©1997 Caterpillar
All Rights Reserved
Printed in U.S.A.
RENR1064
December 1997
330B Material Handler
Electrical System
6DR1-UP
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.
A
B
B
C
C
D
D
1
1
2
2
7
7
E
E
A
F
F
3
3
4
4
5
5
6
6
8
8
9
9
10
10
11
11
13
13
12
12
14
14
15
15
16
16
17
17
18
18
19
19
20
2020
22
22
23
23
21
21
24
2024
Machine Harness Connector And Component Locations
Wire
Number
Wire
Color
Description
Wire
Number
Wire
Color
Description
Power Circuits Accessory Circuits (Continued)
101 RD Bat (+) 578 BU Washer - Aux
103 RD Aux Ckt 590 GY Wiper Sw to Intermittent Module
105 RD Key Sw 592 BU DC/DC Converter Power Output
107 RD Eng Shutdown A513 RD DC/DC Converter Memory Output
108 BU Aux Ckt A571 PU Aux Ckt 1
109 RD Alt Output (+) Term A572 PK Aux Ckt 2
111 RD Aux Ckt A579 OR Wiper Motor (+)
112 PU Main Power Rly Output A586 OR Wiper Sw to Wiper Cont
113 OR Opr Mon Panel B (+) Switched A588 GN Safety Sol Relay to Sol
114 RD Warning Horn (Forward) C537 GN A/C Photo Sensor (+) Sig
115 PK Aux Ckt C538 OR A/C Photo Sensor (-) Sig
118 GY Aux Ckt
Lighting Circuits
120 YL Aux Ckt 607 PK Flood Lamps - Front
123 WH Aux Ckt 615 YL Cab Flood Lamp
124 GN A/C 616 BU Boom Flood Lamp
129 BU Aux Ckt
Control Circuits
140 BU Aux Ckt 763 BU Torque Converter Sw
147 PU Aux Ckt 786 GN Eng Speed Cont
149 PU Aux Ckt 788 YL Eng Speed (+)
150 RD Bat (+) 791 PK Eng Speed Cont
151 GN Aux Ckt A755 PK Throttle Sw #1
152 BU Aux Ckt A756 BU Throttle Sw #2
154 RD Aux Ckt A757 GY Throttle Sw #3
168 RD Aux Ckt A758 BR Throttle Sw #4
172 RD Aux Ckt A761 PU Elec Pump Cont Gov Feedback
177 RD Main Brkr A762 PU Elec Pump Cont Eng Speed Ground
180 GN Aux Ckt A768 BU Pump Control Valve #1 (+)
185 YL Aux Ckt A769 GY Pump Control Valve #2 (-)
189 RD Aux Ckt A770 PK Elec Pump Control Bypass Sw
191 WH Aux Ckt A771 PU Float Sw
Ground Circuits
F771 OR Backup Sw
200 BK Main Chassis F772 WH Backup Sw
201 BK Opr Mon Panel F773 OR Governor Accel
235 BK Elec Pump Ctrl Gnd F774 WH Governor Decel
Basic Machine Circuits
J704 WH Hyd Lock Sol Relay to Grapple and Rotate Sw
301 BU Starter No. 1 Sol J705 WH Rotate CCW Relay to Sol
304 WH Starter Rly No. 1 Output J706 PU Grapple Close Relay to Sol
306 GN Starter Rly Coil J707 YL Grapple Open Relay to Sol
307 OR Key Sw to Neut Start Sw J708 BR Rotate CW Relay to Sol
308 YL Main Power Rly Coil J710 WH Aux Ckt
310 PU Start Aid Sw To Start Aid Sol J711 GN Aux Ckt
311 WH Start Aid Sol To Temp Sw J712 YL Aux Ckt
320 OR Horn Rly Coil to Sw J713 BU Aux Ckt
321 BR Travel Alarm Lamp J714 BR Aux Ckt
322 GY Warning Horn (Forward) J715 OR Aux Ckt
326 PU Key Sw "C" Term J718 WH Aux Ckt
386 PK Air Shutoff Sol Enable J719 BU Aux Ckt
Monitoring Circuits
J720 YL Aux Ckt
403 GN Alternator (R) Term J721 PU Aux Ckt
405 GY Opr Mon Oil Press J722 BR Aux Ckt
412 BU Opr Mon Cool Flow 961 GN Hyd Cont Sw
430 BU Opr Mon Air Filter K904 GN Pump Discharge - Signal
487 OR Hyd Oil Flow Sw K905 RD Pump Discharge - (+) B
491 PK Hyd Oil Temp Sensor K906 GN Swing Brake Sol - Signal
492 GY Coolant Temp Sensor K907 BU Swing Brake Sol - (+) B
495 GN Fuel Level K909 BU Backup Sw - (+) B
496 WH Opr Mon Panel Hyd Oil Level K911 PK E/P Controller - RS485 (+)
C468 BU Engine Oil Level K912 GN E/P Controller - RS485 (-)
Accessory Circuits
K915 GN Fine Swing Sw - E/P Controller
501 GN Wiper - Front K997 BU (+) V Sensor
506 PU Washer - Front L908 OR Controller RS-232C TX
508 PU Radio Speaker - Left L909 BU Controller RS-232C RX
509 WH Radio Speaker - Left (Common) L968 OR Elec Pump Control PS Valve (-)
511 BR Radio Speaker - Right L969 WH Elec Pump Control PS Valve (+)
512 GN Radio Speaker - Right (Common) L970 GY Elec Pump Control to Switch Return
513 OR A/C Compressor/Refrigerant Pressure Sw L971 GN Elec Pump Control to Travel Pressure Sw
519 PK Thermostat to Refrigerant Press Sw L972 BU Low Idle Sw
546 BU Aux Hyd - Rotate CW L973 GN Fine Swing Cont Relay to Sol Valve
547 OR Aux Hyd - Rotate CCW L974 GN Elec Pump Cont Boom Raise Press Sw
548 GY Aux Hyd - Open L975 PK Start Aid Cont Lamp 1 Output
549 PK Aux Hyd - Close L977 YL Trenching Sol
576 PK Wiper - Aux L978 GY Level Finish Sol
Wire Description
Component Location
Component
Schematic
Location
Machine
Location
Component
Schematic
Location
Machine
Location
Actuator - Engine Gov A-9 1 Sensor - Engine Speed B-8 6
Alarm - Travel G-9 2 Sensor - Fuel Level A-5 12
Alternator C-8 3 Sensor - Pump Discharge Press B-8 13
Assembly - Terminal Block F-8 D Sensor - Sun Load F-1 E
Batteries - 12VDC H-8,I-8 4 Solenoid - A/C Clutch C-9 14
Breaker - Alternator I-8 D Solenoid - Eng/Pump Control A-7 15
Breaker - Generator I-8 D Solenoid - Engine Shutdown B-8 6
Breaker - Main I-8 D Solenoid - Fine Swing E-7 16
Control - Engine/Pump F-2 C Solenoid - Grapple E-7 16
Controller - Wiper/Washer E-1 E Solenoid - Hydraulic Lock I-1 F
Converter - Voltage C-5 A Solenoid - Level Finish A-7 15
Diode - Main Relay H-7 D Solenoid - Rotate D-7 16
Fuses I-4,5,6 B Solenoid - Start Aid H-9 17
Generator B-2 F Solenoid - Swing Brake E-7 16
Ground - Cab B-5 5 Solenoid - Travel Speed A-7 15
Ground - Cab E-1 E Solenoid - Trenching A-7 15
Ground - Chassis A-3 6 Switch - Air Cleaner Flow H-9 18
Ground - Chassis A-8 7 Switch - Aux Hydraulic Pressure H-3 B
Ground - Chassis I-8 D Switch - Backup EPR Valve E-5 C
Ground - Platform G-2 F Switch - Backup Governor D-5 C
Ground - Platform H-1 F Switch - Boom Raise Pressure D-7 C
Ground - Relay Panel H-8 D Switch - Coolant Level H-9 17
Ground Strap - Riser to Platform I-6 8 Switch - Disconnect I-8 D
Ground Strap - Chassis to Riser H-1 F Switch - Engine Oil Level B-8 21
Horn A-2 7 Switch - Engine Oil Pressure B-9 19
Lighter E-1 E Switch - Fine Swing Control D-4 C
Meter - Service F-1 E Switch - Grapple Close F-2 C
Monitor F-1 E Switch - Grapple/Magnet E-3 C
Motor - Lower Wiper H-1 24 Switch - Grapple Open I-1 B
Motor - Starter B-8 6 Switch - Horn I-1 B
Motor - Upper Washer I-9 D Switch - Hydraulic Oil Filter A-5 11
Motor - Upper Wiper C-5 9 Switch - Hydraulic Oil Level A-5 11
Radio - 12VDC C-6,I-3 A Switch - Implement Pressure D-7 16
Relay - Boom Lamp I-7 D Switch - Key F-2 C
Relay - Cab/Chassis Lamp I-7 D Switch - Lower Washer D-4 C
Relay - Grapple Close H-6 F Switch - Lower Wiper D-3 C
Relay - Grapple Open H-5 F Switch - Neutral Start Limit I-1 B
Relay - Horn I-7 D Switch - One Touch Low Idle F-2 C
Relay - Hydraulic Lock Solenoid I-7 D Switch - Refrigerant Low Pressure C-9 17
Relay - Main G-7 D Switch - Rotate CCW I-1 B
Relay - Neutral Start F-7 D Switch - Rotate CW F-2 C
Relay - Rotate CCW H-6 F Switch - Start Aid D-5 C
Relay - Rotate CW H-5 F Switch - Start Aid Coolant Temp B-9 10
Relay - Start F-8 D Switch - Suction Line Shutoff Limit A-6 11
Relay - Timer E-7 D Switch - Throttle Position E-3 C
Resistor - Backup I-8 D Switch - Travel Pressure D-7 16
Sender - Coolant Temperature B-9 10 Switch Panel F-2 C
Sender - Hydraulic Oil Temp A-5 11 Unit - A/C, Heater H-5 20
Machine locations are repeated for components located close together.
A = Located in the operator's compartment.
B = Located in operator's left console area.
C = Located in operator's right console area.
D = Located on or near the relay panel.
E = Located in dash area.
F = Located in Cab Riser.
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
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.
-
Resistor, Sender and Solenoid Specifications
Part No. Component Resistance (Ohms)¹
3E-6332 Solenoid: Start Aid 6
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
4I-5394 Sender: Hydraulic Oil Temp 6130 to 7500
102-8017 Resistor: Backup 52.0 ± 2.6
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 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 D-2 C
CONN 35 F-6 C
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.
Related Electrical Service Manuals
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
Title
AK
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
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
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
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-BR-18
AH
311-WH-18
310-PU-18
RISER
CHASSIS
J715-OR
J714-BR
AK
J713-BU
200-BK-18
1
2
3
4
5
6
200-BK-18
200-BK-18
200-BK-18
2
1
J712-YL
6
5
4
3
2
1
J711-GN
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
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
1
2
6
5
4
3
2
1
12
11
L61
L55
AKA
L55
L61
A
AH
321-BR-18
AK
1
2
4
3
J707-YL-18
J706-PU-18
A
AK
AK
AK
AK
A
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-18
548-GY-18
546-BU-18
J721-PU-18
J720-YL-18
J715-OR
L65
549-PK-18
200-BK-18
L970-GY-18
547-OR-18
180-GN
J721-PU-18
J720-YL-18
J715-OR
J722-BR-18
J719-BU-18
J718-WH-18
L64
L63
L63
AT
AU
7
8
11
6
9
10
1
2
3
12
5
4
J715-OR
200-BK-18
546-BU-18
180-GN
L64
200-BK-18200-BK-18
200-BK-18
ROTATE CW
RELAY
111-4871
GRAPPLE OPEN
RELAY
111-4871
GRAPPLE CLOSE
RELAY
111-4871
AK
AT
AS
548-GY-18
J720-YL-18
J721-PU-18
J708-BR-18
J705-WH-18
ROTATE CCW
RELAY
111-4871
RELAY PANEL
J721-PU-18
J707-YL-18
AS
2
1
4
6
5
3
546-BU-18
200-BK-18
J715-OR
J706-PU-18
3
4
1
2
J715-ORJ715-OR
J720-YL-18
548-GY-18
J706-PU-18
J705-WH-18
J715-OR
AK
2
1
4
3
5
6
A
J
2
5
8
11
12
10
9
7
6
4
3
1
AU
MAGNET - GRAPPLE
GRAPPLE/MAGNET SW
146-0238
547-OR-18
549-PK-18
L970-GY-18
180-GN
549-PK-18
547-OR-18
J720-YL-18
J719-BU-18
J721-PU-18
J718-WH-18
J715-OR
J722-BR-18
200-BK-18
180-GN
L970-GY-18
AU
J720-YL-18
J719-BU-18
J721-PU-18
J718-WH-18
J715-OR
J722-BR-18
200-BK-18
L62
L62
L62
L62
L62
L62
L65
L65
200-BK-18
LOWER
WIPER SW
111-4785
LOWER
WASHER SW
111-4786
L65
L65
ATCH GENERATOR
144-4360
L66
L66
B
C
A
+B
GND
GEN SOL
DROP
LIFT
J722-BR-18
J719-BU-18
AT
J718-WH-18
151-GN-10
200-BK-10
AW
AX
L65
D
D
D
D
D
200-BK
K909-BU-18
A588-GN-18
151-GN-18
308-YL-18
307-OR-18
791-PK-18
615-YL
786-GN-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
200-BK-18
12
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
615-YL
791-PK-18
A770-PK-18
149-PU
616-BU
200-BK
200-BK-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
200-BK-18
200-BK-18
200-BK-18
K909-BU-18
6
1
3
5
1
AIR CLEANER SW
109-9330
A768-BU-18
307-OR-18
2
7
A769-GY-18
8
9
4
J
386-PK-18
200-BK
200-BK-18
K909-BU-18
200-BK-18
616-BU
200-BK-18
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
BATTERY
3T-5760
POS
NEGNEG
POS
POS
NEGNEG
POS
ATCH
BATTERY
3T-5760
(NOTE C)
200-BK-18
200-BK-18
L57
AH
AH
J705-WH-18
200-BK-18
J708-BR-18
200-BK-18
2
1
2
1
200-BK-18
J708-BR-18
200-BK-18
J705-WH-18
308-YL-18
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
J706-PU-18
200-BK-18
J707-YL-18
200-BK-18
1
2
4
3
GRAPPLE SOL
3E-9205
200-BK-18
J707-YL-18
200-BK-18
K909-BU-18
A770-PK-18
791-PK-18
615-YL
200-BK-18
151-GN-18
A588-GN-18
J706-PU-18
320-OR-18
786-GN-18
149-PU
616-BU
308-YL-18
308-YL-18
A770-PK-18
K909-BU-18
ROTATE
CW
AH
OPEN
CLOSE
180-GN
200-BK-18
ROTATE
CCW
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
615-YL
791-PK-18
115-PK-18
115-PK-18
786-GN-18
149-PU
320-OR-18
A770-PK-18
5
K909-BU-18
200-BK
K997-BU-18
PUMP DISCHARGE
PRESS SENSOR
106-0178
SIGNAL
GROUNDBK-18
BR-18
YL-18
B
C
B
3
5
AT
3
A
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
L44
AV
5
4
6
3
1
2
D
151-GN-18
5
3
4
6
2
1
7
8
9
10
11
12
506-PU-18
AS
B
CHASSIS
L42
L41
L29
L30
200-BK-18
578-BU-18
4
5
2
200-BK-18
200-BK-18
1
AK
6
3
12
2
1
7
11
8
9
10
AK
B
CHASSIS
L28
L28
L29
L30
L29
L41
L42
L42
L41
C468-BU-18
A588-GN-18
200-BK-18
616-BU
386-PK-18
616-BU
1
2
A572-PK-18
A571-PU-18
AK
306-GN-18
304-WH-8
L975-PK-18
L975-PK-18
L973-GN-18
L977-YL-18
L978-GY-18
L974-GN-18
AS
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
139-3966
L971-GN-18
L970-GY-18
L977-YL-18
L974-GN-18
L969-WH-18
149-PU-18
149-PU-18
149-PU
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
112-PU-10
L971-GN-18
L975-PK-18
AS
L977-YL-18
L974-GN-18
L978-GY-18
L969-WH-18
L968-OR-18
L972-BU-18
519-PK-18
112-PU-10
151-GN-10
GEN BREAKER
6N-9349
30A
AV
AW
AS
495-GN-18
321-BR-18
412-BU-18
306-GN-18
2
151-GN-10
306-GN-18
306-GN-18
151-GN-10
615-YL-18
3
AD
4
1
151-GN-10
NOTE E : REM'D WITH ATCH HEATER OPTION.
487-OR-18
310-PU-18
107-RD
103-RD-18
320-OR-18
AX
151-GN-10
151-GN-10
151-GN-10
200-BK-10
200-BK-10
151-GN-10
L59
L66
L66
AT
H
J
L58
1
4
3
2306-GN-18
L60
L58
L58
6
AG
L58
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
143-7966
GROUND
SIGNAL
+B
C
B
A
177-RD-14
BB
B
ROTATE SOL
127-7487
177-RD-14
177-RD-14
177-RD-14
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
320-OR-18
L58
CONTROL GP
136-1206
L66
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
A770-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
172-RD-18
111-RD-14
147-PU-18
200-BK-18
118-GY
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
200-BK-18
K911-PK-18
K912-GN-18
149-PU
A586-OR-18
K909-BU-18
308-YL-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
308-YL-18
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
D
D
D
103-RD-18
D
8
103-RD-18
508-PU-18
509-WH-18
D
386-PK-18
616-BU
511-BR-18
200-BK-18
306-GN-18
177-RD-8
512-GN-18
118-GY
177-RD-14
177-RD-14
103-RD-18
140-BU
D
177-RD-14
D
105-RD
107-RD
103-RD-18
177-RD-14
177-RD-14
177-RD-14
D
177-RD-14
308-YL-18
F771-OR-18
F772-WH-18
L969-WH-18
L968-OR-18
K915-GN-18
K907-BU-18
177-RD-14
147-PU-18
115-PK-14
200-BK-18
112-PU-6
308-YL-18
177-RD-6
120-YL
191-WH-14
K909-BU-18
307-OR-18
200-BK-18
177-RD-14
112-PU-6
200-BK-18
386-PK-18
386-PK-18
L63
10A
10A
15A
10A
10A
10A
A A
ENG GOV
15A
7
8
1
6
5
4
3
2
PLATFORM
RISER
GROUND STRAP
7G-1060
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
15A
DOME LAMP
KEY SW
BOOM LAMP
FINE SWING
10A
10A
10A
10A
10A
10A
10A
10A
10A
10A
15A
10A
15A
BK
BK
E/P CONT
HYD LOCK SOL
10A
307-OR-18
SHUTDOWN
AUX CKT
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
177-RD-6
506-PU-18
109-RD-6
101-RD-6
101-RD-6
101-RD-6
403-GN-18
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
A771-PU-18
A757-GY-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
A758-BR-18
152-BU
496-WH-18
L57
308-YL-18
L975-PK-18
615-YL
L57
NOTE C : USE WITH COLD WEATHER.
ZZ
200-BK-18
200-BK-18
200-BK-18
200-BK-18
K997-BU-18
L65
AK
AH
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
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-BR-18
C468-BU-18
K907-BU-18
F772-WH-18
F771-OR-18
K915-GN-18
K911-PK-18
K912-GN-18
152-BU
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
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
L7
PLATFORM
A
JOY STICK +B OUT
BK-00
RD-00
RD-00
AK
CHASSIS
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
L15
AK
200-BK-18
200-BK-18
308-YL-18
200-BK-18
K909-BU-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
304-WH-8
200-BK-18
200-BK-18
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
177-RD-8
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
COMPONENTS ARE SHOWN INSTALLED ON A FULLY
OPERABLE MACHINE WITH THE KEY AND ENGINE OFF.
HH
GG
FF
EE
CC
BB
AA
7Y-8132 A-9
116-0242 H-8
116-0080 H-8
116-0162 A-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
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
177-RD-8
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-10
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)
NOTE F : HORIZONTAL MTG LOCATION FOR CASSETTE
326-RD
C468-BU-18
403-GN-18
L8
L8
109-RD-6
L8
L18
200-BK-18
ATCH
START AID
COOLANT TEMP SW
3E-6449
L20
B-
STARTER
MOTOR
6V-5227
6V-0512 (NOTE C)
304-WH-8
B
G
L8
S
MTR BAT
306-GN-18
ENG
SHUTDOWN SOL
3E-7985
200-BK-18
200-BK-18
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
616-BU
200-BK
K
L973-GN-18
L15
L17
K
K
200-BK
200-BK
AE
ANTENNA
CABLE
8R-6111
322-GY
L40
L39
L39
L8
L38
L37
YY
200-BK
147-PU-18
615-YL-18
615-YL-18
L37
L38
322-GY
322-GY
322-GY
AE
200-BK
607-PK
3
1
4
578-BU-18
177-RD-14
L973-GN-18
2
322-GY
L39
200-BK-18
115-PK-14
200-BK-18
172-RD-18
189-RD
B
154-RD-18
150-RD-18
607-PK
K907-BU-18
111-RD-14
K905-RD-14
115-PK-14
114-RD-18
114-RD-18
L21
150-RD-18
189-RD
L20
154-RD-18
L19
111-RD-14
150-RD-18
B
HH
115-PK-14
115-PK-14
150-RD-18
K905-RD-14
154-RD-18
2
189-RD
111-RD-14
AC
4
1
180-GN
168-RD
J
1
2
K909-BU-18
150-RD-18
3
AC
AC
AC
GND
HORN
7T-0970
200-BK
ATCH
BOOM LAMP
5I-8250
607-PK
200-BK
180-GN
CONV (OUT)
K905-RD-14
615-YL-18
10A
200-BK
616-BU
200-BK-18
K909-BU-18
200-BK-18
CHASSIS
LAMP
5I-8251
ATCH
BOOM LAMP
5I-8250
2
1
AU
200-BK-18
AT
AS
AX
AW
HORN
7T-0969
N
(NOTE C)
(NOTE C)
XX
(NOTE C)
MACHINE SHOWN IN THE GRAPPLE MODE.
200-BK-18
WIRES L908-OR & L909-BU TO BE TWISTED AROUND
EACH OTHER AT LEAST 1 TURN PER 25 mm.
200-BK-18
185-YL-18
K909-BU-18
L22
L21
L18
L34
L8
L19
L3
L34
L19
L3
L4
L25
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
L20
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
NOTE D : USE WITH FALLING OBJECT GUARD
DECEL
L27
L26
113-OR-18
615-YL
L27
L26
F771-OR-18
F773-OR-18
F774-WH-18
F772-WH-18
AV
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
K909-BU-18
WW
310-PU-18
2
786-GN-18
615-YL-18
177-RD-14
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
L3
L19
L21
L20
L22
+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
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
320-OR-18
L50
AK
B
B
T~
B
DB
172-RD-18
322-GY
L51
L45
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
109-RD-6
961-BR-18
L30
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
306-GN-18
177-RD-14
3
111-RD-14
189-RD
154-RD-18
154-RD-18
189-RD
2
177-RD-14
111-RD-14
K909-BU-18
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
308-YL-18
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
200-BK-18
BR
A572-PK
A571-PU
180-GN
615-YL
322-GY
306-GN-18
RELAY PANEL
DISCONNECT SW.
7N-0719
ALT BREAKER
9S-0174
1
2
WIPER
W INT
W LOW
PUMP
+B
WASH
GND
GND
H
M
A572-PK
A571-PU
H
326-RD
180-GN
961-BR-18
961-BR-18
549-PK-18
200-BK-14
YY
4
200-BK
J704-WH-18
200-BK-18
UU
548-GY-18
J704-WH-18
326-RD
308-Yl-18
200-BK-18
L10
200-BK-18
615-YL
L54
L970-GY-18
A579-OR
118-GY
VV
BACKUP
RESISTOR
102-8017
HYD LOCK SOL RELAY
111-4871
MAIN RELAY
3T-0376
L54
CAB/CHASSIS LAMP RELAY
111-4871
1
3
2
200-BK-18
548-GY-18
546-BU-18
L63
200-BK-18
200-BK-18
L970-GY-18
549-PK-18
547-OR-18
548-GY-18
546-BU-18
L970-GY-18
SPARE
GY
J704-WH-18
J704-WH-18
547-OR-18
A758-BR-18
118-GY
115-PK-14
111-RD-14
2
60A
1
8
7
5
6
4
3
508-PU-18
HORN RELAY
111-4871
509-WH-18
511-BR-18
J
512-GN-18
546-BU-18
BOOM LAMP RELAY
111-4871
L54
F
DIODE
121-1022
307-OR-18
A757-GY-18
615-YL-18
A756-BU-18
+B
200-BK-18
J
ZZ
576-PK
200-BK-18
200-BK-18
VV
615-YL
120-YL
118-GY
GY
BK
A513-RD-18
OR
A755-PK-18
AT
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
L60
A771-PU-18
L45
152-BU
AD
506-PU-18
L49
AD
ATCH HYD CTL
J
A
MAIN BREAKER
9S-0174
GN
114-RD
549-PK-18
105-RD
A586-OR-18
549-PK-18
549-PK-18
C537-GN-18
HYD OIL FILTER SW
113-OR-18
114-RD
5
114-RD
L7
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
60A
172-RD-18
D
GG
(NOTE C)
168-RD
CC
L48
L47
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
114-RD
RD
BK
SPARE
HORN
SW
GRAPPLE OPEN
OR
MAGNET DROP
ROTATE
CCW
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
RD
J704-WH-18
A513-RD-18
592-BU-18
177-RD-14
+B
COMP
GND
SUN+
SUN-
320-OR-18
BR
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
WW
2
1
OUT 1
+B
IN 2
IN 1
GND
OUT 2
151-GN-18
308-YL-18
ATCH
HEATER UNIT
128-9726
152-BU
519-PK-18
BR
L24
615-YL
114-RD
WH
200-BK-18
J704-WH-18
548-GY-18
200-BK-18
L970-GY-18
L970-GY-18
GY
615-YL
CONV (MEM)
UU
ZZ
308-YL-18
L53
YY
XX
326-RD
200-BK-14
200-BK-18
200-BK
200-BK-18
ROTATE CW
WW
12
1
129-BU
OPERATOR STATION
123-WH-14
108-BU
1
8
114-RD
140-BU
2
10
CONTROL GP
136-1206
6
113-OR-18
113-OR-18
129-BU
607-PK
200-BK-18
103-RD-18
118-GY
A579-OR
11
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
3
152-BU
C
ATCH FAN
548-GY-18
L8
GN
B
200-BK-14
326-RD
108-BU
K911-PK-18
590-GY-18
YL
L6
308-YL-18
403-GN-18
A579-OR
C538-OR-18
C537-GN-18
200-BK-14
201-BK-18
200-BK-18
4
H
L63
H
9
TIMER RELAY
111-4870
7
200-BK-14
6
BU
615-YL
200-BK
615-YL
200-BK
M
N (NOTE D)
M
N (NOTE D)
M
N
M
N
CAB
CAB
LAMP
126-7487
LAMP
126-7487
L909-BU-18
3
2
1
12
11
10
9
8
7
6
5
4
3
2
1
L908-OR-18
235-BK-18
L909-BU-18
L908-OR-18
A
235-BK-18
235-BK-18
L909-BU-18
A
B
C
XX
615-YL
WH
BK
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
J
J
J
YL
5
GROUND
STRAP
GN
L66
547-OR-18
J704-WH-18
546-BU-18
J
103-RD-18
120-YL
NEUTRAL
START RELAY
111-4871
GND
START RELAY
125-1302
1
3
2
BU
4
MOTOR
LOWER
WIPER MOTOR
131-0398
L48
L47
L47
L48
546-BU-18
6
A
154-RD-18
CONV (OUT)
200-BK
OR
576-PK
CONV (MEM)
D
114-RD
200-BK-18
592-BU-18
A513-RD-18
512-GN-18
511-BR-18
509-WH-18
2
1
607-PK
200-BK-18
961-BR-18
322-GY
322-GY
189-RD
172-RD-18
L21
508-PU-18
L20
L5
L11
L12
L59
L7
L6
L6
E
CAB
101-RD-6
J704-WH-18
322-GY
114-RD
J
PLATFORM
120-YL
E
E
+
7
H
H
J704-WH-18
L19
114-RD
114-RD
607-PK
+
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+
+1
-
200-BK
200-BK-18
MOTOR
1
2
6
5
4
GROUND STRAP
8X-5802
NEUTRAL START
LIMIT SW
111-4799
129-BU
L15
L975-PK-18
322-GY
K997-BU-18
326-RD
L21
L19
L3
200-BK
L21
L19
L3
L18
L3
L18
607-PK
ONE TOUCH
LOW IDLE SW
GRAPPLE CLOSE
OR
MAGNET LIFT
L13
L13
L12
L11
L13
L12
L11
L9
E
K997-BU-18
L7
615-YL
K905-RD-18
K905-RD-18
L14
L1
A
A
E
L7
L6
L7
AC
AE
B
2
L1
SW INPUT
K905-RD-18
AK
F
L20
115-PK-14
CHASSIS
OPERATOR STATION
S4
S3
S2
S1
COM
AB
140-0204 F-9
137-7382 D-7
125-4848 B-2
132-1979 H-3
141-6437 D-3
128-7337 G-1
128-7336 E-1
135-6090 F-8
135-6088 A-9
135-6087 A-3
145-9145 D-3
145-9144 F-6
145-9164 G-5
129-8144 G-1 (NOTE D)
135-6086 C-2
130-2211 G-1
138-4282 A-2
132-1973 A-2
121-1044 A-6
108-BU
3
B
322-GY
113-OR-18
607-PK
J704-WH-18
J704-WH-18
A/C & HEATER
UNIT
126-3376
(NOTE E)
235-BK-18
L909-BU-18
4
615-YL
L908-OR-18
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
607-PK
322-GY
-
L2
UU
128-8936 I-8
111-4831 F-8
128-8937 G-7
111-4830 F-8
145-8937 B-2
145-8936 I-8
111-4829 F-8
145-8980 I-8
128-8938 F-8
111-4826 F-8
D
101-RD-6
SERVICE
METER
6T-7337
THROTTLE
POS SW
106-0107
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
L908-OR-18
F
AUX HYD
PRESS SW
106-0181
200-BK
L7
C
L6
THIS SCHEMATIC IS FOR THE 330B MATERIAL HANDLER.
(148-9670)
TO MACHINE STRUCTURE
UNLESS OTHERWISE SPECIFIED ALL WIRE IS 16 GAUGE.
CONN 1
CONN 2
CONN 41
CONN 42
CONN 43
CONN 44
CONN 45
CONN 4CONN 3
CONN 9
CONN 8
CONN 7
CONN 6
CONN 40
CONN 39
CONN 38
CONN 5
CONN 47
CONN 46
CONN 31
CONN 33
CONN 32
CONN 30
CONN 34
CONN 10
CONN 11
CONN 12
CONN 13
CONN 35
CONN 16
CONN 15
CONN 14
CONN 17
CONN 18
CONN 19
CONN 20
CONN 21
CONN 36
CONN 37
CONN 22
CONN 23 CONN 24
CONN 25
CONN 26
CONN 27
CONN 28
CONN 29
E15797
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 SYSTEM CIRCUIT.
WIPER/WASHER CIRCUIT.
HEATER AND AIR CONDITIONER CIRCUIT.
GROUND CIRCUIT.
START AID CIRCUIT.
ENGINE/PUMP CONTROL CIRCUIT.
