RENR9919-00
30 Page
ONE POSITION
TWO POSITION
THREE POSITION
VENTED
PRESSURIZED
RETURN ABOVE FLUID LEVEL
RETURN BELOW FLUID LEVEL
LINES CROSSING
LINES JOINING
TWO-WAY
THREE-WAY
FOUR-WAY
SPRING
CONTROL VALVES
RESTRICTION
LINE RESTRICTION
(FIXED)
2-SECTION PUMP
MAIN
AUX.
SPRING
(ADJUSTABLE)
VARIABILITY
LINE RESTRICTION
(VARIABLE)
LINE RESTRICTION
VARIABLE and PRESSURE
COMPENSATED
PRESSURE
COMPENSATION
PUMP: VARIABLE and
PRESSURE COMPENSATED
ENERGY TRIANGLES
HYDRAULIC PNEUMATIC
MEASUREMENT
PRESSURE
TEMPERATURE
FLOW
ROTATING SHAFTS
UNIDIRECTIONAL BIDIRECTIONAL
PUSH-PULL LEVER PEDALGENERAL MANUAL PUSH BUTTON SPRING
MANUAL CONTROL SYMBOLS
HYDRAULIC MOTORS
FIXED
DISPLACEMENT
VARIABLE DISPLACEMENT
NON-COMPENSATED
UNIDIRECTIONAL
BIDIRECTIONAL
HYDRAULIC PUMPS
FLUID STORAGE RESERVOIRS
CROSSING AND JOINING LINES
VALVE ENVELOPES
VALVE PORTS
BASIC COMPONENT SYMBOLS
FLUID CONDITIONER
PUMP or MOTOR
FLUID POWER SYMBOLS
FIXED
DISPLACEMENT
VARIABLE DISPLACEMENT
NON-COMPENSATED
UNIDIRECTIONAL
BIDIRECTIONAL
VALVES
PILOT CONTROL SYMBOLS
RELEASED PRESSURE
EXTERNAL RETURN
INTERNAL RETURN
REMOTE SUPPLY PRESSURE
SIMPLIFIED
COMPLETE
INTERNAL
SUPPLY PRESSURE
ACCUMULATORS
SPRING LOADED
GAS CHARGED
SOLENOID
or MANUAL
SOLENOID
and PILOT
SOLENOID and
PILOT or MANUAL
COMBINATION CONTROLS
SOLENOID
SERVO
THERMAL
DETENT
HYDRAULIC AND PNEUMATIC CYLINDERS
DOUBLE ACTING
SINGLE ACTING
BASIC
SYMBOL
SPRING
LOADED
CHECK VALVES
TWO
POSITION
INFINITE
POSITIONING
FLOW IN ONE
DIRECTION
FLOW ALLOWED IN
EITHER DIRECTION
THREE
POSITION
CROSS
FLOW
PARALLEL
FLOW
INTERNAL PASSAGEWAYS
NORMAL POSITION
A B
P T
A B
P T
SHIFTED POSITION
INFINITE POSITION
CONTROL VALVES
ATTACHMENT
MANUAL SHUTOFF
SHUTTLE PILOT
CONTROLLED
Hydraulic Symbols (Electrical)
Electrical Symbols Table
325-AG135 PK-14
Circuit Identification
Number
Wire Color
Wire Gauge
Harness identification code
This example indicates
wire 135 in harness "AG".
325-PK-14
Wire Gauge
Wire Color
Circuit Number
Identification
Wire Number Identification Codes
Current Standard
Previous Standard
Electrical Schematic Example
Hydraulic Schematic Example
325-PK
Wire Color
Circuit Number
Identification
B
A
Wire
Wire
(EXAMPLE VALVE)
Current Standard
Transducer
(Fluid)
Transducer
(Gas / Air)
G
Generator
Electrical Wire
Pressure Switch
M
Electric Motor
Pressure Switch
(Adjustable)
Temperature Switch
T
Pressure
Symbol
Temperature
Symbol
Level
Symbol
Flow
Symbol
Electrical Symbols (Electrical)
Fixed Cab Riser
RENR9919
September 2006
330D Material Handler
Hydraulic System
LEM1-UP
©
2006 Caterpillar
All Rights Reserved
Printed in U.S.A.
15 14 13 1112 1021 20 19 1718 16
21 20 19 1718 16
9 8 7 6 5 4 3 2 1
15 14 13 1112 10 9 8 7 6 5 4 3 2 1
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
MACHINE COMPONENT LOCATIONS
Note A: Refer to Parts Manual for your specific machine.
Description
Part
Number
Machine Location
Side View Top View
Schematic
Location
Accumulator Gp - Hydraulic
(Pilot Oil)
164-6981 C-8
Block
(LH)
(RH)
(Left)
(Right)
(Left)
(Right)
(Left)
(Right)
(Left)
(Right)
(Hydraulic Generator)
(Case Drain)
(Main)
185-0488 D-5
201-9379 D-7
Control Gp - Joystick
259-7763 C-4
259-7762 C-3
Cylinder - Boom Note A F-5
Cylinder - Grapple Note A D-3
Cylinder - Stick Note A F-3
Filter & Valve Gp - Pilot
(Hydraulic)
158-8987 A-6
Filter Gp - Oil
126-2075
A-6
B-6
Filter Gp - Oil
(Hydraulic Return)
188-4140 B-7
Generator Gp - Hydraulic (Attachment) 273-6546 D-4
Manifold Gp - Control
(Pilot Oil)
215-5037 B-7
Motor Gp - (Fan) 242-6776 A-8
Motor Gp - Swing 266-7922 F-8
Motor Gp - Travel 271-6376
F-7
F-6
Pump Gp - Gear
(Auxiliary)
274-7930 C-6
Pump Gp - Piston 283-6116 C-6
Pump Gp - Piston
(Hydraulic Fan)
259-0815 B-6
Switch As - Pressure
(Action Input, Fore Boom)
167-3466
B-4
B-5
B-5
C-3
Switch As - Pressure
(Generator Pump)
131-9203 D-4
Swivel Gp 234-4440 E-7
Valve Gp - (Stop Valve, Stick In & Boom Up)
(Attachment)
255-7879 A-5
Valve Gp - Check
(Oil Cooler Bypass)
(Return Check Valve)
190-7745 B-8
Valve Gp - Control
(Rotator)
(Medium Pressure Valve)
232-4103 E-1
Valve Gp - Control
(Reverse Flow)
234-4624 A-8
Valve Gp - Flow Control
(Boom Cylinder Decompression)
(Grapple Flow Reduction Valve)
168-0712 D-3
Valve Gp - Load Control
(Boom Lowering, Drift Reduction, Relief)
263-1962
F-5
F-4
Valve Gp - Load Control
(Stick Lowering Control)
202-9264
F-4
F-3
Valve Gp - Main Control 285-1542 D-5
Valve Gp - Manual
(Boom Lower)
270-5692 F-5
Valve Gp - Pilot
(Travel)
270-5947 B-5
Valve Gp - Pressure Reducing
(Boom, Swing Priority)
232-4102 C-7
Valve Gp - Relief
(Line)
255-5661 D-6
Valve Gp - Shuttle 185-0462 B-4
259-7732 C-8
Valve Gp - Solenoid
(Heavy Lift)
121-6303 C-7
Valve Gp - Solenoid
(Negative Flow Control,
Proportional Reducing Valve)
171-0188 C-5
Valve Gp - Solenoid
(Reversing Fan)
242-6880 A-7
Component Locations
Valve Gp - Solenoid
(Work Tool, 2-Function)
(2 Multi Solenoid Valve)
259-7430 E-1
Valve Gp - Swing Cushion
(Fine Swing)
158-9090 F-8
Valve Gp - Travel Counterbalance 204-2819
E-7
E-6
L-18
L-18
M-18
O-13
N-13
L-14, M-14
-
-
J-19
J-14
J-19
J-19
J-14
M-18
N-19
M-17
P-19
J-19
J-20
K-19
K-19
O-15
O-14
O-14
J-20
K-14
M-16
J-19
M-18
M-17
N-19
J-20
M-14
L-14
M-5
L-5
M-18
M-15
O-14
L-18
L-18
O-15
M-18
L-18
J-20
N-19
J-19
M-17
P-19
J-19
E-18
E-18
E-18
G-15
G-15
C-14
-
-
D-19
D-14
D-19
D-19
D-14
D-18
D-19
D-17
A-19
A-19
D-20
D-19
D-19
F-15
F-14
F-14
D-20
D-14
C-16
D-19
D-18
D-17
D-19
D-20
C-14
C-14
A-5
A-5
D-18
D-15
F-14
D-18
D-18
F-15
D-18
D-18
D-20
D-19
D-19
D-17
A-19
A-19
RENR9919-00
30 Page, Color 2
THIS SCHEMATIC IS FOR THE 330D FIXED CAB RISER MATERIAL HANDLER
PART #: 275-7926 HE00
Components are shown installed on a fully operable machine with the key and engine
off and transmission shifter in neutral.
LINE PATTERNS
Drain / Return Lines
Component Group
Pilot / Load Sensing Pressure
Pressure Line
Attachment
Air Line
CALLOUTS
Taps (Pressure, Sampling,Sensor) by letter
Components by number
YY
52
Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations
DRAIN / RETURN LINE
HYDRAULIC CIRCUIT COLOR DESCRIPTIONS
IMPLEMENT & LEFT PUMP OUTPUT
IMPLEMENT (DRIVE) & RIGHT PUMP OUTPUT
POWER SHIFT CONTROL CIRCUIT
PILOT PUMP OUTPUT
GRAPPLE PUMP OUTPUT
GRAPPLE CONTROL & GRAPPLE ROTATE CIRCUIT
TRAVEL SPEED CONTROL CIRCUIT
SUPPLY LINE
HEAVY LIFT CONTROL CIRCUIT
BUCKET CONTROL & BUCKET CYLINDER CIRCUIT
RIGHT TRAVEL CONTROL & RIGHT TRAVEL MOTOR CIRCUIT
GENERATOR PUMP OUTPUT
STICK CONTROL & STICK CYLINDER CIRCUIT
SHUTTLE VALVE CONTROL CIRCUIT
BOOM CONTROL & BOOM CYLINDER CIRCUIT
FAN PUMP OUTPUT
LEFT TRAVEL CONTROL & LEFT TRAVEL MOTOR CIRCUIT
SWING CONTROL & SWING MOTOR CIRCUIT
MF: PILOT MANIFOLD
NOTES:
2MSV: 2 MULTI SOLENOID VALVE
GFRV: GRAPPLE FLOW REDUCTION VALVE
LCV: LOWERING CHECK VALVE
MPV: MEDIUM PRESSURE VALVE
RCV: RETURN CHECK VALVE
REV FAN: REVERSIBLE FAN
GEN: GENERATOR
ATT: ATTACHMENT
1
2
3
4
5
6
7
8
A
C
D
E
F
1
23
4
56
7
8
A
B
C
D
E
F
B
D
I
LEFT
PUMP
RIGHT
PUMP
PRESSURE
SENSOR
PRESSURE
SENSOR
TRAVEL(L)
TRAVEL(R)
T1
T5
BACK
FWD
BACK
FWD
T2
T4
T6
T3
JLP
JLT
STICK
SWING
OUT
JL1
IN
JL3
R
L
JL2
JL4
GRAPPLE
BOOM
OPEN
CLOSE DOWN UP
JR1
JR2
JR3
JR4
A1
A2
A3
A4
A5
A6
A7
A8
B1
B2
B3
B4
B5
B6 B7
B8
P2
Pi1
P1
DR1
DR2
DR3
DR4
DR5
DR6
P-IN
PSA1
PSA2
T-OUT1
T-OUT2
Pi2
HL Di2 Pi2 Pi3 Di3 DST PL PR Di1 HR
T AL4 aL4
SP3
Di4 Pi4 Pi1
BP3
R3aR5
AR5
BR5
AR3BR3aR3aL3
A
C
B
D
E
F
G
JRP
JRT
bR5
TT
TP
B1
A1
B2
A2
DR
P2
P1
P
A
T
A1
A2
B1
B2
P
T
IN
T
OUT
(T3) (T1) (T4) (T2) (JL2)(JL1)(JR3)(JR2)(JR4) (JR1) (JL3) (JL4)
Pi5
bR3
PAC
PG
PC
S
B1
B2
STOP VALVE
BOOM UP
STICK IN
S
Ps2
SP2
BP2
D1
Dr1
S1A4
B
L
L1
D0
Ps1
Pi1
a4
a1
M1
a3
M2
a2
Pi2
a5
DR
DR1
L3
L2
A
A
B
B
T
P
S
S
T
Pi
P2
P1
T
A2
A1
aR1 aL1 bR1 bL1
bL3 bL2 bL1
bR1
bR4
BL3 AL3
AL1AL2
BL1BL2
aL2
aR1
AR1 BR1
BR4AR4
aL1
aR4
bL4
(STICK IN) (BOOM UP)
bR2 aR4
bR4
aL2 bL2bL3
bL4
aR2
AR2BR2
bR2
2MSV-T
(LOC E-1)
MF-Pi2
(LOC F-8)
MF-Pi1
(LOC E-7)
BLCV-Pi
(LOC E-5)
RCV-C
(LOC F-8)
GEN-DR
(LOC C-4)
GEN-P
(LOC C-4)
MPV-P
(LOC D-1)
RCV-D
(LOC C-4)
RCV-E
(LOC D-1)
SLCV-DR
(LOC E-3)
BLCV-DR
(LOC E-5)
2MSV-P
(LOC E-1)
NO.1
(TRAVEL)
NO.2
(SWING)
NO.3
(LOCK)
SLCV-Pp
(LOC E-4)
TANK LINE-1
(LOC E-8)
GFRV-DR
(LOC C-3)
GFRV-IN
(LOC C-3)
MF-DR4
(LOC F-1)
RCV-B
(LOC D-5)
RCV-A
(LOC D-8)
RCV-A
(LOC B-8)
RCV-B
(LOC B-8)
STICK(2)
BOOM(1)
GRAPPLE
BUCKET
TRAVEL(R)
TRAVEL(L)
SWING
STICK(1)
BOOM(2)
(UP)
(OUT)
(IN)
(R)
(L)
(FWD)
(BACK)
(FWD)
(BACK) (CLOSE)
(OPEN) (UP)
(DOWN)
(OUT)
(IN)
R2
ST
SP1
BL3
R1
BT
BR4
BP1
TRAVEL MOTOR (LEFT)
TRAVEL MOTOR (RIGHT)
(RIGHT)
(RIGHT)
(LEFT)
(LEFT)
T1
Pp3
Pp3
A
B
A
B
STICK
CYLINDER
BOOM
CYLINDER
SWING MOTOR
OUT
IN
DR
T
Pi
DR
CV
CYL
Pp
DR
T
A
A
T
DR
Pp
X
C
C
X
GRAPPLE
OPEN EPRV
GRAPPLE
MULTI
CYLINDER
T
P
A1
B1
A2
B2
DR
CYL
CV
Pi
T
X
X
X
X
P
T
T2
T1
T2
B
A
BG
AG
MU
DR
PG
AG
BG
BG
AG
AL3
AR4
BR4
AL2BL2
AR1BR1AL1BL1
A1B1 PB1
M
GRAPPLE
ROTATE
LS
T
PA1 P
ROTATE
CCW
ROTATE
CW
aR2
BL3
RCV-C
(LOC B-8)
MPV-P
(LOC C-6)
RCV-E
(LOC A-8)
2MSV-T
(LOC B-7)
2MSV-P
(LOC C-5)
MF-Pi2
(LOC B-7)
MF-Pi1
(LOC B-8)
GEN-P
(LOC C-6)
GEN-DR
(LOC A-6)
RCV-D
(LOC A-8)
MPV-DR
(LOC F-8)
BLCV-Pi
(LOC D-5)
BLCV-DR
(LOC B-7)
SLCV-DR
(LOC B-7)
SLCV-Pp
(LOC C-7)
AR2 BR2
TANK LINE-1
(LOC A-6)
GFRV-IN
(LOC A-5)
GFRV-DR
(LOC A-5)
MPV-DR
(LOC E-2)
DR
A1
B1
RCV-C-A
(LOC E-5)
RCV-C-B
(LOC E-5)
RCV-C-A
(LOC F-8)
RCV-C-B
(LOC F-8)
40
27
26
8
9
8
6
7
6
5
3
4
10
2
1
13
14
15
16
18
17
19 20
21
22 23
24
30
29
28
41
42
43
31
53
52
59
54
32
34
33
47
46
44
45
48
55
56
57
49
50
51
38
37
36
35
Callout
Numbers
Description
Schematic
Location
1 Swing Brake F-8
2 Swing Motor F-8
3 Left Travel Motor F-7
4 Right Travel Motor F-6
5 Grapple Cylinders D-3
6 Boom Lowering Control Valves F-4, F-5
7 Boom Cylinders F-5
8 Stick Lowering Control Valves F-3, F-4
9 Stick Cylinders F-3
10 Swivel E-6
13 Boom II Control Valve D-8
14 Stick I Control Valve D-7
15 Swing Control Valve D-7
16 Left Travel Control Valve D-7
17 Straight Travel Control Valve D-7
18 Main Relief Valve D-8
19 Right Travel Control Valve D-6
20 Grapple Control Valve D-6
21 Main Control Valve D-5
22 Boom I Control Valve D-5
23 Stick II Control Valve D-5
24 Generator Motor D-4
26 Grapple Rotate Motor E-2
27 Grapple Rotate Control Valve E-2
28 Hydraulic Activation Valve E-2
29 Solenoid Valve (Hydraulic Activation) C-8
30 Accumulator C-8
31
Pressure Reducing Valve
(Boom Priority Mode and Swing Priority Mode)
C-7
32 Heavy Lift Solenoid C-7
33 Auxiliary Pump (Grapple) C-6
34 Auxiliary Pump (Generator) C-6
35 Travel Pilot Control Valve B-5
36 Proportional Reducing Valve (Negative Flow Control) C-5
37 Pilot Control Valve (Stick and Swing) C-4
38 Pilot Control Valve (Grapple and Boom) C-3
40 Solenoid Valve Group (Cab Riser and Grapple Rotate) E-1
41 Swing Brake Solenoid Valve B-8
42 Travel Speed Solenoid Valve B-8
43 Pilot Oil Manifold B-7
44 Left Pump B-6
45 Right Pump B-6
46 Pilot Pump B-6
47 Fan Pump B-6
48 Proportional Reducing Valve (Power Shift Pressure) B-6
49 Travel Pressure Switch (Left) B-5
50 Travel Pressure Switch (Right) B-5
51 Pressure Switch (Implement and Swing) B-4
52 Oil Cooler B-8
53 Return Filter B-7
54 Hydraulic Tank A-7
55 Pilot Relief Valve A-6
56 Pilot Filter A-6
57 Stop Valves (Stick In and Boom Up) A-5
59 Fan Motor (Hydraulic Oil Cooler) A-8
58 Reducing Valve (Grapple Open) D-3
Component Locations
referenced by
Systems Operations Manual, RENR9908
MAIN
RELIEF
VALVE
GENERATOR GRAPPLE
TRAVEL / SWING
BOOM / STICK
GRAPPLE ROTATE
VALVE GP
CONTROL
(REVERSE FLOW)
234-4624
MOTOR GP
(FAN)
242-6776
VALVE GP
SOLENOID
(REVERSING
FAN)
242-6880
FILTER GP
OIL
(HYDRAULIC RETURN)
188-4140
VALVE GP
CHECK (OIL COOLER BYPASS)
(RCV)
190-7745
MANIFOLD GP
CONTROL
(PILOT OIL)(MF)
215-5037
ACCUMULATOR GP
HYDRAULIC
(PILOT OIL)
164-6981
MOTOR GP
SWING
266-7922
VALVE GP
SWING CUSHION
(FINE SWING)
158-9090
MOTOR GP
TRAVEL
271-6376
MOTOR GP
TRAVEL
271-6376
VALVE GP
CONTROL
(ROTATOR)
(MPV)
232-4103
VALVE GP
LOAD CONTROL
(BOOM LOWERING,
DRIFT REDUCTION,
RELIEF)
263-1962
VALVE GP
LOAD CONTROL
(BOOM LOWERING,
DRIFT REDUCTION,
RELIEF)
263-1962
VALVE GP
MANUAL
(BOOM LOWER)
270-5692
VALVE GP
LOAD CONTROL
(STICK LOWERING
CONTROL)
202-9264
VALVE GP
LOAD CONTROL
(STICK LOWERING
CONTROL)
202-9264
VALVE GP
FLOW CONTROL
(BOOM CYLINDER
DECOMPRESSION)
(GFRV)
168-0712
GENERATOR GP
HYDRAULIC
273-6546 (ATT)
VALVE GP
MAIN CONTROL
285-1542
VALVE GP
RELIEF (LINE)
255-5661
VALVE GP
SHUTTLE
259-7732
VALVE GP
PRESSURE
REDUCING
(BOOM,
SWING
PRIORITY)
232-4102
VALVE GP
SOLENOID
(HEAVY LIFT)
121-6303
PUMP GP
GEAR
(AUXILIARY)
274-7930
PUMP GP
PISTON
(HYDRAULIC FAN)
259-0815
VALVE GP
PILOT (TRAVEL)
270-5947
FILTER GP
OIL
(CASE DRAIN)
126-2075
FILTER GP
OIL
(HYDRAULIC GENERATOR)
126-2075
VALVE GP
SHUTTLE
185-0462
FILTER & VALVE GP
PILOT (HYDRAULIC)
158-8987
CONTROL GP
JOYSTICK (LH)
259-7763
CONTROL GP
JOYSTICK (RH)
259-7762
VALVE GP
SOLENOID
(NEGATIVE FLOW
CONTROL, PROPORTIONAL
REDUCING VALVE)
171-0188
VALVE GP
(STOP VALVE, STICK IN
& BOOM UP) (ATT)
255-7879
SWITCH AS
PRESSURE
(ACTION INPUT)
167-3466
SWITCH AS
PRESSURE
(ACTION INPUT)
167-3466
SWITCH AS
PRESSURE (ACTION
INPUT, FORE BOOM)
167-3466
SWITCH AS
PRESSURE (ACTION
INPUT, FORE BOOM)
167-3466
VALVE GP
TRAVEL
COUNTERBALANCE
204-2819
VALVE GP
TRAVEL
COUNTERBALANCE
204-2819
SWIVEL GP
234-4440
VALVE GP
SOLENOID
(WORK TOOL,
2 FUNCTION)
(2MSV)
259-7429
BLOCK
201-9379
PUMP GP
PISTON (MAIN)
283-6116
SWITCH AS
PRESSURE
(GENERATOR PUMP)
131-9203
BLOCK
185-0488