Posted on by

CAT 330D and 336D Excavator and 336D MHPU Hydraulic System Heavy Lift and Fine Swing

INTERACTIVE SCHEMATIC
The Bookmarks panel will allow you to
quickly navigate to points of interest.
Click on any text that is BLUE and underlined.
These are hyperlinks that can be used to navi-
gate the schematic and machine views.
When only one callout is showing on a machine view this
button will make all of the callouts visible. This button is
located in the top right corner of every machine view page.
VIEW ALL CALLOUTS
Cover Page
Information
Schematic
Machine Views
Component Table
Tap Table
Fluid Power Symbols
Electrical Symbols
Front Frame
Rear Frame
Tap Views
Features
Options
Bookmarks
X
EC-C3
EC-C2
E-C60
EC-C1
E-C61
To set your screen resolution do the following:
RIGHT CLICK on the DESKTOP.
Select PROPERTIES.
CLICK the SETTINGS TAB.
MOVE THE SLIDER under SCREEN RESOLUTION
until it shows 1024 X 768.
CLICK OK to apply the resolution.
This document is best viewed at a
screen resolution of 1024 X 768.
FUNCTION
Zoom In
HOTKEYS (Keyboard Shortcuts)
Zoom Out
Fit to Page
Hand Tool
“CTRL” / “+”
KEYS
“CTRL” / “-”
“CTRL” / “0” (zero)
“SPACEBAR” (hold down)
Find
“CTRL” / “F”
©
2012 Caterpillar, All Rights Reserved
Printed in U.S.A.
RENR9980-06
January 2012
336D MHPU
Hydraulic System
Heavy Lift and Fine Swing
330D:
MAG1-UP
B6H1-UP
LRM1-UP
JLP1-UP
HAS1-UP
EDX1-UP
T2Y1-UP
336D:
PTB1-UP
J2F1-UP
KDJ1-UP
MYP1-UP
M4T1-UP
WET1-UP
330D and 336D Excavator
330D: 336D MHPU:
JRX1-UP
COMPONENT LOCATION
Description
Part
Number
Machine
Location
Schematic
Location
ACCUMULATOR GP 164-6981 1 B-6
CYLINDER GP - BOOM NOTE A 2 G-3
CYLINDER GP - BUCKET NOTE A 3 G-10
CYLINDER GP - STICK NOTE A 4 G-10
FILTER GP - OIL (CASE DRAIN) 289-8194 5 A-6
FILTER GP - OIL (HYDRAULIC RETURN) 188-4140 6 A-9
FILTER GP - OIL (PILOT) 158-8987 7 A-5
MANIFOLD GP - CONTROL (PILOT OIL) 215-5037 8 B-8
MOTOR GP - HYDRAULIC FAN 234-4638 9 A-10
MOTOR GP - SWING 200-3373 10 G-8
MOTOR GP - TRAVEL (LEFT) 271-6376 11 G-6
MOTOR GP - TRAVEL (RIGHT) 271-6376 12 G-5
PUMP GP - HYDRAULIC FAN 259-0815 13 B-4
PUMP GP - MAIN 322-8733 14 B-3
SWIVEL GP 234-4440 15 F-6
VALVE GP - CHECK (OIL COOLER BYPASS) 190-7745 16 B-9
VALVE GP - CUSHION (CROSSOVER RELIEF) 322-8716 17 F-8
VALVE GP - LOAD CONTROL (BOOM DRIFT RED, RELIEF LINE) 255-5683 18 E-3
VALVE GP - LOAD CONTROL (STICK DRIFT RED, RELIEF LINE) 255-5680 19 E-7
VALVE GP - MAIN CONTROL 285-1345 20 D-4
VALVE GP - PILOT (TRAVEL) 310-0414 21 E-10
VALVE GP - PILOT CONTROL (LEFT JOYSTICK) 297-0533 22 D-10
VALVE GP - PILOT CONTROL (RIGHT JOYSTICK) 297-0532 23 D-9
VALVE GP - PRESSURE REDUCING (BOOM, SWING PRIORITY) 310-0210 24 B-6
VALVE GP - SHUTTLE 185-0462 25 C-10
VALVE GP - SHUTTLE 123-2430 26 B-6
VALVE GP - SOLENOID (HEAVY LIFT) 121-6303 27 B-6
VALVE GP - TRAVEL (COUNTERBALANCE) (LEFT) 204-2819 28 F-7
VALVE GP - TRAVEL (COUNTERBALANCE) (RIGHT) 204-2819 29 F-5
Note A: Refer to Parts Manual for your specific machine.
TAP LOCATION
Tap
Number
Description
Schematic
Location
AA Pilot Filter Pressure Test Port A-6
BB Drive Pump Pressure Test Port B-2
CC Power Shift Pressure Test Port B-2
SOS Hydraulic Oil Sampling Port A-5
DD Idler Pump Pressure Test Port A-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
Components are shown installed on a fully operable machine with the key and engine off,
and with parking brake set.
Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations.
HYDRAULIC SYSTEM / WITH HEAVY LIFT AND FINE SWING
SCHEMATIC PART NUMBER: 259-7414, CHANGE: 02, VERSION: HE
MEDIA NUMBER: RENR9980-06
THIS SCHEMATIC IS FOR THE 330D AND 336D EXCAVATOR AND 336D MHPU
A
B
C
D
E
F
G
12345678910
A
G
12345678910
B
C
D
E
F
LINE PATTERNS
Drain / Return Lines
Component Group
Pilot / Load Sensing Pressure
Pressure Line
CALLOUTS
Taps (Pressure, Sampling, Sensor - by letter)
YY
(52) VALVE GP - CONTROL
138-1234
Callout Number
(Machine Location from
Component LocationsTable)
Component
Name
Part Number
HYDRAULIC CIRCUIT COLOR DESCRIPTIONS
PILOT PUMP OUTPUT
IMPLEMENT AND RIGHT TRAVEL PUMP OUTPUT
HEAVY LIFT CONTROL CIRCUIT
FAN PUMP OUTPUT
POWER SHIFT CONTROL CIRCUIT
SUPPLY LINE
STICK CONTROL AND STICK CYLINDER CIRCUIT
LEFT TRAVEL CONTROL AND LEFT TRAVEL MOTOR CIRCUIT
ATTACHMENT CONTROL CIRCUIT
SWING CONTROL AND SWING MOTOR CIRCUIT
DRAIN / RETURN LINE
IMPLEMENT AND RIGHT TRAVEL PUMP OUTPUT
TRAVEL SPEED CONTROL CIRCUIT
BUCKET CONTROL AND BUCKET CYLINDER CIRCUIT
RIGHT TRAVEL CONTROL AND RIGHT TRAVEL MOTOR CIRCUIT
BOOM CONTROL AND BOOM CYLINDER CIRCUIT
R.C.V.: RETURN CHECK VALVE
AL3 BL3AR3 BR3
AR4 BR4
(4) CYLINDER GP
STICK
(14) PUMP GP
MAIN
322-8733
(3) CYLINDER GP
BUCKET
(2) CYLINDER GP
BOOM
(26) VALVE GP
SHUTTLE
123-2430
(7) FILTER GP
OIL (PILOT)
158-8987
(27) VALVE GP
SOLENOID
(HEAVY LIFT)
121-6303
(24) VALVE GP
PRESSURE REDUCING
(BOOM, SWING
PRIORITY)
310-0210
(1) ACCUMULATOR GP
164-6981
(5) FILTER GP
OIL (CASE DRAIN)
289-8194
(8) MANIFOLD GP
CONTROL
(PILOT OIL)
215-5037
(6) FILTER GP
OIL (HYDRAULIC RETURN)
188-4140
(9) MOTOR GP
HYDRAULIC FAN
234-4638
(16) VALVE GP
CHECK (OIL COOLER
BYPASS)
190-7745
(19) VALVE GP
LOAD CONTROL
(STICK DRIFT RED,
RELIEF LINE)
255-5680
(18) VALVE GP
LOAD CONTROL
(BOOM DRIFT RED,
RELIEF LINE)
255-5683
(20) VALVE GP
MAIN CONTROL
285-1345
(28) VALVE GP
TRAVEL (COUNTERBALANCE)
(LEFT)
204-2819
(10) MOTOR GP
SWING
200-3373
(11) MOTOR GP
TRAVEL (LEFT)
271-6376
(17) VALVE GP
CUSHION
(CROSSOVER RELIEF)
322-8716
bR1 aR1
aL1 bL1
TRAVEL (L) TRAVEL (R)
(21) VALVE GP
PILOT (TRAVEL)
310-0414
T1 T5
BACKFWDBACK FWD
TT
TP
T2 T4 T6 T3
aR3 aR4 bR3 bR4 bL3 bL2 bL4 aL2
JLP
JLT
STICK SWING
OUT
JL1
IN
JL3
R L
JL2 JL4
BUCKET BOOM
OPEN CLOSE DOWN UP
JR1
JR2 JR3JR4
A1 A2 A3 A4 A5 A6 A7 A8
B1 B2 B3 B4 B5 B6
B7 B8
(25) VALVE GP
SHUTTLE
185-0462
JRT
(22) VALVE GP
PILOT CONTROL
(LEFT JOYSTICK)
297-0533
(23) VALVE GP
PILOT CONTROL
(RIGHT JOYSTICK)
297-0532
JRP
R.C.V.: A
R.C.V.: B
R.C.V.: C
A
C
B
D
DR1
DR
B
A
L3
L2
E F
G
IN
OUT
T
T P
A B
A B
AG
Pp3Pp3
T1
T2
T1
T2
BG
BG
AG
(12) MOTOR GP
TRAVEL (RIGHT)
271-6376
(29) VALVE GP
TRAVEL
COUNTERBALANCE
(RIGHT)
204-2819
(15) SWIVEL GP
234-4440
BL1 AL1
BR1
AR1
AL2
BL2
PG
DR
MU
BG AG
B
A
A1
B1
R.C.V.-C
P2 Pi1 DR1
DR2
DR3
DR4 DR5 DR6
P-IN PSA1PSA2
T-OUT1
T-OUT2
Pi2
#1 (TRAVEL)
#2 (SWING)
#3 (LOCK)
P1
PAC
bL3bL4
bL2
aL2
bR4 HR
aR4
bR3
aR3
aL1
bL1
aR1
bR1
R.C.V.: B
R.C.V.: A
AL2
BL2
BL1
AL1
AR1
BR1
BR4
AR4
BR3
AR3
AL3BL3
PR
PR
PL
PL
HL
HL
HR
LEFT
PUMP
RIGHT
PUMP
A
P1 P2
Di2
BOOM (2)
Di3
Pi2
Pi3
A1 B2 A2
T
S
B
L
L1
A4 S1
Dr1
D1 Ps2
D0 Ps1
Pi1
a4
a1
M1
Psv
a3
M2
a5
a2
Pi2
DST Pi5
bR2
Di1 bR5
BR4
BP1BT
R1
BR5
AR5
aR5
R3
IN
BP3
BDr
BPi BP2
Pi1
DOWN
CLOSE
2Ra 2RB 2RA
BACK
BACK
Di4 Pi4
L
IN aL3
SP1 ST
BL3 R2
T
AL4
aL4
UP
SP3
SDr
SPi SP2
STICK (1)
SWING
TRAVEL (L)
TRAVEL
(R)
ATCH
BUCKET
OPENFWDROUT
BOOM (1)
STICK (2)
OUTUP
(13) PUMP GP
HYDRAULIC FAN
259-0815
PG
PC
AA
SOS
DD
BB
CC

Leave a Reply

Your email address will not be published. Required fields are marked *