-GN-18 496-WH-18 491-PK-18 A769-GY-18

A

1 2 3 4 5 6 7 8 9 10 11 12

152-BU 8630-BU-18 638-WH

L45

D ATCH BEACON RELAY

VV

1 2 3 4 5 6 7 8

F846-PU-18 G848-GN-18 546-BU-18 547-OR-18 548-GY-18 549-PK-18 K973-BR-18 K974-PU-18 K975-WH-18 K976-OR-18

NN

952-OR-18 954-GN-18 WW

NN

NN

L47

A A

1 2

L53

J

191-WH-14 N923-GY-14 N924-WH-18

CONN 4

L53

N919-GN-18 N920-BU-18 N921-YL-18 N922-OR-18 K973-BR-18 K974-PU-18 K975-WH-18 K976-OR-18 200-BK-18

10A 10A 10A 10A 10A 10A 15A

ANTENNA CABLE 111-4846

L20 L19 L3

A CONN 6

140-BU 168-RD-14 L971-GN-18 103-RD-18 107-RD 310-PU-18 172-RD-18 487-OR-18 A768-BU-18 412-BU-18 321-BR-18

1 2 3 4 5 6 7 8 9 10 11 12

DIODE 121-1022

112-PU-14 177-RD-12 177-RD-14

111-RD-14 189-RD-14 112-PU-14 112-PU-14

ATCH-FOOT SWITCH PEDAL-RH

FUSE BASE 111-4812

QQ CONN 11

200-BK-18 200-BK-18 306-GN-18 306-GN-18 200-BK-18 177-RD-8 A495-GY-18 308-YL-18 177-RD-14 111-RD-14 189-RD K909-BU-18 200-BK-18 307-OR-18 154-RD-18 200-BK-18 386-PK-18

L15

177-RD-14 177-RD-14 A770-PK-18 189-RD 114-RD-18 320-OR-18 149-PU 786-GN-18 154-RD-18 615-YL 791-PK-18 115-PK-14

D

306-GN-18 177-RD-14 177-RD-14 K909-BU-18 A770-PK-18 791-PK-18 115-PK-14 615-YL 607-PK-18 200-BK-18 200-BK-18 200-BK-18 151-GN-18 150-RD-18 A588-GN-18 A587-YL-18 196-BU 320-OR-18 114-RD-18 322-GY-18 786-GN-18 149-PU 616-BU 200-BK A718-PU-18 L975-PK-18 308-YL-18 310-PU-18 A495-GY-18 K909-BU-18 306-GN-18 306-GN-18

306-GN-18 200-BK-18

ATCH TRAVEL ALARM 3E-7738

CONN 10 NN

1 2

K997-BU-18 763-BU-18 L977-YL-18 L978-GY-18 L974-GN-18 A771-PU-18 K906-GN-18 430-BU-18 K904-GN-18 A761-PU-18 F773-OR-18 F774-WH-18

A

L52

L52

ATCH-FOOT SWITCH PEDAL-LH

ANTENNA 106-0036

+24 VDC OUT-WATER PUMP +24 VDC IN-FUEL HEATER +24 VDC IN-FUEL HEATER GROUND FUEL FIRED HEATER-ENABLE FUEL PUMP FUEL PUMP

L50 2 1

G

NN

HAMMER 2 SOL (ON/OFF) 116-3413

L970-GY-18 955-BU-18 200-BK-14 N923-GY-14 952-OR-18

112-PU-6 308-YL-18

412-BU-18 310-PU-18 311-WH-18

200-BK 140-BU

200-BK-18 200-BK 200-BK-18 200-BK 200-BK-18 200-BK-18 321-BR-18 321-BR-18 200-BK 140-BU 430-BU-18 B

151-GN-18 150-RD-18 A588-GN-18 A587-YL-18 308-YL-18 111-RD-14

307-OR-18 308-YL-18 111-RD-14 151-GN-18 150-RD-18 A588-GN-18 A587-YL-18 306-GN-18 177-RD-14 177-RD-14 A770-PK-18 189-RD 114-RD-18 320-OR-18 149-PU 786-GN-18 154-RD-18 615-YL 791-PK-18 115-PK-14 200-BK-14 200-BK-14 200-BK-18 200-BK 200-BK-18 200-BK-18 200-BK-18 200-BK-18 200-BK-18 200-BK-18 200-BK

PLATFORM

CHASSIS

NN

ATCH-AUX/HYD CONTROLLER 122-9897

177-RD-14 177-RD-14 200-BK-18

B

200-BK-18 430-BU-18

B

4 11 12 1 5 6 7 8 9 10 2 3

177-RD-6 177-RD-14 177-RD-8

2 1 B

NN

CONN 5 235-BK-18 L908-OR-18 L909-BU-18 307-OR-18 306-GN-18

309-GY-18

AIR CLEANER SW 109-9330

L45

L15 ATCH AUTO LUBRICATION PUMP 127-5264 GROUND ON(KEY)

H

QQ

8

200-BK 200-BK-18 578-BU-18 780-PU-18 779-WH-18 779-WH-18 177-RD-14 177-RD-14 A770-PK-18 189-RD 114-RD-18 320-OR-18 149-PU 786-GN-18 154-RD-18 615-YL 791-PK-18 115-PK-14 307-OR-18 308-YL-18 111-RD-14 306-GN-18 151-GN-18 150-RD-18 A588-GN-18 A587-YL-18 K909-BU-18 196-BU L975-PK-18 L908-OR-18 L909-BU-18 235-BK-18 152-BU 8630-BU-18 638-WH 200-BK A424-WH-18 A425-YL-18 112-PU-6 147-PU-18 L973-GN-18

K909-BU-18 K909-BU-18 A770-PK-18 791-PK-18 115-PK-14 615-YL 607-PK-18 200-BK-18 151-GN-18 150-RD-18 A588-GN-18 A587-YL-18

506-PU 200-BK-18

PP NN

200-BK 200-BK 200-BK-18 200-BK-18 200-BK 955-BU-18 N923-GY N923-GY N923-GY-18 N923-GY-14 952-OR-18 952-OR-18 952-OR-18 952-OR-18 952-OR-18 952-OR-18 952-OR-18 N923-GY-14 200-BK 200-BK-18 200-BK-18 200-BK-14 200-BK-14 A847-YL-18 A848-PK-18

L908

PRESSURE SW 106-0179

PROX SW 3T-3132

F/C SOL (PROP.) 137-6464

PP

1 2

1 2

C D

L909

HEATER CONT UNIT 104-3204

AC2 (ON/OFF) 121-1491

A849-OR-18 A850-WH-18

B

EE (NOTE C) FF (NOTE C) RD-00 RD-00 ATCH BATTERY 3T-5760 POS NEG POS NEG (NOTE C)

310-PU-18 311-WH-18

200-BK-18 412-BU-18

SIS CONNECTOR 3E-5136 CONN 46 235 A E

RELAY GND KEY SW.(ON) CHECK TERM.

POS NEG

KEY SW.(START)

POS NEG

TEMP. REGULATOR INDICATOR

BATTERY 3T-5760

B

616-BU

AC1 (ON/OFF) 121-1491

13 19 24 1 7 18 2 14 20 8 6 12 5 11 17 23 22 16 10 4 21 15 9 3

950-BR-18 585-YL-18 200-BK A849-OR-18 A850-WH-18 N923-GY 952-OR-18 A847-YL-18 A848-PK-18 951-PK-18 F846-PU-18 G848-GN-18 546-BU-18 547-OR-18 548-GY-18 549-PK-18 K976-OR-18 K975-WH-18 K974-PU-18 K973-BR-18 N922-OR-18 N921-YL-18 N920-BU-18 N919-GN-18

AUX PILOT MAN AC1 AUX PILOT MAN AC2 GROUND FLOW CONTROL SOL FLOW CONTROL SOL AUX CKT POWER SUPPLY PRESSURE SW MEDIUM PRESS SOL R2 MEDIUM PRESS SOL R1 HAMMER 2 SPEED SOL PROX SW ROCKER SW CSL LH - JOYSTICK LH - JOYSTICK RH - JOYSTICK RH - JOYSTICK E/P CONTR E/P CONTR E/P CONTR E/P CONTR THROTTLE POS SW THROTTLE POS SW THROTTLE POS SW THROTTLE POS SW

BOOM LAMP RELAY 111-4871

GG (NOTE C)

B

786-GN-18 149-PU-18 149-PU-18 149-PU

A588-GN-18 A587-YL-18

BK-00

ATCH START AID SOL 3E-6332

BB RD-00

FUSE 10A 9W-1442 15A 9W-1441 30A 8T-9636

322-GY-18

150-RD-18 BK-00

AA RD-00

QQ

1 2

DD

L15

GROUND STRAP 7G-1060

1 2 3 4

HYD LOCK SOL RELAY 111-4871 200-BK-18 151-GN-18

CHASSIS

COOLANT LEVEL SW 096-0744

320-OR-18 114-RD-18 114-RD-18 114-RD-18

615-YL 607-PK-18

L15

HORN RELAY 111-4871

950-BR-18 200-BK-18 200-BK-18 200-BK-18 200-BK-18 200-BK-18 585-YL-18

A

CC

K909-BU-18 K909-BU-18 A770-PK-18

I

DD

BK-00

200-BK 200-BK-18 200-BK

177-RD-6

AD

200-BK

FOR INSP LAMP 9R-7941

791-PK-18 115-PK-18 115-PK-18 115-PK-14

VV

101-RD-6

A

GG (NOTE C)

CAB/CHASSIS LAMP RELAY 111-4871

60A

109-RD-6

A

MOTOR

AD

ZZ 60A

101-RD-6 101-RD-6

506-PU

YY

BACKUP RESISTOR 102-8016

200-BK 196-BU 320-OR-18 114-RD-18 322-GY-18

L15 WASHER 7T-8890

MAIN BREAKER 9S-0174

NN

DISCONNECT SW. 7N-0718 7N-0719(NOTE C)

ALT BREAKER 9S-0174

L15

AUX PRESS SW 131-9203

L40 L20 L19 L3

L15 SOL R1/R2 125-8075

L21 L40 L20 L19 L3 L38 L18

L15 RELAY PANEL

A A587-YL-18 200-BK-18

2 1

RS485 + (RH JOYSTICK)

C KEY DECEL ACCEL F/B +B GND

6 5 4 3 1 2

B

E

CAB

L6

GAUGE CIRCUIT.

1 2

L29

A769-GY-18 A768-BU-18 L978-GY-18 763-BU-18 L977-YL-18

306-GN-18

WASHER/WIPER CIRCUIT.

L43

HEATER AND AIR CONDITIONER CIRCUIT. GROUND CIRCUIT.

1 2

ENGINE SHUTDOWN CONTROL CIRCUIT. OPERATOR INTERLOCK CIRCUIT.

F774-WH-18 F773-OR-18 A761-PU-18 172-RD-18 200-BK-18

B

START AID CIRCUIT.

LEVEL FINISH SOL 121-1490

B 1 2

B 1 2

TRAVEL SPEED SOL 121-1491

TRENCHING SOL 121-1490

AF

ENG GOV ACTUATOR 106-0126

H918-WH 200-BK 2 1 235-BK-14

K997-BU-18

A B C

L2

H918-WH 200-BK

K997-BU-18 K997-BU-18 K997-BU-18 K997-BU-18 K912-GN-18 K911-PK-18 403-GN-18

306-GN-18 L975-PK-18 L971-GN-18 954-GN-18 L970-GY-18 K997-BU-18

492-GY-18 491-PK-18 495-GN-18 430-BU-18 496-WH-18 K904-GN-18 A761-PU-18 487-OR-18 954-GN-18 235-BK-18 235-BK-18

788-YL-18 A762-PU-18 763-BU-18 412-BU-18 C468-BU-18 321-BR-18 405-GY-18

A771-PU-18 L978-GY-18 L974-GN-18 L977-YL-18

L908-OR-18 L909-BU-18 235-BK-18

K905-RD-18 K905-RD-18 K905-RD-14

L3

2 1

C538-OR-18 C537-GN-18

103-RD-18 129-BU-18 403-GN-18 615-YL-18

K997-BU-18 K911-PK-18 K912-GN-18

590-GY-18 501-GN-18 A586-OR-18 200-BK-14 PS

2 WAY

RABBIT

L4

2 1

1 2 3 4 5 6 7 8

1 2 3 4 5 6 7 8 118-GY 506-PU 524-BU

N923-GY-18 F846-PU-18 G848-GN-18 961-BR-18 955-BU-18 952-OR-18

L972-BU-18 308-YL-18 A758-BR-18 A757-WH-18 A756-PU-18 A755-PK-18 K915-GN-18 F771-OR-18 F772-WH-18 K907-BU-18 L968-OR-18 L969-WH-18

L#

YL BK

1 2

L2

OPERATOR STATION

1 4 3 2

2 1 306-GN-18

ENG/PUMP CONT SOL 111-9916

AE

A B C B

CONN 12

B

B

L5

616-BU 322-GY-18 607-PK-18 168-RD-14

616-BU 322-GY-18 200-BK 200-BK-18 200-BK-14 200-BK-18

B

CONN 29

CONN 41 R

AC

4 1 3 2 B

B

386-PK-18

491-PK-18

306-GN-18

200-BK-18 200-BK-18

+B GROUND SIGNAL

HYD OIL FILTER SW 116-3660

B

T B

HYD OIL TEMP SENDER 4I-5394

R

R

AC 325-PK-18

CONN 31

T

R

200-BK-18 496-WH-18

2 1 B

HYD OIL LEVEL SW 111-4760

AB 322-GY-18 200-BK-18

322-GY-18 322-GY-18 200-BK-18 200-BK-18

200-BK-14

U

U

ATCH REFUELING STOP SW(NC) 9X-4184

T

T

ATCH REFUELING START SW(NO) 6T-9442

168-RD-14 168-RD-14

K

K G (NOTE B) L

HORN 7Y-3919 AB

HORN 7Y-3920

ATCH BOOM LAMP 5I-8250

616-BU 200-BK G (NOTE B) L

AB

UU VV WW XX YY ZZ AD

THIS SCHEMATIC IS FOR THE 320B-HYD EXCAVATOR. (116-0212 V 01) COMPONENTS ARE SHOWN INSTALLED ON A FULLY OPERABLE MACHINE WITH THE KEY AND ENGINE OFF.

CHASSIS LAMP 5I-8251

UNLESS OTHERWISE SPECIFIED ALL WIRE IS 16 Gauge.

NOTE B ; USE WITH SHORT BOOM. + ATCH REFUELING RELAY 2 111-4871

NOTE C : USE WITH COLD WEATHER.

-

NOTE E : NOT NECESSARY FOR ELECTRIC OPENABLE WINDSHIELD. ATCH REFUELING PUMP 123-3928

111-4826 128-8937 128-8938 111-4829 111-4830 111-4831 128-8936

NOTE G : USE WITH A/C UNIT

121-0997 116-0080 143-1646 111-4881 121-0996 116-0080 116-0242 132-1806 111-4833 111-4832 111-4846

A A-11 I-11 I-11 I-11 A-11 H-11 I-11 A-12 F-11 F-11 I-4

NOTE H : USE WITH ARCTIC PACKAGE E97638

12

11

10

9

8

7

6

5

4

3

2

1

B

F-11 G-10 F-11 F-11 F-11 F-11 I-11

CABLE AS. AA BB CC DD EE FF GG HH KK LL MM

B 200-BK-18 607-PK-18

R

323-WH-14 ATCH REFUELING RELAY 1 111-4871

R

H918-WH 200-BK

ATCH BOOM LAMP 5I-8250

616-BU 200-BK

1 2

L976-GN-18

U ATCH REFUELING SW 5C-6108

AB

2 1

CONN 43 616-BU 200-BK 322-GY-18 200-BK-18

CHASSIS

325-PK-18 365-YL-18

CONN 30

LOC

A 152-7674 C-2 B 144-8419 B-3 C 130-6572 A-12 D 155-1788 G-11 E 130-6568 C-5 F 154-8149 C-6 G 4I-5396 B-1 H 175-3000 D-3 J 175-1317 H-3 K 148-5179 B-1 L 7Y-3994 A-1 M 117-7028 C-6 N 116-0247 E-11 R 128-8876 A-3 S 136-4731 H-2 T 116-0096 A-4 U 116-0098 A-4 JJ 153-1149 H-5 NN 153-7794 I-6 PP 160-0973 I-6 QQ 134-6475 I-6 AB 125-4873 A-2 AC 132-1827 A-4 AE 121-1044 A-6 AF 162-0341 E-9 WIRE AS.

L2

L2

325-PK-18

495-GN-18 200-BK-18

PART NO.

HARNESS AS.

B FUEL LEVEL SENSOR 105-9911

CIRCUIT GROUPING DESIGNATION

IDENT

B

168-RD-18 200-BK-18 487-OR-18

200-BK-18 200-BK-18 200-BK-18

ALL DASHED LINES ARE ATTACHMENTS.

ELECTRICAL CONNECTION TO VEHICLE STRUCTURE

L25

CONN 42 L5

CHASSIS 1 4 3 2

386-PK-18

MONITOR CIRCUIT. (EMS)

B C468-BU-18 200-BK-18

CIRCUIT CONNECTED

ANTI-DRIFT SOL (VA BOOM)

168-RD-14 607-PK-18 322-GY-18 616-BU 200-BK-18 495-GN-18

DESCRIPTION

BLADE, SPADE, RING, OR SCREW TERMINAL

ATCH WIRE, CABLE, COMPONENT

L6

607-PK-18 322-GY-18 616-BU 495-GN-18 168-RD-14 168-RD-14 168-RD-14 168-RD-18 200-BK-18 200-BK-18 200-BK-18 200-BK-18 200-BK-18

SYMBOL

C

CIRCUIT NOT CONNECTED

615-YL

L30

RED WHITE ORANGE YELLOW PINK BLACK GRAY PURPLE BROWN GREEN BLUE

CONNECTOR

323-WH-14 200-BK-14

ENG OIL LEVEL SW 111-4759

L25

COLOR

RD WH OR YL PK BK GY PU BR GN BU

INTERNAL ELECTRICAL CONNECTION TO SURFACE OF COMPONENT

1 2

L30

F

L6

L29

STARTING CIRCUIT.

1 5 3 2 4 6

5 6 4 3 2 1 103-RD-18 200-BK-14 508-PU-18 509-WH-18 511-BR-18 512-GN-18

L6

386-PK-18 306-GN-18 496-WH-18 491-PK-18 487-OR-18 200-BK-18 200-BK-18 168-RD-18

WIRES THAT HAVE BATTERY VOLTAGE WHEN THE KEY SWITCH IS ON.

LUNCH BOX LIGHT

ABBREV

L19

L976-GN-18

CHASSIS

WIRES THAT HAVE BATTERY VOLTAGE WHEN THE KEY SWITCH IS OFF.

L43

A

HH A762-PU-18 788-YL-18 405-GY-18 326-RD 519-PK-18 B

103-RD-18 103-RD-18 103-RD-18

L6 UPPER WIPER MOTOR 131-0399

200-BK-18 200-BK-18 201-BK-18

L30

A768-BU-18 A769-GY-18

CONN 8 6 4 3 5 1 2

1 2

1 2

500-BR-18

L29

L978-GY-18

C BK-00

CHASSIS

B 200-BK-4 200-BK-6 200-BK-18 200-BK-18 200-BK-18

200-BK-18

200-BK-18 200-BK-10 200-BK-18

HH

638-WH 200-BK

MOTOR

103-RD-18 200-BK-14 638-WH 615-YL 200-BK-14 506-PU 961-BR-18 403-GN-18

L976-GN-18 L976-GN-18 365-YL-18

101-RD-4 AA RD-00 EE RD-00

L26

L27

210-BK 139-OR-18 633-BU-18 120-YL 524-BU 118-GY 638-WH

F

MOTOR

200-BK-2 200-BK-4 200-BK-18 BK-00

B

304-WH-8

763-BU-18

STARTER MOTOR 128-5621

MTR BAT

S

L20

C A BB

C 301-BU-10

MOTOR

DOME LAMP 096-0721

L20

168-RD-18 168-RD-18 L976-GN-18 L976-GN-18 365-YL-18 365-YL-18

S

G

F

C B A

L29

301-BU-10

B

L6

M M 615-YL 200-BK

200-BK-18

BAT MTR

STARTER MOTOR 104-7040

E

F

524-BU 118-GY

CAB

200-BK-18 K997-BU-18 K904-GN-18

6V-5821 (NOTE C)

G

L977-YL-18

EE

101-RD-2 B RD-00 RD-00

S

615-YL

CAB LAMP 5I-8250

B

200-BK-18

AA

B

12V SOCKET 9R-7941

L42

101-RD-2 304-WH-8 304-WH-8

615-YL

ENG SPEED PICKUP 6V-2455

200-BK-2

E

L26

TO ATCH SPEAKER(L) FOR OUTSIDE JAPAN

524-BU 403-GN-18 506-PU 615-YL-18 129-BU-18 118-GY 103-RD-18 200-BK-14 K997-BU-18 501-GN-18 590-GY-18 A586-OR-18 K912-GN-18 K911-PK-18 C538-OR-18 C537-GN-18

2 1

WH BK

F

200-BK-18 200-BK 200-BK-14

L42 L41

2 1

M M 615-YL 200-BK

F F

WINDSHIELD SW 9G-2795 (NOTE E)

BK-18 YL-18 BR-18

788-YL-18 A762-PU-18

L41

B (NOTE H)

C

403-GN-18

B

ATCH START AID COOLANT TEMP SW. 3E-6449

200-BK-18 200-BK-18 200-BK-18 200-BK-18 200-BK-18

ALT B-

R

PUMP DISCHARGE PRESS SENSOR 106-0178

B 311-WH-18 200-BK-18

TO ATCH SPEAKER(R) FOR OUTSIDE JAPAN

CONVERTER 131-0327

WIPER CONT 127-9838

L6

200-BK-18

B A C

B+

1 2

T

BK-18 RD-18 BU-18

ALT BB

403-GN-18 B

200-BK-4 200-BK-18 200-BK-6 200-BK-18

109-RD-2

B (NOTE H) ALTERNATOR 159-9901

A B C

CHASSIS E

R

WIND SW INTER SW OUTPUTS WIPER SW MOT WASHER +24 IN WASH SW GND IN

2 5 8 1 3 9 6 4 7

4 7 6 8 5 2 3 1

L976-GN-18 168-RD-18

B

ENG OIL PRESS SW 3E-6455

C

B

LIGHT IN 24V 12V SW. OUT GND 12V MEM OUT LIGHT OUT 12V 24V SW. IN 24V BAT IN MEM GND

L27

6 4 2 3 5 1 7

2 1

D

200-BK-6

USED FOR ARCTIC PACKAGE 405-GY-18 200-BK-18

B B+

ENG SHUTDOWN SOL 8C-3663

GROUND +B SIGNAL

C

CIGAR LIGHTER 9W-0335

500-BR-18 590-GY-18 524-BU 501-GN-18 506-PU 118-GY A586-OR-18 200-BK

200-BK 200-BK-18

309-GY-18 109-RD-6

200-BK-18

325-PK-18 365-YL-18

ALTERNATOR 9W-3043

C 200-BK-10 C 301-BU-10

B

T

1 2

492-GY-18 B

E

1 2

200-BK-18

E 129-BU-18 200-BK-18

L44

-

E

G848-GN-18 F846-PU-18 955-BU-18 952-OR-18 961-BR-18 N923-GY-18 118-GY 524-BU 120-YL 615-YL 508-PU-18 509-WH-18 511-BR-18 512-GN-18 103-RD-18 210-BK 200-BK-14 135-BU 633-BU-18 638-WH 139-OR-18 135-BU

325-PK-18

B

C

L43

+

E

SERVICE METER 6T-7337

E

1 WAY

COOLANT TEMP SENSOR 4I-5394

A/C CLUTCH SOL 3E-1906

A762-PU-18 788-YL-18 405-GY-18 326-RD 519-PK-18 F774-WH-18 F773-OR-18 A761-PU-18 172-RD-18 200-BK

403-GN-18

524-BU 524-BU 118-GY 118-GY 118-GY 118-GY G848-GN-18 952-OR-18 F846-PU-18 955-BU-18 139-OR-18 135-BU 120-YL 633-BU-18 210-BK C538-OR-18 N923-GY-18 C537-GN-18 129-BU-18 512-GN-18 511-BR-18 509-WH-18 508-PU-18 103-RD-18 103-RD-18 103-RD 103-RD K905-RD-14 K905-RD-14 103-RD 103-RD 200-BK-14 638-WH 615-YL 200-BK-14 506-PU 961-BR-18 403-GN-18 A586-OR-18 501-GN-18 590-GY-18 615-YL 615-YL 615-YL-18 403-GN-18 403-GN-18 403-GN-18 403-GN-18 K911-PK-18 K912-GN-18 K997-BU-18

CONN 28 A

200-BK 200-BK 200-BK 200-BK-18 200-BK-18 200-BK-14 200-BK-18

1 2 519-PK-18 513-OR-18

T

326-RD

B A718-PU-18 200-BK-18

1 2

L6

CONN 27

A

F

615-YL 615-YL 615-YL-18 135-BU 135-BU 210-BK 210-BK

OR

PK

AIH COOLANT TEMP SENSOR 125-4812

513-OR-18 200-BK-18

877-YL-4 A718-PU-18 492-GY-18 309-GY-18 109-RD-6 403-GN-18 311-WH-18 304-WH-8 101-RD-4 C468-BU-18

877-YL-4

A

F

B

200-BK-4

200-BK-18 200-BK-18

B

CONN 26

CONN 25

A

AIR HEATER 6I-4753

REFRIGERANT LOW PRESS SW 114-5333

C

CONN 13

RS485+ MAIN +B RS485LIGHT GND

9 11 8 3 7 4 2 5 1 12 6 10

K911-PK-18 K997-BU-18 103-RD-18 K912-GN-18 615-YL-18 201-BK-18

135-BU

L42 L41 L29 L30

MONITOR 106-0172

E

8

L44

ATCH ROTATING BEACON LAMP