RENR9459-04
April 2010
Smart Boom (Boom Float)
330D and 336D Excavator
Printed in U.S.A.© 2010 Caterpillar, All Rights Reserved
336D MHPU
Hydraulic System - Attachment
330D:
GBC1-UP
GGE1-UP
THJ1-UP
LRM1-UP
ERN1-UP
RAS1-UP
T2Y1-UP
336D:
JBF1-UP
LMG1-UP
KDJ1-UP
MYP1-UP
JWR1-UP
DTS1-UP
WET1-UP
336D MHPU:
M3M1-UP
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)
PUMP
(2 - SECTION)
SPRING
(ADJUSTABLE)
VARIABILITY LINE RESTRICTION
(VARIABLE)
PRESSURE
COMPENSATION
PUMP
(VARIABLE & PRESSURE
COMPENSATED)
MEASUREMENT
PRESSURE TEMPERATURE FLOW
ROTATING SHAFTS
UNIDIRECTIONAL BIDIRECTIONAL
PUSH - PULL LEVER PEDALGENERAL MANUAL PUSH BUTTON SPRING
FIXED
DISPLACEMENT
VARIABLE DISPLACEMENT
NON-COMPENSATED
UNIDIRECTIONAL
BIDIRECTIONAL
VALVE ENVELOPES VALVE PORTS
FLUID CONDITIONERPUMP OR MOTOR
FLUID POWER SYMBOLS
UNIDIRECTIONAL
BIDIRECTIONAL
RELEASED PRESSURE
EXTERNAL RETURN INTERNAL RETURN
REMOTE SUPPLY PRESSURE
SIMPLIFIED
HYDRAULIC PUMPS
ACCUMULATORS
SPRING LOADED GAS CHARGED
SOLENOID
OR MANUAL
SOLENOID
& PILOT
SOLENOID &
PILOT OR MANUAL
SOLENOID SERVO THERMAL DETENT
HYDRAULIC & PNEUMATIC CYLINDERS
DOUBLE ACTINGSINGLE ACTING
BASIC
SYMBOL
SPRING
LOADED
CHECK VALVES
2 POSITION
INFINITE
POSITIONING
FLOW IN ONE
DIRECTION
FLOW IN
EITHER
DIRECTION
3 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
MAIN AUX
LINE RESTRICTION
(VARIABLE & PRESSURE
COMPENSATED)
MANUAL CONTROL SYMBOLS
HYDRAULIC MOTORS
FLUID STORAGE RESERVOIRS
CROSSING & JOINING LINES
VALVES
PILOT CONTROL SYMBOLS
COMBINATION CONTROLS
BASIC COMPONENT SYMBOLS
ENERGY TRIANGLES
HYDRAULIC PNEUMATIC
INTERNAL
SUPPLY PRESSURE
COMPLETE
FIXED
DISPLACEMENT
VARIABLE DISPLACEMENT
NON-COMPENSATED
HYDRAULIC SYMBOLS (ELECTRICAL)
ELECTRICAL SYMBOLS TABLE
325-AG135 PK-14
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
WIRE
WIRE
(EXAMPLE VALVE)
CURRENT STANDARD
TRANSDUCER
(FLUID)
M
ELECTRIC MOTORTRANSDUCER
(GAS / AIR)
G
GENERATOR
PRESSURE SWITCH ELECTRICAL WIREPRESSURE SWITCH
(ADJUSTABLE)
TEMPERATURE
SWITCH
PRESSURE
SWITCH
TEMPERATURE
SWITCH
LEVEL
SWITCH
FLOW
SWITCH
ELECTRICAL SYMBOLS (ELECTRICAL)
A
CIRCUIT NUMBER
IDENTIFICATION
WIRE
COLOR
WIRE GAUGE
T
RENR9459-04
24 Page, (Dimensions: 34 inches x 28 inches)
Description
Part
Number
Machine
Location
Schematic
Location
Accumulator Gp - Hydraulic (Charged) NOTE B A-4
Cylinder Gp - Boom NOTE A F-2
Cylinder Gp - Bucket NOTE A F-7
Cylinder Gp - Stick NOTE A E-7
Filter & Valve Gp - Pilot (Hydraulic Oil) NOTE B A-4
Filter Gp - Oil (Hydraulic Return) NOTE B A-6
Filter Gp - Oil (Hydraulic, Case Drain) NOTE B A-4
Manifold Gp - Control (Pilot Oil) NOTE B B-6
Motor Gp - Piston (Fan) NOTE B A-7
Motor Gp - Swing NOTE B F-5
Motor Gp - Travel
NOTE B
F-5
F-3
Left
Right
Left
Right
Pump Gp - Piston (Hydraulic Fan) NOTE B B-3
FWD
Pump Gp - Piston (with Pilot Gear Pump) NOTE B B-2
Swivel Gp NOTE B E-4
Valve Gp - Check (Oil Cooler Bypass) (Control Valve) NOTE B A-7
Valve Gp - Load Control (Stick Drift Red, Line Relief) NOTE B D-5
Valve Gp - Main Control NOTE B C-1
Valve Gp - Pilot (Joystick, LH) NOTE B C-7
Valve Gp - Pilot (Joystick, RH) NOTE B C-6
Valve Gp - Pilot (Travel) NOTE B D-7
Valve Gp - Pressure Reducing (Boom Priority) NOTE B A-6
Valve Gp - Pressure Reducing (Boom Up Priority) (Stick-In Priority) NOTE B B-6
Valve Gp - Pressure Reducing (Boom, Swing Priority) NOTE B B-4
Valve Gp - Shuttle
NOTE B B-6
NOTE B B-4
Valve Gp - Solenoid (Heavy Lift) NOTE B A-4
Valve Gp - Travel Counterbalance
NOTE B
E-5
E-3
10
11
12
13
14
15
16
17
Block 185-0488 D-2
Plate 199-2012 E-1
Valve Gp - Manual (Boom Lower) 270-5692 E-2
Valve Gp - Check
(EC1) 297-0371 E-1
(EC2) 297-0370 E-1
Valve Gp - Flow Control (Boom Float, Pilot Oil) 201-9236 E1
Valve Gp - Load Control
(Boom Lowering, Drift Reduction, Relief)
E-3
263-1962
Left
Right E-2
Valve Gp - Solenoid 185-0472 D-1
1
8
2
3
4
5
6
7
9
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
38
39
Note A: Refer to Parts Manual for your specific machine.
Note B: Part numbers are located on the main Hydraulic System Schematic according to the effectivity of your specific machine.
Component Locations
Standard 330D/336D/336D MHPU with Heavy Lift and Fine Swing
Attachment
Tap Locations
Pressure, Sampling, and Sensor
Tap
Number
Description
Schematic
Location
AA Pilot Filter Pressure Test Port
BLCV: Boom Lowering Control Valve
A-4
BB Drive Pump Pressure Test Port B-2
CC Power Shift Pressure Test Port A-2
DD Idler Pump Pressure Test Port A-2
SOS Hydraulic O
il Sampling Port A-4
MACHINE COMPONENT LOCATIONS
LINES GP - BLCV
ACCUMULATOR
MOTOR GP - SWING AND SWIVEL
LINES GP - BOOM FLOAT
PUMP GP - PISTON (MAIN)
19
37
24
10
23 14
15
16
CC
12
8
13
SOS
AA
BB DD
11
6
7
234
24
30
29
28
3415
27269
25
3517
18
19 37
1416
3921
3820
23
22
1051
33
36
3231
6
7
5
9
234
8
FWD
Valve Gp - Swing CushionWithout Fine Swing
158-9085 37 F-6
Valve Gp - Swing Cushion With Fine Swing
158-9090 37 E-5
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
DRAIN / RETURN LINE
HYDRAULIC CIRCUIT COLOR DESCRIPTIONS
IMPLEMENT AND LEFT TRAVEL PUMP OUTPUT
IMPLEMENT AND RIGHT TRAVEL PUMP OUTPUT
POWER SHIFT CONTROL CIRCUIT
PILOT PUMP OUTPUT
ATTACHMENT CONTROL CIRCUIT
HYDRAULIC FAN PUMP OUTPUT
SUPPLY LINE
BUCKET CONTROL AND CYLINDER CIRCUIT
RIGHT TRAVEL CONTROL AND MOTOR CIRCUIT
TRAVEL SPEED CONTROL CIRCUIT
STICK CONTROL AND CYLINDER CIRCUIT
BOOM CONTROL AND CYLINDER CIRCUIT
SWING BRAKE CONTROL CIRCUIT
HEAVY LIFT CONTROL CIRCUIT
LEFT TRAVEL CONTROL AND MOTOR CIRCUIT
SWING CONTROL AND MOTOR CIRCUIT
RENR9459-04
24 Page, (Dimensions: 34 inches x 28 inches)
THIS SCHEMATIC IS FOR THE 330D AND 336D
EXCAVATOR AND 336D MHPU HYDRAULIC SYSTEM
ATTACHMENT: SMART BOOM (BOOM FLOAT)
MEDIA NUMBER: RENR9459-04
PART NUMBER: 259-7699, CHANGE: 00, 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
TRAVEL(L)
TRAVEL(R)
VALVE GP
PILOT (TRAVEL)
T1 T5
BACKFWDBACK 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
Pp3
Pp3
T1
A
B
AB
STICK
CYLINDER
BOOM
CYLINDERS
BUCKET
CYLINDER
P2 Pi1
P1
DR1
DR2
DR3
DR4
DR5
DR6
P-IN PSA1PSA2
T-OUT1
T-OUT2
Pi2
Di2 Pi2 Pi3 Di3 DST
bR2
Di1
T
AL4
aL4
SPi
SDr
SP3
Di4 Pi4 Pi1
BP3 BP2
R3aR5
AR2
BR2
aR2
SWING MOTOR
P1
P2
T
A1
A2
B1
B2
aL3
MOTOR GP
SWING
VALVE GP
SWING CUSHION
WITH FINE SWING
158-9090
MOTOR GP
TRAVEL
VALVE GP
TRAVEL COUNTERBALANCE
MOTOR GP
TRAVEL
VALVE GP
TRAVEL
COUNTERBALANCE
SWIVEL GP
BLOCK GP
185-0488
VALVE GP
LOAD CONTROL
(STICK DRIFT/RED
LINE RELIEF)
VALVE GP
MAIN CONTROL
VALVE GP
CHECK
(OIL COOLER BYPASS)
FILTER GP
OIL (RETURN)
FILTER GP
OIL (CASE DRAIN)
VALVE GP
SHUTTLE
MANIFOLD GP
CONTROL (PILOT)
FILTER AND
VALVE GP
PILOT
JRP
JRT
VALVE GP - PILOT
(JOYSTICK, LH)
VALVE GP - PILOT
(JOYSTICK, RH)
ACCUMULATOR GP
bR5
IN
OUT
T
TT
TP
PG PC
PAC
RETURN CHECK VALVE
Pi5
VALVE GP
SOLENOID
(HEAVY
LIFT)
VALVE GP
PRESSURE
REDUCING
(BOOM, SWING
PRIORITY)
T2
T2
D
EF
G
SP2
AG
AGBG
BG
A1
P
T
T
B1 A1 B2 A2
P1 P2
VALVE GP - PRESSURE REDUCING
(BOOM UP/STICK IN PRIORITY)
VALVE GP - PRESSURE REDUCING
(BOOM PRIORITY)
AR5
BR5
P
A
T
PG
DR
BG
AG
B
A
Pi1
Ps2
Pi2
D1
Ps1
S1
S
B
Dr1
LEFT
PUMP
PILOT
HYDRAULIC FAN
IDLER
RIGHT
PUMP
PRESSURE SENSOR
(IDLER PUMP)
PRESSURE SENSOR
(DRIVE PUMP)
DRIVE
Psv
a4
a1
a3
L
a2
PUMP GP
PISTON
a5
L1
PUMP GP
PISTON
(HYDRAULIC FAN)
M1
M2
A4
D0
MOTOR GP
PISTON (FAN)
VALVE GP
SHUTTLE
aL1 bL1 bR1 aR1
AL3
BL3
AR3
BR3
AL2BL2
aR3-a aR4-a bR3 bR4 bL3-a bL2 bL4 aL2
bL3 bL2 bL1
bR1
bR3 bR4
BL3
NO.1
(TRAVEL)
NO.2
(SWING)
NO.3
(LOCK)
bL4
AR1BR1AL1BL1
R.C.V.-C
R.C.V.-B
R.C.V.-A
R.C.V.-A R.C.V.-B
R.C.V.-C
PRPL
PL
PR
HR
HR
HL
HL
bL3aR3
aR3-a bL3-a
DR
A1
B1
DR
DR1
L2L3
AB
STICK (2)
BOOM (1)
ATCH
BUCKET
TRAVEL (R)
TRAVEL (L)
SWING
STICK(1)
BOOM(2)
(UP)
(OUT)
(IN)
(R)
(L) (BACK)
(FWD)
(BACK)
(OPEN)
(CLOSE)
(UP)
(DOWN)
(OUT)
(IN)
BT
BP1
BR4
SP1 ST
BL3 R1R2
PROPORTIONAL
REDUCING VALVE
HYDRAULIC TANK
SLOW
RETURN BYPASS
DD
CC
BB
AA
SOS
SOL
Pi1
SOL
aR4-a
aR4
VALVE GP
CHECK (EC2)
297-0370
VALVE GP
CHECK (EC1)
297-0371
VALVE GP
FLOW CONTROL
(BOOM FLOAT,
PILOT OIL)
201-9236
VALVE GP
SOLENOID
185-0472
VALVE GP - LOAD CONTROL
(BOOM LOWERING, DRIFT REDUCTION, RELIEF)
263-1962
VALVE GP - LOAD CONTROL
(BOOM LOWERING, DRIFT REDUCTION, RELIEF)
263-1962
PLATE
199-2012
VALVE GP
MANUAL
(BOOM LOWER)
270-5692
A
B
Dr
Dr
A
B
A
P
T
A
B
CYL
LEFT VALVE
RIGHT VALVE
CV Pi T
Dr
X
X
CYL
CV Pi T
Dr
X
X
R.C.V..
VALVE GP
SWING CUSHION
WITHOUT FINE SWING
158-9085
B
A
BL2 AL2
DR
A1
B1
AL3
BL2
AL2
aL2
BL1
AL1
aL1
AR1
aR1
BR1
aR3
AR3
BR3
Pi1
aR4
