Compontent Locations Circuit Number Chart CIRCUIT NUMBER 101 102 103 105 107 109 110 112 113 114 118 119 121 122 123 124 125 130 140 165 173
COLOR RD BU VL BR WH OR GN PU OR GN GV PK YL BU WH GN OR GN BU VL YL
200 201 202 203 207
BK BK BK BK BK
301 302
BU OR
304 306 308 310 311 321 322 326 327
WH GN YL PU WH BR GV PU PK
403 405 406
GN GV PU
407
PK
408 409 410 411
WH OR WH PK
413 415 419 443 446 449 450 451 454
BR GN YL YL PU BU YL BR GN
POWER DISTRIBUTION CIRCUITS BATTERV HEAD LAMP DOME/DASH/PARK/TAIL LAMP KEV SWITCH ENGINE SHUTDOWN CONTROL ALTERNATOR OUTPUT (+) TERM. WINDSHIELD WIPER SW. (REAR) MAIN POWER RELAV OUTPUT OPERATOR MONITOR PANEL WARNING HORN (FORWARD) WINDSHIELD WIPER SW. (FRONT) WINDSHIELD WIPER SW. (REAR) BACK UP ALARM/LAMP AIR DRVER GAUGES HEATER/AIR CONDITIONER SW. SUSPENSION FUSE TO SUSPENSION INDICATOR LAMPS LOCK UP FUSE TO CONTROL START AID FEED WORK/STOP LAMP GROUND CIRCUITS MAIN CHASSIS OPERATOR MONITOR PANEL TRANSMISSION CONTROL CHASSIS DIAGNOSTIC STARTER DIAGNOSTIC MACHINE BASIC CIRCUITS STARTER NO.1 SOL. TO RESISTOR STARTER NO.1 TO DIAGNOSTIC! RESISTOR TO DIAGNOSTIC STARTER RELA V TO NO.1 OUTPUT START RELAV TO NEUTRAL START SW. MAIN POWER RELAV COIL START AID SW. TO START AID SOL. START AID SOL. TO TEMP SW. BACK UP ALARM/LAMP WARNING HORN (FORWARD) KEV SWITCH "C" TERMINAL SHUT DOWN SOL. MONITORING CIRCUITS ALTERNATOR (R) TERMINAL OPERATOR MON PANEL OIL PRESS. OPERATOR MON PANEL COOLANT TEMP. OPERATOR MON PANEL CONV/RET OIL TEMP. OPERATOR MON PANEL BRAKE PRESS. OPERATOR MON PANEL NEUTRAL OPERATOR MON PANEL FAULT ALARM OPERATOR MON PANEL MASTER FAULT LAMP OPERATOR MON. PANEL FUEL PRESS. OPERATOR MON PANEL TEST SW. OPERATOR MON PANEL PARK BRAKE POWER TRAIN TEMP GAUGE BRAKE OIL TEMP SENDER SPEEDO SENDER TACOMETER SENDER(+) TACOMETER SENDER(-) RETARDER INDICATOR LAMP
SENR8192 January 1990
A - COMPONENTS IN OPERATOR COMPARTMENT CIRCUIT NUMBER 469 472 477 488 490 498
COLOR GN OR VL WH GN WH
500 501 502 503 504 505 506 507 513 515 516 517 521 522 537 539 540 572 573 589
BR GN OR BR YL BU PU WH OR GV GN BU VL WH GN BU WH PU GN GN
602 604 605 606 610 811 614 619 624
WH OR YL GV OR PU PU GN YL
705
PK
706 709 710
BR OR GN
790 791 792 793 794 815 821 A789
WH OR BU YL GN GN YL PK
A79O
WH
A791 A792 A793 A794 A982 B958
OR BU YL GN BR GN'
IDENT 45 45 5 30 21 16 20 20 20 20 20 20 10 3 42 10 25 10 20 20 20 20 20 20 20 20 20 20 20 20 10 10 8 10 10 10 10 10 10 10 10 10 12 4 9 9 9 9 10 43 43 44 44 44
MONITORING CIRCUITS FUEL LEVEL SENDER SERVICE BRAKE INDICATOR LAMP SPEEDO PROBE AIR PRESS. SW. LINK LOCK UP INDICATOR LAMP DIFF LOCK INDICATOR LAMP ACCESSORY CIRCUITS WIPER - FRONT (PARK) WIPER - FRONT (LOW) WIPER - FRONT (HIGH) WIPER - REAR (PARK) WIPER - REAR (LOW) WIPER - REAR (HIGH) WASHER-FRONT WASHER-REAR AIR CONDITIONER COMPRESSOR BLOWER MOTOR (HIGH) BLOWER MOTOR (MEDIUM) BLOWER MOTOR (LOW) AIR COND. SW. TO REFRIGERANT SW. AIR COND. COMPR. TO THERMO. SW. TURN SIGNAL SW TO FLASHER TURN SIGNAL INDICATOR BASIC/RIGHT TURN SIGNAL INDICATOR BASIC/LEFT RETARDER SOL. TO GROUND SW. LOCK UP SW. TO RETARDER SW. PRESS. SW. TO AIR COND. CLUTCH LIGHTING CIRCUITS DOME LAMP STOP LAMP TURN LAMP-LEFT TURN LAMP - RIGHT HEAD LAMP BASIC HEAD LAMP HIGH PARK/TAIL/DASH LAMP HEAD LAMP-LOW WORK LAMP CONTROL CIRCUITS TRANSMISSION LOCK UP CLUTCH SOL. BASIC TRANSMISSION RETARDER SW. TRANSMISSION PICK UP POWER TRANSMISSION SPEED PICK UP SIGNAL PARK BRAKE & SUSPENSION CONTROL FRONT SUSPENSION FRONT SUSPENSION REAR SUSPENSION REAR SUSPENSION TRANSMISSION PRESSURE SENSOR TRANSMISSION PRESSURE SENSOR SERVICE BRAKE TO PARK BRAKE INHIBIT SW. SUSPENSION GROUND TO PARK BRAKE INHIBIT DOWN SOL FRONT UP SOL. FRONT DOWN SOL REAR UP SOL. REAR RETARDER SOL TO THROTTLE SW. LOCK UP CLUTCH CONTROL TO PRESS. SW.
44 9
SCHEMATIC COMPONENTS ALARM - BACK UP (D30D) ALARM - BACK UP (D25D/D350D) ALARM-FAULT ALTERNATOR AUXILIARY START RECEPTACLE BATTERIES BREAKER - AIR CONDITIONER BREAKER-ALTERNATOR BREAKER - ENGINE SHUTDOWN BREAKER-HEADLAMP BREAKER - KEY BREAKER-TURN/PARK CONTROL - ENGINE SHUTDOWN CONTROL - FRONT SUSPENSION CONTROL - REAR SUSPENSION (D30D) CONNECTOR-DIAGNOSTIC DRYER - AIR FLASHER FUSE - AIR DRYER FUSE - BACK UP ALARM FUSE - DOME LIGHT FUSE - FRONT WIPER FUSE-HORN FUSE-GAUGES FUSE -INDICATOR LAMP FUSE - OPERATOR MONITOR FUSE-REARWlPER FUSE - START AID FUSE - RETARDER SOLENOID FUSE - SUSPENSION CONTROL GAUGE-CONVERTER TEMPERATURE GROUND - DASH PANEL HORN - WARNING INDICATOR - DIFFERENTIAL LOCK INDICATOR - HIGH BEAM INDICATOR - LEFT TURN INDICATOR - RETARDER INDICATOR - RIGHT TURN INDICATOR - SERVICE BRAKE INDICATOR - TORQUE CONVERTER LOCK LAMP - BRAKE AIR PRESSURE GAUGE LAMP - BRAKE AIR PRESSURE GAUGE LAMP-CAB LAMP - DOME LAMP - HIGH BEAM HEAD RH LAMP - HIGH BEAM HEAD LH LAMP - LOW BEAM HEAD RH LAMP - LOW BEAM HEAD LH LAMP - MASTER FAULT LAMP - BACK UP (D30D) LAMP - BACK UP (D25D/D350D) LAMP - STOP/TAIL/TURN RH (D30D REAR) LAMP - STOP/TAIL/TURN LH (D30D REAR) LAMP - STOP/TAIL/TURN RH (D30D/D300D REAR) LAMP - STOP/TAIL/TURN LH (D30D/D350D REAR) LAMP - TURN/PARK RH (FRONT)
LOCATION IDENT SCHEMATIC COMPON ENTS A-11 9 LAMP - TURN/PARK LH (FRONT) A-12 10 METER-SPEEDO C-5 10 METER - SERVICE HOUR 10 METER-TACHO A-2 A-5 A MOTOR - BLOWER A-5 A MOTOR - FRONT WASHER D-4 A MOTOR - FRONT WIPER E-9 A MOTOR - REAR WASHER E-4 A MOTOR - REAR WIPER D-4 32 MOTOR-STARTER . D-9 10 PANEL - OPERATOR MONITOR D-4 38 PICK-UP - SPEEDOMETER E-1 31 PICK-UP - TACHOMETER F-12 20 RELAY-START B -10 10 RELAY - MAIN POWER F-9 A RESISTOR - AIR CONDITIONER E-11 40 RESISTOR D-3 21 SENDER-CONVERTER TEMPERATURE E-5 39 SOlENOID - AIR CONDITIONER CLUTCH D-1 26 SOLENOID - FRONT SUSPENSION E-1 28 SOLENOID - ENGINE SHUTDOWN E-5 26 SOLENOID - REAR SUSPENSION D-1 A SOLENOID - START AID E-1 1 SWITCH - BACK-UP ALARM E-5 10 SWITCH - BLOWER E-1 11 SWITCH - BRAKE AIR PRESSURE E-5 11 SWITCH - BRAKE AIR PRESSURE D-1 10 SWITCH - CAB LAMP E-5 10 SWITCH - CONVERTER LOCK INDICATOR E-1 31 SWITCH-CONVERTER TEMPERATURE F-3 34 SWITCH - COOLANT TEMPERATURE D-2 33 SWITCH - COOLANT TEMPERATURE B-1 (ETHER INHIBIT) F-4 36 SWITCH - DIFF LOCK F-5 1 SWITCH - DIMMER F-6 6 SWITCH - DISCONNECT F-5 13 SWITCH-DOME LAMP F-4 35 SWITCH - ENGINE OIL PRESSURE F-5 22 SWITCH - FRONT BRAKE OVERSTROKE F-6 10 SWITCH-FRONTWIPER E-6 29 SWITCH-FUEL F-6 2 SWITCH.FUEL LEVEL B-8 10 SWITCH - HORN B-1 10 SWITCH - KEY START B-1 14 SWITCH - LOCK UP INDICATOR C-1 10 SWITCH - OPERATOR MONITOR TEST A-1 23 SWITCH - PARK BRAKE INDICATOR C-1 19 SWITCH - PARK BRAKE INHIBIT F-2 41 SWITCH - BRAKE OVERSTROKE (D350D) A-11 41 SWITCH - BRAKE OVERSTROKE (D30D) A-12 10 SWITCH-REAR WIPER A-11 10 SWITCH - REFRIGERANT B-11 15 SWITCH - RETARDER INDICATOR 10 SWITCH - RUNNING LAMP A-12 11 SWITCH - TURN SIGNAL 10 SWITCH - START AID B-12 18 SWITCH - STOP LAMP A-1 A THERMOSTAT
LOCATION C-1 E-4 E-5 E-5 B-4 D-11 B-6 D-10 C-1 A-6 F-1 E - 11 A-3 D-9 D-4 B-5 A-6 C-11 B-3 F -12 A-2 F -12 B-2 C-3 B-5 B-2 C-2 F-1 D-10 E -11 A-4 A-4 D-11 C-2 A-4 B-1 A-3 E -10 E-8 A-3 A-2 F-8 E-3 D -10 F-3 F - 10 C-2 B -12 B-11 F-1 B-2 E.11 F-8 E-2 F-3 C-2 B-5
Tractor (Except Engine and Transmission) 4
2
1
3
26
9
21 14
5
23 24
10 9
25
D25D, D30D, D350D Articulated Dump Trucks Electrical System
8 20
13
16
7
6
22
12
4
11 10
15
13
1HK1-UP 3AJ1-UP 9RF1-UP
A 20
14 8 25
17
19
18
7
16
6
5
22
26
23 24
© 1990 Caterpillar All Rights Reserved
D25D Trailer
Engine and Transmission - Right Side 41 28
27
29
43
43
43
30
40
45
44
44
45
44
D30D Trailer 41
37
32
31
42
43
42
43
43
39
38 36
Engine and Transmission - Left Side 33
34
35 45
44
45
44
44
D350D Trailer 46
47
43
41
37 38
36 45
C32108P1
C32109P1
44
44
45
44
Printed in U.S.A.