Actuator - Water Valve
B-7
1
Alarm - Action
B-10
Block - Fuse
Schematic Location
Machine Location
Resistor - Green Lamp
G-15
36
2
Resistor - IAC Override
C-4
37
CONN 8
I-11
3
Resistor - Red Lamp
G-15
38
35
Compressor - Air Seat
G-12
4
Sensor - A/C Compressor Discharge Pressure
B-7
39
Control - Brake Pedal
B-10
7
Sensor - A/C Compressor Suction Pressure
B-7
40
Control - Chassis 1
J-7
8
Sensor - Cab Air Temp
B-7
41
36
Control - Chassis 2
H-7
9
Sensor - Cab Vent Air Temp
A-7
42
Control - Key Reader
C-16
10
Sensor - Evap Coil Temp
B-7
43
32
Control - Payload
F-13
11
Sensor - Throttle 1
C-10
44
38
CONN 4 CONN 2
Control - Shift Hoist Lever (Ejector)
D-16
12
Socket - Power 12V
B-10
45
15
Control - Telematics
F-3
13
Solenoid - MSS Exciter Coil 1
E-16
46
Control - XMSN 1
J-7
14
Switch - Air Cond Operator
H-16
47
30
Control - XMSN 2
H-7
15
Switch - Assisted Hoist Enable
C-16
48
14
CONN 18
Converter - 24V-12V (10A)
F-13
16
Switch - Door
D-16
49
Converter - 24V-12V (15A) (Seat)
F-13
17
Switch - DPF Regen Force
J-16
50
Diode - Door Switch
H-9
18
Switch - Economy Mode
I-16
51
37
Diode - Key Switch
H-9
19
Switch - Front Work Light
E-16
52
Diode - Key Switch (Wake Up)
G-9
20
Switch - Hazard Light
D-16
53
Display - Indication
D-10
21
Switch - Headlights
F-16
54
34
Display - Secondary
B-13
22
Switch - Heated Mirror
H-16
55
CONN 7
Flasher
F-16
23
Switch - Hood
F-16
56
Ground - ECM and Fuse
G-9
24
Switch - Horn
B-16
57
20
17
Ground - Headliner Switch
J-13
25
Switch - Key Start
D-16
58
Ground - RH Console
F-16
26
Switch - LH Rear View Mirror
I-16
59
23
16
CONN 5 CONN 3 CONN 1
Motor - Blower As
B-7
27
Switch - R Access Platform Light
E-16
60
Motor - Front Washer
B-8
28
Switch - Rear Wiper Control
G-16
61
19
Motor - Front Wiper
C-16
29
Switch - Retarder Lever
B-16
62
11
Motor - LH Rear Wiper
G-15
30
Switch - RH Rear View Mirror
J-16
63
A-8
31
Switch - Seat Belt
G-12
64
Motor - RH Rear Wiper
G-15
32
Switch - Secondary Steering
H-16
65
Panel - HVAC 1
G-16
33
Switch - Tertiary Brake
C-16
66
18 CONN 6
25
9
Relay - Key Switch
H-11
34
Switch - Wash/Wiper/Turn
B-16
67
Resistor - CAN 2 Term A
G-16
35
Switch - Washer Fluid Level
A-8
68
Motor - Rear Washer
13
24
8
Component
730, 730 Ejector and 735 Articulated Truck Electrical System 730: 3F31-455
730 Ejector: 3F41-245
735: 3F51-265
Volume 1 of 3: Cab PUBLICATIONS.CAT.COM
CAB - TOP VIEW
CAB - REAR VIEW
Connector Location - Volume 1 CONN 1
Schematic Location E-15, D-2
CONN 2
E-15, E-2
CONN 3
D-15
CONN 4
C-15
CONN 5
J-13
CONN 6
G-13
CONN 7
E-13
CONN 8
D-13
CONN 9 - ET
G-9
CONN 10
A-9
CONN 11
B-5
CONN 14
H-4
CONN 15
F-4
CONN 16
E-4
CONN 17
J-2
CONN 18
E-2
CONN 19
D-4
Connector Number
29
Harness And Wire Electrical Schematic Symbols Symbols
T
Pressure Symbol
Level Symbol
Flow Symbol
Fuse: A component in an electrical circuit that will open the circuit if too much current flows through it. Switch (Normally Open): A switch that will close at a specified point (temp, press, etc.). The circle indicates that the component has screw terminals and a wire can be disconnected from it. Switch (Normally Closed): A switch that will open at a specified point (temp, press, etc.). No circle indicates that the wire cannot be disconnected from the component. Ground (Wired): This indicates that the component is connected to a grounded wire. The grounded wire is fastened to the machine. Ground (Case): This indicates that the component does not have a wire connected to ground. It is grounded by being fastened to the machine. 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.
T
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. Magnetic Latch Solenoid: A magnetic latch solenoid is an electrical component that is activated by electricity and held latched 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.
2
Harness and Wire Symbols
CONN 9
Wire, Cable, or Harness Assembly Identification: Includes Harness Identification Letters and Harness Connector Serialization Codes (see sample).
Harness Identification Letter(s): (A, B, C, ..., AA, AB, AC, ...)
L-C12 3E-5179
AG-C4 111-7898
CONN 10
68
28
31
42 27
1
CAB - RIGHT SIDE VIEW
33
47
51
50
59
63
55
65
61
22 21
26
12
62 67
57
58
46
45 54 60 52
56
49 64 7 10 4
44
CAB - LEFT SIDE VIEW
CAB - INTERIOR REAR VIEW
Receptacle Pin or Socket Number
1 2
Deutsch connector: Typical representation of a Deutsch connector. The plug contains all sockets and the receptacle contains all pins.
1 2
Sure-Seal connector: Typical representation of a Sure-Seal connector. The plug and receptacle contain both pins and sockets.
Fuse (5 Amps)
9X-1123
Component Part Number
325-AG135 PK-14 Harness identification code: This example indicates wire group 325, wire 135 in harness "AG".
Wire Gauge* Wire Color
*Wire gauge is shown in AWG (American Wire Gauge) but could also be shown in metric denoted with mm
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CAB - FRONT VIEW
43
Part Number: for Connector Receptacle
5A Plug
40
41
Harness Connector Serialization Code: The "C" stands for "Connector" and the number indicates which connector in the harness (C1, C2, C3, ...).
2
39
CONN 11
L-C12 3E-5179
1
Part Number: for Connector Plug
CONN 16 CONN 19 CONN 14 CONN 17 CONN 15
Circuit Breaker Symbol
Symbols and Definitions
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.
3
Temperature Symbol
66
48
53
42 Page,
Machine Location
UENR4181-02 VOL 1 of 3
Schematic Location
Component
(Dimensions: 56 inches x 35 inches)
UENR4181-02 June 2021
Component Location - Volume 1