A - COMPONENTS IN OPER COMPARTMENT - FRONT DASH B - COMPONENTS IN OPER COMPARTMENT - RIGHT CONSOLE C - COMPONENTS IN OPER COMPARTMENT - LEFT CONSOLE E - RELAY PANEL Schematic Location E-9
Component Alarm - Backup
6
14
E
14
C
1
21
26
13 7
6
17
18
12 4
8 15
16
22 13
D
12
A
11
2
4
8
10
24 10 25 B 1
5
7
3
11
5 19
16 9
2
Machine Location 1
Alarm - Fault
C
Alternator
B-1
2
Batteries
F-4
3
E-7
E
101
RD
BAT
410
WH
OPR MON FAULT ALARM
102
BU
HD LMP
411
PK
OPR MON MASTER FAULT LAMP
105
BR
KEY SW
413
BR
OPR MON FUEL PRESS.
Switch - Backup Alarm
E-6
13
108
BU
AUX CKT
415
GN
OPR MON TEST SW
Switch - Blower A/C
B-3
A
109
OR
ALT OUTPUT (+)TERM.
424
GY
OPR MON POWER TRAIN TEMP
Switch - Blower Heater
A-3
A
112
PU
MAIN POWER RELAY OUTPUT
426
BR
OPR MON POWER TRAIN OIL FILTER
14
113
OR
OPR MON PANEL VMIS B+ SWITCHED
441
OR
ENG COOLANT TEMP GAGE
GN
WARNING HORN (FORWARD)
442
GY
HYD SYSTEM TEMP GAGE
443
YL
POWER TRAIN TEMP GAGE
Solenoid - Start Aid
F-4
Switch - Disconnect
F-6
E
Switch - Dome Lamp
A-7
D
Gauge - Engine Coolant Temp
B-4
A
Switch - Engine Coolant Temp (EMS)
C-2
15
116
BR
AUX CKT
Gauge - Hydraulic Oil Temp
A-4
A
Switch - Engine Coolant Temp (S Aid)
D-2
16
121
YL
BACKUP ALARM TO LAMP
Gauge - Power Train Temp
B-4
A
Switch - Engine Oil Pressure (EMS)
C-2
17
123
WH
AUX CKT
500
BR
WIPER - FRONT (PARK)
124
GN
A/C
501
GN
WIPER - FRONT (LO)
502
OR
WIPER - FRONT (HI)
Accessory Circuits
Horns - Forward
F-1
4
Switch - Engine Oil Pressure (S Aid)
C-2
18
Meter - Service
B-5
A
Switch - Flood Lamp
B-6
A
Monitor - Operator (EMS)
D-4
A
Switch - Forward Horn
B-5
B
200
BK
MAIN CHASSIS
503
BR
WIPER - REAR (PARK)
Motor - Blower
A-2
A
Switch - Front & Dash Lamp
B-6
A
201
BK
OPR MON PANEL VMIS CMS
504
YL
WIPER - REAR (LO)
Motor - Front Wiper
C-4
D
Switch - Front Wiper
B-7
D
203
BK
CHASSIS DIAGNOSTIC
505
BU
WIPER - REAR (HI)
Motor - Left Wiper
D-8
D
Switch - Fuel Pressure (EMS)
C-2
19
207
BK
STARTER DIAGNOSTIC
510
YL
WASHER - PRIMER
Motor - Rear Wiper
C-8
D
Switch - Hydraulic Oil Temp (EMS)
A-6
20
513
OR
A/C COMPRESSOR/REFRIGERANT PRESS. SW
Motor - Right Wiper
B-6
D
Switch - Key Start
C-5
A
301
BU
STARTER NO.1 SOL
515
GY
BLOWER MOTOR (HI)
Motor - Starter
A-2
5
Switch - Left Wiper
B-7
D
302
OR
STARTER NO.1 RESISTOR TO DIAGNOSTIC
516
GN
BLOWER MOTOR (MEDIUM)
Motor - Washer
A-8
6
Switch - Neutral/Start Diff Steer
D-7
21
304
WH
STARTER RELAY NO.1 OUTPUT
517
BU
BLOWER MOTOR (LO)
Motors - Blower
B-3
A
Switch- Neutral/Start Direct Drive
B-9
22
Relay - Main
F-8
E
Switch - Operator Monitor Test
D-5
A
GN
STARTER RELAY COIL TO NEUT START SW OR KEY SW
521
YL
A/C SW TO REFRIGERANT SW
Relay - Start
F-6
E
Switch - Power Train Filter Pressure
A-6
23
308
YL
MAIN POWER RELAY COIL
522
WH
A/C CLUTCH TO THERMOSTAT SW
Resistor - Blower Motor Speed A/C
A-3
A
Switch - Power Train Filter Temp (EMS)
C-2
24
310
PU
START AID SW TO START AID SOL
523
BR
WIPER - LEFT (PARK)
Resistor - Blower Motor Speed Heater
A-2
A
Switch - Power Train Oil Temp (EMS)
B-2
25
311
WH
START AID SOL TO TEMP SW
524
BU
WIPER - LEFT (LO)
Resistor - Starter To Diagnostic Conn
A-2
7
Switch - Rear Wiper
B-8
D
321
BR
BCKP ALARM LAMP TRAVEL ALARM
525
GY
WIPER - LEFT (HI)
Sender - Engine Coolant Temp
B-2
8
Switch - Refrigerant A/C
F-2
26
322
GY
WARNING HORN (FORWARD)
526
YL
WIPER - RIGHT (PARK)
Sender - Hydraulic Oil Temp
A-6
Switch - Right Wiper
B-8
Monitoring Circuits
527
GN
WIPER - RIGHT (LO)
Sender - Power Train Oil Temp
B-2
Switch - Start Aid
C-6
528
PK
WIPER - RIGHT (HI)
9 10
B-2
Function
11
D A
B-3
Switch - Thermostat A/C
A
Off Machine Switch Specification Actuate
Deactuate
Contact Position
101 .7°C MIN (215°F MIN)
N.C.
9G1300
Hydraulic Oil Temp. (EMS)
110.0 ± 2.8°C (230 ± 5°F)
9G3341
Power Train Oil Temp. (Filter) (EMS)
51.7 ± 2.8°C (125 ± 5°F)
43.0°C MIN (110°F MIN)
N.C.
7N9785
Engine Coolant Temp. (EMS)
107.2 ± 2.8°C (225 ± 5°F)
91.0°C MIN (1 96°F MIN)
N.C.
8N1693
Engine Coolant Temp. (Start Aid)
37.8 ± 2.8°C (100 ± 5°F)
26.7°C MIN (80°F MIN)
N.C.
3T0190
Hydraulic Oil Temperature (EMS)
87.78 ± 2.8°C (190 ± 5°F)
79.44°C MIN (175°F MIN)
N.C.
3T5825
Power Train Oil Temp. (EMS)
129.4 ± 2.8°C (265 ± 5°F)
118.3°C MIN (245°F MIN)
N.C.
MAX HYD 31 O3kPa MAX BYPASS SPOOL
FORCE 66.7 N MAX ACT 8.9 N
N.O.
3T9343
Power Train Filter Bypass Pressure (EMS)
7T0988
Engine Oil Pressure (EMS) Engine Oil Pressure (S. Meter)
62 ± 21 kPa (9.0 ± 3.0 psi)
38 ± 21 kPa (5.0 ± 3.0 psi)
N.O.
9W3187
Fuel Pressure (EMS)
93 ± 21kPa (13.5 ± 3.0 psi)
69 ± 21kPa (10.0 ± 3.0 psi)
N.C.
N.O. = NORMALLY OPEN 3
Description Monitoring Circuits (Continued)
Breaker - Blower Motor
Part No.
5
Wire Color
Machine Location 12
15
C10353P2
Wire Number
Description
114
Solenoid - A/C Clutch
9
Wire Description
Wire Color
Schematic Location F-2
Component
23
20
Wire Number
Power Circuits
Component Location
D-8
Breaker - Alternator
3
SENR4236-01 January 1993
Ground Circuits
Basic Machine Circuits
D6H & D6H Series II Tractors Electrical System 4RC2445-5499 6FC692-5499 8FC4000-5499 1KD4000-5499 2KD4000-5499 3ED4000-5499 3ZF1-5499 4YF1-5499
306
5HF1-5499 6CF1-5499 2TG525-5499 3YG1-5499 4GG1-5499 4LG935-5499 1FJ482-5499 2DK1-5499
400
GN
SERVICE METER SW
403
GN
ALTERNATOR (R)TERM.
404
YL
OPR MON HYD OIL TEMP
600
BR
DASH LAMP BASIC
405
GY
OPR MON OIL PRESS. (LO SETTING)
608
GN
FLOOD LAMP - REAR
406
PU
OPR MON COOLANT TEMP
609
YL
FLOOD LAMP - SIDE
610
OR
HEAD LAMP BASIC
Lighting Circuits
For D6H Series II, see the included additional illustrations Printed in U.S.A.
©1993 Caterpillar All Rights Reserved
NC. = NORMALLY CLOSED
13
16
TO KEY START SWITCH
9
23
4
A - 5G9497 C - 7T8326
D-6
4
14
8 CONTACTS
5
G - 7T9222 H - 7T9218
B-8
6
A - 5G9497 B - 6T6074
D-3
21 7 CONTACTS
22 15
1 7
6
8
2 16
19
24
10
4 CONTACTS
25
17 7
5
18 26
12 11
306-GN
RR
TO START RELAY
NEUTRAL START SW 9W1581
306-GN
306-GN A
E-3
8
A - 5G9497 C - 7T8326
D-5
9
A - 5G9497 E - 3W4902
A-6
10
A - 5G9497 M - 3T7147
B-4
11
A - 5G9497 N - 9W1816
C-3
12
A - 5G9497 W - 6Y3416
B-3
13
G - 7T9222 Front Wiper Motor
C-4
14
G - 7T9222 Left Wiper Motor
D-7
15
G - 7T9222 Right Wiper Motor
B-6
16
J - 3T6373 Rear Wiper Motor
C-8
WW
C50911P1
307-OR
D6H Series II With Power Shift And Clutch/Brake Steering Harness A is Part No. 8E0841. Harness RR is Part No. 3W9383.
306-GN
D6H Series II With Power Shift And Differential Steering Harness A is Part No. 8E0841. Harness UU is Part No. 8E3007. Harness WW is Part No. 8E1538.
TO START RELAY
A A
T
BK/PK BK/PK
1 2
200-BK 321-BR
TO FRAME GROUND TO BACK UP ALARM
NEUTRAL START SW 9P9520
BACKUP ALARM SW 7T8744
306-GN
306-GN T
LEFT CONSOLE
C10352P2 C50910P1
REAR OF TRANSMISSION D6H Series II With Direct Drive And Clutch/Brake Steering Harness A is Part No. 8E0841. Harness T is Part No. 3T8636.
321-BR
WW
WW
C509910P1 TO KEY START SWITCH
WW
NEUTRAL START SW 9N1750
1 2 UU
A
WW
BACKUP ALARM SW 9N1750
LEFT CONSOLE
REAR OF TRANSMISSION
T
HARNESS CONNECTOR AND COMPONENT LOCATIONS
W
A UU
UU
A - 5G9497 B - 6T6074
7
TO KEY START SWITCH
BACK UP ALARM SW 7T8744
306-GN
9 CONTACTS
1 2
B-7
DIFF STEER TILLER CONTROL
306-GN
6
13
G - 7T9222 H - 7T9218
1 2
3
1
3
306-GN
4 10
20 9
10 CONTACTS
TO BACK UP ALARM
RR
RR
TO FRAME GROUND
306-GN
2 8
D-4
200-BK 321-BR
1 2
15
A - 5G9497 Operator Monitor (EMS)
1 2
BK/PK BK/PK
A
307-OR
14
2 11
A
REAR OF TRANSMISSION A
306-GN
12
F-7
1 2
20 CONTACTS
A - 5G9497 Diagnostic Connector
TO START RELAY
Schematic Location
306-GN
1
Harness And/Or Components
1 2
Ident.
307-OR
Connector
1 2
Connector Location
200-BK 321-BR
A 1 2
200-BK 321-BR
TO FRAME GROUND TO BACK UP ALARM