CAT 330D Excavator and 336D MHPU Hydraulic System Attachment Hydraulic Variable Gauge Undercarriage (HVGU)

RENR7388-01
16 Page, (Dimensions: 34 inches x 24 inches)
Hydraulic Variable Gauge Undercarriage (HVGU)
RENR7388-01
April 2010
330D Excavator and 336D MHPU
Printed in U.S.A.© 2010 Caterpillar, All Rights Reserved
Hydraulic System - Attachment
330D:
THJ1-UP
336D MHPU:
M3N1-UP
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
AB
PT
AB
PT
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)
UNDERCARRIAGE CYLINDERS AND SWIVELHVGU VALVES
A
A
VIEW A-A
B
4
3
2
1
Description
Part
Number
Machine
Location
Schematic
Location
Cylinder GP - Undercarriage (Adjustable Gauge) 121-4121 1 F-4
Swivel GP 234-7109 2 E-5
Valve GP - Manual Control 121-9164 3 E-3
Valve GP - Pressure Reducing 124-1331 4 E-3
Component Locations
VALVE GP -
MANUAL CONTROL
RENR7388-01
16 Page, (Dimensions: 34 inches x 24 inches)
1
2
3
4
56
7
9
1
2
3
4
56
7
A
B
A
B
C
D
E
F
C
D
E
F
3
4
56
7
3
4
56
7
A
B
C
D
E
F
A
B
C
D
E
F
1
2
8
98
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
Components are shown installed on a fully operable machine with the key and engine off, transmission shifter
in neutral and with parking brake set.
Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations.
THIS SCHEMATIC IS FOR THE 330D EXCAVATOR AND 336D MHPU
ATTACHMENT: HYDRAULIC VARIABLE GAUGE UNDERCARRIAGE
PART NUMBER: 284-4975, CHANGE: 00, VERSION: V
MEDIA NUMBER: RENR7388-01
Description
Part
Number
Machine
Location
Schematic
Location
Cylinder GP - Undercarriage (Adjustable Gauge) 121-4121 1 F-4
Swivel GP 234-7109 2 E-5
Valve GP - Manual Control 121-9164 3 E-3
Valve GP - Pressure Reducing 124-1331 4 E-3
Component Locations
A C
B D
BUCKET CYLINDER
TRAVEL(L)
TRAVEL(R)
T1
T5
BACK
FWD
BACK
FWD
T2
T4
T6
T3
JLP JLT
STICK SWING
OUT
JL1
IN
JL3
RL
JL2 JL4
BUCKET BOOM
OPEN CLOSE DOWN UP
JR1JR2 JR3JR4
A1
A2 A3 A4 A5 A6 A7 A8
B1 B2 B3 B4 B5 B6 B7 B8
TRAVEL MOTOR (LEFT) TRAVEL MOTOR (RIGHT)
T1
T1
ABAB
STICK CYLINDER
P2 Pi1
P1
DR1
DR2
DR3
DR4
DR5
DR6
P-IN
PSA1
PSA2
T-OUT1
T-OUT2
Pi2
HL Di2
STICK(2)
BOOM(1)
ATCH
BUCKET
TRAVEL(R)
TRAVEL(L)
SWING
STICK(1)
BOOM(2)
Pi2 Pi3 Di3 DST
bR2
Di1 HR
T
AL4
aL4
SPi
SDr
SP3 Di4 Pi4 Pi1
BP3
BDr
BPi BP2 R3
aR5
AR5BR5
AR2BR2aR2
(UP)
(OUT)
(IN)
(R)
(L)
(FWD)
(REV)
(FWD)
(REV)
(OPEN)
(CLOSE)
(UP)
(DOWN)
(OUT)
BOOM
CYLINDER
PG
DR
MU
AB
SWING MOTOR
P1 P2
T
A1 A2B1 B2
aL3
A
C
B
D
EF
G
JRP
JRT
bR5
IN
OUT
T
DR A1B1
X
X
BA4
Pi2
Pi1
Dr1
Di
D0 PS1
PS2
A1
a1
a4
a3
a2
a5
A2
B
L
L1
S
RR
FR
U
PAC
A
TP
Pi5
PSV
P1
P2
T
A1 A2B1 B2
A
P
T
TT
TP
aL1 bL1 bR1 aR1
AL3 BL3
AR4 BR4
AR3 BR3
AL2BL2
aR4 bR3 bR4 bL2 bL4 aL2
bL3 bL2
bL1
bR1
bR3
bR4
BL3
AL3
AL1
AL2
BL1
BL2
aL2
aR1
AR1
BR1
AR3BR3
BR4
AR4
aL1 aR3
NO.1
(TRAVEL)
NO.2
(SWING)
NO.3
(LOCK)
bL4
AR1BR1AL1BL1
PRPL
PR
PL
DR
DR1
L2L3
AB
aR3
bL3
R1
T2
T1
P2 P1
AC
BD
GH
H'
G'
a1a2
H
H'
GG'
(3) VALVE GP - MANUAL CONTROL
121-9164
(4) VALVE GP - PRESSURE REDUCING
124-1331
(2) SWIVEL GP
234-7109
(1) CYLINDER GP - UNDERCARRIAGE (ADJUSTABLE GAUGE)
121-4121

Leave a Reply

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