Component Locations Component Locations RENR6718-01 FLUID POWER SYMBOLS

Part Machine Schematic Part Machine Schematic November, 2006

Description Description BASIC COMPONENT SYMBOLS
Number Location Location Number Location Location
Brake Circuit Fan Circiut
Accumulator Gp - Parking Brk. 163-5632 1 F-6 Fan Drive Motor 240-6746 60 E-8 Test Points on Panel PUMP or MOTOR FLUID CONDITIONER SPRING CONTROL VALVES RESTRICTION LINE RESTRICTION
(FIXED)
MAIN AUX.

2-SECTION PUMP
PUMP: VARIABLE and
PRESSURE COMPENSATED

Accumulator Gp - Service Brk. 236-7794 2 D-7 Pump Circiut

Position
Brake Gp (SVC)
Element As. - Return Flow
169-7596
132-8876
3
4
B-2, B-8
A-4
Pump Gp - Fan / Brakes / Ejector 240-2647
Pump Gp - Secondary Steer 253-8095
70
71
C-6
C-4
730 EJECTOR Color Code VARIABILITY SPRING LINE RESTRICTION PRESSURE HYDRAULIC PNEUMATIC LINE RESTRICTION ATTACHMENT
(ADJUSTABLE) (VARIABLE) COMPENSATION ENERGY TRIANGLES VARIABLE and PRESSURE
COMPENSATED
Manifold - Brake Switches 230-3008 5 D-8 Pump Gp - Steer / Ejector 240-2647 72 B-5 A Ejector System Redish Brown VALVES
Manifold (Calipers) 7U-9277 6 B-2, B-8 Steering Circiut VALVE ENVELOPES VALVE PORTS
B Steering System Yellow
Parking Brake Gp 160-8009 7 F-7 Cylinder Gp - Steer RH: 273-3266 C-2
LH:
80 C Ejector System Pilot Pressure Orange
Switch As. - Parking Brake 213-6947 8 F-6 273-3267 C-2
Switch As. - Low Brake Press. 3E-7688 9 E-6 Pump Gp - HMU 223-7718 81 D-3
D Front Brake Pressure Red ONE POSITION TWO POSITION THREE POSITION TWO-WAY THREE-WAY FOUR-WAY

Switch Gp - Stop Light 172-7071 10 D-8 Switch As. - Steer Pressure 3E-6450 82 D-5 E Piston Pump Steering and Ejector Light Green CONTROL VALVES CHECK VALVES
AB AB
Switch Gp - Transmission Signal 172-7071 11 D-8 Valve Gp - Relief 268-5823 83 D-2, D-2 F Fan Drive System Dark Green
Valve Gp 224-3207 12 Valve Gp - Tank Line Check 145-8983 84 B-4 G Brake Charging Light Blue P T P T
BASIC SPRING SHUTTLE PILOT
Ejector Circuit Suspension Circuit NORMAL POSITION SHIFTED POSITION INFINITE POSITION
H Parking Brake System Differentials Dark Blue SYMBOL LOADED CONTROLLED
Accumulator Gp - Tailgate 163-5632 20 F-1 Cylinder Gp - Front 200-4300 90 C-3, F-3 MEASUREMENT ROTATING SHAFTS
J Output Transfer Gear Gray
Cylinder Gp - Ejector 270-4484 21 F-2
K Piston Pump Brake, Ejector and Fan White
Cylinder Gp - Tailgate 203-7847 22 D-1
Drain - Body-Ecology 8J-8782 23 A-5 PRESSURE TEMPERATURE FLOW UNIDIRECTIONAL BIDIRECTIONAL
Port - Scheduled Oil Sampling 8C-3446 24 B-4
FLUID STORAGE RESERVOIRS

730 Ejector Articulated Truck

Screen 6E-5066 25 F-6,E-5,D-5
Screen As. 6J-3795 26 A-4
Screen As. - Pump Case Drain 119-4885 27 A-6

Hydraulic System
VENTED PRESSURIZED RETURN ABOVE FLUID LEVEL RETURN BELOW FLUID LEVEL
Switch As. 117-7773 28 B-4
Tank Gp - Hydraulic 253-9239 29 A-4 to A-6 COMBINATION CONTROLS
Valve Gp 240-0678 30 D-4 to F-6
Valve Gp - Breaker/ Relief 160-5615 31 B-5, B-5 B1W1-UP
SOLENOID SOLENOID SOLENOID SOLENOID and SERVO THERMAL DETENT
Valve Gp - Check 158-9956 32 F-5 or MANUAL and PILOT PILOT or MANUAL
Valve Gp - Check 252-6485 33 E-5
MANUAL CONTROL SYMBOLS
Valve Gp - Check 128-2780 34 D-5
Valve Gp - Check 194-1723 35 D-5
Valve Gp - Check 239-0617 36 D-5,D-5
PUSH-PULL LEVER MANUAL SHUTOFF GENERAL MANUAL PUSH BUTTON PEDAL SPRING
Valve Gp - Check 195-9088 37 E-2
Valve Gp - Diverter 239-0594 38 D-5 PILOT CONTROL SYMBOLS
RELEASED PRESSURE REMOTE SUPPLY PRESSURE
Valve Gp - Diverter 239-0603 39 E-6
Valve Gp - Diverter 239-0605 40 D-5
Valve Gp - Diverter 239-0621 41 E-5 EXTERNAL RETURN INTERNAL RETURN SIMPLIFIED COMPLETE INTERNAL
SUPPLY PRESSURE
Valve Gp - Ejector 260-0286 42 E-3
Valve Gp - Ejector Contr. Mnfld 251-5765 43 F-2 ACCUMULATORS CROSSING AND JOINING LINES HYDRAULIC AND PNEUMATIC CYLINDERS
Valve Gp - Flow Control 215-9101 44 E-2
Valve Gp - Inverse Check 257-8414 45 F-5 SPRING LOADED GAS CHARGED LINES CROSSING LINES JOINING SINGLE ACTING DOUBLE ACTING

Valve Gp - Load Control 208-1475 46 E-2

HYDRAULIC PUMPS HYDRAULIC MOTORS INTERNAL PASSAGEWAYS
Valve Gp - Pressure Reducing 239-0615 47 E-5
Valve Gp - Relief 239-0612 48 E-5 FIXED VARIABLE DISPLACEMENT FIXED VARIABLE DISPLACEMENT INFINITE THREE TWO
DISPLACEMENT NON-COMPENSATED DISPLACEMENT NON-COMPENSATED POSITIONING POSITION
Valve Gp - Relief 239-0614 49 F-5 POSITION

Valve Gp - Relief 252-5121 50 E-3, E-3

Valve Gp - Sequence 255-3591 51 F-2
TEST PANEL UNIDIRECTIONAL UNIDIRECTIONAL

FLOW IN ONE PARALLEL CROSS FLOW ALLOWED IN

BIDIRECTIONAL
Valve Gp - Shuttle 239-0618 52 E-6,D-5,D-5 LOC. REAR LEFT SIDE of FRONT CHASSIS BIDIRECTIONAL DIRECTION FLOW FLOW EITHER DIRECTION

Valve Gp - Sol 201-0950 53 F-6

Valve Gp - Sol 191-7785 54 E-5 MACHINES 1 to 262 ONLY
Valve Gp - Sol 257-0267 55 E-3, E-3 © 2006 Caterpillar Printed in U.S.A.
All Rights Reserved

A B C D E Electrical Symbols Table

4 23 24 26 27
Tap Locations Hydraulic Symbols (Electrical)
3 F G H J K 80 83 3 6 90 28 29 31 71 84 70 71 Pressure and Sampling
Tap Schematic
Number
Description
Location G M
A Ejector Raise And Lower Press D-4
B Steer Pressure D-4 D Transducer
(Fluid)
Transducer
(Gas / Air)
Generator Electric Motor
C Ejector Pilot Pressure E-4

(Dimensions: 39 inches x 28 inches)

D Front Brake Pressure C-8
E Steer And Ejector Pump Press. D-5
F Fan Drive Pressure E-6
G Brake Accum. Charge Press. F-6

RENR6718-01
H Park Brake Pressure D-5 Located at ride side of engine, just in front of cab Pressure Switch Pressure Switch Temperature Switch Electrical Wire
K Fan And Brake Pump Pressure C-5 (Adjustable)
81 SOS Scheduled Oil Sampling B-4
T Pump Case Fill B-5, C-5
N Rear Brake Pressure B-3 Electrical Symbols (Electrical)
5 8
10 11 E Pressure Temperature
T

Level Flow
Symbol Symbol Symbol Symbol
12 82 H A
Wire Number Identification Codes

Electrical Schematic Example Hydraulic Schematic Example

3 N 42 49 55 80 83 60 3 6 90 8 9 25 30 32 33 34
Current Standard Current Standard
35 36 39 40 41 47 48 located on the top, right side of the main control valve (29) at the back Harness identification code
This example indicates

30 Page,
wire 135 in harness "AG". Wire

49 52 53 54 82 84
Circuit Number Wire Color
Identification
Located on the back, left side of the main control valve (29)
K 325-AG135 PK-14
325-PK
21 37 43 44 60 1 2 5 8 10 11 12 82 Circuit Identification
Number
Wire Color Wire Gauge

46 51 Previous Standard
Wire Color
Wire
F
B 325-PK-14
B A
Circuit Number Wire Gauge
Identification (EXAMPLE VALVE)
locate at the bottom, ride side of the main control valve (29) at the back

Located on the front, left side of the main control valve (29)

C
G N

Located on the top, right side of the Test port for Service Brakes
22 3 7 N 80 83 90 3 6 4 23 24 26 27 70 71 main control valve, near the middle
Located on the bottom, righte side of the main control valve (29) at the middle

28 29 31 84
TAP LOCATIONS
COMPONENT LOCATIONS MACHINES 263 and UP
 8 7 6 5 4 3 2 1

CYLINDER GP
EJECTOR
270-4484
VALVE GP VALVE GP
SCREEN SOL INVERSE CHECK
6E-5066 201-0950
ACCUMULATOR GP 201-0950 VALVE GP
PARKING BRAKE GP EJECT
PARKING BRAKE 240-0678
160-8009
163-5632 PB FB RB
F CYLINDER GP F
H TPM FRONT SUSPENSION
VALVE GP ACCUMULATOR GP
RELIEF 200-4300
EJECT (A) TAILGATE
239-0614 163-5632
T2 RETRACT (B) E2 R2 ACC
SW1 E1
SWITCH AS. VALVE GP TGR
PARKING BRAKE DIVERTER R1
213-6947 239-0621
ACC VALVE GP
TGH
T1 SOL
SWITCH AS. 257-0267 VALVE GP
VALVE GP SEQUENCE
LOW BRAKE PRESS. VALVE GP
CHECK VALVE GP 255-3591
266-6477 LOAD CONTROL
158-9956 RELIEF
SW2 252-5121 208-1475
VALVE GP
CHECK
252-6485 VALVE GP
EJECTOR VALVE VALVE GP
G
TPBR 260-0286 CHECK
VALVE GP VALVE GP 195-9088
DIVERTER RELIEF
239-0603 239-0612 VALVE GP
VALVE GP T
SCREEN RELIEF SOL
E 6E-5066 VALVE GP 252-5121 257-0267 VALVE GP
F E
PRESS. REDUCING EJECTOR CONTROL MANIFOLD
VALVE GP
239-0615 251-5765
FAN DRIVE MOTOR TPJ FLOW CONTROL
240-6746 VALVE GP C 215-9101
SHUTTLE VALVE GP
F 239-0618 J
TPH SOL
191-7785 H
CYLINDER GP
VALVE GP LS RH: 273-3266
PUMP GP-HMU
CHECK LH: 273-3267
DYNAMIC LOAD SENSING
128-2780 223-7718

OPEN
VALVE GP
SWITCH GP DIVERTER A
PRESSURE 239-0605 TPA
STOP LIGHT
172-7071 VALVE GP
SHUTTLE CYLINDER GP
239-0618 R VALVE GP TAIL GATE
T
RELIEF 203-7847
VALVE GP LSST 268-5823
MANIFOLD SHUTTLE LS
230-3008 239-0618
VALVE GP SCREEN ST
ACCUMULATOR GP
D 6E-5066 D
224-3207 SERVICE BRAKES
236-7794 B
TPST

VALVE GP
SWITCH GP
CHECK VALVE GP P
PRESSURE CYLINDER GP
239-0617 CHECK
TRANSMISSION SIGNAL VALVE GP L RH: 273-3266
172-7071 194-1723
DVTR LH: 273-3267
239-0594 VALVE GP
CHECK HYDRAULIC CIRCUIT COLOR DESCRIPTIONS
LS1 P1 TPD LS2 P2 TPG SW3 P3 LS3 239-0617 BRAKE, EJECTOR, AND FAN PUMP OUTPUT
PRIMARY STEERING PUMP OUTPUT
P1
(Dimensions: 39 inches x 28 inches)

B1 FAN CONTROL CIRCUIT

D EJECTOR CONTROL CIRCUIT
T1 SUPPLY LINE
K E DRAIN / RETURN LINE
SWITCH AS. STEERING CONTROL CIRCUIT
P SECONDARY STEERING PUMP OUTPUT
STEER PRESS.
PARKING BRAKES CONTROL CIRCUIT
3E-6450 SERVICE BRAKES CONTROL CIRCUIT
SUSPENSION CYLINDERS AND CIRCUIT

P2 PUMP GP
RENR6718-01

B2 FAN/BRAKES/
T2 EJECTOR
240-2647 X A
C C
PUMP GP
SEC. STEERING
253-8095
T M
T
A B C D E

CYLINDER GP
F G H J K
FRONT SUSPENSION
P
200-4300
PUMP GP
STEER/EJECTOR
240-2647
REMOTE DIAGNOSTIC AND TEST PORT LOCATIONS
30 Page, Color 2,

BRAKE GP
FOR MACHINES 1 TO 262
A SVC
X
169-7596

BRAKE GP
SVC T VALVE GP-CHECK
169-7596 T STEERING TANK LINE
145-8983
B B
SOS
VALVE GP VALVE GP
BREAKER/RELIEF BREAKER/RELIEF
160-5615 160-5615
N

SWITCH AS. MANIFOLD

117-7773 7U-9277

TRACTOR TRAILER
MANIFOLD TRAILER
7U-9277
TANK GP
FRONT AXLE HYDRAULIC
253-9239 LINE PATTERNS
BRAKE CALIPERS Pressure Line

Pilot / Load Sensing Pressure

Drain / Return Lines

Component Group

Attachment
SCREEN AS. ELEMENT AS. A
119-4885 HITCH C.L. BRAKE GP Air Line
132-8876 SVC
A
BRAKE GP CALLOUTS
SCREEN AS. 169-7596
SVC
6J-3795 YY Taps (Pressure, Sampling,Sensor) by letter
169-7596
52 Components by number
BODY-ECOLOGY DRAIN
8J-8782 THIS SCHEMATIC IS FOR THE 730 EJECTOR ARTICULATED TRUCK
HYDRAULIC SYSTEM
MEDIA #: RENR6718-01
PART #: 251-5763 CHNG O4
Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations

8 7 6 5 4 3 2 1