INTERACTIVE SCHEMATIC
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Information
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EC-C3
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©
2010 Caterpillar, All Rights Reserved
Printed in U.S.A.
RENR9479-05
April 2010
Reverse Fan
330D and 336D Excavator
336D MHPU
Hydraulic System - Attachment
330D:
GBC1-UP
NBD1-UP
GGE1-UP
THJ1-UP
C5K1-UP
E4K1-UP
H3K1-UP
L2K1-UP
LEM1-UP
330D:
LRM1-UP
ERN1-UP
JLP1-UP
MWP1-UP
RAS1-UP
EDX1-UP
MEY1-UP
T2Y1-UP
336D:
J2F1-UP
PRF1-UP
W3K1-UP
WRK1-UP
KKT1-UP
PGW1-UP
336D MHPU:
M3M1-UP
M3N1-UP
COMPONENT LOCATION
Description
Part
Number
Machine
Location
Schematic
Location
Accumulator Gp - Pilot Manifold 164-6981 1 B-4
Cylinder Gp - Boom Note A 2 F-5
Cylinder Gp - Bucket Note A 3 E-5
Cylinder Gp - Stick Note A 4 F-5
Filter Gp - Case Drain 126-2075 5 A-4
Filter Gp - Pilot Hydraulic 158-8987 6 A-4
Filter Gp - Return Oil 188-4140 7 B-6
Motor Gp - Left Travel 271-6376 9 F-3
Motor Gp - Right Travel 271-6376 10 F-2
Motor Gp - Swing 200-3373 11 F-7
Pump Gp - Hydraulic Fan 259-0815 12 B-3
Pump Gp - Main and Pilot 283-6116 13 A-2
Sensor As - Left Pump Press. 221-8859 14 A-2
Sensor As - Right Pump Press. 221-8859 15 B-2
Switch As - Left Travel Pilot 167-3466 16 D-7
Switch As - Pilot Pressure 167-3466 17 A-7
Switch As - Right Travel Pilot 167-3466 18 D-6
Swivel Gp 234-4440 19 E-3
Tank As - Hydraulic Oil 239-1661 20 A-5
Valve Gp - Check, Cooler Bypass 190-7745 21 C-7
Valve Gp - Left Travel Counterbalance 204-2819 29 E-3
Valve Gp - Load Control Boom Cylinder 255-5683 30 D-1
Valve Gp - Load Control Stick Cylinder 255-5680 31 D-5
Valve Gp - Main Control 285-1536 32 C-2
Valve Gp - Pilot Manifold 215-5037 34
B-5
Valve Gp - Pilot, Bucket and Boom 270-5952 35 B-6
Valve Gp - Pilot, Stick and Swing 270-5951 36 B-7
Valve Gp - Press. Red. Boom/ Swing 232-4102 37 B-4
Valve Gp - Right Travel Counterbalance 204-2819 40 E-2
Valve Gp - Shuttle 185-0462 41 A-7
Valve Gp - Shuttle 259-7732 42 B-4
Valve Gp - Swing Cushion 158-9085 43 E-7
Valve Gp - Travel Pilot 270-5947 44 D-6
Motor Gp - Hydraulic Fan 242-6776 50 C-6
Valve Gp - Control, Reverse Flow 234-4624 51 C-6
Valve Gp - Solenoid, Reversing Pilot 242-6880 52 C-6
Note A: Refer to service manual for specific cylinder information.
Attachments
TAP LOCATION
Tap
Number
Description
Schematic
Location
AA Left Pump Delivery Pressure A-1
BB Right Pump Delivery Pressure
B-1
CC Pilot Pump Delivery Pressure A-4
OO Pump Power Shift Pressure B-1
SOS Hydraulic Oil Sampling Port A-4
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
DRAIN / RETURN LINE
RIGHT MAIN PUMP OUTPUT
RIGHT MAIN PUMP OUTPUT
LEFT AND RIGHT MAIN PUMP POWERSHIFT CIRCUIT
PILOT PUMP OUTPUT
FAN PUMP AND CONTROL CIRCUIT
ATTACHMENT 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
LEFT TRAVEL MOTOR CONTROL CIRCUIT
SWING MOTOR CONTROL CIRCUIT
SWING BRAKE CONTROL CIRCUIT
HYDRAULIC CIRCUIT COLOR DESCRIPTIONS
THIS SCHEMATIC IS FOR THE 330D AND 336D EXCAVATOR AND 336D MHPU HYDRAULIC SYSTEM
ATTACHMENT: REVERSE FAN
MEDIA NUMBER: RENR9479-05
PART NUMBER: 259-7869, CHANGE: 03, 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
F
1234567
A
B
C
D
E
F
1234567
B
A
CC
SOS
(11) MOTOR GP
SWING
200-3373
(9) MOTOR GP
LEFT TRAVEL
271-6376
(29) VALVE GP
LEFT TRAVEL COUNTERBALANCE
204-2819
(10) MOTOR GP
RIGHT TRAVEL
271-6376
(40) VALVE GP
RIGHT TRAVEL COUNTERBALANCE
204-2819
(13) PUMP GP
MAIN / PILOT
283-6116
(12) PUMP GP
HYDRAULIC FAN
259-0815
(15) SENSOR AS
RIGHT PUMP PRESS
221-8859
(14) SENSOR AS
LEFT PUMP
221-8859
(32) VALVE GP
MAIN
CONTROL
285-1536
(6) FILTER GP
PILOT
HYDRAULIC
158-8987
(5) FILTER GP
CASE DRAIN
126-2075
(37) VALVE GP
PRESS REDUCING
BOOM / SWING
232-4102
(42) VALVE GP
SHUTTLE
259-7732
(20) TANK AS
HYDRAULIC OIL
239-1661
(17) SWITCH AS
PILOT PRESSURE
167-3466
(41) VALVE GP
SHUTTLE
185-0462
(35) VALVE GP
PILOT BUCKET / BOOM
270-5952
(36) VALVE GP
PILOT STICK / SWING
270-5951
(21) VALVE GP
CHECK COOLER BYPASS
190-7745
(7) FILTER GP
RETURN OIL
188-4140
(1) ACCUMULATOR GP
PILOT MANIFOLD
164-6981
(16) SWITCH AS
LEFT TRAVEL
PILOT
167-3466
(18) SWITCH AS
RIGHT TRAVEL
PILOT PRESS
167-3466
(43) VALVE GP
SWING CUSHION
158-9085
(44) VALVE GP
TRAVEL PILOT
270-5947
(31) VALVE GP
LOAD CONTROL STICK CYLINDER
255-5680
(30) VALVE GP
LOAD CONTROL BOOM CYLINDER
255-5683
(34) VALVE GP
PILOT MANIFOLD
215-5037
(19) SWIVEL GP
234-4440
(50) MOTOR GP
HYDRAULIC FAN
242-6776
(51) VALVE GP
CONTROL
REVERSE FLOW
234-4624
(52) VALVE GP
SOLENOID
REVERSE FLOW
242-6880
AA
BB
OO
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
AR2BR2
aL3
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
IN
OUT
bR5
TT
TP
T
PG
PC
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
RETURN CHECK VALVE
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
(4) CYLINDER GP
STICK
(3) CYLINDER GP
BUCKET
(2) 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
R.C.V.-C
R.C.V.-B
R.C.V.-A
R.C.V.-C
R.C.V.-B
R.C.V.-A
PL PR
PR
PL
HL
HR
HR
HL
DR
A1
B1
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
R.C.V.:
T
P
B
A
S
DR
DR1
L3 L2
S
Pi
T
MACHINE COMPONENT LOCATIONS
44
44
43
43
42
41
41
40
40
40
37
37
36
36
35
35
34
34
31
31
30
30
29
29
21
21
21
20
20
19
19
18
18
17
17
16
16
15
15
14
14
11
11
10
10
9
9
7
7
4
4
3
3
2
2
2
1
1
VIEW ALL CALLOUTS
FAN COMPONENT LOCATIONS
51
50
52
32
13
12
VIEW ALL CALLOUTS
MACHINE TAP LOCATIONS
OO
6
5
SOS
CC
BB
AA
VIEW ALL CALLOUTS
