Component Locations Part Number
Description
RENR9918-01 November 2007
Machine Schematic Location Location
Accumulator As - Hydraulic (HCR)
225-3394
1
E-1
Accumulator Gp - Hydraulic (Pilot Oil)
164-6981
2
C-8
Block
185-0488
3
D-5
Block
201-9379
4
D-7
Connector
257-2980
5
F-1
Control Gp - Joystick (LH)
259-7763
6
C-4
Control Gp - Joystick (RH)
FLUID POWER SYMBOLS BASIC COMPONENT SYMBOLS
MAIN AUX.
PUMP or MOTOR
AA
259-7762
7
C-3
Cylinder - Boom
Note A
8
F-5
Cylinder - Grapple
Note A
9
D-3
Cylinder - Hydraulic Cab Riser
Note A
10
F-2
Cylinder - Stick
Note A
11
F-3 , F-4
Filter & Valve Gp - Pilot (Hydraulic)
158-8987
12
A-6
Filter Gp - Oil (Case Drain)
289-8194
13
A-6
Filter Gp - Oil (Hydraulic Generator)
289-8194
14
B-6
Filter Gp - Oil (Hydraulic Return)
188-4140
15
B-7
Generator Gp - Hydraulic (Attachment)
273-6546
16
D-4
Manifold Gp - Control (Pilot Oil)
215-5037
17
B-7
Motor Gp - Fan
242-6776
18
A-8
Motor Gp - Swing
266-7922
19
F-8
Motor Gp - Travel (Left)
271-6376
20
F-7
Motor Gp - Travel (Right)
271-6376
21
F-6
Pump Gp - (Auxiliary) (Grapple & Generator)
274-7930
22
C-6
Pump Gp - Piston (Hydraulic Fan)
259-0815
23
B-6
Pump Gp - Piston (Main)
283-6116
24
C-6
BB
15
CC
TWO POSITION
HYDRAULIC PNEUMATIC ENERGY TRIANGLES
ATTACHMENT
LINE RESTRICTION VARIABLE and PRESSURE COMPENSATED
VALVE PORTS
TWO-WAY
THREE POSITION
PUMP: VARIABLE and PRESSURE COMPENSATED
2-SECTION PUMP
VALVES
VALVE ENVELOPES
ONE POSITION
LINE RESTRICTION (FIXED)
RESTRICTION
PRESSURE COMPENSATION
LINE RESTRICTION (VARIABLE)
SPRING (ADJUSTABLE)
VARIABILITY
CONTROL VALVES
SPRING
FLUID CONDITIONER
FOUR-WAY
THREE-WAY
CONTROL VALVES
CHECK VALVES
AB
AB
SOS P T SHIFTED POSITION
P T NORMAL POSITION
167-3466
25
B-5
Switch As - Pressure (Generator Pump)
131-9203
26
D-4
Swivel Gp
234-4440
27
E-7
Valve - Shutoff (Cab Manual Lowering)
232-7226
28
F-2
Valve As - Check (HCR)
257-2891
29
E-2
Valve Gp - (Stop Valve, Stick In & Boom Up) (Attachment)
255-7879
30
A-5
Valve Gp - Check (Oil Cooler Bypass) (RCV)
190-7745
31
B-8
Valve Gp - Control (Hydraulic Cab Riser, Rotator) (MPV)
285-1745
32
E-1
Valve Gp - Control (Reverse Flow)
234-4624
33
A-8
Valve Gp - Flow Control (Boom Cylinder Decompression) (GFRV)
168-0712
34
D-3
Valve Gp - Load Control (Boom Lowering, Drift Reduction, Relief) (LT) (RT)
263-1962
35
F-5 , F-4
Valve Gp - Load Control (Hydraulic Cab Riser Lowering) (LCV)
185-1247
36
E-1
Valve Gp - Load Control (Stick Lowering Control) (LT) (RT)
202-9264
37
F-4 , F-3
Valve Gp - Main Control
310-0235
38
D-5
Valve Gp - Manual (Boom Lower)
270-5692
39
F-5
Valve Gp - Pilot (Travel)
270-5947
40
B-5
Valve Gp - Pressure Reducing (Boom, Swing Priority)
232-4102
41
C-7
Valve Gp - Pressure Reducing (HCR Speed Reduction Valve)
257-2892
42
D-1
Valve Gp - Relief (Line)
255-5661
43
D-6
Valve Gp - Shutoff (Cab Manual Lowering)
226-9860
44
F-1
Valve Gp - Shuttle
185-0462
45
B-4
Valve Gp - Shuttle (Swing Pilot)
259-7732
46
C-8
Valve Gp - Solenoid (Heavy Lift)
121-6303
47
C-7
Valve Gp - Solenoid (Negative Flow Control, Proportional Reducing Valve)
171-0188
48
C-5
Valve Gp - Solenoid (Reversing Fan)
242-6880
49
A-7
Valve Gp - Solenoid (Work Tool, 4-Function)
259-7429
50
D-1
Valve Gp - Swing Cushion (Fine Swing)
158-9090
51
F-8
Valve Gp - Travel Counterbalance (Left)
204-2819
52
E-7
Valve Gp - Travel Counterbalance (Right)
204-2819
53
E-6
SHUTTLE
SPRING LOADED
BASIC SYMBOL
PILOT CONTROLLED
FLUID STORAGE RESERVOIRS
DD
Switch As - Pressure (Action Input, Fore Boom)
INFINITE POSITION
VENTED
330D Material Handler Hydraulic System
12
RETURN ABOVE FLUID LEVEL
PRESSURIZED
RETURN BELOW FLUID LEVEL
MEASUREMENT
PRESSURE
ROTATING SHAFTS
FLOW
TEMPERATURE
UNIDIRECTIONAL
BIDIRECTIONAL
COMBINATION CONTROLS
C5K1-UP SOLENOID or MANUAL
SOLENOID
SERVO
SOLENOID and PILOT or MANUAL
SOLENOID and PILOT
DETENT
THERMAL
MANUAL CONTROL SYMBOLS
PUSH-PULL LEVER
MANUAL SHUTOFF
GENERAL MANUAL
PILOT CONTROL SYMBOLS
RELEASED PRESSURE
EXTERNAL RETURN
INTERNAL RETURN
SPRING LOADED
24
LINES CROSSING
HYDRAULIC PUMPS
FIXED DISPLACEMENT
HYDRAULIC AND PNEUMATIC CYLINDERS
LINES JOINING
VARIABLE DISPLACEMENT NON-COMPENSATED
UNIDIRECTIONAL
UNIDIRECTIONAL
BIDIRECTIONAL
BIDIRECTIONAL
INTERNAL SUPPLY PRESSURE
COMPLETE
SINGLE ACTING
DOUBLE ACTING
INTERNAL PASSAGEWAYS
HYDRAULIC MOTORS
VARIABLE DISPLACEMENT NON-COMPENSATED
SPRING
REMOTE SUPPLY PRESSURE
CROSSING AND JOINING LINES
GAS CHARGED
FIXED DISPLACEMENT
PEDAL
SIMPLIFIED
ACCUMULATORS
23
PUSH BUTTON
FLOW IN ONE DIRECTION
TWO POSITION
THREE POSITION
INFINITE POSITIONING
PARALLEL FLOW
CROSS FLOW
FLOW ALLOWED IN EITHER DIRECTION
With Hydraulic Cab Riser
MAIN PUMP & PILOT FILTER
Printed in U.S.A.
© 2007 Caterpillar All Rights Reserved
1 31
Electrical Symbols Table
25
32 28 36
5
Hydraulic Symbols (Electrical)
45
6
7 G
25 40 3
44
4
30 38
23
11
24
50
38
Transducer (Fluid)
Transducer (Gas / Air)
M
Generator
Electric Motor
37
8 35
Pressure Switch (Adjustable)
Pressure Switch
41 43
Electrical Wire
Temperature Switch
EE
46 47
Electrical Symbols (Electrical)
39
22 23
22
24
FF
8 35
T
Temperature Symbol
Pressure Symbol
Level Symbol
Flow Symbol
GG 25 34
21
42 48
53
50
12
2
19
27
Wire Number Identification Codes
14
13 17 51
16
15 49
26
Electrical Schematic Example
HH
4
1
10
5
12 13
38 41
29
36
39
15 31
43 46
32
Current Standard
Current Standard Harness identification code This example indicates wire 135 in harness "AG".
Wire Circuit Number Identification
17 3
Hydraulic Schematic Example
Wire Color
325-AG135 PK-14 325-PK Circuit Identification Number
14
6
16 26
7
Wire Color
Wire Gauge
Previous Standard
VIEW OF THE PUMP COMPARTMENT
Wire Color
Wire
325-PK-14
18 22
B
25 40
23 24
Circuit Number Identification
44
33
VALVE GP - 4 FUNCTION WORK TOOL
25 34 42 48 50
Tap Locations Pressure, Sampling, and Sensor
2 20 21 52 53
17 30
28
19 27 51
8 35
25 45
11 37
47 49
Tap Number
Schematic Location
AA
Drive Pump Delivery Pressure
B-8
BB
Power Shift Pressure
B-8
CC
Idler Pump Delivery Pressure
B-3
DD
Pilot Pressure
A-3
EE
Grapple Rotate CW Pressure
B-2
FF
Grapple Rotate CCW Pressure
A-2
GG
Hydraulic Cab Riser Up Pressure
A-4
HH
Hydraulic Cab Riser Down Pressure
B-2
Hydraulic Oil Sampling Port
A-4
SOS
MACHINE COMPONENT LOCATIONS
Description
A
Wire Gauge (EXAMPLE VALVE)
(Dimensions: 39 inches x 28 inches)
33 52
10
30 Page,
29
RENR9918-01
18 20