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CAT 330D and 336D Excavator Hydraulic System Attachment 3

INTERACTIVE SCHEMATIC
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©
2009 Caterpillar, All Rights Reserved
Printed in U.S.A.
RENR9508-02
September 2009
System 14: Combined Function With Medium Pressure
330D and 336D Excavator
Hydraulic System - Attachment
330D:
B6H1-UP
JLP1-UP
MWP1-UP
EDX1-UP
336D:
J2F1-UP
PRF1-UP
W3K1-UP
WRK1-UP
KKT1-UP
PGW1-UP
COMPONENT LOCATION
Description
Part
Number
Machine
Location
Schematic
Location
Pump Gp - Gear (Pilot) (Medium Pressure) 207-8235 B-3
Valve Gp - Control (Medium Pressure) 232-4103 E-6
Valve Gp - Solenoid (Pressure Reducing) 259-7430 D-3
Schematic - System 14 (Standard) 255-5859
Note B D-2
Sensor As - 1-Way/2-Way Flow Pessure Note B E-4
Valve Gp - 1-Way/2-Way Check Sol (EC1) D-5
Valve Gp - 1-Way/2-Way Check Sol (EC2) E-5
Valve Gp - 1-Way/2-Way Check Sol (EC3) E-4
Valve Gp - 4 Function Work Tool Solenoids E-2
Valve Gp - Auxilliary Control C-6
Valve Gp - Negative Flow Control Solenoid Note B D-2
Valve Gp - Solenoid & Relief (ERV1) Note B D-5
Valve Gp - Solenoid & Relief (ERV3) Note B E-5
Accumulator Gp
164-6981
A-5
Block
Cylinder Gp - Bucket Note A E-5
Cylinder Gp - Boom Note A E-6
Cylinder Gp - Stick Note A E-5
Filter Gp - Case Drain
289-8194
A-5
Filter Gp - Pilot Hydraulic
158-8987
A-4
Filter Gp - Return Oil
188-4140
B-6
Manifold Gp - Control
215-5037
B-6
Motor Gp - Fan
234-4638
B-6
Motor Gp - Left Travel
271-6376
E-4
Motor Gp - Right Travel
271-6376
E-3
Motor Gp - Swing 200-3373 E-7
Pump Gp - Fan
259-0815
B-3
Pump GP - Main Hydraulic 283-6116 B-3
Sensor As - Left Pump Pressure 260-2180 A-2
Sensor As - Right Pump Pressure B-2
Switch As - LH Travel Pressure
307-5769
C-7
Switch As - Pilot Pressure Note B A-7
Switch As - RH Travel Pressure C-6
Swivel Gp
234-4440
D-3
Valve Gp - Cooler Bypass
190-7745
C-6
Valve Gp - Heavy Lift Solenoid
121-6303
A-4
Valve Gp - Left Travel Counterbalance
204-2619
E-4
Valve Gp - LH Joystick
270-5951
A-7
Valve Gp - Load Control (Boom)
255-5683
Note B
Note B
Note B
Note B
Note B
C-2
Valve Gp - Load Control (Stick)
255-5680
C-5
Valve Gp - Main Control
285-1536
C-3
Valve Gp - Pilot Travel
270-5947
C-7
Valve Gp - Press Reducing Boom/Swing 232-4102 B-4
Valve Gp - RH Joystick
270-5952
A-7
Valve Gp - Right Travel Counterbalance E-3
Valve Gp - Shuttle 185-0462 A-7
Valve Gp - Swing Cushion 158-9085
1
2
3
6
20
27
28
29
30
31
39
45
46
4
7
8
9
10
11
12
13
14
15
16
17
18
19
21
22
23
24
25
26
32
33
34
35
36
37
38
40
41
42
43
44
47
E-7
Medium Pressure Attachment
Standard 330D System 14
Note A: Refer to parts manual for specific cylinder information.
Note B: Part numbers are located on the main Hydraulic System Schematic
according to the effectivity of the machine.
260-2180
307-5769
204-2619
TAP LOCATION
Tap
Number
Description
Schematic
Location
AA Pilot Pump Delivery Pressure A-4
BB Right Pump Delivery Pressure B-2
CC Pump Power Shift Pressure A-2
DD Left Pump Delivery Pressure A-2
EE Auxilliary Control Pilot Pressure (Pb1)
FF
Auxilliary Control Pilot Pressure (Pa1)
GG
Single/Double Attach Pressure (bR2) E-2
HH Single/Double Attach Pressure (aR2) E-2
LL Left Pump Negative Flow Signal Pressure D-1
MM Right Pump Negative Flow Signal Pressure D-1
SOS Hydraulic Oil Sampling Port A-4
NN Medium Pressure Control Pilot Pressure (MPb1) D-2
OO Medium Pressure Control Pilot Pressure (MPa1) D-3
E-2
E-2
FLUID POWER SYMBOLS
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
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 ACTINGSINGLE 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
ELECTRICAL SYMBOLS
Hydraulic Symbols (Electrical)
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
Pressure
Symbol
Temperature
Symbol
Level
Symbol
Flow
Symbol
Electrical Symbols (Electrical)
T
LINE PATTERNS
Drain / Return Lines
Component Group
Pilot / Load Sensing Pressure
Pressure Line
Attachment
Air Line
CALLOUTS
Taps (Pressure, Sampling, Sensor - by letter)
YY
THIS SCHEMATIC IS FOR THE 330D and 336D EXCAVATOR
ATTACHMENT: SYSTEM 14 WITH MEDIUM PRESSURE
MEDIA NUMBER: RENR9508-02
PART NUMBER: 255-5862, CHANGE: 01, VERSION: HE
Components are shown installed on a fully operable machine.
Refer to the appropriate Service Manual for Troubleshooting, Specifications.
A
B
C
D
E
1234567
A
B
C
D
E
1234567
DRAIN / RETURN LINE
HYDRAULIC CIRCUIT COLOR DESCRIPTIONS
RIGHT MAIN PUMP OUTPUT
LEFT MAIN PUMP OUTPUT
LEFT AND RIGHT MAIN PUMP POWER SHIFT CIRCUIT
PILOT PUMP OUTPUT
FAN PUMP OUTPUT
SYSTEM 14 ATTACHMENT CONTROL CIRCUIT
NEGATIVE FLOW CONTROL CIRCUIT
SUPPLY LINE
BUCKET CYLINDER CONTROL CIRCUIT
RIGHT TRAVEL MOTOR CONTROL CIRCUIT
TRAVEL SPEED CONTROL CIRCUIT
STICK CYLINDER CONTROL CIRCUIT
BOOM CYLINDER CONTROL CIRCUIT
HEAVY LIFT CONTROL CIRCUIT
MEDIUM PRESSURE PUMP AND MOTOR CONTROL CIRCUIT
LEFT TRAVEL MOTOR CONTROL CIRCUIT
SWING MOTOR CONTROL CIRCUIT
LL
MM
HH GG FF EE
SOS
AA
BB
CC
DD
OO NN
(39) VALVE GP
NEGATIVE
FLOW CONTROL
SOLENOID
(30) VALVE GP
4 FUNCTION
WORK TOOL
SOLENOID
µµµµµ
µ
µ µ
µµ
µ µ
µ
µµ
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
BUCKET
BOOM
OPEN
CLOSE
DOWN
UP
JR1
JR2 JR3
JR4
JRP
JRT
Di2
Pi2
Pi3
Di3
DST
Di1
T
AL4
aL4
SPi
SDr
SP3
Di4
Pi4
Pi1
BP3
BDr BPi
BP2
R3
aR5
AR5
BR5
AR2
BR2
aL3
P
T
A1
A2
B1
B2
SINGLE
DOUBLE
SINGLE
DOUBLE
SWING MOTOR
P1
P2
B1
B2
A1
A2
T
P2
Pi1
P1
DR1
DR2
DR3 DR4
DR5
DR6
P-IN
PSA1
PSA2
T-OUT1
T-OUT2
Pi2
FA1
FB1
DR
DR
IN
OUT
bR5
DR
A
B
A
B
P
A
T
Pi5
A
B
TT
TP
T
PG
PC
P
A1
A2
A3
A4
B4
B3
B2
B1
T
PAC
PP3
PP3
A
B
B
A
T1
T1
TRAVEL MOTOR (LEFT)
TRAVEL MOTOR (RIGHT)
T2
T2
G
F
SP2
AG
AG
BG
BG
E
AG
DR
MU
BG
AG
B
A
Pi1
Ps2
Pi2
D1
Ps1
S1
S
B
Dr1
Psv
a4
a1
a3
L
a2
a5
L1
M1
M2
A4
D0
A1
A2
A3
A4 A5
A6
A7
A8
B1
B2
B3 B4
B5
B6
B7
B8
(9) CYLINDER GP
STICK
(7) CYLINDER GP
BUCKET
(8) CYLINDER GP
BOOM
aL1 bL1 bR1 aR1
BL2 AL2
NO.1
(TRAVEL)
NO.2
(SWING)
NO.3
(LOCK)
AR3
AR4
aR4
BR3
aR3
aR2
bR2
aR1
BR1AR1
aL1
AL1
BL1
aL2
BL2
AL2
BL3
AL3
bL4
bL3 bL2 bL1 bR4
bR3
BR4
bR1
Pb1
Pa1
Pb1Pa1bR2aR2
R.C.V-CR.C.V-B
R.C.V-A
R.C.V-D R.C.V-E
R.C.V-C
R.C.V-D
R.C.V-B
R.C.V-A
PL PR
PR
PL
HL
HR
HR
HL
µ
µ µ
µ
DR
A1
B1
DR
DR1
L2
L3
A
B
F2
STICK(2)
BOOM(1)
ATCH
BUCKET
TRAVEL(R)
TRAVEL(L)
SWING
STICK(1)
BOOM(2)
(UP)
(OUT)
(IN)
(R)
(L)
(FWD)
(BACK)
(FWD)
(BACK)
(OPEN)
(CLOSE)
(UP)
(DOWN)
(OUT)
(IN)
ST
SP1
BL3
BT
BP1
BR4
R2
R1
aR3 aR4 bR3 bR4
bL3 bL4 aL2bL2
AL3 BL3
AR3 BR3
AR4 BR4
BL1 AL1 BR1 AR1
(6) BLOCK
(28) VALVE GP
1-WAY/2-WAY
CHECK (EC2)
SOLENOID
(29) VALVE GP
1-WAY/2-WAY
CHECK (EC3)
SOLENOID
(27) VALVE GP
1-WAY/2-WAY
CHECK (EC1)
SOLENOID
(45) VALVE GP
SOLENOID AND
RELIEF (ERV1)
(46) VALVE GP
SOLENOID AND
RELIEF (ERV3)
(20) SENSOR AS
1-WAY/2-WAY
FLOW PRESSURE
(31) VALVE GP
AUXILLIARY
CONTROL
(17) MOTOR GP
SWING
200-3373
(47) VALVE GP
SWING
CUSHION
(34) VALVE GP
LEFT TRAVEL
COUNTERBALANCE
204-2619
(43) VALVE GP
RIGHT TRAVEL
COUNTERBALANCE
204-2619
(16) MOTOR GP
RIGHT TRAVEL
271-6376
(15) MOTOR GP
LEFT TRAVEL
271-6376
(26) SWIVEL GP
234-4440
(40) VALVE GP
PILOT TRAVEL
270-5947
(2) VALVE GP
CONTROL
(MEDIUM
PRESSURE)
232-4103
(25) SWITCH AS
RH TRAVEL
PRESSURE
307-5769
(23) SWITCH AS
LH TRAVEL
PRESSURE
307-5769
BLOCK
(32) VALVE GP
COOLER BYPASS
190-7745
(14) MOTOR
GP
FAN
234-4638
(35) VALVE GP
LH JOYSTICK
270-5951
(42) VALVE GP
RH JOYSTICK
270-5952
(44) VALVE GP
SHUTTLE
185-0462
(24) SWITCH AS
PILOT PRESSURE
SLOW
RETURN
BYPASS
OIL COOLER
(12) FILTER GP
RETURN OIL
188-4140
RETURN
(13) MANIFOLD GP
CONTROL
215-5037
(10) FILTER GP
CASE DRAIN
289-8194
(4) ACCUMULATOR GP
164-6981
(41) VALVE GP
PRESS REDUCING
(BOOM/SWING)
232-4102
(33) VALVE GP
HEAVY LIFT
SOLENOID
121-6303
(11) FILTER GP
PILOT HYDRAULIC
158-8987
(18) PUMP GP
FAN
259-0815
(1) PUMP GP
GEAR (PILOT)
(MEDIUM
PRESSURE)
207-8235
(19) PUMP GP
MAIN HYDRAULIC
283-6116
(22) SENSOR AS
RIGHT PUMP
PRESSURE
260-2180
(21) SENSOR AS
LEFT PUMP
PRESSURE
260-2180
(38) VALVE GP
MAIN CONTROL
285-1536
(36) VALVE GP
LOAD CONTROL
(BOOM)
255-5683
(37) VALVE GP
LOAD CONTROL
(STICK)
255-5680
M.P.V-P
M.P.V-P
(3) VALVE GP
SOLENOID (PRESSURE
REDUCING)
259-7430
P
A1
A2
B2
B1
T
MPb1MPa1
MPa1
MPb1
R.C.V-E
PB
PA
T
P
A
B
LINES GP - PILOT (SYSTEM 14)
D
D
SECTION D-D
PUMP COMPARTMENT VIEW
39
30
6
25
MM
LL
HH
GG
FF
EE
VIEW ALL CALLOUTS
MAIN PUMP AND FILTER GP
19
18
1110
SOS
DDCCBB AA
VIEW ALL CALLOUTS

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