322B L ELECTRICAL SYSTEM SCHEMATIC (FOR SERVICE MANUAL SENR1630) AURORA

Component Location
Component
Schematic
Location
Machine
Location
Component
Schematic
Location
Machine
Location
Actuator - Engine Gov A-9
1
Resistor - Timer Relay E-7
D
Air Inlet Heater C-8
2
Sender - Hydraulic Oil Temp A-5
12
Alarm - Travel G-9
3
Sender - Air Inlet Heater Coolant Temp C-9
2
Alternator B-8
4
Sender - 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 Press 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 - Eng/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 H-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 H-8
D
Switch - Boom Raise Pressure D-8
18
Ground Strap - Chassis to Platform I-6
10
Switch - Coolant Level H-9
19
Ground Strap - Chassis to Disconnect SW I-8
D
Switch - Disconnect I-8
D
Horn A-2
7
Switch - Engine Oil Level A-8
1
Lighter E-1
E
Switch - Engine Oil Press 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
9
Switch - Lower Washer D-4
C
Pickup - Engine Speed B-9
11
Switch - Lower Wiper D-3
C
Radio - 12VDC C-6,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 Press C-9
15
Relay - Heater F-7
D
Switch - Start Aid D-5
C
Relay - Horn I-7
D
Switch - Start Aid Coolant Temp 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 in dash.
Connector Location
Connector Number
Schematic
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 H-5 B
CONN 19 H-5 B
CONN 20 H-4 B
CONN 21 H-4 B
CONN 22 H-4 B
CONN 23 H-4 B
CONN 24 F-4 C
CONN 25 F-4 C
CONN 26 F-4 C
CONN 27 F-4 C
CONN 28 A-3 13
CONN 29 B-3 7
CONN 30 C-3 A
CONN 31 H-3 B
CONN 32 H-3 B
CONN 33 D-2 C
CONN 34 B-2 7
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.
Wire Description
Wire
Wire
Color
Description
Wire
Number
Wire
Color
Description
Power Circuits
Accessory Circuits (Continued)
101 RD Bat (+) 513 OR A/C Compressor/Refrigerant Pressure SW
103 RD Dome Lamp 519 PK A/C Unit To Refrigerant Press SW
105 RD Key Sw 546 BU Aux Hyd - Rotate CW
107 RD Engine Shutdown 547 OR Aux Hyd - Rotate CCW
108 BU Aux Ckt 548 GY Aux Hyd - Open
109 RD Alt Output (+) Term. 549 PK Aux Hyd - Close
111 RD Timer Relay Out 1 To Fuse 576 PK Lower Wiper SW
112 PU Main Power Relay Output 578 BU Lower Washer SW
113 OR Opr Mon Panel B (+) Switched 590 GY Wiper SW To Wiper Controller
114 RD Warning Horn Relay (Forward) 592 BU DC/DC Converter Power Output
115 PK Cab/Chassis Lamp Relay A513 RD DC/DC Converter Memory Output
118 GY Wiper Relay A571 PU Aux Ckt 1
120 YL Converter A572 PK Aux Ckt 2
123 WH Aux Ckt A579 OR Upper Wiper Motor
124 GN A/C A586 OR Washer SW To Washer Controller
129 BU Lighter A588 GN Hyd Lock Sol Relay To Hyd Lock Sol
140 BU Aux Ckt C537 GN Sun Load Sensor (+)
147 PU Fine Swing Sol C538 OR Sun Load Sensor (-)
149 PU Boom Lamp Relay
Lighting Circuits
150 RD Hyd Lock Sol Relay 607 PK Flood Lamp - Front
151 GN Neutral Start SW 615 YL Cab Flood Lamp
152 BU Lower Wiper SW 616 BU Boom Flood Lamp
154 RD Neutral Start Relay
Control Circuits
168 RD Aux Ckt 763 BU Travel Speed Sol
172 RD Engine Governor Actuator 786 GN Boom Lamp Relay To Boom Lamp SW
177 RD Main Breaker 788 YL Eng Speed Sensor (+)
180 GN Aux Ckt 791 PK Chassis Lamp Relay To Chassis Lamp SW
185 YL Backup EPR Valve SW A718 PU AIH Coolant Temp Sender
189 RD Timer Relay Out 2 To Fuse A755 PK Throttle Pos SW #1
191 WH Aux Ckt A756 BU Throttle Pos SW #2
Ground Circuits
A757 GY Throttle Pos SW #3
200 BK Main Chassis A758 BR Throttle Pos SW #4
201 BK Operator Monitor Panel A761 PU Eng Governor Actuator Feedback
235 BK Engine Pump Control A762 PU Eng Speed Sensor (-)
Basic Machine Circuits
A768 BU Pump Control Sol To Backup EPR Valve SW
301 BU Starter No. 1 Sol A769 GY Pump Control Sol To Backup EPR Valve SW
304 WH Starter Relay No. 1 Output A770 PK Pump Control SW To Backup Resistor
306 GN Starter Relay Coil A771 PU Implement Press SW
307 OR Key SW To Neutral Start Relay F771 OR Gov Actuator (B)
308 YL Main Power Relay Coil F772 WH Gov Actuator (A)
309 GY Alternator Regulator Terminal F773 OR Eng Governor Actuator Accel
310 PU Start Aid SW To Start Aid Sol F774 WH Eng Governor Actuator Decel
311 WH Start Aid Sol To Temp SW J704 WH Hyd Lock Sol Relay
320 OR Horn Relay Coil To Horn SW 877 YL Heater Relay To Air Inlet Heater
321 BR Travel Alarm 961 BR Aux Ckt
322 GY Warning Horn (Forward) K904 GN Pump Discharge Press Sensor (Signal)
326 RD Key SW "C" Terminal To Eng Shutdown Sol K905 RD Fuse To Eng Pump Control
386 PK Neutral Start Relay K906 GN Swing Brake Sol To Backup EPR Valve SW
Monitoring Circuits
K907 BU Backup EPR Valve SW To Eng/Pump Cont
403 GN Alternator (R) Term. K909 BU Backup Gov SW
405 GY Opr Mon Oil Press. (Low Setting) K911 PK Eng/Pump Controller RS485 (+)
412 BU Opr Mon Coolant Level K912 GN Eng/Pump Controller RS485 (-)
430 BU Opr Mon Air Cleaner K915 GN Fine Swing SW To Eng/Pump Controller
487 OR Opr Mon Hyd Oil Filter K997 BU Eng/Pump Controller To Monitor
491 PK Hyd Oil Temp Sender L908 OR Controller RS-232C TX
492 GY Coolant Temp Sensor L909 BU Controller RS-232C RX
495 GN Fuel Level Sensor L968 OR Eng/Pump Controller To Backup EPR Valve
496 WH Opr Mon Hyd Oil Level L969 WH Eng/Pump Controller To Backup EPR Valve
A495 GY AIH Cont Unit (Regulator) L970 GY Aux Hyd Press SW
C468 BU Engine Oil Level L971 GN Travel Press SW
Accessory Circuits
L972 BU Low Idle SW
501 GN Wiper - Front (Low) L973 GN Fine Swing SW To Fine Swing Sol
506 PU Washer - Front L974 GN Boom Raise Press SW
508 PU Radio Speaker - Left L975 PK Start Aid Cont Indicator
509 WH Radio Speaker - Left (Common) L977 YL Level Finish Sol
511 BR Radio Speaker - Right L978 GY Trenching Sol
512 GN Radio Speaker - Right (Common)
Related Electrical Service Manuals
Form Number
Alternator: (9W-3043)
SENR4252
Electric Starting Motor: (104-7040)
Consist: 6V-5720
SENR3581
Consist: 106-8557
SENR3859
Engine/Pump Control: 151-9373
SENR9291
Starting and Charging:
SENR9292
Title
A
A
3
3
4
4
5
5
6
6
8
8
9
9
10
10
11
11
12
12
14
14
15
15
13
13
16
16
B
B
C
C
D
D
E
E
1
1
2
2
17
17
18
18
19
19
20
20
21
21
7
7
Machine Harness Connector And Component Locations
Code Description of Problems
1301 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 to low (below 23 volts).
420D Electric power supply is to 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
A AA
1
2
325-PK-14
200-BK-14
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
Socket
Fuse
Component
Part Number
Pin or Socket
Number
Receptacle
Plug
Wire Gauge
Wire, Cable, or Harness
Assembly Identification
Wire Color
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
Connector
Circuit Number
Identification
Ground
Connection
Pressure
Symbol
Temperature
Symbol
Level
Symbol
Flow
Symbol
Circuit Breaker
Symbol
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
1
2
2
Typical representation of a Sure-Seal
connector. The plug and receptacle
contain both pins and sockets.
Typical representation of a Deutsch
connector. The plug contains all
sockets and the receptacle contains
all pins.
Resistor, Sender and Solenoid Specifications
Part No. Component Description Resistance (Ohms)¹
3E-6332 Solenoid - Start Aid 6.0
Sender - Coolant Temp
Sender - Hyd Oil temp
7Y-8242 Resistor - Timer Relay 47 ± 4.7
Latch Coil - (1.55 ± 0.15)
Unlatch Coil - (10.30 ± 1.03)
102-8015 Resistor - Backup 41.0 ± 2.05
Full
8.0 + 1.0
8.0 - 0.5
Sensor - Fuel Level Midpoint 33.8 ± 2.0
Empty
83.5 ± 1.5
111-9916 Solenoid - Engine/Pump Control 11.7 ± 1.2
116-3526 Solenoid - Fine Swing 34.5 ± 0.5
Solenoid - Level Finish
Solenoid - Trenching
Solenoid - Swing Brake
Solenoid - Travel Speed
125-4812 Sender - AIH Coolant Temp 2.53
134-3998 Solenoid - A/C Clutch 17.6 ± 0.6
¹ At room temperature unless otherwise noted.
32.0 ± 3.2
121-1491 32.0 ± 3.2
105-9911
121-1490
Solenoid - Engine Shutdown8C-3663
6134 to 74964I-5394
Off Machine Switch Specification
Part No. Function Actuate Deactuate Contact Position
38 ± 3° C 27° C MIN Normally Closed
(100 ± 5° F) (80.6° F MIN)
90 ± 21 kPa 70 ± 21 kPa A-B, Normally Open
(13 ± 3.0 psi) (10 ± 3.0 psi) A-C, Normally Closed
Implement Pressure 1520 ± 98 kPa 1127 kPa MIN Normally Open
Travel Pressure (177.67 ± 14.21 psi) (128.92 psi MIN)
2646.00 ± 196 kPa 2156.00 ± 196 kPa Normally Open
(383.77 ± 28.43 psi) (383.77 ± 28.43 psi)
490 ± 49 kPa 290 kPa MIN Normally Open
(71 ± 7 psi) (42 psi MIN)
109-9330 Air Cleaner
635 ± 58 mm H
2
O
- Normally Open
275 to 1750 kPa ¹ - Normally Open
²
²
²
²
²
²
²
(40 to 255 psi)
-
114-5333 A/C Pressure Switch
¹ 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 (25 psi).
² Contact position at the contacts of the harness connector.
3E-6449 Start Aid Coolant Temperature
3E-6455
106-0179
106-0180 Boom Raise Pressure
Engine Oil Pressure
106-0181 Hydraulic Pressure
©2001 Caterpillar
All Rights Reserved
Printed in U.S.A.
SENR1679-01
APRIL 2001
322B L Excavator
Electrical System
1YS1-UP
WIRES THAT HAVE SYSTEM VOLTAGE
WHEN THE KEY SWITCH IS OFF.
WIRES THAT HAVE SYSTEM VOLTAGE
WHEN THE KEY SWITCH IS ON.
STARTING CIRCUIT.
GAUGE CIRCUIT.
MONITOR CIRCUIT.
WASHER/WIPER CIRCUIT.
HEATER AND AIR CONDITIONER CIRCUIT.
GROUND CIRCUIT.
ENGINE SHUTDOWN CONTROL 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
C
B
A
320-OR-18
151-GN-18
150-RD-18
154-RD-18
546-BU-18
546-BU-18
154-RD-18
189-RD
172-RD-18
J
J
L15
L17
NEUTRAL START
LIMIT SW
111-4799
HORN SW
128-2134
200-BK-18
235-BK-14
200-BK-14
103-RD-18
506-PU-18
403-GN-18
A771-PU-18
L909-BU-18
L908-OR-18
235-BK-18
788-YL-18
A762-PU-18
763-BU-18
412-BU-18
C468-BU-18
321-BR-18
405-GY-18
492-GY-18
491-PK-18
495-GN-18
430-BU-18
496-WH-18
K904-GN-18
A761-PU-18
487-OR-18
235-BK-14
200-BK-14
200-BK-18
786-GN-18
791-PK-18
308-YL-18
151-GN-18
118-GY
512-GN-18
511-BR-18
509-WH-18
103-RD-18
519-PK-18
113-OR-18
185-YL-18
105-RD
147-PU-18
140-BU
149-PU
151-GN-18
320-OR-18
107-RD
112-PU-6
112-PU-14
112-PU-14
112-PU-14
112-PU-14
112-PU-14
149-PU
140-BU
200-BK-18
200-BK-18
200-BK-14
147-PU-18
200-BK-18
H
M
M
N (NOTE D)
F
3 2
L971-GN-18
L977-YL-18
L974-GN-18
L978-GY-18
306-GN-18
177-RD-14
177-RD-14
177-RD-14
177-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
L8
L970-GY-18
L8
L20
115-PK-14
200-BK-14
200-BK-18
J704-WH-18
547-OR-18
A588-GN-18
J
115-PK-14
111-RD-14
200-BK-18
A
12 VDC RADIO
103-8525
150-RD-18
C538-OR-18
200-BK-18
RH SPKR (-)
C537-GN-18
A513-RD-18
592-BU-18
154-RD-18
189-RD
172-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
LAMP
126-7487
200-BK-14
A
A
152-BU
C
B
200-BK-14
200-BK-14
547-OR-18
J704-WH-18
GND
A
CONV (OUT)
576-PK
CONV (MEM)
2
1
L21
L20
PLATFORM
120-YL
L19
114-RD
114-RD
HYD
LOCK SOL
121-1491
L15
L14
N
200-BK
615-YL
129-BU
L15
L975-PK-18
K997-BU-18
326-RD
L21
L19
L3
L3
OPERATOR STATION
108-BU
M
N (NOTE D)
2
1
LOWER
WIPER MOTOR
131-0398
+
+1
-
MOTOR
615-YL
AUX HYD
PRESS SW
106-0181
200-BK
508-PU-18
CONN 32
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-18
105-RD
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
9
1
11
5
2
1
4
3
5
6
A
J
12
11
10
6
1
3
5
2
7
8
9
4
J
A
4
177-RD-14
177-RD-14
177-RD-14
177-RD-14
147-PU-18
118-GY
124-GN-14
12
4
10
2
6
149-PU
140-BU
105-RD
107-RD
103-RD-18
147-PU-18
115-PK-14
120-YL
191-WH-14
10A
10A
15A
10A
10A
10A
15A
CAB/CHASSIS LAMP
RADIO
LOWER WASHER/WIPER
WASHER/WIPER
CIGAR LIGHTER
A/C /HEATER
HORN
A
15A
DOME LAMP
KEY SW
BOOM LAMP
FINE SWING
SHUTDOWN
ATCH LUBRICATOR
JJ
FUSE BASE
111-4812
L10
546-BU-18
1
8
6
2
J704-WH-18
547-OR-18
5
4
152-BU
J704-WH-18
961-BR-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
C538-OR-18
C537-GN-18
A513-RD-18
592-BU-18
A
J
8
7
5
4
3
2
L52
L20
547-OR-18
115-PK-14
K905-RD-14
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
K905-RD-14
L20
L22
L34
168-RD
114-RD
AUX CKT
J704-WH-18
113-OR-18
113-OR-18
129-BU
129-BU
SWITCH PANEL
113-OR-18
546-BU-18
114-RD
151-GN-18
308-YL-18
3
4
1
2
308-YL-18
L10
L970-GY-18
2
1
8
7
5
6
4
3
508-PU-18
509-WH-18
511-BR-18
J
512-GN-18
200-BK-18
J
152-BU
ATCH HYD CTL
J
HYD OIL FILTER SW
113-OR-18
A513-RD-18
ANTENNA CABLE
134-4430
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
A513-RD-18
512-GN-18
511-BR-18
509-WH-18
508-PU-18
7
8
1
2
6
5
4
3
CONN 19
CONN 20
CONN 21
CONN 22
CONN 23
CONN 31
200-BK
A770-PK-18
200-BK
185-YL-18
200-BK-18
320-OR-18
151-GN-18
200-BK-18
200-BK-18
791-PK-18
A770-PK-18
K909-BU-18
A770-PK-18
791-PK-18
615-YL
200-BK-18
151-GN-18
A588-GN-18
320-OR-18
786-GN-18
149-PU
616-BU
A718-PU-18
306-GN-18
310-PU-18
200-BK-18
308-YL-18
A770-PK-18
K909-BU-18
615-YL
791-PK-18
115-PK-18
115-PK-18
151-GN-18
200-BK-18
A588-GN-18
616-BU
149-PU-18
149-PU-18
149-PU
320-OR-18
H
I
311-WH-18
310-PU-18
ATCH START
AID SOL
3E-6332
1
AA
2
COOLANT
LEVEL SW
096-0744
MOTOR
UPPER WASHER
7T-8890
LOWER WASHER
7T-8890
BATTERY
3T-5760
POS
NEGNEG
POS
ATCH
BATTERY
3T-5760
(NOTE C)
200-BK
200-BK-18
K909-BU-18
POS
NEG NEG
POS
9 8 7 6 5
DISCONNECT SW.
7N-0719
ALT BREAKER
9S-0174
YY
BACKUP
RESISTOR
102-8015
HYD LOCK SOL RELAY
111-4871
506-PU-18
CAB/CHASSIS LAMP RELAY
111-4871
578-BU-18
60A
200-BK-18
200-BK-18
MOTOR
A
HORN RELAY
111-4871
BOOM LAMP RELAY
111-4871
A
DIODE
121-1022
KEY SW.(ON)
CONT UNIT
104-3204
ZZ
CHECK TERM.
RELAY
KEY SW.(START)
GND
INDICATOR
REGULATOR
TEMP.
L975-PK-18
306-GN-18
177-RD-14
177-RD-14
177-RD-14
RD-00
RD-00
506-PU-18
578-BU-18
177-RD-14
177-RD-14
VVAD
AD
177-RD-6
109-RD-6
101-RD-6
172-RD-18
111-RD-14
101-RD-6
101-RD-6
MAIN BREAKER
9S-0174
185-YL-18
112-PU-14
112-PU-14
180-GN
189-RD-14
8
ENG GOV
PLATFORMCHASSIS
GROUND STRAP
7G-1060
10A
FUSE
10A 9W-1442
15A 9W-1441
BACKUP
10A
10A
10A
10A
10A
10A
10A10A
10A
10A
15A
10A
15A
E/P CONT
HYD LOCK SOL
10A
AUX CKT
HYD LOCK SW
J
J
J
J
200-BK-18
200-BK-18
306-GN-18
114-RD
114-RD
60A
BK-00
RD-00
RD-00
A
CHASSIS
DD
GG
(NOTE C)
CC
BK-00
FF (NOTE C)
BB
EE (NOTE C)
AA
L15L15
BB
189-RD
RELAY PANEL
115-PK-14
114-RD-18
114-RD-18
150-RD-18
A495-GY-18
115-PK-14
K909-BU-18
150-RD-18
306-GN-18
K909-BU-18
786-GN-18
177-RD-14
320-OR-18
200-BK-18
412-BU-18
K905-RD-14
150-RD-18
150-RD-18
150-RD-18
150-RD-18
150-RD-18
154-RD-18
L40
L17
L15
L17
L38
L37
L17
108-BU
L40
L39
180-GN
168-RD
J
1
2
180-GN
K905-RD-14
10A
112-PU-14
CC
GG
REMOVAL TOOL
7Y-5493
172-RD-18
114-RD
123-WH-14
123-WH-14
ATCH FAN
108-BU
607-PK
322-GY
322-GY
J704-WH-18
322-GY
114-RD
J704-WH-18
607-PK
ATCH LAMPS
AIR INLET HEATER
CONN 18
147-PU-18
F774-WH-18
F773-OR-18
A761-PU-18
K904-GN-18
430-BU-18
K906-GN-18
A771-PU-18
763-BU-18
112-PU-6
K909-BU-18
151-GN-18
308-YL-18
307-OR-18
791-PK-18
615-YL
786-GN-18
L909-BU-18
L908-OR-18
235-BK-18
149-PU
320-OR-18
200-BK-14
519-PK-18
590-GY-18
501-GN-18
A586-OR-18
786-GN-18
791-PK-18
113-OR-18
308-YL-18
307-OR-18
105-RD
A758-BR-18
A757-GY-18
A756-BU-18
A755-PK-18
578-BU-18
K915-GN-18
310-PU-18
A769-GY-18
A768-BU-18
K906-GN-18
185-YL-18
K909-BU-18
K907-BU-18
A770-PK-18
F772-WH-18
F774-WH-18
F773-OR-18
F771-OR-18
615-YL-18 615-YL
615-YL
A586-OR-18
501-GN-18
590-GY-18
124-GN-14
200-BK
K909-BU-18
A588-GN-18
151-GN-18
308-YL-18
307-OR-18
791-PK-18
615-YL
RELAY PANEL
786-GN-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
309-GY-18
308-YL-18
A718-PU-18
616-BU
149-PU
786-GN-18
320-OR-18
A588-GN-18
151-GN-18
200-BK-18
200-BK-18
200-BK-18
615-YL
200-BK-18
149-PU
200-BK-18
K909-BU-18
307-OR-18
386-PK-18
200-BK-18
K909-BU-18
200-BK-18
200-BK-18
306-GN-18
306-GN-18
308-YL-18
308-YL-18
G
11
12
1
2
3
4
5
6
7
8
9
10
1
2
321-BR-18
200-BK-18
AIR CLEANER SW
109-9330
TRAVEL ALARM
3E-7738
B
1
2
320-OR-18
A770-PK-18
200-BK-18
308-YL-18
308-YL-18
A588-GN-18
151-GN-18
308-YL-18
307-OR-18
791-PK-18
615-YL
308-YL-18
786-GN-18
149-PU
320-OR-18
A770-PK-18
K909-BU-18
200-BK
F
A718-PU-18
386-PK-18
309-GY-18
616-BU
UU
VV
5
4
6
3
1
2
5
3
4
6
2
1
7
8
9
10
11
12
MAIN RELAY
3T-0376
4
5
6
3
12
2
1
7
11
8
9
10
DIODE
121-1022
200-BK-18
306-GN-18
177-RD-8
A718-PU-18
386-PK-18
309-GY-18
616-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-18
L978-GY-18
L974-GN-18
L969-WH-18
L968-OR-18
L973-GN-18
L972-BU-18
A769-GY-18
491-PK-18
496-WH-18
495-GN-18
403-GN-18
788-YL-18
A762-PU-18
C468-BU-18
405-GY-18
492-GY-18
519-PK-18
321-BR-18
412-BU-18
306-GN-18
306-GN-18
615-YL-18
306-GN-18
487-OR-18
310-PU-18
107-RD
103-RD-18
177-RD-14
177-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
K909-BU-18
307-OR-18
200-BK-18
177-RD-14
115-PK-14
177-RD-14
177-RD-14
112-PU-6
200-BK-18
386-PK-18
386-PK-18
8
9
6
5
12
11
4
10
10
9
8
12
7
6
11
5
2
1
4
3
2
1
3
7
307-OR-18
A755-PK-18
A756-BU-18
A757-GY-18
A758-BR-18
L972-BU-18
308-YL-18
F771-OR-18
F772-WH-18
L969-WH-18
L968-OR-18
K915-GN-18
K907-BU-18
200-BK-18
308-YL-18
200-BK-18
112-PU-6
A A
7
8
1
6
5
4
3
2
H H
304-WH-8
6
8
1
7
4
5
3
2
152-BU
152-BU
177-RD-8
114-RD
200-BK-18
A
1
6
4
3
2
A/C & HEATER
UNIT
152-5085
(NOTE E)
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
L48
L47
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-RD
111-RD-14
306-GN-18
306-GN-18
C538-OR-18
C537-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
A495-GY-18
111-RD-14
189-RD
154-RD-18
154-RD-18
310-PU-18
200-BK-18
105-RD
F773-OR-18
F774-WH-18
A770-PK-18
A769-GY-18
A768-BU-18
K906-GN-18
615-YL-18
L973-GN-18
578-BU-18
307-OR-18
308-YL-18
791-PK-18
786-GN-18
185-YL-18
113-OR-18
A586-OR-18
501-GN-18
590-GY-18
200-BK-18
607-PK
322-GY
K909-BU-18
607-PK
L18
430-BU-18
310-PU-18
12
1
10
8
11
12
9
10
11
4
3
2
1
9
8
2
7
6
5
4
3
2
1
4
5
6
1
7
3
3
HH
AA
H
2
A
H
4
A
306-GN-18
A718-PU-18
309-GY-18
616-BU
304-WH-8
877-YL-4
101-RD-4
ANTENNA
CABLE
8R-6111
322-GY
607-PK
2
1
IN 1
L21
GND
UU
L19
ZZ
YY
JJ
XX
WW
12
1
8
2
10
11
3
4
9
TIMER RELAY
111-4870
7
6
XX
5
615-YL-18
NEUTRAL
START RELAY
111-4871
START RELAY
125-1302
L21
L18
L34
L34
L8
L19
L3
L4
L25
L25
L4
L21
JJ KK
L20
109-RD-6
607-PK
1
2
2
4
HEATER
RELAY
116-0114
KK
B
BA
A
109-RD-6
L48
L47
L47
L48
A
B
B
B
B
DB
L51
L49
L51
L49
961-BR-18
3
2
1
180-GN
A571-PU
H
A572-PK
A572-PK
A571-PU
326-RD
180-GN
961-BR-18
961-BR-18
200-BK-14
326-RD
576-PK
BLOCK
121-1023
L45
L49
113-OR-18
140-BU
123-WH-14
J704-WH-18
L908-OR-18
L909-BU-18
615-YL
114-RD
123-WH-14
J704-WH-18
+B
COMP
GND
SUN+
SUN-
ATCH
HEATER UNIT
152-5087
615-YL
308-YL-18
A588-GN-18
322-GY
607-PK
615-YL
115-PK-14
J704-WH-18
J704-WH-18
615-YL
607-PK
322-GY
B
CONN 2
CONN 3
CONN
4
CONN 5
CONN 9
CONN 8
CONN 7
CONN 6
CONN 14
CONN 15
CONN
16
CONN 17
CONN 24
CONN 25
CONN 26
307-OR-18
578-BU-18
K906-GN-18
A768-BU-18
A769-GY-18
A770-PK-18
F774-WH-18
F773-OR-18
K909-BU-18
310-PU-18
A588-GN-18
A588-GN-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
G
F
E
L973-GN-18
ENG/PUMP CONT
151-9373
L971-GN-18
L970-GY-18
L977-YL-18
L974-GN-18
L969-WH-18
403-GN-18
MONITOR +B OUT
L968-OR-18
A761-PU-18
L978-GY-18
763-BU-18
A771-PU-18
K997-BU-18
788-YL-18
A762-PU-18
412-BU-18
430-BU-18
321-BR-18
405-GY-18
492-GY-18
491-PK-18
495-GN-18
496-WH-18
576-PK
C468-BU-18
K907-BU-18
K904-GN-18
EPR VALVE (+)
GOV ACTR FDBK
COOLANT LEVEL SW
TRAVEL SPEED SOL
ENG SPEED SENSOR (-)
ENG SPEED SENSOR (+)
TRENCHING SOL
IMPLEMENT PRESS SW
ENG OIL LEVEL SW
FUEL LEVEL SENSOR
FRONT PUMP PRESS SENSOR
HYD OIL LEVEL SW
AIR CLEANER SENSOR
HYD OIL TEMP SENSOR
COOLANT SENSOR
9
28
31
26
13
30
29
35
40
2
6
39
24
25
22
15
ALTERNATOR (R TERM)
7
38
12
TRAVEL ALARM
ENG OIL PRESS SW
36
SWING BRAKE SOL
23
EPR VALVE (-)
17
21
8
27
18 TRAVEL PRESS SW
BOOM RAISE PRESS SW
LEVEL FINISH SOL
DUAL PWR SOL
AUX HYD PRESS SW
A
37
4
3
OPTION SENSOR (PWM)
1
16
19
5
OPTION SENSOR (PWM)
32
33
DEGITAL OUT (-)
DEGITAL OUT (-)
14
11
34
JOY STICK +B OUT
L10
549-PK-18
548-GY-18
200-BK
200-BK-18
L8
L8
L18
200-BK-18
200-BK-18
200-BK-18
L13
L12
L11
L9
J704-WH-18
308-YL-18
L3
L19
L21
L20
4
WIPER
W INT
W LOW
PUMP
+B
WASH
GND
GND
H
549-PK-18
4
H
H
J704-WH-18
548-GY-18
J704-WH-18
LAMP
126-7487
1
3
2
A758-BR-18
118-GY
307-OR-18
A757-GY-18
615-YL-18
A756-BU-18
A755-PK-18
105-RD
A586-OR-18
549-PK-18
549-PK-18
L7
548-GY-18
501-GN-18
K912-GN-18
A
201-BK-18
103-RD-18
5
4
3
2
1
J704-WH-18
308-YL-18
152-BU
J704-WH-18
548-GY-18
200-BK-18
200-BK
615-YL
326-RD
200-BK-18
200-BK
200-BK-18
129-BU
K911-PK-18
590-GY-18
308-YL-18
403-GN-18
A579-OR
C538-OR-18
C537-GN-18
200-BK-14
200-BK-18
615-YL
L972-BU-18
200-BK-18
308-YL-18
200-BK-18
113-OR-18
791-PK-18
786-GN-18
A586-OR-18
501-GN-18
590-GY-18
615-YL
6
L11
L12
H
L6
E
E
E
+
H
ONE TOUCH
LOW IDLE SW
128-2134
200-BK-18
+B
L. CHASSIS
L. BOOM
WASH
W. LOW
W. INT
GND
GND
LIGHT
RS485-
+B
MAIN
RS485+
N
200-BK
200-BK-18
200-BK
L21
L19
L3
L18
L18
L13
L13
L12
L11
L13
L12
L11
E
K997-BU-18
L7
L14
L1
SW INPUT
F
S4
S3
S2
S1
COM
M
H
MONITOR
151-9385
SWITCH PANEL
111-4800
KEY SW
9G-7641
H
SUN LOAD
SENSOR
128-2162
-
SERVICE
METER
6T-7337
THROTTLE
POS SW
106-0107
EE
R
C
S
B
WIPER/WASHER
CONTROLLER
127-9838
615-YL
OFF
ON
ST
LIGHTER
9W-0335
506-PU-18
CONN 27
E
D
C
B
A
200-BK-18
311-WH-18
C468-BU-18
200-BK-18
A761-PU-18
BK
WH
200-BK-18
F773-OR-18
F774-WH-18
K904-GN-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
A769-GY-18
A768-BU-18
763-BU-18
200-BK-18
200-BK-18
200-BK-18
A768-BU-18
A769-GY-18
101-RD-4
304-WH-8
311-WH-18
403-GN-18
309-GY-18
492-GY-18
A718-PU-18
877-YL-4
A762-PU-18
788-YL-18
405-GY-18
F774-WH-18
F773-OR-18
A761-PU-18
C468-BU-18
200-BK-4
200-BK-18
200-BK-6
200-BK-4
A718-PU-18
200-BK-18
492-GY-18
200-BK-18
309-GY-18
403-GN-18
200-BK-6
200-BK-18
405-GY-18
788-YL-18
A762-PU-18
304-WH-8
RD-00
RD-00
200-BK-4
200-BK-6200-BK-10
200-BK-18
200-BK-18200-BK-18
200-BK-18
301-BU-10
513-OR-18
200-BK-18
200-BK-10
301-BU-10
405-GY-18
200-BK-18
788-YL-18
A762-PU-18
101-RD-4
L977-YL-18
L978-GY-18
L978-GY-18
763-BU-18
L977-YL-18
200-BK-18
200-BK-18
200-BK-18
326-RD
200-BK-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
877-YL-4
326-RD
K997-BU-18
ATCH START AID
COOLANT TEMP SW.
3E-6449
2
1
B

AIH COOLANT
TEMP SENDER
125-4812
B
2
1
PUMP DISCHARGE
PRESS SENSOR
106-0178
SIGNAL
GROUNDBK-18
BR-18
YL-18
B
C
107-9652
B
GND
F/B
+B
ACCEL
B B
B
BK-00
C
2
1
DECEL
6
B
B
ENG GOV
ACTUATOR
106-0126
HH
C
B
BB
C
C
C
C
C
KEY
ALTERNATOR
9W-3043
ENG OIL
LEVEL SW
111-4759
1
2
2
1
B
COOLANT TEMP
SENDER
4I-5394
C
B
BATMTR
SG
B
STARTER
MOTOR
104-7040
B-
2
1
ENG
SHUTDOWN SOL
8C-3663
ENG OIL
PRESS SW
3E-6455
CHASSIS
BK-18
RD-18
ENG SPEED
PICKUP
6V-2455
A
C
B
A
BU-18
B+
RD
ALT
A/C CLUTCH
SOL
134-3998 (NOTE E)
MOTOR
B
1
2
B
6
BBBB
2
12
1
ENG/PUMP CONT
SOL
111-9916
LEVEL FINISH
SOL
121-1490
TRENCHING SOL
121-1490
TRAVEL SPEED
SOL
121-1491
1
22
9 8 7
1
4
3
5
4
5
3
L44
L43
L44
B
CHASSIS
L42
L41
L29
L30
C
EE
AA
L43
L43
B
CHASSIS
L28
L30
L29
L41
L42
L42
L41
2
3
4
1
1
4
3
2306-GN-18
ATCH
SUCTION LINE
SHUTOFF LIMIT SW
3E-5181
4
1 2
3
K909-BU-18
308-YL-18
308-YL-18
200-BK-18
200-BK-18
SPEAKER (L)
6T-7695
SPEAKER (R)
6T-7695
F
F
200-BK-18
K906-GN-18
200-BK-18
189-RD
177-RD-14
111-RD-14
A495-GY-18
RELAY PANEL
200-BK-18
L974-GN-18
K906-GN-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
L974-GN-18
200-BK-18
200-BK-18
200-BK-18
L971-GN-18
A771-PU-18
L974-GN-18
K906-GN-18
495-GN-18
616-BU
496-WH-18
487-OR-18
491-PK-18
306-GN-18
386-PK-18
L977-YL-18
763-BU-18
L978-GY-18
A768-BU-18
A769-GY-18
K904-GN-18
K997-BU-18
A761-PU-18
F773-OR-18
F774-WH-18
326-RD
172-RD-18
519-PK-18
REFRIGERANT
LOW PRESS SW
114-5333 (NOTE A)
(NOTE E)
513-OR-18
519-PK-18
405-GY-18
PK
788-YL-18
1
2
C
A762-PU-18
C468-BU-18
109-RD-6
101-RD-4
304-WH-8
309-GY-18
492-GY-18
A718-PU-18
877-YL-4
311-WH-18
B
ANTENNA
8E-1118
200-BK-18
495-GN-18
616-BU
200-BK-18
311-WH-18
321-BR-18
412-BU-18
12 VDC RADIO
3E-7140
(NOTE F)
L973-GN-18
147-PU-18
OUT 1
+B
IN 2
OUT 2
AB
1
3
RESISTOR
7Y-8242
2
1
B
403-GN-18
109-RD-6
519-PK-18
FINE SWING
SOL
116-3526
BOOM RAISE
PRESS SW
106-0180
1
2
B
2
1
2
1
B
2
1
B
SWING
BRAKE SOL
121-1491
IMPLEMENT
PRESS SW
106-0179
TRAVEL
PRESS SW
106-0179
172-RD-18
322-GY
607-PK
L50
L51
113-OR-18
L45
L44
L42
L41
L29
L30
L44
L42
L41
L29
L30
L30
L29
L41
L30
L29
L28
-
+
-
+
512-GN-18
511-BR-18
509-WH-18
508-PU-18
OR
109-RD-6
326-RD
L42
WH-18
WH-18
WH-18
WH-18
B
L44
B
6V-5821 (NOTE C)
+B
L45
607-PK
L971-GN-18
A771-PU-18
L971-GN-18
A771-PU-18
L44
172-RD-18
519-PK-18
322-GY
607-PK
607-PK
AIR INLET HEATER
CONN 1
103-RD-18
403-GN-18
403-GN-18
403-GN-18
403-GN-18
235-BK-14 235-BK-18
235-BK-18
308-YL-18
A758-BR-18
A757-GY-18
A756-BU-18
A755-PK-18
K912-GN-18
K911-PK-18
K915-GN-18
F771-OR-18
F772-WH-18
K907-BU-18
403-GN-18
487-OR-18
A761-PU-18
K904-GN-18
496-WH-18
430-BU-18
495-GN-18
491-PK-18
492-GY-18
405-GY-18
321-BR-18
C468-BU-18
412-BU-18
763-BU-18
A762-PU-18
235-BK-18
L909-BU-18
L908-OR-18
788-YL-18
A771-PU-18
103-RD-18
200-BK-14
200-BK-14
403-GN-18
200-BK-14
6 5 4
D
3 2
1
C
B
A
200-BK-18
487-OR-18
200-BK-18
L972-BU-18
L908-OR-18
L909-BU-18
235-BK-18
L971-GN-18
L975-PK-18
L977-YL-18
L974-GN-18
L978-GY-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-18
200-BK-18
BK
YL
B
HYD OIL
FILTER SW
143-7966
GROUND
SIGNAL
+B
C
B
A
BB
B
HYD OIL
TEMP SENDER
4I-5394
FUEL LEVEL
SENSOR
105-9911
2
1
HYD OIL
LEVEL SW
111-4760
2
1
B
200-BK-14
200-BK-14
K912-GN-18
K911-PK-18
403-GN-18
615-YL-18
K911-PK-18
K912-GN-18
A586-OR-18
590-GY-18
501-GN-18
200-BK-14
103-RD-18
118-GY
615-YL-18
403-GN-18
200-BK-14
103-RD-18
512-GN-18
511-BR-18
509-WH-18
508-PU-18
615-YL
615-YL
506-PU-18
590-GY-18
501-GN-18
A586-OR-18
103-RD-18
103-RD-18
509-WH-18
511-BR-18
512-GN-18
118-GY
103-RD-18
506-PU-18
C
B
A
118-GY
A755-PK-18
A756-BU-18
A757-GY-18
A758-BR-18
308-YL-18
L975-PK-18
615-YL
NOTE C : USE WITH COLD WEATHER.
ZZ 111-4831
K997-BU-18
235-BK-18
K997-BU-18
K997-BU-18
235-BK-18
F772-WH-18
F771-OR-18
K915-GN-18
K911-PK-18
K912-GN-18
L909-BU-18
L908-OR-18
487-OR-18
K905-RD-18
235-BK-18
512-GN-18
511-BR-18
509-WH-18
508-PU-18
THROTTLE DIAL S1
THROTTLE DIAL S2
THROTTLE DIAL S3
THROTTLE DIAL S4
GOV ACTR (A)
GOV ACTR (B)
RS485 - (VALVE CONT)
RS485 + (VALVE CONT)
RS232C (GND)
RS232C (RX)
20
10
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
32
33
25
KEY SW ON
RS485 - (ELEC GOV)
26
12
40
2
4
28
27
LOW IDLE SW
21
20
1
11
22
34
3
24
23
14
13
16
15
5
36
35
29
31
30
39
38
37
GND
GND
HAMMER PRESS. SW
RS232C (TX)
KEY SW START
DOME LAMP
162-7755
2
3
4
5
6
1
8
7
2
1
8
3
5
4
7
6
4
3
1
2
F
F
E E
A
A A
L7
A
A
3
1
4
2
576-PK
129-BU
403-GN-18
615-YL-18
103-RD-18
C538-OR-18
K997-BU-18
12
11
10
9
K912-GN-18
K911-PK-18
501-GN-18
C537-GN-18
590-GY-18
UNLESS OTHERWISE SPECIFIED ALL WIRE IS 16 GAUGE.
COMPONENTS ARE SHOWN INSTALLED ON A FULLY
OPERABLE MACHINE WITH THE KEY AND ENGINE OFF.
JJ 111-4832
HH 7Y-8298
GG 116-0242
FF 116-0080
EE 116-0241
CC 125-4727
BB 116-0080
AA 125-4861
CABLE AS.
VV 128-8937
WIRE AS.
200-BK-14
A586-OR-18
A579-OR
5
3
200-BK-14
K 116-0207
J 132-1979
H 141-6437
G 5I-8369
F 128-7337
E 128-7336
D 132-1978
C 130-8446
B 138-4281
GY
PU
BR
RED
WHITE
ORANGE
YELLOW
PINK
ABBREV COLOR
BLACK
GRAY
PURPLE
BROWN
DESCRIPTIONSYMBOL
CONNECTOR
INTERNAL ELECTRICAL
CONNECTION TO SURFACE
OF COMPONENT
BLADE, SPADE, RING,
OR SCREW TERMINAL
BK
PK
YL
OR
WH
RD
GN
BU
GREEN
BLUE
CIRCUIT CONNECTED
CIRCUIT NOT CONNECTED
ATCH WIRE, CABLE,
COMPONENT
L#
CIRCUIT GROUPING
DESIGNATION
IDENT PART NO. LOC
200-BK-18
HARNESS AS.
592-BU-18
509-WH-18
508-PU-18
512-GN-18
511-BR-18
A513-RD-18
592-BU-18
A513-RD-18
615-YL
CONVERTER
112-3543 (2.5A)
615-YL
6
1
2
3
4
5
GND
OUT
IN
MEM
IGN
F
4
1
6
KK 111-4833
495-GN-18
200-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-18
615-YL-18
200-BK-18
L8
L970-GY-18
L8
YY 111-4830
615-YL-18
615-YL-18
578-BU-18
L973-GN-18
200-BK-18
200-BK-18
K907-BU-18
K905-RD-14
GND
CONV (OUT)
200-BK-18
K909-BU-18
200-BK-18
200-BK-18
XX 111-4829
200-BK-18
200-BK-18
185-YL-18
K909-BU-18
L33
L31
L9
L12
L13
200-BK-18
592-BU-18
L31
HH
L33
L33
L33
L33
K915-GN-18
308-YL-18
L19
L3
L25
L4
A513-RD-18
511-BR-18
L31
L4
L25
L3
L19
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 AROUND
EACH OTHER AT LEAST 1 TURN PER 25 mm.
615-YL-18
L27
L26
615-YL
L27
L26
F771-OR-18
F773-OR-18
F774-WH-18
F772-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 START
AID SW
111-4784
185-YL-18
L5
LOWER
WIPER SW
111-4785
LOWER
WASHER SW
111-4786
H
L11
FINE
SWING CONT SW
111-4788
HH
BACKUP
EPR VALVE SW
114-0421
H H
BACKUP
GOV SW
110-7884
H
200-BK-18
200-BK
200-BK
200-BK
200-BK-14
200-BK
RH SPKR (-)
RH SPKR (+)
LH SPKR (-)
A 135-6086
LH SPKR (+)
6
5
3
4
2
1
8
7
L8
152-BU
L6
F
108-BU
120-YL
616-BU
200-BK
103-RD-18
118-GY
A579-OR
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-18
200-BK-18
616-BU
A572-PK
A571-PU
180-GN
615-YL
607-PK
322-GY
200-BK
200-BK
H
M 130-2211
AE
200-BK
615-YL
A579-OR
118-GY
322-GY
F
615-YL
120-YL
118-GY
A513-RD-18
C538-OR-18
129-BU
C537-GN-18
C538-OR-18
N 129-8144
200-BK
C537-GN-18
2
322-GY
616-BU
118-GY
108-BU
129-BU
A579-OR
A513-RD-18
615-YL
120-YL
592-BU-18
A579-OR
F
A
200-BK
616-BU
322-GY
L970-GY-18
CONV (MEM)
OPERATOR STATION
322-GY
607-PK
200-BK-18
103-RD-18
118-GY
A579-OR
A579-OR
200-BK
607-PK
607-PK
200-BK
AE
L8
201-BK-18
3
1
4
2
B
306-GN-18
103-RD-18
120-YL
200-BK
K
B
2
AC
4
1
200-BK-18
961-BR-18
3
L5
L7
L6
CAB
306-GN-18
AC
AC
200-BK
L9
K905-RD-18
K905-RD-18
A
A
A
E
L7
L6
L7
L1
AC 138-4282
AE 132-1973
NOTE D : USE WITH FALLING OBJECT GUARD.
B
L1
K905-RD-18
AC
ATCH
BOOM LAMP
5I-8250
L20
CHASSIS
G (NOTE B)
AB 121-1044
HORN
7T-0970
200-BK
G (NOTE B)
K
607-PK
K
G (NOTE B)
200-BK
200-BK-18
616-BU-18
200-BK-18
616-BU-18
200-BK
200-BK
113-OR-18
322-GY
607-PK
L2
L3
L2
UU 111-4826
CHASSIS
LAMP
5I-8251
ATCH
BOOM LAMP
5I-8250
322-GY
L6
NOTE A : NORMALLY OPEN BEFORE REFRIGERANT CHARGE.
L7
607-PK
607-PK
2
1
L7
HORN
7T-0969
L6
THIS SCHEMATIC IS FOR THE 322B-HYD EXCAVATOR.
(116-0196) CHG 04
ELECTRICAL CONNECTION
TO MACHINE STRUCTURE
506-PU-18
506-PU-18
508-PU-18
K905-RD-18
CONN 10
CONN 11
CONN 12
CONN 13
CONN 29
CONN 28
CONN 34
CONN
30
CONN 33
F-8
C-2
G-7
F-8
F-8
F-8
F-8
I-8
A-8
I-8
I-8
A-8
H-8
H-8
A-9
F-8
F-8
11
3-OR-1
8
L 102-7867
WIRES L908-OR AND 909-BU TO BE TWISTED AROUND
EACH OTHER AT LEAST 1 TURN PER 25mm.
(NOTE C)
(NOTE C)
(NOTE C)
1
3
4
6
7
9
10
12
2
5
8
11
1
2
3
D
D
D
D
DD
D
GROUND
STRAP
132-1805
D D
D
D
D D
D
D
D
D
D
235-BK18
UPPER WIPER
MOTOR
147-7982
GND
B+
P
T
°
MOTOR
L
H
BR
GY
BK
OR
GN
A-3
F-8
A-9
E-1
G-1
B-2 (NOTE B)
D-3
H-3
B-2
A-2
G-1
G-1
A-6
A-2
A-3