637E POWER TRAIN ELECTRICAL SCHEMATIC

Wire Description
Wire
Number
Wire
Color
Description
Wire
Number
Wire
Color
Description
Power Circuits
Basic Machine Circuits (Continued)
101 RD BATTERY 313 GY
STARTER NO. 2 TO DIAGNOSTIC/RESISTOR
TO DIAGNOSTIC
102 BU HEAD LAMP 314 PU STARTER RELAY NO. 2 OUTPUT
103 YL DOME / DASH LAMP/ PARK, TAIL LAMP 321 BR BACKUP ALARM / LAMP
105 BR KEY SWITCH 322 GY WARNING HORN (FORWARD)
106 WH MAIN POWER RELAY / INPUT 323 WH FUEL TRANSFER PUMP POWER
107 WH ENGINE SHUT DOWN 324 BU DIFFERENTIAL LOCKUP SOLENOID
108 BU MISC WIPER, DOME LAMP, CIGAR LIGHTER 325 PK FUEL PUMP RELAY OIL PRESS. SWITCH
109 OR ALTERNATOR 326 PU KEY SWITCH “C” TERMINAL
110 GN WINDSHIELD WIPER SWITCH (RIGHT) 327 PK SHUTDOWN SOLENOID
111 YL WINDSHIELD WIPER SWITCH (LEFT) 328 RD SHUTDOWN MODULE "OFF”
112 PU MAIN POWER RELAY / OUTPUT Monitoring Circuits
113 OR OPERATOR MONITOR PANEL 400 GN SERVICE METER SWITCH
114 GN WARNING HORN (FORWARD) 403 GN ALTERNATOR (R) TERMINAL
115 PK FLOOD LAMP (FRONT) 404 YL OPERATOR MON PANEL HYDRAULIC OIL TEMP
116 BR FLOOD LAMP (REAR) 405 GY OPERATOR MON PANEL OIL PRESSURE
117 YL FLOOD LAMP (SIDE) 406 PU
OPERATOR MON PANEL COOLANT
TEMPERATURE
118 GY WINDSHIELD WIPER SWITCH (FRONT) 407 PK
OPERATOR MON PANEL CONV / RETARDER OIL
TEMP
119 PK WINDSHIELD WIPER SWITCH (REAR) 408 WH OPERATOR MON PANEL BRAKE PRESS. (AIR)
120 YL CONVERTER (24 V to 12 V) 409 OR OPERATOR MON PANEL NEUTRAL
121 YL BACKUP ALARM/LAMP/TRAVEL ALARM TIMER 410 WH OPERATOR MON PANEL FAULT ALARM
122 BU AIR DRYER 411 PK OPERATOR MON PANEL MASTER FAULT LAMP
123 WH
GAGES (SERVICEMETER, TORQUE
CONV SOLENOID)
412 BU OPERATOR MON PANEL COOLANT FLOW
124 GN AIR CONDITIONER 413 BR OPERATOR MON PANEL FUEL PRESSURE
125 OR FUEL TRANSFER PUMP 414 PK OPERATOR MON PANEL LOW FUEL
126 PK TRANSMISSION CONTROL 415 GN OPERATOR MON PANEL TEST SWITCH
127 OR CAB FLOOD LAMP 416 OR SECONDARY STEERING SWITCH
128 PK KICKOUT SOLENOID SWITCH 417 GY PRIMARY STEERING SWITCH
129 BU CIGAR LIGHTER 418 YL
OPERATOR MON PANEL OIL PRESSURE
(HIGH SETTING)
130 GN STOP LAMP 419 YL OPERATOR MON PANEL PARKING BRAKE
131 BR FIRE CONTROL-OPERATOR WARNING 420 OR
OPERATOR MON PANEL FUEL FILTER/LOW
ACCUM PRESS.
132 PK ANTISPIN CONTROL 421 BU
OPERATOR MON PANEL FAULT LAMP
133 OR
PROGRAMMED ELECTRONIC ENG
CONT SOLENOID
422 YL OPERATOR MON WARNING HORN (SCRAPER)
134 PK
PROGRAMMED ELECTRONIC ENG
CONT SOLENOID
423 GY
OPERATOR MON PANEL TEST SWITCH
136 GN SUPPLEMENTAL STEERING 424 GY
OPERATOR MON PANEL POWER TRAIN
TEMPERATURE
137 RD STEERING MOTOR INDICATOR 425 PK
OPERATOR MON PANEL POWER TRAIN OIL
LEVEL
138 GN AUTOMATIC LUBE PUMP (TRUCK) 426 BR
OPERATOR MON PANEL POWER TRAIN OIL
FILTER
141 PK AUXILIARY HEATER 427 GN
OPERATOR MON PANEL POWER TRAIN OIL
FILTER JUMPER
Ground Circuits 428 OR
OPERATOR MON PANEL TRANSMISSION OIL
TEMP
200 BK MAIN CHASSIS 429 YL
OPERATOR MON PANEL BRAKE OIL
TEMPERATURE
201 BK OPERATOR MONITOR PANEL 431 GN
OPERATOR MON PANEL LOW TRANSFER
PUMP PRESS.
202 BK TRANSMISSION CONTROL 432 PK
OPERATOR MON PANEL BRAKE PRESSURE
(OIL)
203 BK CHASSIS DIAGNOSTIC 433 BU
OPERATOR MON PANEL BRAKE PRESS. (OIL)
JUMPER
204 BK OPERATOR MONITOR PANEL (SCRAPER) 434 BU
OPERATOR MON PANEL POWER TRAIN TEMP
JUMPER
205 BK INSTRUMENT 435 YL
OPERATOR MON PANEL POWER TRAIN TEMP
JUMPER
206 BK BATTERY SIDE OF DISCONNECT 436 OR
OPERATOR MON PANEL POWER TRAIN OIL
FILTER JUMPER
207 BK STARTER DIAGNOSITC 437 BR
OPERATOR MON PANEL FUEL LEVEL TO FUEL
FILTER JUMPER
212 BK ANTISPIN CODING PIN 16 438 YL
OPERATOR MON PANEL COOLANT TEMP
JUMPER
213 BK ANTISPIN CODING PIN 17 440 BR AIR PRESS. GAUGE
214 BK ANTISPIN CODING PIN 18 441 OR ENGINE COOLANT TEMP GAUGE
215 BK ANTISPIN CODING PIN 19 442 GY HYDRAULIC SYSTEM TEMP GAUGE
216 BK ANTISPIN CODING PIN 20 443 YL POWER TRAIN TEMP GAUGE
217 BK TRANSMISSION CODING PIN 17 444 BU
CONV / RETARDER OIL TEMP GAUGE
218 BK TRANSMISSION CODING PIN 18 445 GN
CONV / RETARDER OIL TEMP GAUGE
219 BK TRANSMISSION CODING PIN 19 446 PU BRAKE OIL TEMPERATURE GAUGE
226 BK OPERATOR MON PANEL SET POINT SELECT 449 BU SPEEDOMETER SENDER (SIGNAL)
227 BK TRANSMISSION CODING PIN 37 450 YL TACHOMETER SENDER (+)
231 BK TRANSMISSION SW 451 BR TACHOMETER SENDER (-)
236 BK TRANSMISSION CODING PIN 36 452 PU TORQUE CONVERTER
241 BK OPERATOR MON PANEL TIME DELAY PIN 3 453 PK SECONDARY STEERING FAULT LAMP
242 BK OPERATOR MON PANEL TIME DELAY PIN 4 454 GN RETARDER INDICATOR LAMP
243 BK OPERATOR MON PANEL TIME DELAY PIN 5 455 YL CONVERTER TEMP SWITCH TO TIME DELAY
244 BK OPERATOR MON PANEL TIME DELAY PIN 6
Basic Machine Circuits
301 BU STARTER NO. 1 SOLENOID TO RESISTOR
302 OR
STARTER NO. 1 TO DIAGNOSTIC/RESISTOR
TO DIAGNOSTIC
304 WH STARTER RELAY NO. 1 OUTPUT
306 GN
STARTER RELAY COIL/NEUTRAL START
SWITCH
308 YL MAIN POWER RELAY COIL
310 PU ETHER SWITCH TO ETHER SOLENOID
311 WH ETHER SOLENOID TO TEMPERATURE SWITCH
312 PK STARTER NO. 2 SOLENOID TO RESISTOR
Wire Description
Wire
Number
Wire
Color
Description
Wire
Number
Wire
Color
Description
Accessory Circuits Control Circuits
500 BR WINDSHIELD WIPER - FRONT (PARK) 710 GN
TRANSMISSION SPEED PICKUP
SIGNAL
501 GN WINDSHIELD WIPER - FRONT (LOW) 711 BR TRANSMISSION LEVER CODE 1
502 OR WINDSHIELD WIPER - FRONT (HIGH) 712 WH TRANSMISSION LEVER CODE 2
503 BR WINDSHIELD WIPER - REAR (PARK) 713 OR TRANSMISSION LEVER CODE 3
504 YL WINDSHIELD WIPER - REAR (LOW) 714 YL TRANSMISSION LEVER CODE 4
505 BU WINDSHIELD WIPER - REAR (HIGH) 715 GN TRANSMISSION LEVER CODE 5
506 PU WINDSHIELD WASHER FRONT 716 BU TRANSMISSION LEVER CODE 6
507 WH WINDSHIELD WASHER REAR 720 PU TRANSMISSION BRAKE SWITCH
510 YL WINDSHIELD WASHER-PRIMER 721 BR TRANSMISSION GEAR CODE 1
513 OR AIR CONDITIONER COMPRESSOR 722 WH TRANSMISSION GEAR CODE 2
514 PU AIR CONDITIONER CONDENSOR MOTOR 723 OR TRANSMISSION GEAR CODE 3
515 GY BLOWER MOTOR (HIGH) 724 YL TRANSMISSION GEAR CODE 4
516 GN BLOWER MOTOR (MEDIUM) 725 GN TRANSMISSION GEAR CODE 5
517 BU BLOWER MOTOR (LOW) 726 BU TRANSMISSION GEAR CODE 6
519 PK THERMOSTAT TO DRYER PRESSURE SWITCH 727 GN STEERING MOTOR RELAY
520 WH
OPERATOR AIR CONDITIONER SWITCH TO
THERMOSTAT
728 BU
SUPPLEMENTAL STEERING CONTROL
SWITCH
521 YL AIR COND SW TO RFGT SW 733 BR SWITCHING GEAR CODE 1 FRONT
522 WH AIR COND COMPR TO THERMO SW 734 WH SWITCHING GEAR CODE 2 FRONT
523 BR WINDSHIELD WIPER-LEFT (PARK) 735 OR SWITCHING GEAR CODE 3 FRONT
524 BU WINDSHIELD WIPER-LEFT (LOW) 736 YL SWITCHING GEAR CODE 4 FRONT
525 GY WINDSHIELD WIPER-LEFT (HIGH) 737 GN SWITCHING GEAR CODE 5 FRONT
526 YL WINDSHIELD WIPER-RIGHT (PARK) 738 BR SWITCHING GEAR CODE 1 REAR
527 GN WINDSHIELD WIPER-RIGHT (LOW) 739 WH SWITCHING GEAR CODE 2 REAR
528 PK WINDSHIELD WIPER-RIGHT (HIGH) 740 OR SWITCHING GEAR CODE 3 REAR
529 WH WINDSHIELD WASHER-LEFT 741 YL SWITCHING GEAR CODE 4 REAR
530 OR WINDSHIELD WASHER-RIGHT 742 GN SWITCHING GEAR CODE 5 REAR
531 WH FIRE WARNING HORN 743 PU SWITCHING NEUTRAL / RUN SWITCH
532 WH FIRE WARNING LAMP 744 BU SWITCHING UP SOLENOID
533 RD HEAT SENSOR/TEST SWITCH 745 GY SWITCHING DOWN SOLENOID
534 WH HEAT SENSOR/TEST SWITCH 746 PK
SWITCHING SYNCHRONIZE
SOLENOID
535 BU TRAVEL ALARM TIMER PRESS SWITCH 747 WH
SWITCHING NO SYNCHRONIZE
SOLENOID
536 OR TRAVEL ALARM TIMER MANUAL OVERRIDE 756 WH
TRANSMISSION LOCKUP CLUTCH
SOLENOID
537 GR TURN SIGNAL SWITCH TO FLASHER 761 GY LIFT KICKOUT SOLENOID SWITCH
538 BR HAZARD INDICATOR 762 YL
BUCKET POSITIONER SOLENOID
SWITCH
539 BU TURN SIGNAL INDICATOR BASIC / RIGHT 763 BU TORQUE CONVERTER SOLENOID
540 WH TURN SIGNAL INDICATOR LEFT 764 PU
SUPPLEMENTAL STEERING
CONTROL SWITCH (MOTOR GRADER)
Lighting Circuits 765 OR APRON SOLENOID (SCRAPER)
600 BR DASH BASIC 767 WH ANTISPIN PICKUP POWER
601 GY DASH HIGH 768 OR ANTISPIN PICKUP TRANSMISSION
602 WH DOME 769 BU ANTISPIN PICKUP LEFT
603 PK ROTARY BEACON 770 GN ANTISPIN PICKUP RIGHT
604 OR STOP 771 PU ANTISPIN SERVICE BRAKE SWITCH
605 YL TURN LEFT 772 BR ANTISPIN RETARDER SWITCH
606 GY TURN RIGHT 773 GY ANTISPIN SERVOVALVE
607 PK FLOOD FRONT 774 YL ANTISPIN SOLENOID - LEFT
608 GN FLOOD REAR 775 BR ANTISPIN SOLENOID - RIGHT
609 YL FLOOD SIDE
610 OR HEAD LAMP BASIC
611 PU HEAD LAMP HIGH
612 GY BACKUP
613 PK LICENSE PLATE
614 PU PARK/TAIL/DASH
615 YL CAB FLOOD/ROPS
616 BU BUCKET FLOOD
617 BR TAIL / POSITION LAMP-LEFT (ROADING PACKAGE)
618 YL TAIL/POSITION LAMP-RIGHT (ROADING PACKAGE)
619 GR HEAD LAMP LOW
622 PU FLOOD LAMP 3 WAY SWITCH JUMPER
623 BU FLOOD LAMP 3 WAY SWITCH JUMPER
624 YL FLOODLAMP BOWL
625 BK COURTESY LAMP
Control Circuits
702 OR TRANSMISSION BRAKE SWITCH JUMPER
703 BU TRANSMISSION UP SOLENOID
704 GY TRANSMISSION DOWN SOLENOID
705 PK TRANSMISSION LOCKUP CLUTCH SOL BASIC
706 BR TRANSMISSION RETARDER SWITCH
707 PU TRANSMISSION BED RAISE SWITCH
708 YL TRANSMISSION HOLD SWITCH
709 OR TRANSMISSION PICKUP POWER
For 637E Wheel Tractor-Scraper Equiped With
Electronic Powershift Transmission Control System For
ICM (Individual Clutch Modulation) Type Transmission
FORM NO. SENR4159
FOR USE IN SERVICE MANUAL:
637E WHEEL TRACTOR-SCRAPER,
SENR4155.
637E Wheel Tractor-Scraper
Power Train Electrical System
1FB1-UP
7CB1-UP
1HB1-UP 1JB1-UP 1LB1-UP
SENR4159 Printed in U.S.A. (04/85)
3
4
5
6
8
9
10
11
1
2
7
20 PIN CONNECTOR
(J) 5T1569 HARNESS AS.
(L) 6G8087 HARNESS AS.
20 PIN CONNECTOR
(L) 6G8087 HARNESS AS.
SCRAPPER TRANSMISSION SWITCHING CONTROL
AB
D
AB
D
AB
D
LOCKUP
SOLENOID
9P0222
SOLENOID
9P0222
DOWNSHIFT
SOLENOID
9P0222
UPSHIFT
AB ABAB
SOLENOID
9P0222
SOLENOID
9P0222
DOWNSHIFT
SOLENOID
9P0222
UPSHIFT SYNC
L L L
+ BATTERY 1
2GROUND
FRONT GR 1
FRONT GR 2
FRONT GR 3
FRONT GR 4
FRONT GR 5
HOLD SWITCH
D
31
32
33
34
35
8
28
29
30
GND VERIFY
LEVER 1
LEVER 2
LEVER 3
LEVER 4
LEVER 5
16
11
12
13
14
15
708-YL
202-BK
126-PK
202-BK
202-BK
716-BU
711-BR
712-WH
713-OR
714-YL
715-GN
716-BU-18
711-BR-18
712-WH-18
713-OR-18
714-YL-18
715-GN-18
202-BK-18
6
1
2
3
4
5
9
409-OR-18409-OR 7
GND VERIFY
LEVER 1
LEVER 2
LEVER 3
LEVER 4
LEVER 5
NEUTRAL
GROUND
1
3
4
5
8
9
2
10
6
7
D WW WW
HOLD SWITCH
9G2795
37
17
18
19
36
D W
9
37
14 10
EMS PANEL PIN 9
SHIFT LEVER SWITCH
9G8204
TRANSMISSION
10 A
FUSE 3K8782
112-PU-10
24 V SOURCE
MAIN RELAY
3T0376
126-PK
202-BK
733-BR
734-WH
735-OR
736-YL
737-GN
202-BK 202-BK-18 GROUND
D
10
10
721-BR
722-WH
723-OR
724-YL
725-GN
726-BU
A
B
C
E
F
H
G
721-BR-18
722-WH-18
723-OR-18
724-YL-18
725-GN-18
726-BU-18
V V
8
7
6
3
2
1
10
4
5
9
GEAR 1
GEAR 2
GEAR 3
GEAR 4
GEAR 5
GND VERIFY
TRANSMISSION SWITCH
(TRACTOR)
7T3419
GEAR 1
GEAR 2
GEAR 3
GEAR 4
GEAR 5
GND VERIFY
21
22
23
24
25
26
709-OR
710-GN
10 V
XMSN SPEED
6
7
20
27
9
10
UP SOL
DOWN SOL
LKUP SOL
3
4
5
703-BU
704-GY
705-PK
202-BK
37
TRANSMISSION
CONTROL
(TRACTOR)
9W0009
4
5
9
202-BK
V
SIGNAL
GROUND
TRANSMISSION
SPEED SENDER
6T2156
D
TRANSMISSION SWITCH
(SCRAPER)
9G1813
GEAR 1
GEAR 2
GEAR 3
GEAR 4
GEAR 5
GROUND
SYNC LAMP
NEU/RUN SWITCH
17
13
1
2
3
4
5
6
7
8
9
10
11
12
+ BATTERY
GROUND
FRONT GR 1
FRONT GR 2
FRONT GR 3
FRONT GR 4
FRONT GR 5
REAR GR 1
REAR GR 2
REAR GR 3
REAR GR 4
REAR GR 5
18
19
20
14
15
16
UP SOL
DOWN SOL
SYNC SOL
202-BK-18
A
B
C
E
F
G
738-BR
739-WH
740-OR
741-YL
742-GN
202-BK
747-WH
743-PU
126-PK
202-BK
733-BR
734-WH
735-OR
736-YL
737-GN
U L
10
L
738-BR-18
739-WH-18
740-OR-18
741-YL-18
742-GN-18
SWITCHING CONTROL
(SCRAPER)
TRANSMISSION
9G2637
20
744-BU
745-GY
746-PK
6
5
4
2
1
7
3
7
U
17
13
1
2
3
4
5
6
7
LJ
20
17
13
1
2
3
4
5
6
7
20
17
13
1
2
3
4
5
6
7
20
D H H J
NEU/RUN
SWITCH
7N8000
NO SYNC
LAMP
7N5876
747-WH
743-PU
23
8
810 9 7 6 4 3 2 1
7
6
5
4
3
2
1
R
N
TEST
8
7
6
5
4
3
2
1
R
N
10 9 8 6 5 4 3 2 1
1
2
4
5
6
7
4
3
2
1
N
R
TRANSMISSION SWITCH
(TRACTOR)
7T3419
SHIFT LEVER SWITCH
TRANSMISSION SWITCH
(SCRAPER)
9G1813
D67840
3
4
5
6
8
9
10
11
1
2
7
20 PIN CONNECTOR
(J) 5T1569 HARNESS AS.
(L) 6G8087 HARNESS AS.
20 PIN CONNECTOR
(L) 6G8087 HARNESS AS.
SCRAPPER TRANSMISSION SWITCHING CONTROL
2 PIN CONNECTOR
(L) 6G8087 HARNESS AS.
UPSHIFT,DOWNSHIFT AND SYNC SOLENOIDS
10 PIN CONNECTOR
(L) 6G8087 HARNESS AS.
(U) 6T4958 HARNESS AS.
7 PIN CONNECTOR
(U) 6T4958 HARNESS AS.
SCRAPPER TRANSMISSION SWITCH
3 PIN CONNECTOR
D 5T1525 HARNESS AS.
TRANSMISSION SPEED SENDER
2 PIN CONNECTOR
(D) 5T1525 HARNESS AS.
UPSHIFT, DOWNSHIFT, AND LOCKUP SOLENOIDS
37 PIN CONNECTOR
(D) 5T1525 HARNESS AS.
TRACTOR TRANSMISSION CONTROL
10 PIN CONNECTOR
(D) 5T1525 HARNESS AS.
(V) 6G9811 HARNESS AS.
10 PIN CONNECTOR
(V) 6G9811 HARNESS AS.
TRACTOR TRANSMISSION SWITCH
14 PIN CONNECTOR
(D) 5T1525 HARNESS AS.
(WW) 6T4958 HARNESS AS.
10 PIN CONNECTOR
(WW) 6T4958 HARNESS AS.
SHIFT LEVER SWITCH
20 PIN CONNECTOR
(D) 5T1525 HARNESS AS.
(H) 5T1523 HARNESS AS.
20 PIN CONNECTOR
(H) 5T1523 HARNESS AS.
(J) 5T1569 HARNESS AS.
B92443X1
10 PIN CONNECTOR
(L) 6G8087 HARNESS AS.
(U) 6T4958 HARNESS AS.
7 PIN CONNECTOR
(U) 6T4958 HARNESS AS.
SCRAPPER TRANSMISSION SWITCH
2 PIN CONNECTOR
(L) 6G8087 HARNESS AS.
UPSHIFT,DOWNSHIFT AND SYNC SOLENOIDS
2 PIN CONNECTOR
(D) 5T1525 HARNESS AS.
UPSHIFT, DOWNSHIFT, AND LOCKUP SOLENOIDS
10 PIN CONNECTOR
(D) 5T1525 HARNESS AS.
(V) 6G9811 HARNESS AS.
10 PIN CONNECTOR
(V) 6G9811 HARNESS AS.
TRACTOR TRANSMISSION SWITCH
37 PIN CONNECTOR
(D) 5T1525 HARNESS AS.
TRACTOR TRANSMISSION CONTROL
14 PIN CONNECTOR
(D) 5T1525 HARNESS AS.
(WW) 6T4958 HARNESS AS.
10 PIN CONNECTOR
(WW) 6T4958 HARNESS AS.
SHIFT LEVER SWITCH
20 PIN CONNECTOR
(D) 5T1525 HARNESS AS.
(H) 5T1523 HARNESS AS.
20 PIN CONNECTOR
(H) 5T1523 HARNESS AS.
(J) 5T1569 HARNESS AS.
3 PIN CONNECTOR
D 5T1525 HARNESS AS.
TRANSMISSION SPEED SENDER
B92444X1
IDENT HARNESS AS.
D 5T1525
H 5T1523
J 5T1569 (*)
L 6G8087
U 6T4958
V 7T3418
W 8W0627
WW 6G9811
ON COAL SCRAPER.
* 5T6884 REPLACES STANDARD HARNESS
CAT
637E TRACTOR-SCRAPER
COMPONENT IDETIFICATION
1. Tractor Transmission Control.
2. Shift Lever Switch.
3. Tractor Transmission Switch.
4. Transmission Speed Sender.
5. Tractor Upshift, Downshift and lockup
Solenoids.
6. Hold Swicth.
7. Scraper Transmission Switching Control.
8. Neutral/Run Switch.
9. No Sync Light.
10. Scraper Transmission Switch.
11. Scraper Upshift, Downshift and Sync Solenoids.