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©2001 CaterpillarAll Rights Reserved Printed in U.S.A.
SENR8964-01February 2001
325B L ExcavatorElectrical System
2JR1-UP
Component LocationComponent Schematic
LocationMachine Location Component Schematic
LocationMachine Location
Actuator - Engine Governor A-9 1 Resistor - Timer Relay E-7 D
Air Inlet Heater C-8 2 Sender - Hydraulic Oil Temperature A-5 12
Alarm - Travel G-9 3 Sensor - Air Inlet Heater Coolant Temp. C-9 2
Alternator B-8 4 Sensor - Coolant Temperature C-8 2
Assembly - Terminal Block F-8 D Sensor - Fuel Level A-5 13
Batteries - 12VDC I-8,H-8 5 Sensor - Pump Discharge Pressure B-8 14
Breaker - Alternator I-8 D Sensor - Sun Load F-1 E
Breaker - Main I-8 D Solenoid - A/C Clutch C-9 15
Control - Engine/Pump F-2 C Solenoid - Engine/Pump Control A-7 16
Controller - Wiper/Washer E-1 A Solenoid - Engine Shutdown B-9 17
Converter - Voltage C-5 A Solenoid - Fine Swing E-7 18
Diode G-7 D Solenoid - Hydraulic Lock I-1 A
Diode - Main Relay G-7 D Solenoid - Level Finish A-7 16
Fuses I-4,5,6 B Solenoid - Start Aid H-9 19
Ground - Cab B-5 6 Solenoid - Swing Brake E-7 18
Ground - Cab E-1 E Solenoid - Travel Speed A-7 16
Ground - Chassis A-3 7 Solenoid - Trenching A-7 16
Ground - Chassis A-9 8 Switch - Air Cleaner Flow H-9 20
Ground - Chassis I-8 D Switch - Aux Hydraulic Pressure H-3 B
Ground - Platform G-2 B Switch - Backup EPR Valve E-5 C
Ground - Platform H-1 9 Switch - Backup Governor D-5 C
Ground - Relay Panel G-7 D Switch - Boom Raise Pressure D-8 18
Ground Strap - Chassis to Disconnect Sw. I-8 D Switch - Coolant Level H-9 19
Ground Strap - Chassis to Platform I-6 10 Switch - Disconnect I-8 D
Horn A-2 7 Switch - Engine Oil Level A-8 1
Lighter E-1 E Switch - Engine Oil Pressure B-9 15
Meter - Service F-1 E Switch - Fine Swing Control D-4 C
Monitor F-1 E Switch - Horn I-1 B
Motor - Lower Washer I-9 D Switch - Hydraulic Oil Filter A-5 12
Motor - Lower Wiper H-1 9 Switch - Hydraulic Oil Level A-5 12
Motor - Starter A-9 8 Switch - Implement Pressure D-8 18
Motor - Upper Washer I-9 D Switch - Key F-3 C
Motor - Upper Wiper C-5 6 Switch - Lower Washer D-4 C
Pickup - Engine Speed B-9 11 Switch - Lower Wiper D-3 C
Radio - 12VDC C-8,I-3 A Switch - Neutral Start Limit I-1 B
Relay - Boom Lamp I-7 D Switch - One Touch Low Idle F-2 C
Relay - Cab/Chassis Lamp I-7 D Switch - Refrigerant Low Pressure C-9 15
Relay - Heater F-7 D Switch - Start Aid D-5 C
Relay - Horn I-7 D Switch - Start Aid Coolant Temperature B-9 4
Relay -Hydraulic Lock Solenoid I-7 D Switch - Suction Line Shutoff Limit A-6 12
Relay - Main G-7 D Switch - Throttle Position E-3 C
Relay - Neutral Start F-7 D Switch - Travel Pressure D-8 18
Relay - Start F-8 D Switch Panel F-2 C
Relay - Timer E-7 D Unit - A/C, Heater G-5 21
Resistor - Backup I-8 D Unit - Air Inlet Heater Control I-7 D
Machine locations are repeated for components located close together.
A = Located inside of cab.B = Located inside of left console.
C = Located inside of right console.
D = Located around relay panel.
E = Located inside of dash.
Related Electrical Service ManualsForm Number
Alternator: (9W-3043) SENR4252
Electric Starting Motor: (6V-5821) SENR3581
(104-7040)
Consist: 6V-5720 SENR3581
Consist: 106-8557 SENR3859
Engine/Pump Control: RENR1998
Starting and Charging: SENR9292
Title
Resistor, Sender and Solenoid SpecificationsPart No. Component Description Resistance (Ohms)¹3E-6332 Solenoid: Start Aid 6.0
20824-25451 @ 0 °C (32 °F)
6134-7496 @ 25 °C (77 °F)
3989-4875 @ 35 °C (95 °F)
4I-5394 Sender: Hydraulic Oil Temperature 2224-2718 @ 50 °C (122 °F)
973-1189 @ 75 °C (167 °F)
475-522 @ 100 °C (212 °F)
221-269 @ 125 °C (257 °F)
7Y-8242 Resistor: Timer Relay 47.0 ± 4.7
8C-3663 Solenoid: Engine ShutdownStart (Latch) Coil - 1.55 ± 0.15Stop (Unlatch) Coil - 10.3 ± 1.03
102-8016 Resistor: Backup 47.0 ± 2.35
111-9916 Solenoid: Engine/Pump Control 11.7 ± 1.2
121-1490 Solenoid:Level Finish Trenching
32.0 ± 3.2
121-1491 Solenoid:Hydraulic Lock Swing Brake Travel Speed
32.0 ± 3.2
134-3998 Solenoid: A/C Clutch 17.6 ± 0.6
¹ At room temperature unless otherwise noted.
Connector Location
Connector NumberSchematic Location
Machine Location
CONN 1 A-9 1
CONN 2 F-9 D
CONN 3 F-9 D
CONN 4 G-9 D
CONN 5 G-9 D
CONN 6 G-8 D
CONN 7 G-8 D
CONN 8 G-8 D
CONN 9 F-8 D
CONN 10 C-6 A
CONN 11 C-5 A
CONN 12 C-5 A
CONN 13 C-4 A
CONN 14 F-5 C
CONN 15 F-5 C
CONN 16 F-5 C
CONN 17 F-5 C
CONN 18 F-4 C
CONN 19 F-4 C
CONN 20 F-4 C
CONN 21 F-4 C
CONN 22 H-5 B
CONN 23 H-5 B
CONN 24 H-4 B
CONN 25 H-4 B
CONN 26 H-4 B
CONN 27 H-4 B
CONN 28 H-3 B
CONN 29 H-3 B
CONN 30 C-3 A
CONN 31 B-3 7
CONN 32 A-3 13
CONN 33 B-2 7
CONN 34 D-2 CThe 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 SpecificationPart No. Function Actuate Deactuate Contact Position
27 °C
(80.6 °C)
70 ± 21 kPa A-B, Normally Open
(10 ± 3.0psi) A-C, Normally Closed
Implement Pressure 1225.0 ± 98.0 kPa 882.0 kPa MIN
Travel Pressure (177.67 ± 14.21 psi) (127.92 psi MIN)
2646 ± 196 kPa 2156 ± 196 kPa 1-2 Normally Open
(384 ± 28 psi) (313.00 ± 28.00 psi) 1-3 Normally Closed
490.00 ± 49.00 kPa 290.00 kPa MIN
(71.07 ± 7.11 psi) (42.06 psi MIN)
109-9330 Air Cleaner 635 ± 58 mm H2O - Normally Open
114-5333 Refrigerant Low Pressure275 to 1750 kPa¹ (39.9 to 253.8 psi)
--
Normally Open²
Hydraulic Pressure Normally Open
106-0179 Normally Open
106-0180 Boom Raise Pressure
¹ A hysteresis band exists: with increasing pressure the closed condition can be maintained up to 2800 kpa (405 psi), with decreasing pressure the closedcondition can be maintained down to 170 kpa (25psi).
² Contact position at the contacts of the harness connector.
3E-6449 Start Aid Coolant Temperature38 ±3°C
(100.4 ± 37.4°F)Normally Closed
3E-6455 Engine Oil Pressure90 ± 21 kPa(13 ± 3.0 psi)
106-0181
Wire DescriptionWire
NumberWire Color Description Wire
NumberWire Color Description
Power Circuits Accessory Circuits (Continued)
101 RD Battery (+) 512 GN Radio Speaker - Right (Common)103 RD Aux. Ckt. 513 OR A/C Compressor/Refrigerant Pressure Sw.105 RD Key Sw. 519 PK Thermostat to Refrigerant Pressure Sw.107 RD Engine Shutdown 546 BU Aux. Hydraulic - Rotate CW108 BU Aux. Ckt. 547 OR Aux. Hydraulic - Rotate CCW109 RD Alt Output (+) Term. 548 GY Aux. Hydraulic - Open111 RD Aux. Ckt. 549 PK Aux. Hydraulic - Close112 PU Main Power Relay Output 576 PK Wiper - Aux. (Low)113 OR Opr Mon Panel B (+) Switched 578 BU Washer - Aux.114 RD Warning Horn (Forward) 590 GY Wiper Sw. to Intermittent Module115 PK Aux. Ckt. 592 BU DC/DC Converter Power Output118 GY Aux Ckt. A513 RD DC/DC Converter Memory Output120 YL Aux. Ckt. A571 PU Aux. Ckt. #1123 WH Aux. Ckt. A572 PK Aux. Ckt. #2124 GN A/C A579 OR Wiper Motor (+)129 BU Aux. Ckt. A586 OR Wiper Sw. to Wiper Control140 BU Aux. Ckt. A588 GN Safety Solenoid Relay to Solenoid147 PU Aux. Ckt. C537 GN A/C Photo Sensor (+) Signal149 PU Aux. Ckt. C538 OR A/C Photo Sensor (-) Signal
150 RD Battery (+) Lighting Circuits
151 GN Aux. Ckt. 607 PK Flood Lamp- Front152 BU Aux. Ckt. 615 YL Cab Flood Lamp154 RD Aux. Ckt. 616 BU Boom Flood Lamp
168 RD Aux. Ckt. Control Circuits
172 RD Aux. Ckt. 763 BU Torque Converter Sw.177 RD Main Breaker 786 GN Engine Speed Control - Hi Pressure Sw.180 GN Aux. Ckt. 788 YL Engine Speed (+)185 YL Aux. Ckt. 791 PK Engine Speed Control - Low Solenoid189 RD Aux. Ckt. A718 PU Start Aid Coolant Sensor Signal191 WH Aux. Ckt. A755 PK Throttle Sw. #1
Ground Circuits A756 BU Throttle Sw. #2
200 BK Main Chassis A757 GY Throttle Sw. #3201 BK Operator Monitor Return A758 BR Throttle Sw. #4235 BK Electronic Pump Control Ground A761 PU Electronic Pump Control Ground
Basic Machine Circuits A762 PU Electronic Pump Control Engine Speed Ground
301 BU Starter No. 1 Sol A768 BU Pump Control Valve #1 (+)304 WH Starter Relay No. 1 Output A769 GY Pump Control Valve #2 (-)306 GN Starter Relay Coil A770 PK Electronic Pump Control Bypass Sw.307 OR Key Sw. to Neutral Start Sw. A771 PU Float Sw.308 YL Main Power Relay Coil F771 OR Backup Sw.309 GY Alternator (R) Term. F772 WH Backup Sw.310 PU Start Aid Sw. to Start Aid Sol F773 OR Governor Accel.311 WH Start Aid Sol to Temp Sw. F774 WH Governor Decel.320 OR Horn Relay Coil to Sw. 877 YL Glow Plug Magnetic Sw. to Glow Plug321 BR Travel Alarm 961 BR Selector Sw.322 GY Warning Horn (Forward) K904 GN Pump Discharge - Signal326 RD Key Sw. "C" Term. K905 RD Pump Discharge - +B386 PK Air Shutoff Solenoid Enable K906 GN Swing Brake Solenoid - Signal
Monitoring Circuits K907 BU Swing Brake Solenoid - +B
403 GN Alternator (R) Term. K909 BU Backup Sw. - +B405 GY Opr. Mon. Oil Press. (Low Setting) K911 PK E/P Controller - RS485 (+)412 BU Opr. Mon. Cool Flow K912 GN E/P Controller - RS485 (-)430 BU Opr. Mon. Air Filter K915 GN Fine Swing Sw. - E/P Controller487 OR Hydraulic Oil Flow Switch K997 BU +V Sensor491 PK Hydraulic Oil Temperature Sensor L908 OR Controller RS-232C TX492 GY Coolant Temperature Sensor Signal L909 BU Controller RS-232C RX495 GN Fuel Level Sensor L968 OR Electronic Pump Control PS Valve (-)496 WH Opr. Mon. Panel Hydraulic Oil Level L969 OR Electronic Pump Control PS Valve (+)
A495 GY Alternator (R) Terminal # 2 L970 GY Electronic Pump Control to Sw. CommonC468 BU Engine Oil Level L971 GN Electronic Pump Control to Travel Pressure Sw.
Accessory Circuits L972 BU Low Idle Sw.
501 GN Wiper - Front (Low) L973 GN Fine Swing Control Relay to Solenoid Valve506 PU Washer - Front L974 GN Electronic Pump Control Boom Raise Pressure Sw.508 PU Radio Speaker - Left L975 PK Start Aid Control Lamp 1 Output509 WH Radio Speaker - Left (Common) L977 YL Trenching Solenoid511 BR Radio Speaker - Right L978 GY Level Finish Solenoid
Code Description of Problems1301 Engine oil pressure is too low.
1302 Engine coolant temperature is too high.
1303 Hydraulic oil temperature is too high.
1304 Air filter is clogged.
1305 Battery voltage is not normal.
2201 Governor actuator feedback sensor circuit is open or shorted to battery voltage.
2202 Governor actuator feedback sensor circuit is shorted to body ground.
2301 Governor actuator feedback signal is not stable.
2302 Governor actuator feedback signal deviates.
2303 Governor actuator does not move.
2304 Calibration data error.
3201 Monitor RAM is not normal.
4101 Electric power supply to the controller is too much (43 volts).
4102 Over-current in proportional reducing valve.
4103 Proportional reducing valve circuit is open.
4105 Over-current in digital output (trenching solenoid).
4106 Over-current in digital output (fine control solenoid).
4107 Over-current in digital output (travel speed change solenoid).
4108 Over-current in digital output (travel alarm).
410A Over-current in digital output (swing brake solenoid).
4201 Engine speed is not normal.
4202 Engine coolant temperature sensor is shorted to body ground.
4203 Hydraulic oil temperature sensor is shorted to body ground.
4204 PWM sensor of pump delivery pressure is shorted to body ground.
4207 PWM sensor of pump delivery pressure is open in circuit.
420A Fuel sensor is shorted to body ground.
420B Fuel sensor is open or shorted to battery voltage.
420C Electric power supply is too low (below 23 volts).
420D Electric power supply is too high (above 32 volts).
420E Engine speed dial is not in one of the 10 specified positions.
4301 Data mismatch 1 between alternator and speed sensor (alternator is abnormal).
4302 Data mismatch 2 between alternator and speed sensor (speed sensor is abnormal).
4303 Engine stalls.
A201 Monitor communication is not normal.
A202 Monitor takes too much time to respond to controller's signal.
A203 Communication is abnormal in controller.
Real Time Error Codes
1
2
T
This indicates that the component does not have a wire connected to ground. It is grounded by being fastened to the machine.
This indicates that the component has a wire connected to it that is connected to ground.
105-9344
T
Normally open switch that will close with an increase of a specific condition (temp-press-etc.).The circle indicates that the component has screw terminals and a wire can be disconnected from it.
Pin SocketFuse
Component Part Number
Pin or Socket Number
Receptacle
Plug
Wire, Cable, or Harness Assembly Identification
Normally closed switch that will open with an increase of a specific condition. No circle indicates that the wire cannot be disconnected from the component.
Single Wire
Ground
ConnectionConnector
PressureSymbol
TemperatureSymbol
LevelSymbol
FlowSymbol
Circuit BreakerSymbol
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.
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 Symbols
Electrical Schematic Symbols And Definitions
1 12 2
Typical representation of aSure-Seal connector. The plugand receptacle containboth pins and sockets.
Typical representation ofa Deutsch connector. Theplug contains all socketsand the receptacle containsall pins.
325-A135 PK-14
AG-C4111-7898
L-C123E-5179
C-C4130-6795
** * *
*
CircuitNumberIdentification
WireColor
WireGauge
AG-C3130-6795
Harness identification letter(s) and aserializing code. The "C" stands forconnector and the number indicateswhich connector in the harness.
200-L32 BK-14
325-A135 PK-14
Part Number For Connector Assembly
Harness identification codeThis example indicateswire 135 in harness "AG".
Machine Harness Connector and Component Locations
A3
4
6
9
10
11
14
15
13
16
B
C
D
E
1
2
17
18
19
20
21
7
B
C
D
E
A
3
4
5
6
81
2
7
10
11
14
15
13
16
8
9
12
17
18
19
20
21
5
12
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.
MONITOR CIRCUIT.
WASHER/WIPER CIRCUIT.
HEATER AND AIR CONDITIONER CIRCUIT.
GROUND CIRCUIT.
START AID CIRCUIT.
ENGINE/PUMP CONTROL.
ALL DASHED LINES ARE ATTACHMENTS.
107-RD
320-OR-18
I
1
112-PU-6
J704-WH-18
L52
615-YL
J704-WH-18
200-BK-18
J
CBA
320-OR-18
151-GN-18150-RD-18
154-RD-18
546-BU-18546-BU-18154-RD-18
189-RD172-RD-18
J
J
L15
L17
NEUTRAL STARTLIMIT SW111-4799
HORN SW128-2134
200-BK-18
235-BK-14200-BK-14
103-RD-18506-PU-18403-GN-18
A771-PU-18
788-YL-18A762-PU-18763-BU-18412-BU-18
C468-BU-18321-BR-18405-GY-18492-GY-18491-PK-18495-GN-18430-BU-18496-WH-18
K904-GN-18A761-PU-18487-OR-18
235-BK-14
200-BK-14
200-BK-18
786-GN-18791-PK-18308-YL-18
151-GN-18
118-GY512-GN-18511-BR-18509-WH-18
103-RD-18
519-PK-18
113-OR-18185-YL-18
105-RD
147-PU-18
140-BU149-PU
151-GN-18
320-OR-18
107-RD
112-PU-6112-PU-14112-PU-14112-PU-14112-PU-14112-PU-14
149-PU140-BU
200-BK-18200-BK-18200-BK-14
147-PU-18
200-BK-18
H
M
MN (NOTE D)
F
3 2
L971-GN-18
L977-YL-18L974-GN-18L978-GY-18
306-GN-18
177-RD-14177-RD-14
177-RD-14177-RD-14
112-PU-14
152-BU
191-WH-14
191-WH-14
J704-WH-18
308-YL-18
113-OR-18
123-WH-14
123-WH-14
113-OR-18
308-YL-18
615-YL
308-YL-18
200-BK-18
200-BK
A
10 12 7 9 11
191-
WH
-14
200-
BK
-14
L970
-GY-
18
PLATFORM
A
L8L970-GY-18
L8
L20
115-PK-14
200-BK-14200-BK-18
J704-WH-18547-OR-18
A588-GN-18
J
115-PK-14
111-RD-14
200-
BK
-18
A
12 VDC RADIO103-8525
150-RD-18
C538-OR-18
200-
BK
-18
RH SPKR (-)
C537-GN-18A513-RD-18592-BU-18
154-RD-18
189-RD172-RD-18
L22
RH SPKR (+)LH SPKR (-)
K905-RD-14
LH SPKR (+)
L22
111-RD-14
150-RD-18
519-PK-18
200-BK-18
L970
-GY-
18
LAMP126-7487
200-BK-14
A
A152-BU C
B
200-BK-14200-BK-14
547-OR-18
J704-WH-18
GND
A
CONV (OUT)
576-PK
CONV (MEM)
21
L21
L20
PLATFORM120-YL
L19
114-RD
114-RD
HYDLOCK SOL121-1491
L15
L14
N
200-BK615-YL
129-BU
L15
L975-PK-18
K997-BU-18
326-RD
L21
L19
L3
L3
OPERATOR STATION
108-BU
MN (NOTE D)
2 1
LOWERWIPER MOTOR131-0398
+
+1-
MOTOR
615-YL
AUX HYDPRESS SW106-0181
200-
BK
508-PU-18
CONN 29
140-
BU
149-
PU
147-
PU
-18
105-
RD
107-
RD
103-
RD
-18
191-
WH
-14
115-
PK
-14
120-
YL
118-
GY
124-
GN
-14
512-
GN
-18
511-
BR
-18
508-
PU
-18
509-
WH
-18
519-
PK
-18
124-
GN
-14
113-
OR
-18
185-
YL-
1810
5-R
D
118-
GY
124-
GN
-14
147-
PU
-18
200-
BK
-18
103-
RD
-18
140-
BU
149-
PU
151-
GN
-18
320-
OR
-18
107-
RD
112-
PU
-14
112-
PU
-14
112-
PU
-14
112-
PU
-14
112-
PU
-14
112-
PU
-14
191-
WH
-14
200-
BK
-18
320-
OR
-18
111-
RD
-14
189-
RD
-14
112-
PU
-14
112-
PU
-14
185-
YL-
18
112-
PU
-14
112-
PU
-14
112-
PU
-14
107-
RD
103-
RD
-18
105-
RD
149-
PU
191-
WH
-14
118-
GY
124-
GN
-14
120-
YL
A
3 7 91 115
2 14 356
A
J
12 11 10 6 1 3527894
J
A
4
177-
RD
-14
177-
RD
-14
177-
RD
-14
177-
RD
-14
147-
PU
-18
118-GY124-GN-14
12 410 26
149-PU140-BU
105-RD107-RD
103-RD-18
147-PU-18115-PK-14
120-YL
191-WH-14
10A10A15A10A10A10A
15A
CAB/CHASSIS LAMPRADIOLOWER WASHER/WIPERWASHER/WIPER
CIGAR LIGHTERA/C /HEATER
HORN
A
15A
DOME LAMP
KEY SW
BOOM LAMPFINE SWING
SHUTDOWN
ATCH LUBRICATOR
JJ
FUSE BASE111-4812
L10
546-
BU
-18
1 8 62
J704
-WH
-18
547-
OR
-18
54
152-
BU
J704
-WH
-18
961-
GN
-18
152-
BU
3
549-
PK
-18
548-
GY-
18
152-
BU
J704
-WH
-18
546-
BU
-18
547-
OR
-18
A
J704
-WH
-18
129-
BU
120-
YL
113-
OR
-18
123-
WH
-14
C53
8-O
R-1
8C
537-
GN
-18
A51
3-R
D-1
8
592-
BU
-18
A
J
8 7 5 4 3 2
L52
L20
547-
OR
-18
115-
PK
-14
K90
5-R
D-1
4
150-
RD
-18
154-
RD
-18
172-
RD
-18
L39
L38
L37
L37
L38
177-RD-14
L39
115-
PK
-14
172-
RD
-18
189-
RD
154-
RD
-18
150-
RD
-18
111-
RD
-14
K90
5-R
D-1
4
L20
L22
L34
168-RD
114-RD
AUX CKT
J704
-WH
-18
113-
OR
-18
113-
OR
-18
129-
BU
129-BU
SWITCH PANEL113-OR-18
546-
BU
-18
114-
RD
151-
GN
-18
308-
YL-
18
3412
308-
Yl-1
8
L10
L970
-GY-
18
21875643
508-PU-18509-WH-18511-BR-18
J
512-GN-18
200-
BK
-18
J
152-BU
ATCH HYD CTL
J
HYD OIL FILTER SW113-OR-18
A513-RD-18
ANTENNA CABLE134-4430
592-BU-18
200-BK-18
L24
168-
RD
177-RD-14
L17
L15
L24
123-
WH
-14
108-
BU
1
114-
RD
140-
BU
6
113-
OR
-18
113-
OR
-18
129-
BU
108-
BU
J
114-
RD
200-
BK
-18
592-
BU
-18
A51
3-R
D-1
851
2-G
N-1
851
1-B
R-1
850
9-W
H-1
850
8-P
U-1
8
78126543
CONN 23 CONN 24 CONN 25 CONN 26 CONN 27
CONN 28
200-BK
A770-PK-18
200-BK
185-YL18
200-BK-18320-OR-18
151-GN-18
200-BK-18200-BK-18
791-PK-18A770-PK-18
K90
9-B
U-1
8A
770-
PK
-18
791-
PK
-18
615-
YL
200-
BK
-18
151-
GN
-18
A58
8-G
N-1
8
320-
OR
-18
786-
GN
-18
149-
PU
616-
BU
A71
8-P
U-1
8
306-
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310-
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200-
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308-
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311-
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1
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COOLANTLEVEL SW096-0744
MOTOR
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LOWER WASHER7T-8890
BATTERY3T-5760
POS NEGNEGPOS
ATCHBATTERY3T-5760(NOTE C)
200-
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200-
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9-B
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9 8 7 6 5
DISCONNECT SW.7N-0719
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BACKUPRESISTOR102-8016
HYD LOCK SOL RELAY111-4871
506-PU-18
CAB/CHASSIS LAMP RELAY111-4871578-BU-18
60A
200-BK-18
200-BK-18 MOTORA
HORN RELAY111-4871
BOOM LAMP RELAY111-4871
A
DIODE121-1022
KE
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177-
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177-RD-14
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177-RD-14177-RD-14
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RD
-6
109-
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-6
101-
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172-RD-18
111-RD-14
101-
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1-R
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185-YL-18
112-PU-14112-PU-14
180-GN
189-RD-14
8
ENG GOVPLATFORMCHASSIS
GROUND STRAP7G-1060
10A
FUSE10A 9W-144215A 9W-1441
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10A10A10A10A10A10A10A
10A10A10A10A
15AE/P CONT
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306-GN-18
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114-RD
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CC
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RELAY PANEL
115-PK-14
114-RD-18114-RD-18
150-
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115-
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150-RD-18
306-
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177-RD-14
320-
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-18
200-
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-18
412-
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K905-RD-14
150-RD-18
150-RD-18150-RD-18
150-RD-18150-RD-18
154-RD-18
L40
L17
L15
L17
L38
L37
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108-BU
L40
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180-
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168-
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112-
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172-RD-18
114-RD
123-WH-14
123-WH-14
ATCH FAN108-BU
607-PK322-GY
322-
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322-
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114-
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607-
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147-PU-18
F774-WH-18F773-OR-18A761-PU-18K904-GN-18430-BU-18
K906-GN-18A771-PU-18
763-BU-18
112-PU-6
K909-BU-18
151-GN-18
308-YL-18307-OR-18
791-PK-18615-YL
786-GN-18149-PU
320-OR-18
200-
BK
-14
519-
PK
-18
590-
GY-
1850
1-G
N-1
8A
586-
OR
-18
786-
GN
-18
791-
PK
-18
113-
OR
-18
308-
YL-
18
307-
OR
-18
105-
RD
A75
8-B
R-1
8A
757-
GY-
18A
756-
BU
-18
A75
5-P
K-1
8
578-
BU
-18
K91
5-G
N-1
8
310-
PU
-18
A76
9-G
Y-18
A76
8-B
U-1
8K
906-
GN
-18
185-
YL-
18K
909-
BU
-18
K90
7-B
U-1
8A
770-
PK
-18
F77
2-W
H-1
8F
774-
WH
-18
F77
3-O
R-1
8F
771-
OR
-18
615-YL-18 615-YL615-YL
A586-OR-18501-GN-18590-GY-18
124-
GN
-14
200-BK
K909-BU-18
A588-GN-18
151-GN-18
308-YL-18307-OR-18
791-PK-18615-YL
RELAY PANEL
786-GN-18
200-BK-18200-BK-18200-BK-18200-BK-18200-BK-18
309-
GY-
18
308-YL-18
A718-PU-18616-BU149-PU
786-GN-18
320-OR-18
A588-GN-18
151-GN-18200-BK-18200-BK-18200-BK-18
615-YL
200-BK-18
149-PU
200-
BK
-18
K909-BU-18
307-OR-18
386-PK-18200-BK-18
K909-BU-18
200-BK-18200-BK-18
306-GN-18
306-GN-18308-YL-18
308-
YL-
18
G
1112
12345678910
12
321-BR-18200-BK-18
AIR CLEANER SW109-9330
TRAVEL ALARM3E-7738
B
12
320-OR-18
A770-PK-18
200-
BK
-18
308-
YL-
1830
8-Y
L-18
A588-GN-18
151-GN-18
308-YL-18307-OR-18
791-PK-18615-YL
308-
YL-
18
786-GN-18149-PU
320-OR-18
A770-PK-18
K909-BU-18200-BK
F
A718-PU-18386-PK-18309-GY-18
616-BU
UUVV
546312
5
34
6
21
789101112
MAIN RELAY3T-0376
4 5 6
3
12
21
7
11
89
10
DIODE121-1022
200-
BK
-18
306-
GN
-18
177-
RD
-8
A718-PU-18386-PK-18
309-GY-18616-BU
306-GN-18
304-WH-8
877-YL-4
101-RD-4
L975-PK-18
L975-PK-18
L975-PK-18
L975-PK-18
L973-GN-18
L977-YL-18L978-GY-18L974-GN-18
L969
-WH
-18
L968
-OR
-18
L973
-GN
-18
L972
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-18
A769-GY-18491-PK-18496-WH-18495-GN-18
403-GN-18788-YL-18
A762-PU-18C468-BU-18405-GY-18492-GY-18519-PK-18
321-BR-18412-BU-18
306-GN-18
306-GN-18
615-YL-18
306-GN-18
487-OR-18
310-PU-18
107-RD103-RD-18
177-RD-14177-RD-14
177-
RD
-14
177-
RD
-14
310-PU-18
310-PU-18
200-
BK
-18
177-RD-14
200-BK-18
306-
GN
-18
200-
BK
-18
308-
YL-
18
177-
RD
-6
K90
9-B
U-1
8
307-
OR
-18
200-
BK
-18
177-
RD
-14
115-PK-14
177-RD-14177-RD-14
112-
PU
-6
200-
BK
-18
386-
PK
-18
386-PK-18
8965
1211
4
10
10
98
12
76
11
5
21
4321
3
7
307-OR-18
A75
5-P
K-1
8A
756-
BU
-18
A75
7-G
Y-18
A75
8-B
R-1
8L9
72-B
U-1
8
308-
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18F
771-
OR
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F77
2-W
H-1
8L9
69-W
H-1
8L9
68-O
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915-
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-18
K90
7-B
U-1
8
200-BK-18
308-YL-18200-BK-18
112-PU-6
A A
7 81 65432
H H
304-WH-8
68 17 4 5 3 2
152-
BU
152-
BU
177-
RD
-8
114-RD
200-
BK
-18
A
1 64 32
A/CUNIT152-5085
177-
RD
-8
L971-GN-18
115-PK-14
154-RD-18
111-RD-14
150-RD-18
K997-BU-18
189-RD
154-RD-18
111-RD-14
150-RD-18
BB
B
A
A
L45
L15
L50
D
D
DA
A
A
L48L47
189-RD
154-RD-18
111-RD-14
150-RD-18
115-PK-14
A495-GY-18
A495-GY-18
150-RD-18
114-RD
154-RD-18
189-RD111-RD-14
306-GN-18
306-GN-18
C53
8-O
R-1
8C
537-
GN
-18
308-
YL-
18
576-
PK
5
310-PU-18
877-YL-4101-RD-4
386-PK-18
326-RD
A768-BU-18
172-RD-18
WW
306-
GN
-18
200-
BK
-18
200-
BK
-18
177-
RD
-14
200-BK-18
321-
BR
-18
200-BK-18
430-
BU
-18
412-
BU
-18
306-
GN
-18
310-
PU
-18
311-
WH
-18
430-
BU
-18
200-
BK
-18
A49
5-G
Y-18
111-
RD
-14
189-
RD
154-
RD
-18
154-RD-18 310-
PU
-18
200-
BK
-18
105-
RD
F77
3-O
R-1
8F
774-
WH
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A77
0-P
K-1
8A
769-
GY-
18A
768-
BU
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K90
6-G
N-1
8
615-
YL-
18
L973
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-18
578-
BU
-18
307-
OR
-18
308-
YL-
18
791-
PK
-18
786-
GN
-18
185-
YL-
18
113-
OR
-18
A58
6-O
R-1
850
1-G
N-1
859
0-G
Y-18
200-
BK
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607-PK
322-GY
K90
9-B
U-1
8
607-PK
L18
430-BU-18310-PU-18
12 110 8 11 12 9 10 11 4321 982 7654321 4 5 61 7 3
3
HH
AA
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2
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4
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306-GN-18A718-PU-18309-GY-18
616-BU
304-WH-8877-YL-4101-RD-4
ANTENNACABLE8R-6111
322-GY607-PK
21
IN 1
L21
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UU
L19
ZZ
YYJJ
XXWW
1218
2
1011
34
9
TIMER RELAY111-4870
7
6
XX
5
615-
YL-
18
NEUTRALSTART RELAY111-4871
START RELAY125-1302
L21
L18
L34
L34
L8
L19L3
L4
L25
L25
L4
L21
JJ KK
L20
109-RD-6607-PK
1 2
24
HEATERRELAY116-0114
KK
B
BA
A
109-RD-6
L48
L47
L47
L48
A
B
B
B
B
DB
L51
L49
L51
L49
961-
GN
-18
32118
0-G
NA
571-
PU
H
A57
2-P
K
A57
2-P
KA
571-
PU
326-
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180-
GN
961-
GN
-18
961-
GN
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200-
BK
-14
326-
RD
576-
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BLOCK121-1023
L45
L49
113-OR-18140-BU
123-WH-14
J704-WH-18
615-YL
114-RD
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+B CO
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115-PK-14J704-WH-18
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615-YL
607-PK322-GY
B
CONN 2
CONN 3
CONN 4
CONN 5
CONN 9
CONN 8
CONN 7
CONN 6
CONN 14
CONN 15CONN 16 CONN 17 CONN 18 CONN 19
CONN 20
307-OR-18578-BU-18
K906-GN-18A768-BU-18A769-GY-18A770-PK-18F774-WH-18F773-OR-18K909-BU-18310-PU-18
A588-GN-18A588-GN-18
200-
BK
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200-
BK
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200-
BK
-18
200-
BK
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200-BK-18200-BK-18
G
F
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L973-GN-18
ENG/PUMP CONT151-9375
L971-GN-18L970-GY-18
L977-YL-18L974-GN-18
L969-WH-18403-GN-18
MONITOR +B OUT
L968-OR-18
A761-PU-18
L978-GY-18
763-BU-18
A771-PU-18K997-BU-18
788-YL-18A762-PU-18
412-BU-18
430-BU-18
321-BR-18405-GY-18492-GY-18491-PK-18495-GN-18
496-WH-18
576-PK
C468-BU-18
K907-BU-18
K904-GN-18
EPR VALVE (+)
GOV ACTR FDBK
COOLANT LEVEL SWTRAVEL SPEED SOLENG SPEED SENSOR (-)ENG SPEED SENSOR (+)
TRENCHING SOLIMPLEMENT PRESS SW
ENG OIL LEVEL SW
FUEL LEVEL SENSOR
FRONT PUMP PRESS SENSORHYD OIL LEVEL SWAIR CLEANER SENSOR
HYD OIL TEMP SENSORCOOLANT SENSOR
9
28
31261330293540 2
6
39
24252215
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738
12
TRAVEL ALARMENG OIL PRESS SW
36
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23
EPR VALVE (-)
17
21 8
27
18 TRAVEL PRESS SW
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AUX HYD PRESS SW
A
37
4 3
OPTION SENSOR (PWM)
1
1619
5
OPTION SENSOR (PWM)
3233
DEGITAL OUT (-)DEGITAL OUT (-)
14
11
34
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L10
549-
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548-
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18
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200-BK-18
L8L8L18
200-
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200-
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200-
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L13L12
L11
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308-YL-18
L3L19
L21L20
4
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1 32
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118-GY
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615-YL-18
A756-BU-18A755-PK-18
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5432
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548-
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18
200-BK-18
200-BK
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326-RD
200-BK-18
200-BK200-BK-18
129-BU
K911-PK-18
590-GY-18
308-YL-18
403-GN-18
A579-OR
C538-OR-18C537-GN-18
200-
BK
-14
200-BK-18
615-YL
L972-BU-18200-BK-18
308-YL-18
200-BK-18113-OR-18791-PK-18786-GN-18
A586-OR-18501-GN-18590-GY-18
615-YL
6
L11
L12
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L6E
E
E
+
HONE TOUCHLOW IDLE SW128-2134
200-BK-18
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WASHW. LOWW. INT
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200-BK200-BK-18
200-BK
L21
L19L3
L18
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L12
L11
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K997-BU-18
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SW INPUT
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COM
M
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MONITOR151-9385
SWITCH PANEL111-4800
KEY SW9G-7641
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SUN LOADSENSOR128-2162
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THROTTLEPOS SW106-0107
EE
R
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WIPER/WASHERCONTROLLER127-9838
615-YL
OFF
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506-PU-18
CONN 21
E
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B
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200-BK-18311-WH-18
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200-BK-18
A761-PU-18
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200-BK-18
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8
200-BK-18200-BK-18
200-
BK
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200-BK-18200-BK-18
A769-GY-18A768-BU-18
763-BU-18
200-BK-18200-BK-18200-BK-18
A76
8-B
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GY-
18
101-RD-4304-WH-8
311-WH-18403-GN-18
309-GY-18492-GY-18
A718-PU-18877-YL-4
A762-PU-18788-YL-18405-GY-18
F774-WH-18F773-OR-18A761-PU-18
C468-BU-18
200-
BK
-420
0-B
K-1
820
0-B
K-6
200-BK-4
A718-PU-18200-BK-18
492-GY-18200-BK-18
309-GY-18
403-GN-18
200-BK-6
200-
BK
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405-GY-18788-YL-18A762-PU-18
304-WH-8
RD-00RD-00
200-BK-4200-BK-6200-BK-10
200-BK-18200-BK-18200-BK-18
200-BK-18
301-BU-10
513-OR-18200-BK-18
200-BK-10301-BU-10
405-GY-18200-BK-18
788-YL-18A762-PU-18
101-RD-4
L977-YL-18
L978-GY-18
L978
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18
763-
BU
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L977
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18
200-
BK
-18
200-
BK
-18
200-
BK
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326-RD
200-
BK
-18
200-BK-18
200-BK-18200-BK-18
200-BK-18200-BK-18200-BK-18
877-YL-4
326-RD
K99
7-B
U-1
8
ATCH START AIDCOOLANT TEMP SW.3E-6449
21
B
T°
AIH COOLANTTEMP SENSOR125-4812
B
21
PUMP DISCHARGEPRESS SENSOR106-0178
SIG
NA
LG
RO
UN
DB
K-1
8B
R-1
8Y
L-18
BC
107-9652
T°
B
GND
F/B+B
ACCEL
B B
B
BK
-00
C
21
DECEL6
B
B
ENG GOVACTUATOR106-0126
HH
CB
BB
CC
C
C
C
KEY
ALTERNATOR9W-3043
ENG OIL LEVEL SW111-4759
12
21
B
T°
COOLANT TEMPSENSOR4I-5394
CB
BATMTR
SG
B
STARTERMOTOR104-7040
B-
21
ENGSHUTDOWN SOL8C-3663
ENG OILPRESS SW3E-6455
CHASSIS
BK-18RD-18
ENG SPEEDPICKUP6V-2455
A
CBA
BU-18
B+RD ALT
A/C CLUTCHSOL134-3998 (NOTE E)
MOTOR
B
12
B
6
BBBB212
1
ENG/PUMP CONTSOL111-9916
LEVEL FINISHSOL121-1490
TRENCHING SOL121-1490
TRAVEL SPEEDSOL121-1491
122
9 8 7
1
43
54
5
3
L44
L43
L44
B CHASSIS
L42 L4
1L2
9 L30
C
EE
AA
L43
L43
B
CHASSIS
L28
L30
L29
L41L4
2
L42
L41
2341
1432306-GN-18
ATCHSUCTION LINESHUTOFF LIMIT SW3E-5181
41 2
3
K909-BU-18
308-YL-18308-YL-18
200-BK-18
200-BK-18
SPEAKER (L)6T-7695
SPEAKER (R)6T-7695
F
F
200-BK-18
K906-GN-18200-BK-18
189-RD
177-RD-14111-RD-14
A495-GY-18
RELAY PANEL
200-BK-18
L974-GN-18K906-GN-18
200-BK-18200-BK-18200-BK-18200-BK-18
L974-GN-18200-BK-18
200-BK-18
200-BK-18
L971-GN-18A771-PU-18L974-GN-18K906-GN-18
495-GN-18616-BU
496-WH-18487-OR-18491-PK-18306-GN-18386-PK-18
L977-YL-18763-BU-18
L978-GY-18A768-BU-18A769-GY-18K904-GN-18K997-BU-18
A761-PU-18F773-OR-18F774-WH-18
326-RD
172-RD-18
519-PK-18
REFRIGERANTLOW PRESS SW114-5333 (NOTE A) (NOTE E)
513-OR-18519-PK-18
405-GY-18
PK
788-YL-18
12
C
A762-PU-18C468-BU-18
109-RD-6
101-RD-4304-WH-8
309-GY-18492-GY-18
A718-PU-18877-YL-4
311-WH-18
B
ANTENNA8E-1118
200-BK-18495-GN-18
616-BU
200-BK-18
311-WH-18321-BR-18412-BU-18
12 VDC RADIO3E-7140(NOTE F)
L973-GN-18147-PU-18
OUT 1+B
IN 2OUT 2
AB
13
RESISTOR7Y-8242
21
B
403-GN-18109-RD-6
519-PK-18
FINE SWINGSOL116-3526
BOOM RAISEPRESS SW106-0180
12
B
21
21
B
21
B
SWINGBRAKE SOL121-1491
IMPLEMENT PRESS SW106-0179
TRAVELPRESS SW106-0179
172-RD-18
322-GY607-PK
L50
L51
113-OR-18
L45
L44
L42
L41
L29
L30
L44
L42
L41
L29
L30
L30L29
L41
L30
L29L28
-
+
-
+
512-GN-18511-BR-18
509-WH-18508-PU-18
OR
109-RD-6
326-RD
L42
WH-18WH-18
WH-18WH-18
B
L44
B
6V-5821 (NOTE C)
+B
L45
607-PK
L971-GN-18
A771-PU-18
L971-GN-18A771-PU-18
L44
172-RD-18
519-PK-18
322-GY
607-PK607-PK
AIR INLET HEATER
CONN 1
103-RD-18
403-GN-18403-GN-18
403-GN-18403-GN-18
308-
YL-
18
A75
8-B
R-1
8A
757-
GY-
18A
756-
BU
-18
A75
5-P
K-1
8
K91
5-G
N-1
8F
771-
OR
-18
F77
2-W
H-1
8K
907-
BU
-18
103-RD-18
200-BK-14200-BK-14
403-GN-18
200-BK-14
6 5 4
D
3 2 1
C
B
A
200-BK-18
487-OR-18200-BK-18
L972-BU-18
L969
-WH
-18
L968
-OR
-18
L972
-BU
-18
495-GN-18
AD 128-8936
NOTE E : REM'D WITH ATCH HEATER OPTION.
496-WH-18200-BK-18
BKYL
BHYD OILFILTER SW143-7966GROUND
SIGNAL+B
CB
A
BB
B
HYD OILTEMP SENDER4I-5394
FUEL LEVELSENSOR105-9911 2
1
HYD OILLEVEL SW111-4760
2
T°
1
B
200-BK-14200-BK-14
K912-GN-18K911-PK-18
403-GN-18
615-YL-18
K911-PK-18K912-GN-18A586-OR-18590-GY-18501-GN-18
200-BK-14103-RD-18
118-GY
615-YL-18
403-GN-18
200-BK-14
103-RD-18512-GN-18511-BR-18509-WH-18508-PU-18
615-YL
615-YL
506-PU-18
590-GY-18501-GN-18
A586-OR-18
103-RD-18103-RD-18
509-WH-18511-BR-18512-GN-18
118-GY
103-RD-18
506-PU-18
118-
GY
A755-PK-18A756-BU-18A757-GY-18A758-BR-18308-YL-18
L975-PK-18
615-YL
NOTE C : USE WITH COLD WEATHER.
ZZ 111-4831
235-BK-18235-BK-18
F772-WH-18F771-OR-18
K915-GN-18
K911-PK-18K912-GN-18
L909-BU-18L908-OR-18
487-OR-18
K90
5-R
D-1
8
235-BK-18
512-
GN
-18
511-
BR
-18
509-
WH
-18
508-
PU
-18
THROTTLE DIAL S1THROTTLE DIAL S2THROTTLE DIAL S3THROTTLE DIAL S4
GOV ACTR (A)GOV ACTR (B)
RS485 - (VALVE CONT)RS485 + (VALVE CONT)
RS232C (GND)RS232C (RX)
2010
6 RS485 - (RH JOYSTICK)RS485 + (LH JOYSTICK) 7
CAB
8 RS485 - (LH JOYSTICK)RS485 + (PEDAL) 9
10
RS485 + (SEMI AUTO)
RS485 - (PEDAL)RS485 + (RADIO CONT)17
HYD TANK PRESS. SW
RS485 + (MONITOR)
RS485 - (SEMI AUTO)
HYD TANK INDICATOR
RS485 + (RH JOYSTICK)
RS485 - (MONITOR)
HYD OIL FILTER INDICATOR
18 RS485 - (RADIO CONT)RS485 + (ELEC GOV)19
+B+B
AIH INDICATOR
FINE SWING SW
3233
25
KEY SW ON
RS485 - (ELEC GOV)
26
12
40
2
4
2827
LOW IDLE SW
21
20
11122
343
242314131615
5
3635
29
3130
39
38
37
GNDGND
HAMMER PRESS. SW
RS232C (TX)
KEY SW START
DOME LAMP162-7755
2 3 4 5 61 87
21 8 3 547 6
431 2
F
F
E E
A
A A
L7
A
A
3 14 2
576-
PK
129
-BU
403-
GN
-18
615-
YL-
1810
3-R
D-1
8
C53
8-O
R-1
8K
997-
BU
-18
1211109K
912-
GN
-18
K91
1-P
K-1
8
501-
GN
-18
C53
7-G
N-1
8
590-
GY-
18
UNLESS OTHERWISE SPECIFIED ALL WIRE IS 16 GAGE.
COMPONENTS ARE SHOWN INSTALLED ON A FULLYOPERABLE MACHINE WITH THE KEY AND ENGINE OFF.
JJ 111-4832HH 7Y-8298GG 116-0242 FF 116-0080 EE 125-4767 CC 125-4727BB 116-0080AA 121-1046
CABLE AS.
VV 128-8937
WIRE AS.
200-
BK
-14
A58
6-O
R-1
8A
579-
OR
13
200-
BK
-14
K 111-4835 B-2J 132-1979 H-3H 141-6437 D-3G 121-0986 B-2 (NOTE B) F 128-7337 G-1E 128-7336 E-1D 132-1978 F-8C 130-8446 A-9B 130-8445 A-3
GYPUBR
REDWHITEORANGEYELLOWPINK
ABBREV COLOR
BLACKGRAYPURPLEBROWN
DESCRIPTIONSYMBOL
CONNECTOR
INTERNAL ELECTRICALCONNECTION TO SURFACEOF COMPONENT
BLADE, SPADE, RING,OR SCREW TERMINAL
BKPKYLORWHRD
GNBU
GREENBLUE
CIRCUIT CONNECTED
CIRCUIT NOT CONNECTED
ATCH WIRE, CABLE,COMPONENT
L# CIRCUIT GROUPINGDESIGNATION
IDENT PART NO. LOC
200-
BK
-18
HARNESS AS.
592-
BU
-18
509-
WH
-18
508-
PU
-18
512-
GN
-18
511-
BR
-18
A51
3-R
D-1
859
2-B
U-1
8
A51
3-R
D-1
8
CONVERTER112-3543 (2.5A)
6 1234 5
GNDOUT INMEM IGN MOTORF
UPPER WIPERMOTOR147-7982
42
6
KK 111-4833495-GN-18200-BK-18
616-BU
NOTE B : USE WITH SHORT BOOM.
200-
BK
-18
L969-WH-18
200-
BK
-18
A770-PK-18
L968-OR-18
200-
BK
-18
NOTE F : HORIZONTAL MTG LOCATION FOR CASSETTE
200-
BK
-18
200-
BK
-18
615-
YL-
1861
5-Y
L-18
200-BK-18
L8
L970-GY-18
L8
YY 111-4830
615-
YL-
1861
5-Y
L-18
578-
BU
-18
L973
-GN
-18
200-
BK
-18
200-
BK
-18
K907-BU-18
K90
5-R
D-1
4
GN
D
CO
NV
(O
UT
)
200-
BK
-18
K909-BU-18
200-
BK
-18
200-
BK
-18
XX 111-4829
200-
BK
-18
200-
BK
-18185-YL-18
K909-BU-18
L33
L31
L9 L12
L13
200-
BK
-18
592-
BU
-18
L31
HH
L33
L33
L33
L33
K91
5-G
N-1
8
308-
YL-
18
L19L3
L25L4
A51
3-R
D-1
851
1-B
R-1
8
L31
L4L25
L3L19
L20
512-
GN
-18
L20
L25
L3
L4
L4
L3
L2
L19
L20
L25
508-
PU
-18
L2
K997-BU-18
K997-BU-18
615-
YL-
18
509-
WH
-18
WIRES K911-PK & K912-GN TO BE TWISTED AROUNDEACH OTHER AT LEAST 1 TURN PER 25 mm.
615-
YL-
18
L27
L26
615-YL
L27
L26
F771-OR-18F773-OR-18F774-WH-18F772-WH-18
615-
YL-
18
A769-GY-18
152-
BU
-18
615-
YL-
18
A768-BU-18
592-BU-18
K906-GN-18
108-BU
615-
YL-
18
185-YL-18
L29
L28
WW 128-8938
310-
PU
-18
615-
YL-
18
615-
YL-
18
200-
BK
-18
H
ATCH STARTAID SW111-4784
185-YL-18
L5
LOWERWIPER SW111-4785
LOWERWASHER SW111-4786
H
L11
FINESWING CONT SW111-4788
HH
BACKUP EPR VALVE SW114-0421
H HBACKUPGOV SW110-7884
H
200-
BK
-18
200-
BK
200-
BK
200-
BK
200-
BK
-14
200-BK
RH
SP
KR
(-)
RH
SP
KR
(+)
LH S
PK
R (
-)
A 135-6086 C-2
LH S
PK
R (
+)
65342187
L8
152-
BU
L6
108-
BU
120-
YL
616-BU200-BK
103-
RD
-18
118-
GY
A57
9-O
R
F
615-
YL
615-
YL
200-
BK
-14
386-
PK
-18
306-
GN
-18
491-
PK
-18
487-
OR
-18
496-
WH
-18
200-
BK
-18
386-PK-18
306-GN-18 491-PK-18
200-BK-18200-BK-18
616-BU
A57
2-P
KA
571-
PU
180-
GN
615-
YL
607-PK
322-GY
200-BK
200-BK
H
M 130-2211 G-1
AE
200-BK
615-
YL
A57
9-O
R11
8-G
Y
322-GY
F
615-YL
120-YL
118-GY
A513-RD-18C538-OR-18
129-BUC537-GN-18
C538-OR-18
N 129-8144 G-1
200-BK
C537-GN-18
5
322-GY
616-BU
118-GY108-BU
129-BU
A579-OR
A513-RD-18615-YL
120-YL
592-BU-18
A579-ORF
A
200-BK616-BU
322-GY
CO
NV
(M
EM
)
OPERATOR STATION
322-GY607-PK
200-BK-18103-RD-18
118-GYA579-OR
A579-OR
200-BK607-PK607-PK200-BK
AE
L8
201-BK-18
3
14
2
B
103-
RD
-18
120-
YL
200-BK
K
B
2
AC41
200-
BK
-18
961-
GN
-18
3L5
L7L6
CAB
306-GN-18
AC
AC
200-BK
L9
K905-RD-18K905-RD-18
A
E
L7
L6 L7
L1
AC 138-4282 A-2AE 132-1973 A-3
NOTE D : USE WITH FALLING OBJECT GUARD.
B
L1
K90
5-R
D-1
8
AC
ATCHBOOM LAMP5I-8250
L20
CHASSIS
G (NOTE B)
AB 121-1044 A-6
HORN7T-0970200-BK
G (NOTE B)K
607-PK
KG (NOTE B)
200-BK 200-BK-18616-BU-18
200-BK-18616-BU-18
200-BK200-BK
113-OR-18
322-GY 607-PK
L2
L3
UU 111-4826
CHASSISLAMP5I-8251
ATCHBOOM LAMP5I-8250
322-GY
L6
NOTE A : NORMALLY OPEN BEFORE REFRIGERANT CHARGE.
L7
607-PK607-PK
21
L7
HORN7T-0969
L6
THIS SCHEMATIC IS FOR THE 325B-HYD EXCAVATOR.(116-0177 CH04)
ELECTRICAL CONNECTIONTO MACHINE STRUCTURE
506-
PU
-18
506-PU-18
508-PU-18
K905-RD-18
CONN 10 CONN 11
CONN 12
CONN 13
CONN 31
CONN 32
CONN 33
CONN 30
CONN 34
F-8G-7F-8F-8F-8F-8I-8
A-8I-8I-8A-8 (NOTE C)H-8 (NOTE C)H-8 (NOTE C)A-9F-8F-8
113-
OR
-18
L909-BU-18L908-OR-18
235-BK-18
AC B
L908
-OR
-18
L909
-BU
-18
235
-BK
-18
L909-BU-18L908-OR-18
235-BK-18
L909-BU-18L908-OR-18
235-BK-18
L909-BU-18L908-OR-18
235-BK-18
235-
BK
-18
235-
BK
-18
K91
2-G
N-1
8K
911-
PK
-18
403-
GN
-18
487-
OR
-18
A76
1-P
U-1
8K
904-
GN
-18
496-
WH
-18
430-
BU
-18
495-
GN
-18
491-
PK
-18
492-
GY-
1840
5-G
Y-18
321-
BR
-18
C46
8-B
U-1
841
2-B
U-1
876
3-B
U-1
8A
762-
PU
-18
788-
YL-
18
L971
-GN
-18
L975
-PK
-18
L977
-YL-
18L9
74-G
N-1
8L9
78-G
Y-18
K99
7-B
U-1
8
K99
7-B
U-1
8
K99
7-B
U-1
8
615-
YL
615-
YL
L970
-GY-
18
306-
GN
-18
A77
1-P
U-1
8
235-
BK
-14 L2
GROUNDSTRAP132-1805
WIRES L908-OR & L909-BU TO BE TWISTED AROUNDEACH OTHER AT LEAST 1 TURN PER 25 mm.
F
A
A
