SENR1256-01
August 1997
D3C, D4C, and D5C Series III Hystat
933C and 939C Hystat Track-Type
Loaders Electrical System
D3C:
4KS1-Up
4TS1-Up
5GS1-Up
933C:
4MS1-Up
5JS1-Up
D4C:
4LS1-Up
6BS1-Up
8CS1-Up
939C:
6DS1-UP
D5C:
5HS1-Up
6CS1-Up
7PS1-Up
Track-Type Tractors
Component Location
Component
Schematic
Location
Machine
Location
Component
Schematic
Location
Machine
Location
Alarm - Backup B-10 1 Relay - Main Power D-3 A
Alternator C-2 2 Relay - Start D-3 A
Battery E-12 3 Resistor - Blower Motor A-6 C
Breaker - Cab Main Power A-6 C Sender - Engine Oil Pressure E-2 11
Breaker - Glow Plug E-4 A Sender - Fuel Level F-9 12
Breaker - Light E-4 A Sender - Hydraulic Temperature B-10 13
Breaker - Main D-4 A Sensor - Start Aid Temperature E-1 14
Controller - Kickout A-5 22 Service Hour Meter D-6 A
Fuses B-4,C-4 A Solenoid - Brake E-3 15
Fuses - Cab A-7 C Solenoid - Compressor Clutch F-1 16
Gauge - Coolant Temperature C-6 A Solenoid - Engine Shutdown E-2 17
Gauge - Engine Oil Pressure C-6 A Solenoid - Hi/Low Speed C-9 1
Gauge - Fuel Level D-6 A Solenoid - Start Aid E-1 14
Gauge - Hydraulic Oil Temperature D-6 A Switch - A/C Compressor C-8 D
Glow Plugs D-2 4 Switch - A/C Hi/Lo Pressure F-1 16
Ground- Cab A-6 C Switch - Backup Alarm D-7 B
Ground - Frame C-2 5 Switch - Battery Disconnect B-12 1
Group - Condenser D-11 6 Switch - Blower B-7 D
Horn - Forward Warning D-1 7 Switch - Coolant Temperature D-1 16
Indicator - Filter Bypass C-5 A Switch - Front Wiper C-7 D
Indicator - Hi/Low Speed D-5 A Switch - Hyd Filter Bypass Pressure E-9 10
Indicator - Low Brake Pressure D-5 A Switch - Key Start C-5 A
Lamp - Alternator Warning C-5 A Switch - Lift Arm A-4 23
Lighter - Cigar B-7 D Switch - Low Brake Pressure C-9 1
Motor - Blower A-5 C Switch - Neutral Start / Park Brake D-7 B
Motor - Front Wiper C-3 8 Switch - Panel and Flood Light D-6 A
Motor - Rear Wiper D-8 9 Switch - Park Brake D-3 18
Motor - Starter C-2 5 Switch - Rear Wiper C-7 D
Motor - Washer Tank and Pump C-9 10 Switch - Start Aid D-6 A
Relay - Backup Alarm B-4 A Switch - Tilt Cylinder A-4 24
Relay - Cab Main Power A-6 C Switch - Washer C-8 D
Relay - Glow Plug D-3 A Thermostat A-6 C
Relay - Hi/Low Speed B-4 A Timer - Engine Shutdown E-2 A
Relay - Horn E-3 A Valve Group - Lift/Tilt A-5 25
Relay - Light B-4 A Valve Group - Pilot D-7 B
Machine locations are repeated for components located close together.
A = Located on dash.
C = Located inside the operator's right console.
B = Located on operator's left console.
D = Located on the operator's left console.
Resistor, Sender and Solenoid Specifications
Part No. Component Resistance (Ohms)¹
3E-1908 Solenoid - A/C Compressor Clutch 3.5 ± .15
7T-3828 Resistor - Blower Motor Overall 1.0 ±10; Tap 0.5 ± .05
7W-9943 Sender - Hydraulic Temperature
560 - 716 @ 54.40 °C (129.9 °F)
72.1 - 81.1 @110°C(230°F)
8Y-5169 Sender - Fuel Level
Empty: 230 - 260
Full: 27.5 - 39.5
113-5320 Solenoid - Brake 8.5
116-9937 Sender - Engine Oil Pressure
21.5 - 49.5 @ 552 kPa (80.1 psi)
227 - 257 @ 21 kPa (3.0 psi)
¹ At room temperature.
Wire Description
Wire
Number
Wire
Color
Description
Wire
Number
Wire
Color
Description
Power Distribution Circuits
Monitoring Circuits (cont'd.)
101
RD
Bat(+)
C491
PU
Park Brake Pressure
105
BR
Key Sw
Accessory Circuits
109
RD
Alt Output (+) Term.
500
BR
Wiper - Front (Park)
112
PU
Main Power Rly Output
501
GN
Wiper - Front (Low)
114
GN
Warning Horn (Forward)
502
OR
Wiper - Front (HI)
118
GY
Aux Ckt
502
OR
Wiper - Front (HI)
123
WH
Aux Ckt
503
BR
Wiper - Rear (Park)
124
GN
A/C
504
YL
Wiper - Rear (Low)
128
PK
Aux Ckt
505
BU
Wiper - Rear (HI)
129
BU
Aux Ckt
506
PU
Washer - Front
139
OR
Aux Ckt
508
PU
Radio Speaker - Left
158
BR
Aux Ckt
509
WH
Radio Speaker - Left (Common)
176
OR
Aux Ckt
511
BR
Radio Speaker - Right
177
RD
Main Brkr
512
GN
Radio Speaker - Right (Common)
Ground Circuits
515
GY
Blower Motor (HI)
200
BK
Main Chassis
516
GN
Blower Motor (Medium)
237
BK
Start Aid Gnd
517
BU
Blower Motor (Low)
Basic Machine Circuits
521
YL
A/C SW To Refrigerant SW
304
WH
Starter Relay No.1 Output
522
WH
A/C Clutch To Thermostat SW
306
GN
Starter Relay Coil To Neut Start SW Or Key SW
567
WH
A/C SW Jumper
308
YL
Main Power Relay Coil
589
GN
A/C HI Press. Cutout SW To Compressor
310
PU
Start Aid SW To Start Aid Sol
C557
OR
Relay to Condenser Motor 2
311
WH
Start Aid Sol To Temp SW
C566
PK
Left Rear Speaker (Common)
320
OR
Horn Relay Coil To SW
Lighting Circuits
321
BR
Bckp Alarm
600
BR
Dash Lamp Basic
322
GY
Warning Horn (Forward)
633
BU
Attach Lighting Ckt
327
PK
Shutdown Sol
645
PK
Headlamp Relay
331
OR
Bckp Alarm Relay Coil
Control Circuits
359
BU
Shutdown Sol Latch - B (+)
761
GY
Lift Kickout Sol SW
374
PK
Neutral Start SW To Park Brake SW
762
YL
Bucket Positioner Sol SW
382
PK
Start Aid Sol #1 (+)
C742
OR
High Speed Propel- SW To Sol
383
GN
Start Aid Sol #1 (-)
C744
PU
Parking Brake - Sol To SW
Monitoring Circuits
D718
GY
Impl Cont Tilt Cyl Position
403
GN
Alternator (R) Term.
D719
OR
Impl Cont Lift Kickout Sol
441
OR
Eng Coolant Temp Gauge
G728
YL
Backup Alarm Press SW
443
YL
Power Train Temp Gauge
817
WH
Back-Up Alarm Relay
447
PK
Fuel Level Gauge
877
YL
Glow Plug Magnetic SW To Glow Plug
464
GY
Opr Mon Panel Eng Oil Press. Sensor
899
BU
Hydrst Track Speed Increase
C444
YL
Alternator Indicator Lamp
F853
BR
Travel Speed
C446
PK
Power Train Filter Warning
C907
WH
Neutral Start SW to Park Brake SW
A
3
4
5
6
8
9
10
11
12
14
15
13
B
C
D
1
2
17
18
19
20
21
22
23
24
25
7
A
3
4
5
6
8
9
10
11
12
14
15
13
B
C
D
1
2
17
18
19
20
21
22
23
24
25
7
17
17
21
MACHINE HARNESS CONNECTOR AND COMPONENT LOCATIONS
E02547
Connector Location ¹
Connector Number
Schematic
Location
Machine
Location
CONN 1 F-4 19
CONN 2 F-4 19
CONN 3 F-6 19
CONN 4 E-6 19
CONN 5 E-6 19
CONN 6 E-6 19
CONN 7 E-9 20
CONN 8 E-9 20
CONN 9 D-11 6
CONN 10 D-8 B
CONN 11 D-3 18
CONN 12 B-7 21
CONN 13 B-7 C
CONN 14 B-6 A
CONN 15 B-6 A
CONN 16 A-3 5
CONN 17 A-5 C
CONN 18 A-8 20
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.
Off Machine Switch Specifications
Part No. Function Actuate Deactuate Contact Position
3E-7891 Backup Alarm Pressure
295 kPa Max
(42.8 psi Max)
230 ± 20 kPa
(33.4 ± 2.9 psi)
Normally
Open
104-7843 Coolant Temperature
38 ± 3°C
(100 + 5.5°F)
27°C
(80°F)
Normally
Closed
107-2265 Low Brake Pressure
400 kPa MAX
(58.0 psi MAX)
350 ± 20 kPa
(50.8 ± 2.9 psi)
Normally
Closed
114-5333 A/C Hi/Lo Pressure
275 to 1750 kPa ¹
(40 to 255 psi)
-
-
Normally
Open ²
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).
² Contact position at the contacts of the harness connector.
Related Electrical Service Manuals
Title Form No.
Starting Motor: 105-3133 (R3.0) SENR3828
T
Normally open switch that will close with an increase of a specific condition (temp-press-etc.).
Normally open switch that is closed due to an applied condition, and will open again with a
specific decrease in that condition.
Normally closed switch that will open with an increase of a specific condition.
Normally closed switch that is open due to an applied condition, and will close again
with a specific decrease in that condition.
The circle indicates that the component has screw terminals and a wire can be disconnected
from it.
No circle indicates that the wire cannot be disconnected from the component.
This indicates that the component has a wire connected to it that is connected to ground.
This indicates that the component does not have a wire connected to ground. It is grounded
by being fastened to the machine.
Electrical Schematic Symbols And Definitions
Pressure
Symbol
Temperature
Symbol
Level
Symbol
Flow
Symbol
A AA
2
A AA
1
2
325-PK-14
C
A
325-PK-14
200-BK-14
T
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.
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.
Harness And Wire Electrical Schematic Symbols
Socket
Pin
Pin or Socket
Number
Wire, Cable, or Harness
Assembly Identification
Single Wire
Connector
Circuit Number
Identification
Wire
Gauge
Wire
Color
Plug
Receptacle
9X-1123
Component
Part Number
Electrical Schematic Symbols And Definitions
1
1
1
2
2
Typical representation of a
Sure-Seal connector. The
plugand receptacle contain
both pins and sockets.
Typical representation of a
Deutsch connector. The
plug contains all sockets
and the receptacle contains
all pins.
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.
Printed in U.S.A.
1997 Caterpillar
All Rights Reserved
123-WH
123-WH
322-GY
85
86
30
87
2
1
BK-18
BK-18
87
30
8685
5
1
3
8
6
7
F853-BR
E
F853-BR
200-BK
200-BK
F853-BR
F853-BR
1
2
G
1
2
BK-14
BK-14
1
C
L
112-PU
177-RD
200-BK
MUR440
COMPRESSOR
CLUTCH
3E-1908
ARC SUPPRESSOR
106-8704
1
2
3
BK-18
BK-18
N
N
N
522-WH
521-YL 521-YL
522-WH
522-WH
589-GN
589-GN
589-GN
2
1
2
1
2
1
T °
T
WH
BK
E10
E10
ATCHO'ROPS HEATER03109-0972
ATCHO'ROPS HEATER01109-0970VV
UU
X
F10
X
X
X
X
X
109-RD-6
517-BU-14
516-GN-14
515-GY-14
515-GY-14
112-PU-14
112-PU-14177-RD-8
308-YL-14
200-BK-14
200-BK-14
200-BK-14
TO ALT +
TERMINAL
A
BREAKER
8D-7265
RESISTOR
7T-3828
SWITCH AS.
103-0799
2
1
WH-18
WH-18
40A
WW
UU
UU
VV
VV
X
6
5
4
3
B11
WW
WW
2
1
BLOWER SW
110-7890
1
3
4
5
2
OROPS HEATER GP 136-7785
GN-14
BU-14
GN-14
BR-14
GY-14
BLOWER
3E-7501
WH/RD-14
BK-14
MOTOR
START AID SOL
138-2622
BK
BK
TEMP SW
138-2626
ATCH
B9
O'ROPS HEATER00
Z
Z
FUSE
8M-0456
Z
Z
Z
Z
382-PK
382-PK
237-BK
237-BK
382-PK
237-BK
383-GN
383-GN
382-PK
POS NEG
POS NEG
CC DD
CC DD
BK-00
RD-00
RD-00
BK-00
RD-00
BK-00
RD-00
BK-00
BATTERY
9X-3404
BATTERY
9X-3404
321-BR
200-BK
U,V
A3
A2
A2
ATCH
ATCH
ATCH
ATCH
137-4143
ATCH
ATCH
ATCH
ATCH
D3
BLOWER
103-5696
BLOWER
103-5696
RELAY
7X-1379
RELAY
7X-1379
W
W
W
W
W
W
W
W
W
W
W
521-YL-14
200-BK-14
158-BR-14
200-BK
521-YL-14
C
EE
GG,DD
J
2
A U,V
200-BK
JJ
U,V
FLOOD LAMP
105-8070
1
567-WH-14
1
F
123-WH
J
7T-3828
RESISTOR
D3
C2
B9
E9
E9
E9
C2
E9
A7
F4
B7
B7
E9
00136-5939
00
ATCHO'ROPS HEATER02113-2674X
ATCHCONDENSERD9
200-BK-14
633-BU-14
633-BU-14
200-BK-14
4
12
2
11
7
9
6
8
3
1
5
10
633-BU-14
200-BK-14
U,V
633-BU-14
200-BK-14
00134-6059
200-BK-14
633-BU-14
2
1
F
F
F
F
F
F
XXXX
FFFFFF
F
F
F
F
A
F
F
G
G
T
G
G
A
A
A
3
2
1
2
3
7
8
8
7
E
EE
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
E
G
SS
MM
SSNN
NN
PP
PP
RR
MM
G
SS
G
G
G
PPPP PP PP
PP
PP
E
NNNN
G G G G
GGGG
G
G
G G
GG
GG
G
G
GE
E
N
C
K
K
K
K
K
J
KK
KK
C
C
TT
TT
200-BK-14
633-BU-14
200-BK-14
633-BU-14
HYDRAULIC
TEMP SENDER
7W-9943
BACKUP
ALARM
123-6449
C
200-BK
G728-YL
G728-YL
331-OR
447-PK
C446-PK
200-BK
R
R
RA
C
C
C446-PK
K
K
TT
TT
C
C
J
C
C
899-BU
139-OR
C
BATTERY
9X-3404
443-YL
200-BK
321-BR
BK-00 BK-00
114-GN
320-OR
BK-18
HORN
RELAY
3E-9362
BK
BK
BATTERY
DISCONNECT
7N-0718
FUSES
9W-1446 20A
9W-1441 15A
20A
START AID GP
2
RD-00
BK
BK
899-BU
1
2
139-OR
443-YL
443-YL
200-BK
321-BR
1
2
2
1
139-OR
BK-00
C
FUEL LEVEL
SENDER
HYD
FILTER
BYPASS SW
7X-8549
HI/LOW SPEED
139-7758
LOW BRAKE
PRESS. SW
107-2265
200-BK
C491-PU
3
2
2
1
°T
-
+
1
899-BU
BK
BK
C446-PK
C446-PK
447-PK
200-BK
200-BK
CHASSIS/CASE
GROUND
899-BU
139-OR
4
3
2
1
200-BK
C491-PU
C
600-BR
308-YL 1
2
C
C
C
521-YL-14
C
CONDENSOR GP
101-9616
158-BR-14
C
C
C
C
C
C
158-BR-14
521-YL-14
200-BK-14
200-BK-14
200-BK-14
C557-OR-14
C566-BU-14
C566-BU-14
C557-OR-14
200-BK-14
200-BK-14
WH/RD-14
BK-14
BK-14
WH/RD-14
C
D3
C
521-YL
521-YL-14
WASHER TANK
AND PUMP
106-9706
506-PU
200-BK
C
506-PU
600-BR
200-BK
308-YL
521-YL
2
1
2
1
C
C
C
C
200-BK-14
200-BK
A/C HI/LO SW
114-5333
118-GY-14
158-BR-14
158-BR
200-BK
C
DOME LAMP
4M-3601
158-BR
200-BK BK
WH
200-BK-14
200-BK
JJ
A7
D3
B4
A5
E1
A9
135-5946
RADIO
200-BK
502-YL
501-GN
500-BR
118-GY-14
505-BU
504-YL
503-BR
118-GY-14
118-GY-14
118-GY-14
118-GY-14
118-GY-14
200-BK
200-BK
200-BK
200-BK
506-PU
LAMP
7N-5876
118-GY-14
118-GY-14
521-YL
MOTOR
308-YL
200-BK
200-BK
BLOWER
3E-7501
MOTOR
BK-14
BK-14200-BK-14
515-GY-14515-GY-14
516-GN-14
517-BU-14
2
124-GN-14
BLOWER
LIGHTER
WIPERS
CONDENSOR/DOME
FUSE BLOCK
9W-2035
158-BR-14
118-GY-14
2
WH-18
BK-18
CAB GROUND
633-BU-14
200-BK-14
T
T
200-BK
600-BR
506-PU
2
1
567-WH-14
600-BR
200-BK
521-YL
506-PU
506-PU
600-BR
200-BK
118-GY-14
505-BU
118-GY-14
503-BR
502-OR
118-GY-14
500-BR
FRONT WIPER
SW
109-2344
REAR WIPER
SW
118-0366
8
7
2
3
3
5
4
3
1
2
1
6
BU-14
GN-14
GY-14
BR-14
GN-14
3
4
5
2
1
A/C COMPRESSOR
119-5646
2
4
5
1
2
3
6
BK-18
8
7
8
129-BU-14
WASHER SW
109-2352
8
7
7
6
3
2
1
5
158-BR-14
118-GY-14
129-BU-14
124-GN-14
112-PU-10
112-PU-10
112-PU
112-PU-10
112-PU-10
4
200-BK
200-BK
200-BK
200-BK
177-RD-4 109-RD-4
20A
15
15
20
60
BREAKER
2V-2380
MAIN POWER - CAB
RELAY
103-0799
308-YL
BK-18
BK-18
°T
521-YL
522-WH 1
2
321-BR
C
B
A
331-OR
200-BK
633-BU
200-BK
200-BK
200-BK
200-BK
200-BK
200-BK
600-BR
374-PK
306-GN
320-OR
C907-WH
C446-PK
200-BK
308-YL
C744-PU
331-OR
176-YL
C491-PU
447-PK
443-YL
633-BU
C742-OR
139-OR
899-BU
200-BK
200-BK
200-BK
200-BK
200-BK
200-BK
899-BU
139-OR
C742-OR
633-BU
443-YL
447-PK
600-BR
C491-PU
176-YL
331-OR
C744-PU
308-YL
321-BR
200-BK
C446-PK
C907-WH
320-OR
306-GN
374-PK
200-BK
200-BK
200-BK
C742-OR
320-OR
C742-OR
374-PK
C907-WH
306-GN
200-BK
VALVE GP
PILOT
108-7793
NEUTRAL START/
PARK BRAKE
SWITCH
9X-4157
PARK BRAKE SW
200-BK
306-GN
C907-WH
374-PK
RD
BU
GN
YL
GY
8
7
BK
5
200-BK
4
3
1
6
2 306-GN
200-BK
6
5
4
3
2
1
320-OR
GN
RR
200-BK
200-BK
200-BK
C444-YL
403-GN
306-GN
C446-PK
200-BK
321-BR
308-YL
331-OR
176-YL
C491-PU
600-BR
123-WH
447-PK
443-YL
633-BU
C742-OR
139-OR
899-BU 899-BU
139-OR
C742-OR
633-BU
443-YL
447-PK
114-GN
600-BR
C491-PU
176-YL
331-OR
308-YL
321-BR
200-BK
C446-PK
306-GN
200-BK
200-BK 200-BK
200-BK
464-GY
441-OR
200-BK
200-BK
200-BK
200-BK
200-BK
BRAKE
SOLENOID
113-5320
BK-18
BK-18
176-YL
C744-PU
2
1
304-WH-10
877-YL-10
109-RD-10
101-RD-10
200-BK
C907-WH
322-GY
327-PK-14
C744-PU
311-WH
464-GY
441-OR
403-GN
128-PK
C444-YL
308-YL
1
BACKUP ALARM SW
115-7102
115-7102
W
A
AH
HYD
FILTER
BYPASS SW
7X-8549
O-ROPS LIGHTING
E-ROPS LIGHTING
04
03
105-2451
104-5650
V
ATCH
ATCH
BATT/DISC
B+
DISC/STARTER
BATT/DISC
9U-8746
128-0775
128-0774
U
LL
KK
JJ
E9
ATCH
ATCH
00
ATCH
AA
AA
EE
FF,CC
D300141-8120
200-BK
XX
XX
ENGINE SHUTDOWN
TIMER
143-1729
GROUND
ON (KEY)
+ BATTERY
ENG SOL
BK
GN
RD
BU
G
109-RD-10
BU ENG SOL
BK GROUND
RD + BATTERY
374-PK
306-GN
320-OR
C907-WH
C446-PK
200-BK
321-BR
308-YL
C744-PU
331-OR
176-YL
C491-PU
600-BR
447-PK
443-YL
633-BU
C742-OR
139-OR
899-BU
12
R
R
R
CAB RLY TO FUSE BLK
11
ENG SHUTDWN BRKR
CAB RLY TO BRKR
ALT TO MAIN PWR BRKR
RADIO ANTENNA
10
9
8
7
STARTER TO CHASSIS GND
321-BR
6
5
4
3
2
1
12
11
10
9
8
7
6
MAIN PWR RLY TO FUSE BLK
MAIN PWR RLY & MAIN BRKR TO FUSE BLK
START RLY TO MAIN BRKR & GLOW PLUG BRKR
GLOW PLUG RLY TO BRKR
5
4
3
2
1
327-PK-14
359-BU-14
200-BK
645-PK
633-BU
331-OR
321-BR
C742-OR
114-GN
128-PK
105-BR
359-BU-14
176-YL
123-WH
139-OR
817-WH
139-OR
123-WH
176-YL
359-BU-14
105-BR
128-PK
114-GN
SS
C491-PU
200-BK
C
123-WH
123-WH
123-WH
123-WH
STARTER
105-3133
304-WH-10
374-PK
200-BK
101-RD-10
101-RD-10
310-PU
311-WH
877-YL-10
112-PU-10
112-PU-10
308-YL
200-BK
109-RD-10
109-RD-10
109-RD-10
101-RD-10
645-PK
200-BK
C742-OR
123-WH
899-BU
321-BR
331-OR
123-WH
817-WH
633-BU
200-BK
600-BR
645-PK
105-BR
C491-PU
306-GN
C446-PK
447-PK
443-YL
308-YL
308-YL
308-YL
308-YL
200-BK
200-BK
123-WH
123-WH
123-WH
600-BR
899-BU
139-OR
139-OR
899-BU
600-BR
441-OR
464-GY
443-YL
447-PK
105-BR
600-BR
123-WH
308-YL
200-BK
899-BU
139-OR
310-PU
447-PK
443-YL
403-GN
464-GY
441-OR
C446-PK
C444-YL
306-GN
C491-PU
200-BK
600-BR
899-BU
139-OR
139-OR
899-BU
600-BR
123-WH
123-WH
139-OR
899-BU
C491-PU
LOW BRAKE
PRESSURE
INDICATOR
8M-6176
HI/LOW SPEED
INDICATOR
8M-6176
C491-PU
ALTERNATOR
WARNING LAMP
8M-6176
FILTER BYPASS
INDICATOR
8M-6176
600-BR
899-BU
139-OR
308-YL
308-YL
200-BK
123-WH
310-PU
310-PU
308-YL
308-YL
123-WH
105-BR
306-GN
308-YL
9G-7641
310-PU
139-OR
899-BU
200-BK
308-YL
123-WH
600-BR
105-BR
C491-PU
306-GN
C444-YL-18
C446-PK-18
BACKUP ALARM SW
331-OR
441-OR-18
464-GY-18
403-GN-18
443-YL-18
447-PK-18
4
7
6
2
1
3
8
5
4
6
2
1
7
3
LL
8
200-BK
5
321-BR
9
10
11
12
YL
GY
BK
BU
RD
BK-18
WH-18
447-PK-18
443-YL-18
403-GN-18
464-GY-18
441-OR-18
123-WH
123-WH
123-WH
200-BK
200-BK
200-BK
200-BK
200-BK
308-YL
308-YL
308-YL
308-YL
200-BK
403-GN-18
SERVICE
HOUR METER
6T-7337
+ -
447-PK-18
443-YL-18
464-GY-18
441-OR-18
200-BK
600-BR
123-WH
200-BK
200-BK
123-WH
600-BR
200-BK
200-BK
600-BR
123-WH
200-BK
FUSE BLOCK
9W-2035
FUSES
8T-9636 30A
9W-1446 20A
9W-1441 15A
FUSE BLOCK
9W-2035
FUSES
9W-1446 20A
9W-1441 15A
9W-1442 10A
107-0799 5A
LIGHT
BREAKER
3T-2662
15
112-PU-14
177-RD-10
101-RD-10
177-RD-10
GLOW PLUG
BREAKER
8D-7265
MAIN BREAKER
4N-5844
40
101-RD-10
645-PK
101-RD-10
109-RD-10
109-RD-10
200-BK
308-YL
F853-BR
F853-BR
F853-BRF853-BR
899-BU
139-OR
112-PU-10
112-PU-10
112-PU-14
877-YL-10
311-WH
310-PU
101-RD-10
101-RD-10
200-BK
374-PK
304-WH-10
MAIN POWER
RELAY
103-0799
GLOW PLUG
RELAY
4L-3913
START RELAY
3E-7278
112-PU-10
112-PU-10
112-PU-10
112-PU-10
112-PU-10
176-YL
123-WH
359-BU-14
114-GN
128-PK
105-BR
40
114-GN
128-PK
105-BR
139-OR
817-WH
817-WH
139-OR
123-WH
176-YL
112-PU-10
109-RD-10
109-RD-10
359-BU-14
ENG SHUT OFF
KEY SW
K-OUT POSITIONER
FWD WARN HORN BRAKE SOL
WARNING INDICATORS
HI/LOW SPEED SOL
BACKUP ALARM
30
10
5
10 20
10
10
112-PU-10
109-RD-10
109-RD-10
112-PU-10
10
DK BU
DK GN
BU/WH
YL
H
L
MOTOR
°T
P
B+
GND
HARNESS AS.
BLOWER
MAIN POWER RELAY
POWER TRAIN
FIRE WALL
ENGINE
DASH
MAIN CAB
CASE
128-3413
128-3411
119-5087
118-6933
04118-3698
118-3696
128-3414
119-5090A
C
E
F
G
H
J
K
109-6555
138-2627
142-1355
119-5089
RADIO
WW
A/C COMPRESSOR
LEFT CONSOLE
KICKOUT CONTROL
ATCHBACKUP ALARM118-4604
L
Z
N
R
S
T
8R-1461
137-2729
137-2730
137-2731
137-2732
137-2733
ATCH
128-0776
GG
119-5084
119-5643
119-5644
119-5645
CABLE AS.
AA
CC
DD
EE
FF
GG
ATCH
WIRE AS.
TT
FF
MM
NN
PP
RR
119-7213SS
1
2 200-BK
128-PK
PARK BRAKE
SWITCH
9X-0023
C907-WH
WH-18
G
2
1
200-BK
C744-PU
WH-18
C744-PU
C907-WH
128-PK
327-PK-14
464-GY
200-BK 200-BK
2
C444-YL
403-GN
308-YL
322-GY
311-WH
441-OR
877-YL-10
109-RD-10
200-BK-10
304-WH-10
101-RD-10
COOLANT
TEMP
104-7843
FOWARD WARNING
HORN
6S-7339
GLOW PLUGS
107-3659 INDV
106-8229 GP
D8
B6
D8
B6
322-GY
-
+
311-WH
441-OR
200-BK-10
RD-00
304-WH-10
C444-YL
403-GN
308-YL
109-RD-4
109-RD-10
MOTOR
MOTOR
508-PU
509-WH
118-GY-14
118-GY-14
118-GY-14
501-GN
600-BR
8
7
3
2
1
6
5
4
NC
+ BATTERY (12V)
LEFT SPKR +
RIGHT SPKR +
WH,GN
WH/BK,GN/BK
RD
GY,VI
GY/BK,VI/BK
BK
YL +B MEMORY
GROUND
RIGHT SPKR -
LEFT SPKR -
ANTENNA
600-BR
200-BK
200-BK
501-GN
504-YL
118-GY-14
118-GY-14
118-GY-14
200-BK
600-BR
177-RD
RIGHT SPEAKER
6T-7695
LEFT SPEAKER
6T-7695
509-WH
508-PU
177-RD
112-PU
200-BK
512-GN
511-BR
512-GN
511-BR
200-BK
600-BR
LAMP
7N-5876
REAR WIPER
106-9708
504-YL
118-GY-14
503-BR
505-BU
GND
B+
P
T °
MOTOR
L
H
LOC
E-9
CHASSIS
GROUND
YL-14
BU/WH-14
DK GN-14
DK BU-14
504-YL
502-YL
500-BR
118-GY-14
501-GN
-
+
-
+
1
NEGPOS
403-GN
128-PK
C444-YL
306-GN
C491-PU
105-BR
600-BR
123-WH
308-YL
200-BK
899-BU
139-OR
310-PU
IGN
SEND
GRD
IGN
SEND
GRD
IGN
SEND
GRD
IGN
SEND
GRD
ST
ON
OFF
B
S
C
R
BATTERY GP - HEAVY DUTY
136-7783
2
158-BR-14
ANTENNA
8E-1118
J
J
BLOWER SW
110-7890
CIGAR LIGHTER
4K-1245
C444-YL-18
308-YL
C446-PK-18
123-WH
123-WH
123-WH
123-WH
123-WH
3
2
FLOOD LAMP
105-8070
1
2
1
200-BK
310-PU
123-WH
600-BR
200-BK
600-BR
200-BK
308-YL
200-BK
200-BK
200-BK
200-BK
200-BK
600-BR
308-YL
310-PU
600-BR
200-BK
123-WH
600-BR
200-BK
LAMP
7X-9065
LAMP
7X-9065
LAMP
7X-9065
LAMP
7X-9065
FUEL
LEVEL
113-5314
HYDRAULIC
OIL TEMP
117-8269
COOLANT
TEMP
113-5316
ENGINE OIL
PRESS.
117-8270
PANEL AND
FLOOD LIGHT
109-2347
START AID
106-6569
308-YL
200-BK
2
1
4
1
G
G
GG
G
F853-BR
F853-BR
BK
BK
600-BR
600-BR
C446-PK
645-PK
600-BR
200-BK
633-BU
817-WH
123-WH
331-OR
321-BR
899-BU
123-WH
C742-OR
200-BK
HI/LOW
SPEED
RELAY
144-3996
BACKUP
ALARM
RELAY
3E-9362
LIGHT
RELAY
3E-9362
200-BK
359-BU
327-PK
327-PK
359-BU
308-YL 4
200-BK
ARC SUPRESSOR
106-8704
2
WH-18
BK-18
FLOOD LAMP
105-8070
200-BK
310-PU
600-BR
600-BR
600-BR
600-BR
600-BR
124-GN-14
517-BU-14
516-GN-14
515-GY-14
FRAME
GROUND
BK-0
85 86
30
87
FRONT WIPER
106-9707
200-BK
THERMOSTAT
3E-5464
BK-00
101-RD-10
304-WH-10
200-BK-10
109-RD-10
877-YL-10
441-OR
311-WH
322-GY
308-YL
403-GN
C444-YL
1
2
BK
WH
T
°T
MOTOR
BATMTR
SG
327-PK-14
ENGINE
SHUTDOWN
SOLENOID
136-9517
464-GY
ENGINE OIL
PRESS SENDER
116-9937
ALTERNATOR
STD 105-2811 - 50A
ATCH 105-2814 - 90A
ENG GND
BOLT
1
3
2
E
B+
101-RD-10
R
COMPONENTS ARE SHOWN INSTALLED ON A FULLY
OPERABLE MACHINE WITH THE KEY AND ENGINE OFF
IDENT PART NO. LOC
UNLESS OTHERWISE SPECIFIED: ALL WIRES IN A SPLICE
NOTECHG
CIRCUIT GROUPING
DESIGNATION
#L
ATCH WIRE, CABLE,
COMPONENT
CIRCUIT NOT CONNECTED
CIRCUIT CONNECTED
BLUE
GREEN
BU
GN
RD
WH
OR
YL
PK
BK
BLADE, SPADE, RING,
OR SCREW TERMINAL
INTERNAL ELECTRICAL
CONNECTION TO SURFACE
OF COMPONENT
ELECTRICAL CONNECTION
CONNECTOR
SYMBOL DESCRIPTION
BROWN
PURPLE
GRAY
BLACK
COLORABBREV
PINK
YELLOW
ORANGE
WHITE
RED
C
C
C
C
C
L
L
T
A
H
H
H
C
TT
TT
03
02
02
01
03
8Y-5169
02
01
01
00
01
01
00
03
04
ATCH
02
02
04
04
04
B+
04
A6
BR
01
PU
04
04
GY
01
04
SYMBOLS
UNLESS OTHERWISE SPECIFIED: ALL WIRE IS 16 GAUGE
ARE THE SAME IDENT. NUMBER, COLOR, AND 16 GAUGE
TO MACHINE STRUCTURE
KEY START SW
IG P
CONN 11
CONN 2
CONN 1
CONN 3
CONN 5
CONN 4
CONN 6
CONN 14
CONN 15
CONN 17
CONN 16
CONN 10
CONN 12
CONN 13
CONN 18
CONN 9
CONN 7
CONN 8
THIS SCHEMATIC IS FOR THE D3C, D4C, D5C SERIES III
HYSTAT TRACK-TYPE TRACTOR, 933C AND 939C HYSTAT
TRACK-TYPE LOADER (113-8307 CHG 02)
POSITIONER & KICKOUT GP (933) 136-9027 & (939) 136-9028
KICKOUT
CONTROLLER
117-9364
SW 2 INPUT
SW 1 INPUT
SOL 2 OUTPUT
SOL 1 OUTPUT
GND
BAT.+
OR
BR
YL
GY
WH
RD
3
6
4
5
2
1
2
4
6
1
3
5
D718-GY
D719-OR
200-BK
200-BK
OR
WH BK
GN
761-GY
762-YL 200-BK
200-BK
TILT CYL SW
6S-8356
LIFT ARM SW
6S-5997
200-BK
200-BK
200-BK
128-PK
200-BK
761-GY
762-YL
D718-GY
D719-OR
200-BK
200-BK
D719-OR
D718-GY
TILT
LIFT
S
S
S
S
S
S
VALVE GP
139-5257
200-BK
200-BK
200-BK
S
L38 L38
L38
L37 L37
L37
L37
L36
L36L36
L36
L36
L36
L34
L34
L34
L34
L35
L25
L28
L20
L26
L39
L39
L37 L37
L31 L31
L21 L21
L30
L30 L30
L29
L29
L29
L10
L32
L32
L10
L32
L19
L18
L18
L26
L35
L25
L26
L21
L20
L24
L24
L35
L25 L25
L23
L23
L22
L21
L15
L15
L22
L26
L26
L28
L15
L22
L6
L20
L16
L17
L16
L8
L12
L16
L17
L19
L2
L6
L15
L11
L11
L14
L14
L14
L8
L12
L18
L15
L13
L1
L1
L2
L1
L2
L3
L5
L3
L3
L4
L4 L4
L4
L1
L2
L5
L1
L6
L1
L7
L6
L7
L1
L13
L12
L9
L10
L9
L9
L7
L6
L1
L33
L1
L6
L33
L8L8
L8
L14
L18
L14
L33
L39
L10
L10
L27
L26
L27
L27
L10
L19
WIRES THAT HAVE BATTERY VOLTAGE
WHEN THE KEY SWITCH IS OFF.
WIRES THAT HAVE BATTERY VOLTAGE
WHEN THE KEY SWITCH IS ON.
STARTING CIRCUIT.
GAUGE CIRCUIT.
PANEL LAMP CIRCUIT.
WASHER/WIPER CIRCUIT.
HEATER AND AIR CONDITIONER CIRCUIT.
GROUND CIRCUIT.
ENGINE SHUTDOWN CIRCUIT.
START AID CIRCUIT.
ALL DASHED LINES ARE ATTACHMENTS.
F
E
D
C
B
A
E02418
F
E
D
C
B
A
21 11 01 9 8 7
6
5 4
3 2
1
21 11 01 9 8 7
6
5 4
3 2
1
