Cat Electrical M312 and M315 Excavators Electrical System Schematic Manual - PDF DOWNLOAD

Part No. 3E-1906

Resistor, Sender and Solenoid Specifications Component Description

Solenoid:

8U-6424

Solenoid:

172-7029

112-7178

116-4710

119-3401

7W-1251

Solenoid:

Sender:

Sender:

Sender:

Resistor:

17.6 ± 0.6

Blade Front Blade Rear Hammer Heavy Lift Left Front Stabilizer Lockout Left Rear Stabilizer Lockout Parking Brake Right Front Stabilizer Lockout Right Rear Stabilizer Lockout Transmission Speed

19

OSC Axle Lock Creeper Speed Swing Brake Travel Activation Implement Activation

33.8/17 Watt

Fuel Level

Full = 0.4 Empty = 70.6

Hydraulic Oil Temperature

Coolant Temperature

38.5 @ 100 ºC (212 ºF) 51.2 @ 90 ºC (194 ºF) 134 @ 60 ºC (140 ºF) 38.5 ± 3 @ 100 ºC (212 ºF) 52.2 ± 4.7 @ 90 ºC (194 ºF) 34 ± 13.5 @ 60 ºC (140 ºF)

Glow Plug System

0.83/40 Watt

110-6158

Resistor:

Start/Stop

4/75 Watt

122-2373

Resistor:

Heater Fan

Position 1 = 6 Position 2 = 1.5

Resistor:

Backup Main Pump PRV Backup Swing Pump PRV

124-0329 140-2238

Resistor:

Component

Resistance (Ohms)¹

A/C Clutch

Overall 6.0; Tap 1.5 or 4.5

Coolant Temperature

25/25 Watt

¹ At room temperature unless otherwise noted.

Schematic Location

AEC - Aux. Hyd.

Title

Form Number

Alternator: 109-2362

SENR3685

Machine Electronic Control System

RENR1199

Machine Location

Component

Schematic Location

Machine Location

F-8

D

Solenoid - Left Rear Stabilizer Lockout

G - 10

6

Alternator

C - 13

21

Solenoid- Main Pump PRV

G - 14

11

Alternator Fuse

C - 15

16

Solenoid - OSC Axle Lock

F - 14

17

Battery 12v (2)

H - 13

24

Solenoid - Parking Brake

F - 14

17

Cigar Lighter

F-2

A

Solenoid - Right Front Stabilizer Lockout

G-1

1

Converter 24v - 12v

D-3

A

Solenoid - Right Rear Stabilizer Lockout

H - 10

6

Diode - A/C

E - 13

D

Solenoid - Swing Brake

G - 15

11

Diode - AEC - Aux. Hyd.

F-8

D

Solenoid - Swing Pump PRV

G - 14

11

Diode - Brake

D-6

D

Solenoid - Transmission Speed

F - 13

17

Diode - Harness AS

A-9

D

Solenoid - Travel Activation

G - 15

Diode - Stop Lamp

E-8

D

Secondary Steering Control

H - 14

11 4

Diode - Temp

E-6

D

Switch - AEC

B - 10

C

C - 11, B - 11

A

Switch - AEC Boom Cyl. Pressure

E - 15

20

Engine Pump Control Engine Speed Dial

C-2

C

Switch - AEC Implement Travel

F - 15

20

Flasher

F-7

C

Switch - AEC Stick Cyl. Pressure

E - 15

20

Fuse Block (A Black)

F - 10

D

Switch - AEC Swing Pressure

E - 15

11

Fuse Block (B Yellow)

F-9

D

Switch - Air Filter Clog

B - 15

15

Fuse Block (C Green)

E - 10

D

Switch - Air Horn

G-2

A

E-9

D

Switch - Aux. Hyd. (ccw rotation)

D-3

B

Fuse Block (D Red) Hour Meter

E-5

D

Switch - Aux. Hyd. (cw rotation)

C-5

C

Main Fuse

G-8

19

Switch - A/C

B - 11

C

Monitor Panel

C-2

C

Switch - A/C Pressure

E - 14

3

Motor - Air Conditioner Fan

E - 14

3

Switch - Backup

C - 11

C

Motor - Governor Actuator

B - 13

5

Switch - Beacon

B-5

C

Motor - Heater Fan

B-9

10

Switch - Brake Light

H-5

8

G - 13

11

Switch - Coolant Temperature

D - 13

21

Motor - Lower Wiper

E-1

7

Switch - Coolant Temp Cold Start

C - 13

19

Motor- Refueling Pump

H - 13

2

Switch - Creeper Speed

C-6

C

Motor - Starter

C - 14

25

Switch - Disconnect

H - 12

24

D - 13

26

Motor - Lower Washer

Motor - Secondary Steering

H - 12

4

Switch - Engine Oil Pressure

Motor - Upper Washer

G - 13

11

Switch - Forward/Reverse Travel Alarm (2)

E-2

A

F-2

Motor - Upper Wiper Radio

H - 6, G - 6

8

Switch - Front Flood Lamp

C-5

C

A C

Switch - Hammer

B-8

C

Switch - Hazard

B-4

C

Regulator - A/C Temperature

B - 10

Relay - A/C Clutch

D - 13

3

Switch - Head Lamp

D-5

C

Relay - A/C Fan

E - 13

D

Switch - Heater Fan

B - 10

C

Relay - Air Horn

E-7

21

Switch - Heavy Lift

C - 10

C

Relay - Brake

F-6

D

Switch - Horn/Turn/High Beam

G-3

A

Relay - Brake/Travel Cutoff

D-5

D

Switch - Hyd. Oil Filter Clog

E - 14

13

Relay - Glow Plug System

D-7

D

Switch - Hyd. Oil Low Temperature

E - 14

14

Relay - Interval Wiper

G-6

D

Switch - Hyd. Oil High Temperature

E - 14

14

Relay - Main Power

F-7

D

Switch - Key (Start)

C-7

C

Relay - Pilot Press Enable

F-7

D

Switch - Left Front Stabilizer Lockout

C-9

C

Relay - Power Mode

Related Electrical Service Manuals

Component Location

F-6

D

Switch - Left Rear Stabilizer Lockout

C-9

C

Relay - Start

C - 15

19

Switch - Low Brake Pressure

G-5

8

Relay - Stop Lamp Cutoff

E-7

D

Switch - Low Transmission Clutch Pressure

F - 13

17

Relay - Secondary Steering

G - 13

4

Switch - Lower Windshield

E-2

A

Relay - Secondary Steering

H - 13

4

Switch - Lower Wiper

C-7

C

Relay - Swing Brake Timer

G-5

D

Switch - One Touch Idle Down

C-6

C

Relay - Temperature

E-6

D

Switch - OSC Axle Lock

C-5

C

Relay - Transmission Speed

F-6

D

Switch - Overload Warning Device

A-5

C

Relay - Travel Alarm

F-5

D

Switch - Overload Warning Device

C-8

23

Resistor - Backup Main Pump PRV

E - 10

D

Switch - Parking Brake

B-5

C

Resistor - Backup Swing Pump PRV

E - 10

D

Switch - Pilot Control Lock

B-5

C

Resistor - Coolant Temperature

C - 13

5

Switch - Power Mode

C-6

C

Resistor - Glow Plug System

C - 14

20

Switch - Primary Steering Flow

G-4

8

Resistor - Heater Fan

B-9

10

Switch - Rear Flood Lamp

C-5

C

Resistor - Start/Stop

D - 13

5

Switch - Refueling Pump

E-5

D

Sender - Coolant Temperature

D - 13

21

Switch - Reverse Steer Proximity

B-5

9

Sender - Fuel Level

F - 14

12

Switch - Right Front Stabilizer Lockout

B-9

C

Sender - Hydraulic Oil High Temperature

E - 14

14

Switch - Right Rear Stabilizer Lockout

B-9

C

Sensor - Engine Speed

D - 15

18

Switch - Starting Pilot Pressure Enable

D-4

B

Solenoid - Aux. Hyd. (cw)

G - 15

C

Switch - Swing Brake

E-3

B

Solenoid - Aux. Hyd. (ccw)

G - 15

C

Switch - Swing Brake

E-7

D

Solenoid - A/C Clutch

D - 14

22

Switch - Transmission Speed

C-6

C

Solenoid - Blade Front

G-1

1

Switch - Travel Alarm Cancel

C-5

C

Solenoid - Blade Rear

H - 10

6

Switch - Travel Cutoff

F-5

D

Solenoid - Creeper Speed

F - 15

11

Switch - Travel Lock

B-6

C

Solenoid - Engine Start/Stop

D - 13

5

Switch - Travel Pedal

H-2

A

Solenoid - Engine Cold Start

C - 14

20

Switch - Upper Washer

B-8

A

Solenoid - Hammer

E - 13

20

Switch - Upper Windshield

E-2

A

Solenoid - Heavy Lift

F - 15

20

Switch - Upper Wiper

B-7

A

Solenoid - Implement Activation

G - 15

11

Travel Lock Magnet

H-2

A

G -1

1

Solenoid - Left Front Stabilizer Lockout

RENR4033 June 2000

21

16

19

25

5

22

26

15

18 14

9 23

13

20

1

6 17 11

C

12

3 7

D

10

A

8

24

2

4 B

M312 and M315 Excavators Electrical System Schematic M312: 6TL951-UP

M315: 7ML1647-UP

A 22

9

24 5 C

21

B

17 3

D

25

20

12

13 15

11 18

26

19 7

8

14 16 2

4

10

1

6

MACHINE HARNESS CONNECTOR AND COMPONENT LOCATIONS

©2000 Caterpillar All Rights Reserved

Printed in U.S.A.

Harness And Wire Electrical Schematic Symbols

Electrical Schematic Symbols And Definitions

Machine locations are repeated for components located close together.

A = Located Inside Of Cab

A

B = Located Inside Of RH Console

AA

C = Located Inside Of LH Console D = Located Around Relay Panel

T

Connector Location

Schematic Location

Machine Location

CONN 1

H - 14

2

CONN 2

D - 13

5

CONN 3

E - 13

3

CONN 4

G - 13

4

CONN 5

G - 12

4

CONN 6

G - 12

4

CONN 7

C - 12

26

CONN 8

C -11

26

CONN 9

D - 11

26

CONN 10

E - 11

26

CONN 11

F - 11

26

CONN 12

H - 10

6

CONN 13

G-1

1

Connector Number

Pressure Symbol

System Faults Detected by the Controller Error Message

Logged

Symptom Automatic engine control operation may be disturbed.

Yes

Main PRV Circuit

No

Main Pump has minimal power.

Low Battery Voltage

No

Reduced output current is possible.

Battery Voltage is below 17 DCV.

Brake Switch

Yes

Travel pedal control or Travel Mode may be disturbed.

Brake relay contacts are dirty.

No

Swing pump has minimal power.

Low Engine Speed

No

Reduction of hydraulic power.

Engine RPM is too low.

High Engine Speed

Yes

High engine lugging possible.

Engine RPM is too high.

Engine Spd. Dial Sig

Yes

Engine speed goes to current maximum allowed RPM.

Engine speed dial potentiometer has short circuit or open.

Heavy Lift Circuit

Yes

Heavy lift function is impossible.

Heavy lift solenoid circuit open, not installed, or shorted.

Heavy Lift Switch

Yes

Heavy lift function is possibly disturbed.

Heavy lift switch contacts are dirty.

Spd Chg w/o Press

Yes

Both pumps are out of regulation.

AEC Pressure switch open when the engine is loaded.

CONN 14

C - 10

C

Replace Control

Yes

Current Limiting is possible.

CONN 15

D - 10, 9, 8

26

Mode SW Short 1&3

Yes

Mode 1 is set.

Mode 1 and 3 signal lines are simultaneously grounded.

CONN 16

D-2

A

Mode SW Short 2&3

Yes

Mode 2 is set.

Mode 2 and 3 signal lines are simultaneously grounded.

Mode SW Short

Yes

Mode 1 is set.

Mode 1 and 2 signal lines are simultaneously grounded.

Mode SW Open

Yes

Mode 1 is set.

Mode switch is open or shorted.

Travel Lock Circuit

Yes

Travel pedal magnet does not function.

Travel Lock magnet is open or shorted.

Act Mot Pos Chgd

Yes

Wrong loads and speeds possible.

Injection pump worn or actuator linkage has changed.

RPM Setting Low

No

Low idle too low or Engine lug is too small.

or grounded circuit, low idle position is to low, or the Actuator linkage may be

Actual feedback voltage of the governor actuator is too low. Caused by an open loose.

High idle too high or Engine lug is too large.

Receptacle

Plug 2

Actual feedback voltage of the governor actuator is too high. Caused by the circuit being shorted to B+ or open, high idle position is to high, or the

Wire, Cable, or Harness Assembly Identification

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

No

Engine speed or engine lug is incorrect.

Defaults Loaded

Yes

Engine and pump controller is not adjusted.

Press w/o Spd. Chg

No

Engine speed reduction or automatic speed shifting does not function.

Travel Lock Switch

Yes

Control of the travel pedal magnet is possibly disturbed.

Difference between the engine and pump controllers output to the governor actuator and the feedback signal from the governor actuator motor is too large.

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

C

Part No.

Function

3E-6429

Primary Flow

5W-9972

Low Brake Pressure

116-4710

Hydraulic Oil High Temperature

119-3399

Coolant Temperature

119-3400

Hydraulic Oil Low Temperature

171-7570

Low Transmission Clutch Pressure

163-2084

AEC Swing Pressure Boom-Cyl Pressure Stick-Cyl Pressure

Actuate

Deactuate

Contact Position

4.0 grams MAX

1.5 grams MIN

Normally

Pin

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

(0.14 oz) 10132 kPa (1470 psi) 94 ºC 201 ºF 100 ºC 212 ºF

(0.05 oz) ----

Open

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

Normally Open

11 ºC

17 ºC

Normally

52 ºF

63 ºF

Open

2600 kPa (377 psi) 507 kPa (74 psi)

--

--

Normally Open Normally Open

Wire Color

Socket

200-BK-14

Wire Gauge

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.

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

T

Open Open

325-PK-14

Electrical Schematic Symbols And Definitions

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

Normally Normally

1

9X-1123

Circuit Number Identification

AEC pressure switch or wiring is defective.

Engine speed sensor or wiring is defective.

Pressure when the engine is stopped.

AA

2

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

No error if the default values are loaded. Delete the error.

Travel lock contacts are dirty.

A

A 325-PK-14

There is a defect in the governor actuator motor or the wiring harness.

Off Machine Switch Specification

Component Part Number

Single Wire Connector

actuator linkage may be loose.

RPM Setting Diff

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

Pin or Socket Number

Main pump solenoid circuit is open.

Main pump solenoid circuit is shorted to the frame, or the backup switch is on.

Swing PRV Circuit

No

Flow Symbol

Automatic engine control switch contacts are dirty.

Swing pump solenoid circuit may be open.

Swing pump solenoid circuit is shorted to frame or the backup switch is on

RPM Setting High

Level Symbol

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

Possible Causes

AEC Switch

The engine and pump electronic control was not calibrated correctly when manufactured.

CONN 17 D-1 1 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.

Temperature Symbol

1 2

1 2

1

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

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.

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

L28

L28

BK-6 BK BK

BK-00

L23 X

D 1 2 3

PU(3) RD(8) WH(15)

L18 W BK

L21

BK

CONN 5

L23 BK

30

1 2

MOTOR J

WASHER LOWER 7T-8890

+ D+ D

BK-00

U

U

START RELAY 3E-0075

D BK BK

C

RD-4(4)

1 2

D

TO FRAME

BK BK

BK GN(2)

BU(9) YL(5)

BU(15) GN(7) PU(9) RD(10) BU (8) GN(6) RD(11) BU (10) RD(33)

G

BK BK

GN(23)

L8

KK

GN(21) WH(17) BU(19) GN(9) YL(12) BR(7) RD(21) OR(9)

1 2

GN(22) T

1 2

BK

BK

L10

KK RD-12(3)

L1 L4

D RD-10(9)

CONN 7

L9 K BK-10

AIR FILTER CLOG SW 168-6625

G

G RD(22) BK (13) BR(2) WH(10) BK

BB3 123-6472 24V 2 GND 3 TXD 7 RXD 6

EE

A B C D E

WH BR GN YL SCHIELD

L8

TO CAB D

L14

BR/WH(2)

BR/WH(2) GN(2)

GOVERNOR ACTUATOR MOTOR 151-1032

L13

L9

02 05 06 07 03 04 01

L1 L11

L4

+

WH(4) GY(6) BK RD (26)

MOTOR -

L10

B RD(26) BK BK

PU(10) BK BK RD (24)

L5 L5 BK BK

TAIL LAMP 5W-2040

37 -19 22 30 31 50 48 38 39 44 45 51 47 02 35 36 01 40 42 12 41 15 46 24 -43 -03 04 -32 -53 18 -29 28

RD(11) BR(7) BU(8) YL(12) GN(9) GN(6) BU (9) YL(5) WH(17) GN(21) RD(21) OR(9) RD(10) PU(9) BU(13) RD(22) BR(2) WH(10) BK(13)

WH(13) YL(3) BR(5) PK(3)

WH(12)

RD(24) BR(6) WH(16) YL (17)

L STOP LAMP 9X-4493

GY(6)

WH(16) BR(6) WH(12) YL(17)

TO FRAME BASIC LAMP GP 116-9625

1

25A

L72

BU-10(2)

A

8

7,5A

7

15A

6

7,5A

5

7,5A

4

15A

3

7,5A

2

7,5A

1

7,5A

RD(5)

H

RD-10(8)

G

RD/YL(1) RD(33) F RD(10) RD/YL(14) RD/YL(7)

F E

L73

D

RD/YL(6)

C

RD/YL(5)

B

OR(12) GN(24) RD(28) F

A

RD-10(7)

8

7,5A

7

7,5A

6

7,5A

5

15A

4

7,5A

3

7,5A

2

20A

1

7,5A

L73

BK/PU(1) BK/PU(2) BK/GN(10) RD(4) RD(8) RD/YL(8) RD/YL(15) RD/YL(12) RD/YL(13 ) RD/YL(9) RD/YL(11) RD-12 RD(31) RD/YL(10)

L74

L38

L47

L44

RD(28) RD(29) BACKUP RESISTOR MAIN PUMP PRV 124-0329 (47 )

BK/GN(14) GN/BR(6) PU(9)

5 4

30 SWING BRAKE 117-4861

OR(10) WH(9)

3 2 1

BR(10)

A

87a

30

F

TEMP. 117-4861

87a

DIODE TEMP 123-3998

3

85

87

A

L50

L50

GLOW PLUG SYSTEM 157-0836

OR(6)

86

85

87

BK

30

RD-10(9)

L49

UPPER WIPER 122-2367

+ -

BK(12) GY(7)

H BK

C GY/BK(1)

RD(13) OR(12)

RD-10(10)

L64

BK/GN(7) BK/WH(3) BK/PU(2)

H

GN(29) GN/BR (2)

GN

BK/GN(10) YL

+

-

A BK

BU(5)

BK

BK GN(13)

WH(8)

L44

RD(14)

L78

BRAKE/ TRAVEL CUTOFF 85 117-4861

86 87

A

1

WH(14)

30

H

LOWER WINDSHIELD 137-7245

BK-14

BK-14

COMPRESSED AIR HORN 5W-9400

(CCW ROTATION) AUX HYD SW 113-2531

RD(7) BK

RD BK GY BU

GN/BR(2)

2 4 B

3

E

UPPER WINDSHIELD 122-2369

B

HOUR METER 120-5966

L49

1 2 3 5

DIODE BRAKE 120-5969

L50

SWING BRAKE SWITCH 113-2531

L77

LOWER WIPER 6C-9156

MOTOR G

PLUG 120-5967

PU(4)

B

D

A

L48

L12

H

TO CAB

L50

BK GN(13)

L44 L46 L48 L49

87a

L78

STARTING/ PILOT PRESS ENABLE SWITCH 117-3187

BK/YL/WH(1)

L46 L48

AIR SUSPENDED DRIVER SEAT

A

CONN 17 BK(1) BK

1 2

D

WH BK M

FLOOD LAMP AS. 120-6775

H

CONN 16 B L64

CONN 9

F

PU(9) BU(15) GN(7) RD(10) BU(8) WH(7) RD(33)

L85

L57

L58

L53

L60

L59

L61

L54

YL(5) BU(9)

L80 L63

L60

L62 L61

RD(11) GN(6) BU(10)

POWER MODE SW 5W-9372

L54 CONN 14 L83

E L65 L84

L60

08 07 02 06 01 05 03 04

PU(6) WH(12) OR(4) YL(17) BU(15) GN(7) BU(9) YL(5)

BU(9) YL(5) GN(7) WH(12) BU(15)

G

L66

BU(19)

E

L65

L67

PU(6) OR(4) YL(17) BU(15) WH(12) GN(7)

BACKUP SW 133-8327

1

HEAVY LIFT SW 5W-9372 5

RD(21)

E 10

LEFT REAR STABILIZER LOCKOUT SW 5W-9372 5

7 1

9

10 GY

BK

9

9

LEFT FRONT STABILIZER LOCKOUT SW 5W-9372 5

RD/YL(28) RD/YL(29)

7 1

RD/YL(5) RD/YL(27)

YL(9)

5

7

AEC SW 5W-9372

7

5

OR(9) YL (7)

10

E

7

BK RD(30) RD(33)

10

YL (8) BK

L3

9 GY

YL(13) BU(11) RD(20) BK (10) BK

YL(7)

BK

A3 B3 B4 B5

10

9

10

5

10

B

7 B 1

CREEPER SPEED SW 5W-9372

9

BK

B

B

9 BK

RD/YL(31) B 5 7 BK/GN(11) BK/WH(1) 1 BK/WH(4) TRANS SPEED 9 10 SWITCH 5W-9372

BK GY

9

1

L79

RIGHT FRONT STABILIZER LOCKOUT SW 5W-9372

7

BK(3)

5

1

C1 B1

10

9

10 GY

B

RD/YL(7)

1 B

9

GY

RD/YL(3)

BK

1

5

9

2 1 3

GY(14)

BK GY

B

10

L67

5

B

9

BK GY

L3

V

T 1 2

BK

1

B

GY

BK(6) L79

10

RD/YL(1) 1 BEACON SW 5W-9372 9

5

7

10

9

B 10

BK

HAZARD SW 5W-9351

B

9

BK

GN/BR(5) GN/BR(1) RD/YL(2) BK(7) WH(3) BK/GN(9) BK/GN(1)

6 8 2 3 5

GY

1

PARKING BRAKE SW 133-8327

TRAVEL ALARM CANCEL SW 8U-6357

7

2 E

9

YL(12) BK BK BU/YL(5) YL(10) GN/WH(1) WH(2) BU(4) GN(3) BR/WH(1) BU(2) RD(1) BK/GN(11) BK/WH(4) GN/BR(5) RD/YL(18) BK/GN(9) BK

RD/YL(6) REAR FLOOD LAMP SW 5W-9372

5

BK

8

6

2

10

D

GY

B

BK/GN(2)

7

5

8

4

9

WH RD BK BR

RESISTOR 122-2373

C

B

A

10

BK

E A B C

MONITOR PANEL 175-7204

BK(8) GY GY

1 7 BK/GN/RD(3)

GY PILOT CONTROL LOCK SW 5W-9372

L35

1

3 2

BR

BK

ENGINE SPEED DIAL 141-6258

D

BK GY(8)

D

BK

L2

1 2 3

RD/YL(12) BU/YL(3) BK

BR BK BU

+V SIGNAL GROUND

TURN SIGNAL LAMP AS. 116-9626

L68

REVERSE STEER PROX. SW 151-1953

L1

B

HARNESS AS DIODE 142-9472

OVERLOAD WARNING DEVICE SWITCH 118-5501

BK YL(1)

RD(7) BK(1) RD/YL(11) GN/BR (3) GN/BR (4) GN/BU (4) GN/WH(4) GY(4) WH (4) RD/YL(12) BU/YL(3) YL(1)

TO FRAME

L2

FUSE "B" YELLOW

FUSE "A" BLACK

FUSE "D" RED

FUSE "C" GREEN

IDENT

PART-NO.

LOC

A B C D E F G H J K L M N P R T U V W X Y Z AA BB CC DD EE FF GG HH JJ KK

179-9077 179-9056 179-9069 174-9111 179-9044 179-9048 179-9042 179-9082 180-8137 150-4464 140-1059 120-6919 129-3454 121-0876 121-0877 121-0879 122-2360 145-9202 179-9050 122-2364 121-2972 121-2973 122-2365 122-2366 129-4673 8X-9618 123-6475 126-6801 145-9203 128-1041 128-1042 167-9039

C-5 C-5 E-6 C-6 C-6 C-6 B-6 C-1 E-7 B-6 F-8 C-1 F-7 E-7 F-7 F-7 C-8 D-7 E-7 E-7 E-5 E-1 E-1 E-5 C-8 E-1 C-7 F-7 C-7 C-7 C-7 C-7

COLOR

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

BK

BLACK

BR

BROWN

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

BU

BLUE

STARTING CIRCUIT.

GN

GREEN

MONITOR CIRCUIT.

GY

GRAY

PANEL LAMP CIRCUIT.

OR

ORANGE

PK

PINK

ABBREV

D

L1

D

BK WH(4)

YL(12)

L68

HEATER FAN 173-7421

POSITION LAMP 5W-2033

31

BK

L55

TO FRAME

HEAD LAMP AS. 2U-4800

56B

GN/BU(4) 56A GN/WH(4) 58 GY(4)

L69

BK BK BK

L79

RD

C

L55

MOTOR

A

RD/YL(11) GN/BR(3) GN/BR(4)

L35

8

4

10

TRAVEL LOCK SWITCH 8U-6357 BK BK

L69

L69

7

B

9

WH-14 BK-14

FORWARD HORN 153-6559

2 10

+ D

D 04 03 02 01

V

L1

1

GY(13)

BK

L67

A/C TEMP REGULATOR 3E-5464

RD(36) GN(9) BU(10) BK

GY GY/BK(1)

BU (11) RD(20) BK (10) BK YL(13)

7 1

UPPER WIPER SW 180-2649

GY

BK GY(1)

9

1

BK/YL(1)

3

9

10

GY

L67

10

WH(1) B

B

5

10

3

BK

2

BK

BK TO FRAME

PLUG 120-5967

L68

L62

GY

BR(11) OR(2)

8 1

7

BK/GN/RD(7)

UPPER WASHER SW 2U-6635

7

5

BK

GY(12)

STICK TRAVEL LAMP AS. 8U-4742

BK

RD(5)

BK (1) FRONT FLOOD LAMP SW 5W-5867

8

6

WH(6) YL(18)

HAMMER SWITCH 8U-7284

BU/WH(1)

B PK(13)

TO FRAME BK-14

GY(8) BK

GY

B

7

5

PU(1)

L63

9

BK

OSC AXLE LOCK SW 133-8327

BK GY

5

B

RD BK GY BU

YL

PU(2)

BK/WH(3) GN(8)

7 2 4

5

BK/GN(7)

BK

RIGHT REAR STABILIZER LOCKOUT SW 5W-9372

B

1

9

YL(15) YL(16) YL(13)

02 01

BU(19) BK

LOWER WIPER SW 5W-9744

1

B

B

GY

HEATER FAN SW 111-3805

BK TO FRAME

ONE TOUCH IDLE DOWN 113-2531

WH(20)

A/C SW 5W-9372

10

OR(7)

17

10

OVERLOAD WARNING DEVICE SWITCH 5W-9372

BK

YL (13)

1

30

OR(6) RD(2)

L53

BK

B

3 (CW ROTATION) AUX HYD SW 113-2531

BK/WH(5)

6

2

RD/YL(17) GY

L55

GY

5

9

BK/GN(3)

BK GY

B

B

GY

GY(1) RD/YL(7) RD/YL(5) BK(2) BK(3) BK(4) BK(5)

PU(7)

GY

GY RD(2)

9

BK

E

GN

RD(36) RD(30) BK

1 10

10

B 19

HEAD LAMP SW 5w-5867

B

1 10

50A

2

E

RD(3)

L59 L55

E

7

8

6

RD/YL(30)

3

BK

L80

L57

7

5

L80

B

6

2

RD/YL(30)

1

PARKING LIGHTS RHS

7,5

1

ELECTRICAL FUEL LIFT PUMP

25

1

BACKUP

7,5

1

STOP LIGHT

7,5

2

PARKING LIGHTS LHS

7,5

2

WARNING LIGHT

7,5

2

POWER MODE SELECTION; AEC; SWING BRAKE

7,5

2

AIR CONDITION

20

15

3

INDIVIDUAL STABILIZERS

7,5

3

HORN; BUZZER (OVERLOAD); 1/3 PRESSURE DROP

7,5

00

70

PU

PURPLE

7,5

0

50

RD

RED

GROUND CIRCUIT.

BLUE LIGHT (REVERSE STEERING); TRAVEL ALARM

WH

WHITE

ENGINE PUMP CONTROL CIRCUIT.

ARM REST SWITCH; SWING GEAR; MISCELLANEOUSFUNCTION; RELAY TRAVEL CUT OFF; PARK BRAKE; TRANSMISSION SPEED; CREEPER SPEED; CAB-RISER OSC AXLE LOCK;

15

4

16

YL

YELLOW

6

10

8

6

WIRES THAT HAVE BATTERY VOLTAGE WHEN THE KEY SWITCH IS ON AND THE LEFT HAND HYDRAULIC CONSOLE IS LATCHED IN THE DOWN POSITION.

6

SECONDARY STEERING

7,5

10

4

7

WINDSHIELD WIPER UPPER AND PUMP

7,5

12

2.5

8

WINDSHIELD WIPER LOWER AND PUMP

7,5

14

1.5

16

1

3

INSTRUMENT LIGHTING

7,5

3

STARTER KEY SWITCH; MAIN POWER-RELAY; LIGHT

AWG

4

LOW BEAM RHS

7,5

4

POTENTIAL TRANSFORMER 24V ==> 12V (RADIO)

7,5

4

WORKING LIGHTS

15

4

5

LOW BEAM LHS

7,5

5

START/STOP SOLENOID; COLD START SYSTEM

7,5

5

HAMMER BLOW FREQUENCY ADJUST.; FLOW CONTROL

7,5

5

6

HIGH BEAM RHS

7,5

6

COMPRESSOR AIR HORN

6

15

ELECTRONICS

7,5

7

HIGH BEAM LHS

7,5

7

HEATER FAN

15

7

ROTATING BEACON

15

8

CONTROL LIGHTS; TURN SIGNAL

7,5

8

CIGARETTE LIGHTER; PLUG; DOME LIGHT

7,5

8

AIR SUSPENDED DRIVER SEAT; PRIORITY

7,5

MM*2

HEATER AND AIR CONDITIONER CIRCUIT.

START AID CIRCUIT. ALL DASHED LINES ARE ATTACHMENTS.

COMPONENTS ARE SHOWN INSTALLED ON A FULLY OPERABLE MACHINE WITH THE KEY AND ENGINE OFF. UNLESS OTHERWISE SPECIFIED: ALL WIRE IS 16 GAUGE

14

13

12

11

10

9

8

7

6

5

4

3

2

B

TURN SIGNAL AND WIPER/WASHER CIRCUIT.

THIS SCHEMATIC IS FOR THE M312 / M315 EXCAVATOR (179-9028-01)

15

D

B

PU(7) OR(1) BK

L70

BK/YL/WH(2)

L54

7

B KEY SWITCH 117-9508

YL(9)

BK

L66

5

BK

15

BU(9) YL(5) BR/WH(3) BR/BK(2) GY YL(12) WH(17) GN(21) BR(7) BU(19) RD(33)

12V 24V GND

YL(9)

L64

L63

L62

L46

L4

L63 CONVERTER 24V-12V 120-6566

L64

RD(33) BU(19) WH(17) GN(21) BR(7)

B

GN(10)

B

A

YL(12) OR(9) RD(21) BK GN(9) BU(10)

H

BU(2)

5

POSITION LAMP 5W-2033

BK-14

MOTOR G

GN(5) GN(3) BU(7) BU(4) RD(9) RD(1)

2

AIR HORN 5W-5883 30 RD(17) RD(16) BK

A 86

31

GY/BK(2)

BR(1)

L44 L46 L48

CONN 15

CIGAR LIGHTER 5W-9628

BK

L52

A 1

RD(7)

L47

YL(14) BK

L52

RD(11)

56B

GN/BU(3) 56A GN/WH(3) 58 GY(3)

H

HEAD LAMP AS. 2U-4800

BU-10 (2)

RD/YL(16) BK

RD-10(9)

L40

BK

RD(13) RD(6) 30 STOP LAMP CUTOFF 60s 174-8208

87

A RD(12)

BU(20) GN/BU(1) BK/GN(5) BR(10) RD(6) BR(1)

L87

A

L41

PU(4)

31

15

C

85

86 87

BK BK

BK/RD(2) GN(13)

TO FRAME

REFUELING PUMP SWITCH 8U-3011

L46 WH(2)

BK

A

L38

L46

L45

RD/YL(14) A

D

L45

POWER MODE 117-4861

BU-10 (1)

BU(9)

TURN SIGNAL LAMP AS. 116-9626

BK

A

85

BK(8)

OR(12)

30 87a F

87

DOME LIGHT 5W-2041

YL(2)

BK BK

87a

BK YL(14)

GN(28)

TRAVEL CUTOFF 117-4861

L77

GN(29)

GN/BU(1)

30

F C

H

FLOOD-LAMP 120-6776

85

86 87

BK(18)

H

GN(16)

WH(8)

A 86

L12

BACKUP RESISTOR SWING PUMP PRV 124-0329 (47 )

F

OR(3) PU(3) WH(1) BK(4) BK(5) BK(2) BK(3) YL (1) BK(1) BR/WH(2) BR/BK(1) BR/WH(1) BR/BK(2) GN(2)

RD-10(9)

BK/GN(3) GN/BR(2)

L86

F

30 PILOT PRESS ENABLE 117-4861

87a

DIODE STOP LAMP 123-5635 L43

BK/GN/RD(4)

L28

RD GY

85

86 87

RD/YL(15)

L75

BK/WH(5)

OR(13)

A

A

L40

F

BK/GN/RD(4) WH(9)

BR

WH(14) OR(10) A 87a

85

86 87

SPEAKER 5W-8937

YL(4)

BK/GN/RD(2) BK/GN/RD(1) BK

A

BR BR/RD

BK/WH(6)

TRANS SPEED 117-4861

87a F

BU(20)

1 2 3 5

BU(10) BU(8)

30

GROUND

BK TO BOX

85

WH(7)

GROUND

PK(7)

L39

BU(15) GN(7) PU(9)

GN(29) BK/GN(2) BU/YL(2)

30

DIODE AEC AUX-HYD 120-5969

BK RD(14) 86 87

L48

+ BATTERY

C 31

BK

PU(9) GN/BR(6) BK/GN(14)

L87

L43 L47

L85

F

BK AEC AUX-HYD 87a 117-4861

L39

L86

85

86 87

L43

L4

L1

BK(7)

BK

FLASHER 8U-9152

BK

SPEAKER SPEAKER SPEAKER SPEAKER

BK

B

BK-10

BK WH(4)

7,5A

FUSE BLOCK 1480081 D RED A

G

TURN LAMP GP L 116-9624

A

RD-10(1)

2

RD(3)

OUT (LAMP)

BK

H BK BK /YL (1) ANTENNA 5W-9391

31

C

RD(9) BU (7) GN(5) BU (5)

ONE TOUCH IDLE DOWN NC MODE TEMP. (MODE 0) GOVERNOR CONTR-KL.3 MAGNET TRAVEL SPEED + MODE-3 LAMP + SW-TRAVEL SPEED CONTR BRAKE LIGHT MODE 2 MODE 1 GOVERNOR CONTR-KL.1 GOVERNOR CONTR-KL.2 SWITCH HLC SWITCH-CONSOLE AEC + 24 VOLT SW-PRESS SENSORS AEC SW-TRAVEL PEDAL (M.3) + 24 VOLT TXD RXD RS-232-RETURN GOV ACT MOTOR + GOV POS FEEDBACK RTN GOV POS FEEDBACK SIG GOV POS FEEDBACK PWR NC GOV ACT MOTOR NC GROUND GROUND NC SOLENOID HLC + NC ENGINE SPEED SENSOR + ENGINE SPEED SENSOR NC SOLENOID SWING PUMP + SOLENOID MAIN PUMP +

GY(3) GY(5) GY(4) GY(6)

15A

A

49a C2 49

BK

ANTENNA ANTENNA

53

E

RD(7)

07 12 10 11 06 01 02 05 08 09 04 03

B

3

A BK/GN(1) BK/GN(4) GN/BR(1)

L50

BK

L75

31B 53A

1

7,5A

GY(1)

7,5A

L71

RD(18) RD(19) OR(1)

A

FLOOD LAMP 120-6776

31

7,5A

C

4

BRAKE 117-4861

87a

H

REAR WORK LAMP AS. 120-6776

+BATT.

53

F L42

K

TURN LAMP 5W-2040

2

RD-10(2)

5

7,5A

RD (2) GN/BR(1) BK/GN(1) BK/GN/RD(2) BK/GN/RD(1)

2.5A PU(7) RD GY

31B 53A

G

RD-10(5)

CONTROL-ENG/PUMP: M312 = 150-4462 M315 = 149-7606

BU(19)

L13 GLOW PLUG SYSTEM RESISTOR 7W-1251

GLOW PLUG 035-8059 KK

H

RD(36)

BK

7,5A

L72

GN/BU(4)

FUSE BLOCK 148-0080 C GREEN A RD-10(6)

KK TO FRAME

3

D

RD-10(4) RD-10(3) RD-10(8) RD-10(7)

WH(4)

04 11 09 10 01 02 03 12 05 06 07 08

L84

KK

COOLANT TEMP. RESISTOR 140-2238

COOLANT TEMP COLD START SW 126-5983

ENGINE COLD START SOLENOID ???-????

L40

A

GY(2)

L41

BK

BK-4

TO ENGINE

D

L86

CONN 8

W

D-

G

WH(15)

HH

JJ

BK-00

RD-6(3)

CC

W

B

7,5A

E

RD-10(3)

BK

BK

L12

GN(6)

30

BR/RD

H H

BK GN/WH(1) BK/GN(9) GN/BR(5) YL(12) BK WH(2)

STARTER 109-2361

WH(7)

START/STOP RESISTOR 110-6158

KK BU(17)

C

4

RD(16)

TO BOX

L51

BK

86

85

BU/WH(1)

+BATTERY ALARM PRESS.SW SHUTDN.SW GROUND

1 2 3 4 5 6 7

MOTOR

RD-6(2)

ENGINE START/STOP SOLENOID ALTERNATOR ???-????

109-2362

GN/BU(2)

5

7,5A

6

15A

RD(12)

BK

BK BK BK BK BK

1 2 3 4

GND HIGH BEAM TURN SIGNAL TURN SIGNAL POWER MODE III + POWER MODE III PARKING BRAKE

D

70A

RD-00

N

L39

D

F

GN/WH (1) GN/WH (4) GN/BU(3)

A

RD/YL(13) BK/GN(8) BK/WH(2) BK(6)

F

OVERLOAD BRAKE LOW PRESS + 24 VOLT AIR FILTER HYD FILTER SUPPL STEERING SUPPL STEERING

MTR BAT

FUSE ALTERNATOR 123-8838

RD-6(2)

D BU(5)

S

BK

RD-4 (1)

G

E

6

7,5A

L32

BK 85

86 87

A

7 6 5 4 3 2 1

RD-4(1) RD-4(4)

D TO FRAME

D

F

7

15A

YL(2) RD/YL(16) RD/YL(3)

RD(15)

RD-8(1) RD-10(10) A

BEACON 116-9627

SPEAKER 5W-8937

YL(9) BU(1) RD/YL(9) BR/WH(2) BR/BK(1) PU(3) RD(4)

COOLANT TEMP SWITCH 119-3399 KK GN(5) T D

L83

CONN 2

GN/WH(2)

G

GN/WH (3)

8

7,5A

RD-8(2)

RADIO 165-5934

L68

ENGINE SPEED SENSOR 116-6680

COOLANT TEMP SENDER 119-3401 KK BR/BK(2) T

L37

H

RD-10(4)

FF

TRAVEL ALARM RELAY 122-2371

A

BU(4) RD/YL(18) BU/YL(5) BK/GN(11) GN(3) YL(10) BK/WH(4)

WH(16) BR(6)

1 2

BK

RD(19)

BK BK

L33

7

7,5A

RD/YL(2)

MAIN-POWER 157-0836 30 87

L52

1 2 3 4 5 6 7

D

G

8

7,5A

L36

RD-8(1)

HYD OIL HIGH TEMP + 24 VOLT POWER MODE II TRANS SPEED II ENG COOL HIGH TEMP POWER MODE I TRANS SPEED I

BK

H

RD-12 RD(31) GY(5) GY(6) RD/YL(13) BU-10(2) RD(10) RD/YL(16) RD(33) RD/YL(14) RD/YL(15) RD(16) OR(12) RD/YL(3) RD(4) BK/GN(10) BK/PU(1) RD/YL(1) GY(2) RD/YL(5) RD/YL(6) RD/YL(7) RD/YL(8) RD(5) BK (7) RD(3) RD/YL(9) YL(2) GY(1) GN/WH(1) RD/YL(2) OR(1) RD (18) RD (19) RD/YL(11) RD(8) GY(4) GN/WH(4) GN/BU(4) RD/YL(12) BK/PU(2) GN/WH(3) GN/BU(3) GY(3) RD/YL(10)

60A

RD/YL(16) RD(10) RD(33) BU-10 (2)

WH(5) PK(12) BK/WH(2) YL(4) BK/YL/WH(1)

L70

L1 D

GN BK

G

BK GY(6) WH(4) RD(26)

RD(7) BK (1) RD/YL(11) GN/BR (3) GN/BR (4) GN/BU (4) GN/WH(4) GY (4) WH(4) RD/YL(12) BU/YL(3) YL(1)

L16

BK

GG

BR/WH(2) GN(2)

BK

GY(10) BK

ENGINE OIL PRESS SW 7W-1238

03 04 05 02 06 01

L

1 2

GN(4)

RD-14(1)

L38

YL(2) RD/YL(3) RD/YL(16) RD(16) OR(1) RD (3) BK (7) BU-10(2) RD (18) RD (19) RD/YL(2) GN/WH(1) GN/WH(3) GN/WH(4) GN/BU(3) GN/BU(4) GY(1) GY(2) GY(3) GY(4) GY(5) GY(6) RD(5) RD/YL(14) RD(10) RD/YL(1) RD/YL(5) RD/YL(6) OR(12) RD/YL(7) RD(33) RD(31) BK/PU(1) BK/PU(2) BK/GN(10) RD(4) RD(8) RD/YL(8) RD/YL(9) RD/YL(10) RD/YL(11) RD/YL(12) RD/YL(13) RD-12 RD/YL(15)

FUSE BLOCK 148-0079 B YELLOW A

L51

L51

RD(1)

RD(24) BR(6) WH(16)

L11

1 2

GN BK

L13

A RD-8(3)

FUSE BLOCK 148-0078 A BLACK A

L42

RD/YL(11) GN/BU(4) GN/WH(4) GY(4) RD(8) RD/YL(12) RD(19) RD(18)

RD-8(3) A

L37

MAIN FUSE 124-0016

FF

KL.30

BR/WH(3) BR/BK(2) OR(3)

ARC SUPPRESSOR 106-8704

GN BK

L4

GN(4) BR/WH(1) BU(5) BR/BK (2) GN(5) RD(18) RD(19)

L36

BK/WH(5) BU/WH(1) BK(12) GY(7) BK/GN(10) GN(8) BK/PU(1) GY/BK (1) BK-14 YL(2) PU(7) BK/YL (1)

RD(31)

D

1 2

BR BU BB

09 10 03 02 11 07 12 01 08 06 04 05

YL(13) YL(15) YL(16)

87b

GG GN-14 GN-14

G

BLADE FRONT SOLENOID 8U-6424

YL(2) BK/PU(1) GY(7) BK/YL (1) BK/WH(5) BU/WH(1) GN(8) GY/BK(1) BK(12)

GN(4)

A/C CLUTCH SOLENOID 3E-1906

BK

L14

30

V

L16

D 1 2

A/C CLUTCH RELAY 123-6527

86

85 87

RIGHT FRONT STABILIZER LOCKOUT SOL 8U-6424

BU-10 (1) BK/GN(8)

BK/GN(10)

V OR(8) YL(16)

RD(19) GN(4) BR/WH(1) BU(5) GN(5) BR/BK(2) RD(18)

CONN 3 V

L

D

L89

GN(4)

1 2

BU(7) RD(9) BR/BK(1) OR(3)

V

YL(15)

BU RD(26) WH(4) GY(6) BK GY(9)

LAMP LICENCE PLATE 116-9623

L18

L30

L36 L36

D

GN/BR(3) GN/BR(4) GN(4) BU/YL(3)

04 05 21 38 27 01 40 03 06 07 08 23 30 32 13 34 02 33 24 25 26 14 22 36 37 35 31 39 29 28 20 19 10 09 18 17 16 15 12 11

L30

L33

BR/WH(1) BU(2)

87b

V

BK-12 A/C PRESS SWITCH 114-5333 GN

L15

L83

L17

RD-12

30

BK-12 BR-12

AA

02 01 04 03

NC FUEL LEVEL COOL TEMP HYD OIL TEMP

PK(11) PK(12)

2 1

Z

CONN 13

BK

BR-12

GN/BR(4) BR(1)

BR BU BR BU

C

1 2 3 4 5 6 7

MOTOR

02 01 04 03

BR DK-BU GN/YL BK

L34

GND NC NC ENGINE OIL PRESS ALTERNATOR NC (+ 24 VOLT) HYD OIL LOW TEMP

87

AIR HORN SW 5W-9376

CONN 13

7 6 5 4 3 2 1

85

LEFT FRONT STABILIZER LOCKOUT SOL 8U-6424

STOP LAMP CUTOFF/ OSCILLATING AXLE BLOCKED SWITCH 174-8209

WH(17) GN(21) BR(7)

C 1 4 2

T

YL(13) A/C FAN RELAY 86 123-6527

BK

DIODE 140-6617

54 R

BK TO PLATFORM

BK/GN/RD(9)

AIR CONDITIONER FAN 145-7724

D

DIODE 8U-8045

AEC SWING SW PRESS 163-2084

BK(2) BK(3) BK(4) BK(5) PU(3) RD(8)

WH(1) BK

BK

3 4

GN/BR(1) BK(7) WH(3) BK/GN(1) BK(8) RD(1) BU(2) BR/WH(1) GN(3) RD/YL(2) BU(4) WH(2) GN/WH(1) YL(10) BU/YL(5) OR(3) BU(1) RD/YL(9) BR/WH(2) BR/BK(1) PU(3) RD(4) YL(9)

GN(27)

OR(4) PU(6) YL(17) WH(12)

RD(9) BR/BK(1)

BK-12 TO FRAME

2

TO FRAME

C

L61

RD-00

HYD OIL LOW-TEMP SWITCH 119-3400

1

0 TO CAB BU(20) PU(19)

Z

GN(2) RD/YL (8) BK/GN/RD(1) BK/GN/RD(8) GN(10)

PK(9) PK(10)

DD

53e 53c I

BU(9) PK(12)

GY(2) BK (1) RD/YL (6) BK(6) RD/YL (1) BK/GN/RD(3)

E

L82

L17

T

L32

GN(28)

53e 53c I

YL(18)

31 31b 15

BK

L70

4 2

H 56A

BU/WH(1) BK/YL (1)

C 1

AEC STICK-CYL SW PRESS 163-2084

L12

L33

31 31b 15

BK GY(7) GY(15) BU(21) WH(20)

L32

CONN 10 L19

BU(7) OR(3)

BR(10) BR(11) PK(13)

BR(10) BR(11) PK(13) BR(1) GN/BR(4) PU(19) BU(20)

L77

TO FRAME

WH(15)

GN(26)

L34

PK(13) BR(11)

HYD OIL HIGH TEMP SW & SENDER 116-4710 D T

L24

WH(1) BK

BK BK BK

BK BK

BK

GN/BR YL WH/BK BK/WH BK/GN BK/WH/GN WH BR

WH(7) BU(8) BU(10) GN(6) RD(10) RD(33)

D BR/BK(1)

01 08 06 05 04 03 07 02

BK(18)

SWING BRAKE TIMER RELAY 155-4574

RD(7) RD(9) BU (7) GN(5)

D

PK(8)

71A 56B 56 L

C

WH(3) BK/GN(4) GN/WH(2)

W

INTERVAL WIPER RELAY 155-4574

BU/YL(2) PU(2) BK/WH(1) BK/GN/RD(2) BK/GN(3) BK/GN(2)

HAMMER SOLENOID 8U-6424

L10

C 1

BK BK

L27

BK/GN/RD (5)

L20

BK

1 2

C

BK/GN/RD(6)

BK

BK

HYD OIL FILTER CLOG SW 116-8514

WH(7) BU(13) GN/BR(3) GN/BU(2) BK/YL/WH(2)

BK

RD(1) BU(4) GN(3) WH(2) YL(10) BU/YL(5) BK(6) BU(2)

GN(24) PK(7)

Z

HORN/TURN HIGH BEAM SW 111-1975 PRIMARY STEERING FLOW SW 3E-6429

RD(25) BK

BK G

BU/YL(3)

TERMINAL 5W-3624

YL(4) BK/YL/WH(1) BK/WH(2) WH(5) PK(12) GN/WH(2) GN/BU(2) GN(24) BK/PU(2) GN/WH(3) GN/BU(3) GY(3) RD/YL(10) BU(20) PK(7) BK/GN(4) BK/GN(5) RD(6) BR(1) BR(10) GN/BU(1) BK(8) WH(3) GN/BR(2) BK/GN(3) PU(2) PK(13) BR(11) BU(1) BR/WH(3) BK/GN/RD(3) WH(6) BK/WH(1) BK/YL/WH(2) BK/GN(7) BK/WH(3) GN/BR(4) GN/BR(3) BU/YL(3) GN(4)

30 10 21 31 39 12 11 27 36 25 24 23 05 33 40 16 29 06 34 02 09 14 15 19 20 28 01 26 04 08 18 32 38 13 35 37 22 17 07 03

GN(24) PK(7) PK(12) PU(2) GN/BU (1) BR/WH(3) BK/GN (5) BK/WH(1) YL(4) WH(6) WH(5) BK/YL/WH(2) BK/WH(3) BK/GN(7) PK(13) BR(11) GN(4)

C

GN(25)

4 2

L21

C

BK

AEC BOOM-CYL SW PRESS 163-2084

LOW TRANSMISSION CLUTCH PRESS SW 171-7570

C

BK(4) BK(3) BK(2) BK(1)

4 3 2 1

YL(10) BU/YL(5)

TRANSMISSION SPEED SOLENOID 8U-6424

BR/WH (3)

3 2

L89

WH(15)

PK(12) FUEL LEVEL SENDER 112-7178

AEC IMPLEMENT TRAVEL SWITCH C 1 117-0651

L22

C PARKING BRAKE SOLENOID 8U-6424

DK-BU BK

OR(2)

RD(24) BK

RD(18)

F

L20

GN(24) PK(7) PK(12) BR/WH(3) BK/GN (5) BK/WH (1) YL(4)

G HEAVY LIFT SOLENOID 8U-6424

L18 L19

RD-00

C PU(19) BK

L34

L31

CONN 11 A

GN/BR (3) GN/BR (4) BR(10) WH(3) BK/GN (4) GN/WH(2) BU/YL (3) GN/BU(2) BR(1) BK(8) GN/BU(3) GN/WH(3) GY(3) BK/PU(2) BK/WH(2) RD/YL(10) RD(6) BU(1) BU(20) GN/BR(2) BK/GN(3) BK/GN/RD(3) BK/YL/WH(1)

GN/BU(1) PU(2)

OSC AXLE LOCK SOLENOID 172-7029

BR GN/YL BK DK-BU

RD(16) RD/YL(15) RD/YL(14)

C

C PU(2) BK

Y

LEFT REAR STABILIZER LOCKOUT SOL. 8U-6424

L30

SWIVEL 121-2974

GN(10)

L21

TO FRAME

CREEPER SPEED SOLENOID 172-7029

BK

RD/YL (10) RD(6) BU(1) RD(25)

L29

A7 A6 A5 A4 A3 A2 A1

RD-6(4)

L82

PU(6) BK

LOW BRAKE PRESS SW 5W-9972

BU(13) BU/YL(3)

TO FRAME

BU(1)

BK(12) GN(8)

BK

BK BK

C GN/YL

L24

SWING PUMP PRV SOLENOID 143-2363 G

GN/BU(1) BK

RD(6)

TRAVEL PEDAL SW 136-9421

BK WH

REVERSE STER LIGHT 164-8366

CONN 6

BK

C

C

BK/WH(2)

L29

BU-10(1) BK/GN(8) BK(2) BK(3) BK(4) BK(5) BK-6 GY(5) GY(6) RD (12) RD-12 RD(31) RD-6(4) BK(9) WH(4)

RD/YL(10)

FORWARD/REVERSE TRAVEL ALARM SW (QNTY 2) 9D-7032

L68

BK BK BK

SECONDARY STER RELAY 117-4861

BR DK-BU GN/YL BK

L31

L59

87a

WH

SWING BRAKE SOLENOID 172-7029

C

BK

OR(4) BK

BK/YL/WH(1) BK

J

WASHER UPPER 7T-8890

TO FRAME

85

86 87

G

C

TRAVEL ACTIVATION SOLENOID 172-7029

WH

Y 04 03 02 01

BK

C

BK-6 BK

MAIN PUMP PRV SOLENOID 143-2363

G

1 2

MOTOR BK

L22

AA BR BU BR BU

BK/WH(7)

BK(2) BK(3) BK(4) BK(5) BK

BK

BK/GN(3) GN/BR(2)

BK-4

CONN 12

01 02 03 04 05 06

BK(1) BK(2) BK(3) BK(4) GN/YL

OR(5)

RD(8) WH(15) PU(3)

D A1 A2 A3 A4 A5 A6 A7

BK/GN(5)

C

C

L19

TRAVEL LOCK MAGNET 116-1146

BK WH BU(13)

BRAKE LIGHT SW 8U-2158

C

BK/GN(2)

W

CONN 4 BK/GN(3) GN/BR(2) BK/GN/RD(3) BK/YL/WH(1)

C

T

TO UNDCRG

04 03 02 01

WH(20) GY(15) BU(21) YL(18) WH(6)

SECONDARY STEERING CONTROL 132-6640

YL

W

GN(14)

W

AUX HYD (CW ROTATION) SOLENOID 8U-9137

L89

MOTOR YL

Y

BR BU

01 02

BK

BR

PK(7)

BK BK

BB RIGHT REAR STABILIZER LOCKOUT SOL. 8U-6424

L27

H

BK

BK CONN 12

BK/GN(4)

WH(15)

L89

118-9168

BK G

L58

W

SEC STER RELAY 3E-0075 W 1 2 GN(15)

SEC STER MOTOR

BK

YL(1) WH(1)

RD(8) RD(32)

X

RD-4

BLADE REAR SOLENOID 8U-6424

WH(1) BK (1) BK (2) BK (3) BK (4) YL (1) BK (5) BR/WH(1) BR/BK (1) BR/WH(2) BR/BK (2) GN(2) PU(3) OR(3) BU(1) BR/WH(3) BK/GN/RD(3) WH(6) BK/WH(1) BR(11) PK(13) BK/GN(7) BK/WH(3) BK/YL/WH(2) PU(2) GN/BR(2) BK/GN(3) BK (8) WH(3) OR (1) RD/YL(9) RD/YL(8) RD(4) BK/GN(10) BK/PU(1) RD/YL(5) RD/YL(6) RD/YL(7) RD/YL(1) RD(5) BK (7) RD(3) RD/YL(3) YL(2) GY(1) GN/WH (1) RD/YL(2) GY(2) WH(20) GY(15) YL(18) BU(21) GY(7) OR(6) RD(2) GN/BR (1) BK/GN (1) BK/GN/RD(2) BK/GN/RD(1) BU/YL(2) GN(29) BK/GN(2) RD(1) BU(4) YL(10) GN(3) BU/YL(5) BK(6) WH(2) BU(2)

BK BK RD(25)

L31

11 05 06 07 08 10 09 14 12 16 18 17 56 13 01 20 49 70 48 57 65 66 67 68 21 46 47 53 54 30 60 43 44 52 02 40 41 42 33 58 36 31 38 55 34 50 37 35 69 39 25 23 22 15 27 29 04 26 24 62 59 45 03 51 64 63 61 28 32 19

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

BU BK PU OR RD YL BR WH PK GN GR

L34

BR/BK (2) BR/WH(3) RD/YL(3) RD/YL (5) BK (2) RD/YL(7) BK (3) BK (4) BK (5) GY(1) YL (1) WH(1) OR(6) RD(2) RD(3) BU/YL(2) PU(2) BK/WH(1) BK/GN/RD (2) BK/GN(2) BK/GN(3) WH(20) WH(6) BK/GN (7) BK/WH(3) BU(21) GY(15) YL(18) PK(13) BR(11) BK/YL/WH(2) GY(2) BK (1) RD/YL(1) BK(6) RD/YL (6) BK/GN/RD(3) RD(5) YL(10) BU/YL(5) BR/WH(2) GN/WH(1) PU(3) RD(1) GN/BR(1) BK(7) WH(2) BK/GN (1) BK(8) OR(3) WH(3) BU(1) BR/BK(1) RD(4) BR/WH (1) GN(3) BU(2) RD/YL (2) RD/YL (9) BU(4) GY(7) BK/PU(1) BK/GN(10) YL(2) OR(1) GN(29) GN/BR(2) GN(2) RD/YL(8) BK/GN/RD(1)

WH(4)

BK/GN/RD(3) BK

BU(13) PU(19) BK/YL/WH(2) BK/WH(3) BK/GN(7) PK(13) BR(11) RD-12 RD(31) WH(7) BK(2) BK(3) BK(4) BK(5) GN/BR(3) GN/BR(4) BR(10) WH(3) BK/GN (4) GN/WH(2) BU/YL (3) GN/BU (2) BR(1) BK(8) GN/BU(3) GN/WH(3) GY(3) BK/PU(2) BK/WH(2) RD/YL(10) RD(6) BU(1) BU(20)

L34 L30

RD-8(2)

GY (9) BK RD (26) GY (6)

IMPLEMENT ACTIVATION SOLENOID 172-7029

FF

TO FRAME STEER SW GROUND STEER SW GOV.SWITCH BATTERY + KEY SWITCH DUMP VALVE R TERM (W) SHUT D SOL MAGN SWITCH EMS UNUSED

A

AUX HYD (CCW ROTATION) SOLENOID 8U-9137

DISCONNECT SWITCH 7N-0718 P

12V BATTERY (QNTY 2) 3T-5760

TO BOX

BK/GN(8) BK

BASIC LAMP GP 116-9625

NEG

L29 L28

GN/YL

POS

BK

GY(5) GY(9)

L15

T

NEG

A

TRAVEL ALARM 3T-1815

TAIL LAMP 5W-2040

POS

L26

BK(8) GN/BU(3) GN/WH(3) GY(3) BK/GN(7) BK/WH(3) BK/PU(2) BU(20) PU(19) WH(7) BU(13) GN/BR(3) PK(13) BK/YL/WH(2) WH(3) BR(11) GN/WH(2) BU/YL(3) BR(10) BK/GN(4) GN/BU(2) BR(1) GN/BR(4) BK/WH(2) RD/YL (10) RD(6) BU(1) RD(25)

KL.15

STOP LAMP 9X-4493

L26

W

BK-10

R

BK(9) WH(4)

RD(12) RD(26) BK BK

MOTOR

BK-00

WH(3) BK(8)

L

R

BK

H

RD-00 RD-00

BU-10(1)

RD(12) GY(6) GY(5) WH(4) BK (9) BK/GN (8) BU-10(1) RD-6(4) BK-6 RD (25)

N

FF

BK

BK(9) BK BK

RD (12) GY(6) GY(5) WH(4) BK(9) BK BK/GN(8) BU-10(1)

WH(6) WH(5) BK/YL/WH(2) BK/WH(3) BK/GN (7) PK(13) BR(11) PU(19)

TURN LAMP 5W-2040

01 02 03 04 05 06

BK (9) BK RD(12) GY(5) GY(6) WH(4)

RD-4

TURN LAMP GP 116-9624 L

L27

RD-6(4)

REFUELING PUMP 5W-8633

RD-10(9)

CONN 1 L A

1

A