330B FOREST MACHINE ELECTRICAL SCHEMATIC USED IN SERVICE MANUAL SENR1900

©
1996 Caterpillar
All Rights Reserved
Printed in U.S.A.
SENR1688
December 1996
330B L Forest Swing Machine
Electrical System
6DR1-UP
Component Location
Component
Schematic
Location
Machine
Location
Component
Schematic
Location
Machine
Location
Actuator - Engine Gov A-9
1
Sender - Hydraulic Oil Temp A-5
11
Alarm - Travel G-9
2
Sensor - Engine Speed B-8
6
Alternator C-8
3
Sensor-Fuel Level A-5
12
Assembly - Terminal Block F-8
D
Sensor - Pump Discharge Press B-8
13
Batteries - 12VDC H-8, l-8
4
Sensor - Sun Load F-1
E
Breaker - Alternator I-8
D
Solenoid - A/C Clutch C-9
14
Breaker - Main I-8
D
Solenoid - Eng/Pump Control A-7
15
Control - Engine/Pump F-2
C
Solenoid - Engine Shutdown B-8
6
Controller - Wiper/Washer E-1
E
Solenoid - Fine Swing E-7
16
Converter - Voltage C-S
A
Solenoid - Grapple E-7
16
Diode - Main Relay H-7
D
Solenoid - Hydraulic Lock I-1
F
Fuses I-4,5,6
B
Solenoid-Level Finish A-7
15
Ground - Cab B-5
5
Solenoid - Rotate D-7
16
Ground - Cab E-1
E
Solenoid - Start Aid H-9
17
Ground - Chassis A-3
6
Solenoid - Swing Brake E-7
16
Ground - Chassis A-8
7
Solenoid - Travel Speed A-7
15
Ground - Chassis I-8
D
Solenoid - Trenching A-7
15
Ground - Platform G-2
F
Switch - Air Cleaner Flow H-9
18
Ground - Platform H-1
F
Switch - Aux Hydraulic Pressure H-3
B
Ground - Relay Panel H-7
D
Switch - Backup EPR Valve E-5
C
Ground Strap - Chassis to Platform I-6
8
Switch - Backup Governor D-5
C
Ground Strap - Chassis to Riser H-1
F
Switch - Boom Raise Pressure D-7
C
Horn A-2
7
Switch-Coolant Level H-9
17
Lighter E-1
E
Switch - Disconnect I-8
D
Meter - Service F-1
E
Switch - Engine Oil Press B-9
19
Monitor F-1
E
Switch - Fine Swing Control D-4
C
Motor - Starter B-B
6
Switch - Grapple Close F-2
C
Motor - Tilt I-9
F
Switch - Grapple Open I-1
B
Motor - Upper Washer I-9
D
Switch - Horn I-1
B
Motor - Upper Wiper C-5
9
Switch - Hydraulic Oil Filter A-5
11
Radio - 12VDC C-6, I-3
A
Switch - Hydraulic Oil Level A-5
11
Relay - Boom Lamp I-7
D
Switch - Implement Pressure D-7
16
Relay - Cab/Chassis Lamp E-8
D
Switch - Key F-2
C
Relay - Cab/Chassis Lamp I-7
D
Switch - Neutral Start Limit I-1
B
Relay - Grapple Close H-6
F
Switch - One Touch Low Idle F-2
C
Relay - Grapple Open H-5
F
Switch - Refrigerant Low Press C-9
17
Relay - Horn I-7
D
Switch - Rotate CCW F-2
C
Relay - Hydraulic Lock Solenoid I-7
D
Switch - Rotate CW I-1
B
Relay - Main G-7
D
Switch - Start Aid D-5
C
Relay - Neutral Start F-7
D
Switch - Start Aid Coolant Temp B-9
10
Relay - Rotate CCW H-6 F Switch - Suction Line Shutoff Limit A-6 11
Relay - Rotate CW H-5 F Switch - Throttle Position E-3 C
Relay - Start F-8 D Switch - Travel Pressure D-7 16
Relay - Timer E-7 D Switch Panel F-2 C
Resistor - Backup I-B D Unit - A/C, Heater H-5 20
Sender - Coolant Temperature B-9 10
Machine locations are repeated for components located close together.
A Located in operator’s compartment. D = Located on or near relay panel.
B = Located in operator’s left console area. E = Located in dash area.
C = Located in operator’s right console area. F = Located in Cab Riser.
Off Machine Switch Specification
Part No. Function Actuate Deactuate Contact Position
3E-6449 Start Aid Coolant Temperature
38.0 ± 3.0°C
(100.4 ± 5.4°F)
27 °C MIN
(80.6 °F MIN)
Normally Closed
3E-6455 Engine Oil Pressure
90 ± 21 kPa
(13 ± 3.0 psi)
70 ± 21 kPa
(10 ± 3.0 psi)
A-B, Normally Open
A-C, Normally Closed
106-0179 Implement Pressure Travel Pressure
1225.00 ± 98.00 kPa
(177.67 ± 14.21 psi)
882.00 kPa MIN
(127.92 psi MIN)
Normally Open
106-0180 Boom Raise Pressure
2646.00 ± 196.00 kPa
(383.77 ± 28.43 psi)
2156.00 ± 196.00 kPa
(312.70 ± 28.43 psi)
Normally Open
106-0181 Hydraulic Pressure
490.00 ± 49.00 kPa
(71.07 ± 7.11 psi)
290.00 kPa MIN
(42.06 psi MIN)
Normally Open
114-5333 A/C High/Low 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 postion at the contacts of the harness connector.
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 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 break 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 one of the specified 10.
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
3
4
5
6
8
9
10
11
12
14
15
13
16
B
C
D
E
1
2
17
18
19
20
21
22
23
24
7
F
A
3
4
5
6
8
9
10
11
12
14
15
13
16
B
C
D
E
1
2
17
18
19
20
21
22
23
24
7
F
Machine Harness Connector and Component Locations
Part No.
Component Description Resistance (Ohms)¹
102-8017 Resistor - Backup 52.0 ± 2.6
134-3998 Solenoid - A/C Clutch 17.6 ± 0.6
111-9916 Solenoid - Engine/Pump Control 11.7 ± 1 .2
3E-7985 Solenoid - Engine Shutdown
Start (Latch) Coil - 1.55 ± 0.15
Stop (Unlatch) Coil - 10.3 ± 1.03
3E-9205 Solenoid - Grapple 24.9
121-1491 Solenoid -
Hydraulic Lock
Swing Brake
Travel Speed
32.0 ± 3.2
121-1490 Solenoid -
Level Finish
Trenching
32.0 ± 3.2
3E-6332 Solenoid - Start Aid 6.0
¹ At room temperature unless otherwise noted.
Connector Location
Connector Number
Schematic
Location
Machine
Location
CONN 1 A-9 21
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 5
CONN 11 C-5 5
CONN 12 C-5 F
CONN 13 C-5 F
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-5 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 F
CONN 31 B-3 7
CONN 32 A-3 22
CONN 33 B-2 23
CONN 34 Service Connector D-2 C
CONN 35 B-2 24
CONN 36 G-5 F
CONN 37 G-5 F
CONN 38 G-8 F
CONN 39 G-8 F
CONN 40 G-8 F
CONN 41 F-9 F
CONN 42 F-9 F
CONN 43 G-9 F
CONN 44 G-9 F
CONN 45 G-9 D
CONN 46 H-9 F
CONN 47 H-9 F
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.
Title Form Number
Alternator: (100-5047) SENR2082
Engine/Pump Control SENR9291
Starting And Charging SENR9292
Starting Motor: (6V-0512)
Consist: 6V-0512
SENR3860
Starting Motor: (6V-5227)
Consist: 6V-5538
SENR4975
Related Electrical Service Manuals
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.
Wire Description
Wire
Number
Wire
Color
Description
Wire
Number
Wire
Color
Description
Power Distribution Circuits
101 RD Bat (+) 576 PK Wiper - Aux
103 RD Aux Ckt 578 BU Washer - Aux
105 RD Key Sw 590 GY Wiper Sw to Intermittent Module
107 RD Eng Shutdown 592 BU DC/DC Converter Power Output
108 BU Aux Ckt A513 RD DC/DC Converter Memory Output
109 RD Alt Output (+) Term A571 PU Aux Ckt 1
111 RD Aux Ckt A572 PK Aux Ckt 2
112 PU Main Power Rly Output A579 OR Wiper Motor (+)
113 OR Opr Mon Panel B (+) Switched A586 OR Wiper Sw to Wiper Cant
114 RD Warning Horn (Forward) A588 GN Safety Sal Relay to Sol
115 PK Aux Ckt C537 GN A/C Photo Sensor (+) Sig
118 GY Aux Ckt C538 OR A/C Photo Sensor (-) Sig
120 YL Aux Ckt
Lighting Circuits
123 WH Aux Ckt 607 PK Flood Lamps - FrontBoom
124 GN A/C 615 YL Cab Flood Lamp
129 BU Aux Ckt 616 BU Flood Lamp
140 BU Aux Ckt
Control Circuits
147 PU Aux Ckt 763 BU Torque Converter Sw
149 PU Aux Ckt 786 GN Eng Speed Cant
150 RD Bat (+) 788 YL Eng Speed (+)
151 GN Aux Ckt 791 PK Eng Speed Cont
152 BU Aux Ckt A755 PK Throttle Sw #1
154 RD Aux Ckt A756 BU Throttle Sw #2
168 RD Aux Ckt A757 GY Throttle Sw #3
172 RD Aux Ckt A758 BR Throttle Sw #4
177 RD Main Brkr A761 PU Elec Pump Cont Gov Feedback
180 GN Aux Ckt A762 PU Elec Pump Cant Eng Speed Ground
185 YL Aux Ckt A768 BU Pump Control Valve #1 (+)
189 RD Aux Ckt A769 GY Pump Control Valve #2 (-)
191 WH Aux Ckt A770 PK Elec Pump Control Bypass Sw
A771 PU Float Sw
200 BK Main Chassis F771 OR Backup Sw
201 BK Opr Mon Panel F772 WH Backup Sw
235 BK Elec Pump Ctrl Gnd F773 OR Governor Accel
Basic Machine Circuits
F774 WH Governor Decel
301 BU Starter No. 1 Sol
J704 WH Hyd Lock Sal Relay to Grapple and Rotate Sw
304 WH Starter Rly No. 1 Output
J705 WH Rotate CCW Relay to Sol
306 GN Starter Rly Coil
J706 PU Grapple Close Relay to Sol
307 OR Key Sw to Neut Start Sw
J707 YL Grapple Open Relay to Sol
308 YL Main Power Rly Coil
J708 BR Rotate CW Relay to Sol
310 PU Start Aid Sw to Start Aid Sol
J709 GN Cab/Chassis Lamp Relay
311 WH Start Aid Sol to Temp Sw
J710 WH Aux Ckt
320 OR Horn Rly Coil to Sw
J711 GN Aux Ckt
321 BR Travel Alarm Lamp
J712 YL Aux Ckt
322 GY Warning Horn (Forward)
J713 BU Aux Ckt
326 RD Key Sw "C" Term
J714 BR Aux Ckt
386 PK Air Shutoff Enable
J715 OR Aux Ckt
961 GN Hyd Cont Sw
403 GN Alternator (R) Term
K903 BR Dual HP Relay to Controller
405 GY Opr Mon Oil Press
K904 GN Pump Discharge - Signal
412 BU Opr Mon Cool Flow
K905 RD Pump Discharge - (+) B
430 BU Opr Mon Air Filter
K906 GN Swing Brake Sol - Signal
487 OR Hyd Oil Flow Sw
K907 BU Swing Brake Sal - (+) B
491 PK Hyd Oil Temp Sensor
K909 BU Backup Sw - (+) B
492 GY Coolant Temp Sensor
K911 PK E/P Controller - RS485 (+)
495 GN Fuel Level
K912 GN E/P Controller - RS485 (-)
496 WH Opr Mon Panel Hyd Oil Level
K915 GN Fine Swing Sw - E/P Controller
C468 BU Engine Oil Level
K997 BU (+) V Sensor
L908 OR Controller RS-232C TX
501 GN Wiper - Front
L909 BU Controller RS-232C RX
506 PU Washer - Front
L968 OR Elec Pump Control PS Valve (-)
508 PU Radio Speaker - Left
L969 WH Elec Pump Control PS Valve (+)
509 WH Radio Speaker - Left (Common)
L970 GY Elec Pump Control to Switch Return
511
BR Radio Speaker - Right
L971 GN Elec Pump Control to Travel Pressure Sw
512 GN Radio Speaker - Right (Common)
L972 BU Low Idle Sw
513 OR A/C Compressor/Refrigerant Press Sw
L973 GN Fine Swing Cont Relay to Sol Valve
519 PK Thermostat to Refrigerant Press Sw
L974 GN Elec Pump Cant Boom Raise Press Sw
546 BU Aux Hyd - Rotate CW
L975 PK Start Aid Cant Lamp 1 Output
547 OR Aux Hyd - Rotate CCW
L977 YL Trenching Sol
548 GY Aux Hyd - Open
L978 GY Level Finish Sol
549 PK Aux Hyd - Close
Ground Circuits
Monitoring_Circuits
Accessory Circuits
Accessory Circuits Cont
F774-WH-18
F773-OR-18
A761-PU-18
K904-GN-18
430-BU-18
K906-GN-18
A771-PU-18
763-BU-18
200-BK
112-PU-6
K909-BU-18
151-GN-18
308-YL-18
307-OR-18
791-PK-18
615-YL
786-GN-18
149-PU
320-OR-18
A770-PK-18
200-BK
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
200-BK-18
235-BK-14
200-BK-14
103-RD-18
506-PU-18
403-GN-18
A771-PU-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
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
107-RD
320-OR-18
151-GN-18
118-GY
512-GN-18
511-BR-18
509-WH-18
508-PU-18
103-RD-18
519-PK-18
113-OR-18
185-YL-18
105-RD
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
200-BK-14
519-PK-18
103-RD-18
403-GN-18
403-GN-18
403-GN-18
403-GN-18
200-BK-18
200-BK-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
200-BK-18
200-BK-18
615-YL-18
235-BK-14
615-YL
615-YL
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
788-YL-18
A771-PU-18
A586-OR-18
501-GN-18
590-GY-18
200-BK-18
200-BK-18
147-PU-18
140-BU
149-PU
151-GN-18
320-OR-18
107-RD
112-PU-6112-PU-14
112-PU-14
112-PU-14
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
185-YL18
200-BK-18
320-OR-18
151-GN-18
200-BK-18
320-OR-18
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
308-YL-18
616-BU
149-PU
786-GN-18
320-OR-18
A588-GN-18
151-GN-18
200-BK-18
200-BK-18
791-PK-18
A770-PK-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
308-YL-18
K909-BU-18
A770-PK-18
791-PK-18
200-BK-18
151-GN-18
A588-GN-18
320-OR-18
786-GN-18
149-PU
616-BU
308-YL-18
308-YL-18
A770-PK-18
K909-BU-18
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
111-RD-14
189-RD-14
A AK
112-PU-14
112-PU-14
112-PU-14
149-PU
140-BU
200-BK-18
200-BK-18
200-BK-14
103-RD-18
147-PU-18
200-BK-18
J704-WH-18
J704-WH-18
200-BK-14
200-BK-14
403-GN-18
200-BK-18
112-PU-14
J704-WH-18
548-GY-18
549-PK-18
185-YL-18
112-PU-14
112-PU-14
112-PU-14
1
961-GN-18
AH
180-GN
200-BK-18
548-GY-18
311-WH-18
310-PU-18
RISER
CHASSIS
200-BK-4200-BK-4
101-RD-4
2
1
1
200-BK-4
101-RD-4
2
J715-OR
J714-BR
AK
J713-BU
101-RD-4
200-BK-4
200-BK-18
101-RD-4
1
2
3
4
5
6
616-BU
200-BK
200-BK-18
200-BK-18
200-BK-18
2
1
J712-YL
6
5
4
3
2
1
J711-GN
547-OR-18
546-BU-18
J710-WH
AK
AK
A
107-RD
1
2
3
4
5
6
7
8
9
103-RD-18
10
105-RD
149-PU
191-WH-14
11
12
A
A
AK
AK
A
A
AK
7
3
1
2
11
12
10
4
5
6
9
8
118-GY
124-GN-14
120-YL
11
12
1
2
3
4
5
6
7
8
9
1010
9
8
7
2
6
5
4
3
2
1
12
11
L61
L55
AKA
A
L45
L61
AH
321-BR-18
AK
L55
1
2
4
3
J707-YL-18
J706-PU-18
101-RD-4
MOTOR
AL
A
AK
AK
AK
D
AK
A
AM
A
10
9
8
11
7
1
2
12
3
6
5
4
12
A
11
3
10
9
8
7
1
7
2
6
4
3
5
2
1
3
6
4
5
AK
9
1
11
5
200-BK
200-BK-4
115-PK-14
123-WH-14
TILT MOTOR
113-5794
200-BK-18
200-BK-18
123-WH-18
115-PK-14
200-BK-18
200-BK-18
J709-GN-18
J709-GN-18
L53
607-PK
615-YL
607-PK
615-YL
615-YL
607-PK
615-YL
607-PK
AK
115-PK-18
J709-GN-18
L53
115-PK-14
J709-GN-18
200-BK-18
J709-GN-18
200-BK-18
123-WH-14
607-PK
2
1
4
3
5
6
A
J
200-BK-18
12
115-PK-18
115-PK-18
K904-GN-18
11
10
200-BK-18
200-BK-18
ATCH START
AID SOL
3E-6332
200-BK-18
200-BK-18
200-BK-18
A769-GY-18
A768-BU-18
763-BU-18
615-YL
200-BK-18
200-BK-18
200-BK-18
607-PK
615-YL
6
1
3
5
1
AIR CLEANER SW
109-9330
A768-BU-18
2
7
A769-GY-18
8
9
4
J
607-PK
A
L55
AK
AK
200-BK-18
L56
200-BK-18
TRAVEL ALARM
3E-7738
L61
L61
2
B
COOLANT
LEVEL SW
109-9436
1
2
MOTOR
UPPER WASHER
7T-8890
L56
A
AL
BATTERY
3T-5760
NEG
POS
NEG
POS
NEG
POS
NEG
POS
ATCH
BATTERY
3T-5760
(NOTE C)
200-BK-18
200-BK-18
L57
320-OR-18
AH
AH
J705-WH-18
200-BK-18
J708-BR-18
200-BK-18
CAB/CHASSIS
LAMP RELAY
111-4871
2
1
2
1
200-BK-18
J708-BR-18
200-BK-18
J705-WH-18
CAB/CHASSIS
LAMP RELAY
111-4871
L61
2
1
J708-BR-18
J705-WH-18
L977-YL-18
L978-GY-18
L978-GY-18
763-BU-18
L977-YL-18
L56
L55
200-BK-18
200-BK-18
200-BK-18
200-BK
J706-PU-18
200-BK-18
J707-YL-18
200-BK-18
A770-PK-18
1
2
4
3
GRAPPLE SOL
3E-9205
200-BK-18
J707-YL-18
200-BK-18
J706-PU-18
ROTATE
CW
AH
OPEN
200-BK-18
200-BK-18200-BK-18200-BK-18
ROTATE CW
RELAY
111-4871
GRAPPLE OPEN
RELAY
111-4871
GRAPPLE CLOSE
RELAY
111-4871
200-BK-18
CLOSE
180-GN
K909-BU-18
200-BK-18
ROTATE
CCW
308-YL-18
4
200-BK-18
200-BK-18
200-BK-18
200-BK-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
5
K909-BU-18
K997-BU-18
PUMP DISCHARGE
PRESS SENSOR
106-0178
SIGNAL
GROUNDBK-18
BR-18
YL-18
B
C
B
3
5
AG
3
A
M
H
G
I
E
D
C
B
A
F
H
G
I
E
D
C
B
A
F
4
F
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
2
200-BK-14
2
9 8 7 6 5 4 3 2
1
9 8 7 6 5 4 3 2
1
1
L59
L58
BK-00
386-PK-18
616-BU
DISCONNECT SW.
7N-0719
ALT BREAKER
9S-0174
L44
YY
UU
VV
5
4
6
3
1
2
BACKUP
RESISTOR
102-8017
HYD LOCK SOL RELAY
111-4871
5
3
4
6
2
1
7
8
9
10
11
12
506-PU-18
B
CHASSIS
L42
L41
L29
L30
MAIN RELAY
3T-0376
CAB/CHASSIS LAMP SWITCH RELAY
111-4871
578-BU-18
4
5
60A
200-BK-18
200-BK-18
AK
6
3
12
2
1
7
11
8
9
HORN RELAY
111-4871
BOOM LAMP RELAY
111-4871
10
AK
B
CHASSIS
L30
L28
DIODE
121-1022
L28
L29
L30
L29
L41
L42
L42
L41
ZZ
C468-BU-18
200-BK-18
306-GN-18
177-RD-8
200-BK-18
386-PK-18
616-BU
306-GN-18
304-WH-8
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
L973-GN-18
487-OR-18
200-BK-18
L971-GN-18
L977-YL-18
L974-GN-18
L978-GY-18
ENG/PUMP CONT
126-3022
L971-GN-18
L970-GY-18
L977-YL-18
L974-GN-18
L969-WH-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
L972-BU-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
519-PK-18
AKAG
AJ
546-BU-18
548-GY-18
549-PK-18
J708-BR-18
J705-WH-18
495-GN-18
321-BR-18
412-BU-18
306-GN-18
2
306-GN-18
306-GN-18
615-YL-18
3
AD
4
1
NOTE E : REM'D WITH ATCH HEATER OPTION.
ROTATE CCW
RELAY
111-4871
487-OR-18
310-PU-18
107-RD
103-RD-18
177-RD-14
177-RD-14
RELAY PANEL
L59
549-PK-18
J707-YL-18
AJ
177-RD-14
2
1
4
3
2
177-RD-14
177-RD-14
177-RD-14
1
4
3
5
6
180-GN
177-RD-14
200-BK-18
306-GN-18
547-OR-18
J706-PU-18
L60
L58
177-RD-14
6
200-BK-18
308-YL-18
177-RD-6
3
K909-BU-18
307-OR-18
200-BK-18
177-RD-14
4
1
2
200-BK-18
546-BU-18
200-BK-18
549-PK-18
548-GY-18
547-OR-18
AG
AG
L60
L58
549-PK-18
496-WH-18
200-BK-18
BK
YL
115-PK-14
RD-00
RD-00
177-RD-14
ATCH
SUCTION LINE
SHUTOFF LIMIT SW
3E-5181
B
HYD OIL
FILTER SW
133-6875
GROUND
SIGNAL
+B
C
B
A
177-RD-14
BB
B
ROTATE SOL
127-7487
HORN
SW
GRAPPLE
OPEN
177-RD-14
177-RD-14
177-RD-14
ROTATE
CW
177-RD-14
177-RD-14
177-RD-14
506-PU-18
578-BU-18
177-RD-14
177-RD-14
177-RD-14
177-RD-14
112-PU-6
BR
WH
GY
L58
HYD OIL
TEMP SENDER
4I-5394
FUEL LEVEL
SENSOR
105-9911
4
1 2
3
2
1
HYD OIL
LEVEL SW
111-4760
2
T°
1
B
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
CONTROL GP
136-1206
VVAD
AD
615-YL
200-BK
177-RD-6
109-RD-6
101-RD-6
172-RD-18
111-RD-14
615-YL
200-BK
101-RD-6
147-PU-18
101-RD-6
MAIN BREAKER
9S-0174
1
2
2
118-GY
1
124-GN-14
12
4
10
2
6
112-PU-14
200-BK-14
200-BK-14
K912-GN-18
K911-PK-18
403-GN-18
185-YL-18
615-YL-18
K911-PK-18
K912-GN-18
149-PU
A586-OR-18
590-GY-18
501-GN-18
A755-PK-18
A756-BU-18
A757-GY-18
A758-BR-18
L972-BU-18
200-BK-14
103-RD-18
118-GY
615-YL-18
506-PU-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
112-PU-14
112-PU-14
180-GN
189-RD-14
590-GY-18
501-GN-18
A586-OR-18
103-RD-18
8
103-RD-18
508-PU-18
509-WH-18
511-BR-18
512-GN-18
118-GY
103-RD-18
140-BU
105-RD
107-RD
103-RD-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
147-PU-18
200-BK-18
115-PK-14
112-PU-6
120-YL
191-WH-14
180-GN180-GN
BU
CAB LAMP
135-0550
10A
10A
15A
10A
10A
10A
A A
ENG GOV
15A
7
8
1
6
5
4
3
2
PLATFORMRISER
GROUND STRAP
7G-1060
K909-BU-18
CAB/CHASSIS LAMP
RADIO
LOWER WASHER/WIPER
WASHER/WIPER
H H
CIGAR LIGHTER
A/C /HEATER
10A
HORN
FUSE
10A 9W-1442
15A 9W-1441
BACKUP
A
615-YL
200-BK
615-YL
15A
DOME LAMP
KEY SW
BOOM LAMP
FINE SWING
10A
10A
10A
10A
10A
10A
10A10A
10A
10A
15A
10A
15A
BK
BK
E/P CONT
HYD LOCK SOL
10A
200-BK
304-WH-8
SHUTDOWN
AUX CKT
CAB LAMP
135-0550
ATCH LUBRICATOR
L58
J705-WH-18
6
8
1
7
4
5
3
2
HYD LOCK SW
J706-PU-18
JJJ
J
J
J
FUSE BASE
111-4812
J707-YL-18
506-PU-18
C
B
A
403-GN-18
RD
BR
152-BU
118-GY
J708-BR-18
112-PU-6
152-BU
200-BK-18
200-BK-18
MONITOR +B OUT
L968-OR-18
A761-PU-18
L978-GY-18
A755-PK-18
763-BU-18
A756-BU-18
GRAPPLE CLOSE
CONTROL GP
136-1206
A771-PU-18
A757-GY-18
177-RD-8
K997-BU-18
200-BK-4
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
A758-BR-18
152-BU
496-WH-18
101-RD-4
L57
K
AF
1
2
308-YL-18
L975-PK-18
615-YL
L57
101-RD-4
ZZ
200-BK-18
200-BK-18
2
1
AF
2
1
200-BK-4
CHASSIS
LAMP
135-0550
200-BK-18
547-OR-18
546-BU-18
J706-PU-18
200-BK-18
AE
K997-BU-18
2
1
2
1
AM
AL
AJ
AK
AF
AH
AG
AM
L10
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
J704-WH-18
615-YL
308-YL-18
576-PK
200-BK-18
200-BK
200-BK-18
114-RD
114-RD
114-RD
235-BK-18
K997-BU-18
A
546-BU-18
1
8
6
10
12
7
9
11
2
J704-WH-18
547-OR-18
191-WH-14
5
K997-BU-18
4
200-BK-14
L970-GY-18
152-BU
235-BK-18
J704-WH-18
961-GN-18
C468-BU-18
K907-BU-18
F772-WH-18
F771-OR-18
K915-GN-18
K911-PK-18
K912-GN-18
152-BU
60A
3
549-PK-18
548-GY-18
L909-BU-18
L908-OR-18
487-OR-18
K904-GN-18
K905-RD-18
152-BU
235-BK-18
200-BK-18
J704-WH-18
546-BU-18
547-OR-18
A
512-GN-18
511-BR-18
509-WH-18
508-PU-18
CONNECTOR
THROTTLE DIAL S1
THROTTLE DIAL S2
THROTTLE DIAL S3
THROTTLE DIAL S4
GOV ACTR (A)
EPR VALVE (+)
GOV ACTR (B)
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
RS485 - (VALVE CONT)
RS485 + (VALVE CONT)
RS232C (GND)
RS232C (RX)
COOLANT SENSOR
9
20
10
28
31
26
13
30
29
35
40
2
6
39
6
24
25
22
15
ALTERNATOR (R TERM)
RS485 - (RH JOYSTICK)
7
38
12
TRAVEL ALARM
ENG OIL PRESS SW
36
SWING BRAKE SOL
23
EPR VALVE (-)
17
21
8
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)
27
18 TRAVEL PRESS SW
HYD OIL FILTER INDICATOR
18
RS485 - (RADIO CONT)
RS485 + (ELEC GOV)
19
+B
+B
AIH INDICATOR
FINE SWING SW
BOOM RAISE PRESS SW
LEVEL FINISH SOL
DUAL PWR SOL
AUX HYD PRESS 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
A
DOME LAMP
6C-9121
2
3
4
5
6
1
8
7
37
4
3
OPTION SENSOR (PWM)
1
16
19
5
OPTION SENSOR (PWM)
J704-WH-18
32
33
DEGITAL OUT (-)
DEGITAL OUT (-)
14
11
34
SPEAKER (L)
6T-7695
SPEAKER (R)
6T-7695
2
1
8
3
5
4
7
6
129-BU
120-YL
A
1
113-OR-18
6
4
3
2
4
3
1
2
123-WH-14
F
F
F
F
E E
A
A A
A/C
UNIT
126-3376
177-RD-8
L7
PLATFORM
A
JOY STICK +B OUT
BK-00
RD-00
RD-00
AK
CHASSIS
DD
DD
GG
(NOTE C)
CC
BK-00
FF (NOTE C)
BB
EE (NOTE C)
AA
L15
L971-GN-18
L15
BB
115-PK-14
189-RD
154-RD-18
111-RD-14
150-RD-18
K997-BU-18
189-RD
154-RD-18
111-RD-14
150-RD-18
BB
C538-OR-18
B
C537-GN-18
AK
AK
L45
L15
L50
RELAY PANEL
114-RD-18
114-RD-18
L15
D
AK
L48
L47
200-BK-18
150-RD-18
189-RD
154-RD-18
111-RD-14
150-RD-18
548-GY-18
150-RD-18
114-RD
154-RD-18
189-RD
111-RD-14
K909-BU-18
150-RD-18
K909-BU-18
786-GN-18
177-RD-14
L10
320-OR-18
A513-RD-18
592-BU-18
L10
C538-OR-18
C537-GN-18
549-PK-18
548-GY-18
308-YL-18
576-PK
200-BK
5
A
A
3
1
4
2
576-PK
K906-GN-18
386-PK-18
200-BK-18
326-RD
129-BU
403-GN-18
615-YL-18
103-RD-18
C538-OR-18
K997-BU-18
A768-BU-18
172-RD-18
12
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
310-PU-18
311-WH-18
430-BU-18
200-BK-18
200-BK-18
412-BU-18
111-RD-14
189-RD
154-RD-18
154-RD-18
189-RD
177-RD-14
111-RD-14
RELAY PANEL
11
10
9
K912-GN-18
K911-PK-18
200-BK-18
501-GN-18
L974-GN-18
C537-GN-18
K906-GN-18
506-PU-18
590-GY-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
UNLESS OTHERWISE SPECIFIED ALL WIRE IS 16 GAGE.
COMPONENTS ARE SHOWN INSTALLED ON A FULLY
OPERABLE MACHINE WITH THE KEY AND ENGINE OFF.
HH
GG
FF
EE
DD
CC
BB
AA
137-6955 I-9
137-6954 I-9
7Y-8132 A-9
116-0242 H-8
116-0080 H-8
116-0162 A-8
111-4881 I-8
125-4727 I-8
116-0080 I-8
116-0161 A-8
CABLE AS.
VV
WIRE AS.
L974-GN-18
200-BK-18
200-BK-18
200-BK-18
200-BK-14
A586-OR-18
A579-OR
GN
YL
200-BK-14
K
J
H
F
E
D
C
B
GY
PU
BR
RED
WHITE
ORANGE
YELLOW
PINK
ABBREV COLOR
BLACK
GRAY
PURPLE
BROWN
DESCRIPTIONSYMBOL
CONNECTOR
ELECTRICAL CONNECTION
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
310-PU-18
509-WH-18
508-PU-18
512-GN-18
511-BR-18
A513-RD-18
592-BU-18
200-BK-18
A513-RD-18
615-YL
CONVERTER
112-3543 (2.5A)
615-YL
L971-GN-18
A771-PU-18
L974-GN-18
K906-GN-18
495-GN-18
6
1
2
3
4
5
616-BU
496-WH-18
487-OR-18
491-PK-18
GND
306-GN-18
386-PK-18
L977-YL-18
763-BU-18
OUT
L978-GY-18
IN
MEM
A768-BU-18
A769-GY-18
K904-GN-18
K997-BU-18
IGN
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
A761-PU-18
F773-OR-18
113-OR-18
A586-OR-18
501-GN-18
590-GY-18
F774-WH-18
L52
326-RD
405-GY-18
788-YL-18
A762-PU-18
C468-BU-18
200-BK-18
304-WH-8
607-PK
322-GY
K909-BU-18
492-GY-18
607-PK
311-WH-18
B
ANTENNA
8E-1118
495-GN-18
616-BU
L18
495-GN-18
200-BK-18
616-BU
311-WH-18
A
J
321-BR-18
412-BU-18
430-BU-18
310-PU-18
8
7
5
4
3
2
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
200-BK-18
200-BK-18
200-BK-18
L44
200-BK
WH-18
A762-PU-18
L53
200-BK-18
200-BK
200-BK-18
200-BK-18
200-BK-18
405-GY-18
492-GY-18
311-WH-18
519-PK-18
200-BK
200-BK
301-BU-10
L969-WH-18
301-BU-14
301-BU-10
200-BK-10
200-BK-18
200-BK-18
172-RD-18
A761-PU-18
F773-OR-18
F774-WH-18
101-RD-6
513-OR-18
MOTOR
F774-WH-18
A/C CLUTCH
SOL
134-3998 (NOTE E)
ALT
R
B+
200-BK-18
A770-PK-18
L968-OR-18
BU-18
A
200-BK-18
B
C
304-WH-8
788-YL-18
519-PK-18
200-BK-18
F773-OR-18
311-WH-18
311-WH-18
A762-PU-18
200-BK-18
492-GY-18
492-GY-18
ENG SPEED
SENSOR
6V-2455
RD-18
BK-18
CHASSIS
ENG OIL
PRESS SW
3E-6455
1
2
L8
A761-PU-18
200-BK-18
L52
788-YL-18
L970-GY-18
200-BK-18
405-GY-18
172-RD-18
12 VDC RADIO
3E-7140
(NOTE F)
326-RD
C468-BU-18
403-GN-18
L8
L8
109-RD-6
200-BK-18
ATCH
START AID
COOLANT TEMP SW
3E-6449
B-
STARTER
MOTOR
6V-5227
6V-0512 (NOTE C)
304-WH-8
B
G
L8
L20
S
MTR BAT
306-GN-18
ENG
SHUTDOWN SOL
3E-7985
L20
200-BK-18
200-BK-18
L8
200-BK-18
L8
101-RD-6
RD-00
RD-00
616-BU
547-OR-18
C
304-WH-8
200-BK-10
B
B
1
200-BK-6
2
2
1
BK-00
ENG OIL
LEVEL SW
111-4759
405-GY-18
ALTERNATOR
100-5047
200-BK-18
C
K905-RD-14
150-RD-18
150-RD-18
150-RD-18
150-RD-18
150-RD-18
154-RD-18
L40
L17
200-BK-18
200-BK-18
KEY
B
L17
L38
L37
L17
C
615-YL-18
615-YL-18
200-BK-18
L8
B
115-PK-14
K905-RD-14
150-RD-18
108-BU
B
B
154-RD-18
L970-GY-18
K905-RD-14
172-RD-18
L973-GN-18
L15
L17
ANTENNA
CABLE
8R-6111
L40
L39
L39
L8
L38
L37
YY
147-PU-18
615-YL-18
615-YL-18
L37
L38
578-BU-18
177-RD-14
L973-GN-18
322-GY
L39
200-BK-18
115-PK-14
200-BK-18
172-RD-18
189-RD
154-RD-18
150-RD-18
607-PK
K907-BU-18
111-RD-14
K905-RD-14
L22
2
1
OUT 1
+B
IN 2
IN 1
L21
GND
OUT 2
L20
UU
L19
ZZ
YY
HH
XX
WW
12
1
8
2
K905-RD-14
10
11
3
4
180-GN
168-RD
J
1
2
9
TIMER RELAY
111-4870
7
6
XX
GND
180-GN
CONV (OUT)
K905-RD-14
5
615-YL-18
NEUTRAL
START RELAY
111-4871
START RELAY
125-1302
10A
200-BK-18
K909-BU-18
200-BK-18
200-BK-18
L21
XX
L19
200-BK-18
200-BK-18
185-YL-18
K909-BU-18
L3
L18
L22
L21
L18
L58
L34
L8
L19
L3
L34
L4
L25
L19
L3
L25
L4
L33
L21
168-RD
L31
L9
114-RD
L12
L13
AUX CKT
200-BK-18
L9
592-BU-18
ENG GOV
ACTUATOR
106-0126
L31
HH
L33
L33
L33
L33
K915-GN-18
C
308-YL-18
L19
L3
L25
L4
L4
L25
L3
L19
L20
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
6
L2
K997-BU-18
K997-BU-18
J704-WH-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
DECEL
L27
L26
113-OR-18
615-YL
L27
L26
F771-OR-18
F773-OR-18
F774-WH-18
F772-WH-18
615-YL-18
101-RD-6
A769-GY-18
J704-WH-18
113-OR-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
129-BU
109-RD-6
129-BU
SWITCH PANEL
1
113-OR-18
AB
607-PK
200-BK-4
WW
310-PU-18
2
115-PK-14
615-YL-18
615-YL-18
200-BK-18
308-YL-18
H
ATCH START
AID SW
111-4784
546-BU-18
114-RD
BK-18
B
ACCEL
185-YL-18
112-PU-14
L5
151-GN-18
L20
L20
+B
F/B
H
L11
FINE
SWING CONT SW
111-4788
115-PK-14
308-YL-18
GND
HH
AA
EE(NOTE C)
200-BK-6
BACKUP
EPR VALVE SW
114-0421
H H
BACKUP
GOV SW
110-7884
B
H
200-BK-14
200-BK-18
200-BK-18
1
3
2
4
200-BK
615-YL
200-BK
200-BK
200-BK-14
200-BK
CC
T°
ENG COOLANT
TEMP SENDER
128-8945
C
B
B
AK
AK
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
109-RD-6
2
J704-WH-18
J704-WH-18
RH SPKR (-)
RH SPKR (+)
LH SPKR (-)
A
LH SPKR (+)
6
5
3
4
2
1
8
547-OR-18
7
L8
2
152-BU
1
B
2
1
B
SWING
BRAKE SOL
121-1491
IMPLEMENT
PRESS SW
106-0179
TRAVEL
PRESS SW
106-0179
1
L47
L47
L50
L48
AK
B
B
T°
B
DB
172-RD-18
322-GY
L51
607-PK
L49
L51
L49
L50
L51
113-OR-18
L45
L44
L42
L41
L29
L30
L44
L42
L41
L29
L30
L30
L29
L41
GG
L6
A588-GN-18
123-WH-14
109-RD-6
961-GN-18
F
108-BU
120-YL
-
+
-
+
512-GN-18
511-BR-18
509-WH-18
508-PU-18
403-GN-18
B
B
B
200-BK-18
L54
REFRIGERANT
LOW PRESS SW
114-5333 (NOTE A)
(NOTE E)
513-OR-18
519-PK-18
PK
1
2
C
4
616-BU
200-BK
3
2
103-RD-18
118-GY
A579-OR
F
615-YL
615-YL
UPPER WIPER
MOTOR
134-5551
200-BK-14
GND
B+
P
T°
L42
MOTOR
L
H
386-PK-18
306-GN-18
491-PK-18
1
487-OR-18
180-GN
496-WH-18
200-BK-18
386-PK-18
WH-18
WH-18
WH-18
WH-18
306-GN-18
B
491-PK-18
200-BK-18
200-BK-18
L44
A571-PU
3
616-BU
H
4
A572-PK
BR
A572-PK
A571-PU
180-GN
615-YL
322-GY
200-BK
200-BK
1
2
WIPER
W INT
W LOW
PUMP
+B
WASH
GND
GND
H
M
A572-PK
A571-PU
H
326-RD
180-GN
961-GN-18
961-GN-18
549-PK-18
200-BK-14
AE
4
200-BK
H
H
WH
J704-WH-18
BK
200-BK-18
548-GY-18
J704-WH-18
326-RD
308-Yl-18
200-BK-18
200-BK-18
J
J
615-YL
L54
L970-GY-18
A579-OR
118-GY
M
M
CAB LAMP
135-0550
CAB LAMP
135-0550
L54
1
3
2
A758-BR-18
118-GY
115-PK-14
111-RD-14
2
1
8
7
5
6
4
3
508-PU-18
322-GY
509-WH-18
511-BR-18
J
512-GN-18
L54
F
307-OR-18
A757-GY-18
615-YL-18
A756-BU-18
+B
200-BK-18
J
576-PK
615-YL
120-YL
118-GY
GY
BK
A513-RD-18
OR
A755-PK-18
L45
C538-OR-18
200-BK-18
129-BU
C537-GN-18
C538-OR-18
BLOCK
121-1023
607-PK
L971-GN-18
A771-PU-18
L971-GN-18
A771-PU-18
L45
152-BU
506-PU-18
L49
115-PK-18
ATCH HYD CTL
J
A
GN
200-BK
105-RD
A586-OR-18
549-PK-18
549-PK-18
C537-GN-18
HYD OIL FILTER SW
113-OR-18
5
L7
L59
A513-RD-18
548-GY-18
ANTENNA CABLE
134-4430
501-GN-18
3
592-BU-18
200-BK-18
L24
12 VDC RADIO
103-8525
REMOVAL TOOL
7Y-5493
172-RD-18
322-GY
168-RD
150-RD-18
K912-GN-18
616-BU
A
C538-OR-18
201-BK-18
200-BK-18
C
B
A
103-RD-18
RH SPKR (-)
C537-GN-18
M
5
4
3
2
1
118-GY
108-BU
129-BU
A579-OR
A513-RD-18
615-YL
120-YL
592-BU-18
A579-OR
F
A
113-OR-18
140-BU
123-WH-14
J704-WH-18
615-YL
114-RD
123-WH-14
J704-WH-18
J704-WH-18
A513-RD-18
592-BU-18
177-RD-14
+B
COMP
GND
SUN+
SUN-
320-OR-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
200-BK
616-BU
322-GY
151-GN-18
308-YL-18
ATCH
HEATER UNIT
128-9726
152-BU
519-PK-18
L24
615-YL
114-RD
200-BK-18
J704-WH-18
548-GY-18
200-BK-18
L970-GY-18
L970-GY-18
M
615-YL
CONV (MEM)
K909-BU-18
200-BK
308-YL-18
L53
326-RD
200-BK-14
200-BK-18
200-BK
200-BK-18
129-BU
OPERATOR STATION
123-WH-14
108-BU
1
114-RD
140-BU
322-GY
6
113-OR-18
200-BK
607-PK
113-OR-18
129-BU
607-PK
200-BK-18
103-RD-18
118-GY
A579-OR
A579-OR
108-BU
6
123-WH-14
200-BK
123-WH-14
607-PK
150-RD-18
607-PK
154-RD-18
200-BK
A588-GN-18
L7
A
A
152-BU
C
ATCH FAN
AE
L8
B
200-BK-14
326-RD
108-BU
K911-PK-18
590-GY-18
L6
308-YL-18
403-GN-18
A579-OR
C538-OR-18
C537-GN-18
200-BK-14
201-BK-18
200-BK-18
607-PK
J705-WH-18
3
1
4
J709-GN-18
322-GY
322-GY
2
B
200-BK-14
J704-WH-18
322-GY
615-YL
L972-BU-18
200-BK-18
308-YL-18
200-BK-18
113-OR-18
791-PK-18
786-GN-18
306-GN-18
A586-OR-18
501-GN-18
590-GY-18
L20
CAB
CAB
547-OR-18
J704-WH-18
546-BU-18
J
103-RD-18
120-YL
GND
114-RD
J704-WH-18
115-PK-18
115-PK-18
322-GY
115-PK-14
546-BU-18
6
A
154-RD-18
CONV (OUT)
200-BK
OR
576-PK
CONV (MEM)
B
J704-WH-18
2
AC
4
1
114-RD
200-BK-18
592-BU-18
A513-RD-18
512-GN-18
511-BR-18
509-WH-18
2
1
J704-WH-18
200-BK-18
961-GN-18
615-YL
189-RD
172-RD-18
L21
3
508-PU-18
L20
L5
L11
L12
H
L7
L6
L6
E
CAB
101-RD-6
J
PLATFORM
120-YL
L59
E
E
+
7
H
ONE TOUCH
LOW IDLE SW
L48
L19
114-RD
114-RD
607-PK
J
200-BK-18
HYD
LOCK SOL
121-1491
L15
L17
L15
8
L14
+B
L. CHASSIS
L. BOOM
ATCH LAMPS
306-GN-18
WASH
W. LOW
W. INT
GND
GND
LIGHT
RS485-
+B
MAIN
RS485+
YL
200-BK
200-BK-18
GN
1
2
6
5
4
GROUND STRAP
8X-5802
NEUTRAL START
LIMIT SW
111-4799
180-GN
129-BU
L15
L975-PK-18
AC
K997-BU-18
326-RD
L21
L19
L3
200-BK
L21
L19
L3
L18
L3
L18
308-YL-18
AC
ROTATE CCW
L13
L13
L12
L11
L13
L12
L11
L9
E
K997-BU-18
L7
K905-RD-18
K905-RD-18
L14
L1
A
A
E
L7
L6
L7
AC
AE
B
2
L1
SW INPUT
K905-RD-18
F
AC AF
L20
322-GY
CHASSIS
OPERATOR STATION
S4
S3
S2
S1
COM
K
AB
133-9654 G-5
134-8518 F-9
134-8522 B-2
137-7382 D-7
133-9655 H-3
137-6673 B-2
132-1979 H-3
133-6079 D-3
128-7337 G-1
128-7336 E-1
137-3617 F-8
135-6088 A-9
135-6087 A-3
130-8444 C-2
134-8520 G-1
135-6089 A-2
134-8519 A-2
121-1044 A-6
108-BU
3
B
322-GY
113-OR-18
607-PK
HORN
7T-0970
M
200-BK
STICK LAMP
135-0550
607-PK
200-BK
4
200-BK
616-BU
H
200-BK
MONITOR
106-0172
200-BK
SWITCH PANEL
111-4800
KEY SW
9G-7641
H
607-PK
113-OR-18
322-GY
607-PK
L2
SUN LOAD
SENSOR
128-2162
L3
2
1
-
L2
UU
128-8936 I-8
111-4831 F-8
128-8937 G-7
111-4830 F-8
111-4829 F-8
128-8938 F-8
111-4826 F-8
101-RD-6
SERVICE
METER
6T-7337
CHASSIS
LAMP
135-0550
THROTTLE
POS SW
106-0107
STICK LAMP
135-0550
322-GY
L6
EE
R
C
S
B
WIPER/WASHER
CONTROLLER
127-9838
615-YL
OFF
615-YL
ON
ST
NOTE A : NORMALLY OPEN BEFORE REFRIGERANT CHARGE.
L7
LIGHTER
9W-0335
607-PK
607-PK
2
1
AUX HYD
PRESS SW
106-0181
200-BK
L7
HORN
7T-0969
L6
THIS SCHEMATIC IS FOR THE 330B HEEL BOOM LOG LOADER.
(140-2869)
NOTE C : USE IN COLD WEATHER.
NOTE F : HORIZONTAL MTG LOCATION FOR CASSETTE.
TO MACHINE STRUCTURE
SERVICE
D85066
CONN 1
CONN 32
CONN 31
CONN 33 CONN 35
CONN 30
CONN 34
CONN 10
CONN 11
CONN 12
CONN 13
CONN 14
CONN 15
CONN 16
CONN 17
CONN 18
CONN 19
CONN 20
CONN
21
CONN 37
CONN
36
CONN 22
CONN 23
CONN 24
CONN 25
CONN 26
CONN 27
CONN
29
CONN
28
CONN 41
CONN 2
CONN 9
CONN 42
CO
NN
45
CO
NN
44
CO
NN
5
CONN 4
CONN 43
147-PU-18 1
CONN 3
CONN 38
D
CONN 8
CONN 7
CONN 39
CONN 6
CONN 40
CONN 46
CONN 47
ALL DASHED LINES ARE ATTACHMENTS.
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.
MONITORING CIRCUIT.
WIPER/WASHER CIRCUIT.
HEATER AND AIR CONDITIONER CIRCUIT.
GROUND CIRCUIT.
ENGINE SHUTDOWN CONTROL CIRCUIT.
START AID CIRCUIT.
ENGINE/PUMP CONTROL CIRCUIT.