RENR9990
February 2009
UltraHigh Demolition
330D UHD Excavator
Hydraulic System - Attachment
THJ1-UP
Printed in U.S.A.© 2009 Caterpillar, All Rights Reserved
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
RENR9990
30 Page, (Dimensions: 39 inches x 28 inches)
MAIN PUMP
MACHINE COMPONENT LOCATIONS
39
46
55
31
45
65 66
13
22
44
42
29
56
34
59
35
60
15
63
30
18
50 51
111028
52
62
65
44
27
11
50
58
57
61
55
35
22 28 29
42 56
43
64 52
63
54
39
41 53
33 45
66
VIEW C
TILT CAB CONTROL VALVE GROUP
VIEW B
RIGHT SIDE VIEW
NEGATIVE FLOW & WORK TOOL VALVE GROUP
LL
MM
GG
HH
KK
JJ
B
17 54
8
45
23
20
25
26
16
14
7
38
19
37
61
57
27
58
49
19 7 13 15
40
46
49
51 62
27
26
10
32
32
31
Description
Part
Number
Machine
Location
Schematic
Location
1 D-1
4 D-2
Accumulator Gp - Pilot Manifold Note B 34 A-6
Block Note B 35 B-4, B-8
Cylinder Gp - Boom Note A 36 E-4
Cylinder Gp - Stick Note A 38 F-4
Filter Gp - Case Drain Note B 39 A-7
Filter Gp - Pilot Hydraulic Note B 40 A-6
Filter Gp - Return Oil Note B 41 A-8
Manifold Gp - Control Note B 42 A-7
Motor Gp -
Swing Note B 43 F-8
Motor Gp - Left Travel Note B 44 F-6
Motor Gp - Right Travel Note B 45 F-6
Pump Gp - Main Hydraulic Note B 46 A-5
Sensor As - Left Pump Pressure Note B 47 A-5
Sensor As - Right Pump Pressure Note B 48 A-5
Switch As - LH Travel Pressure Note B 49 C-8
Switch As - Pilot Pressure Note B 50 A-8
Switch As - RH Travel Pressure Note B 51 C-8
Swivel Gp Note B 52 F-6
Tank Gp - Hydraulic Oil Note B 53 A-7
Valve Gp - Cooler Bypass Note B 55 F-8
Valve Gp - Heavy Lift
Solenoid Note B 56 A-6
Valve Gp - LH Joystick (Stick/Swing) Note B 57 A-8
Valve Gp - Pilot Travel Note B 58 D-8
Valve Gp - Pressure Reducing Boom/Swing Note B 59 A-6
Valve Gp - RH Joystick (Boom/Bucket) Note B 61 A-8
Valve Gp - Shuttle Note B 62 A-8
Valve Gp - Swing Cushion Note B 64 F-8
Note A: Refer to parts manual for specific cylinder information.
Component Locations
Attachment - UHD
Standard 330D
Note B: Part numbers are located on the main Hydraulic System Schematic according to
the effectivity of the machine.
Valve Gp - Travel LT Counterbalance Note B 65 F-6
Valve Gp - Travel RT Counterbalance Note B 66 F-6
Coupling Gp - Hydraulic Block (Boom Nose Lines) 217-3024
Fitting Gp - Hydraulic (Quick Disconnect Male) 261-2733
Cylinder Gp - Bucket Note A 37 F-4
2 D-1Coupling Gp - Hydraulic Block (Boom Nose Lines) 217-3025
3 D-1, F-4Fitting Gp - Hydraulic (Quick Disconnect Male) 261-2732
5 F-4
16 F-2
Fitting Gp - Hydraulic (Quick Disconnect Female) 261-2734
Valve Gp - Control (Cab Tilt, Rotator) 310-7149
6 E-1, E-2Fitting Gp - Hydraulic (Quick Disconnect Female) 261-2735
15 B-7, B-8Valve Gp - Control Auxiliary 259-7378
17 D-3
20 F-1
Valve Gp - Flow Control (Boom Float - Pilot Oil) 201-9236
Valve Gp - Load Control (Fore Boom Cylinder) 263-1962
18 E-3, E-4Valve Gp - Load Control (Boom Cylinder) 263-1962
19 F-1Valve Gp - Load Control (Cab Tilt) 179-2123
21 F-3Valve Gp - Load Control (Stick Cylinder) 263-1962
23 F-8
26 F-8
Valve Gp - Manual Shutoff 271-2707
Valve Gp - Manual (Auxiliary Shutoff LH) 277-0954
24 F-8Valve Gp - Manual Shutoff 271-2708
25 F-8Valve Gp - Manual (Auxiliary Shutoff RH) 292-7752
27 B-8Valve Gp - Pilot 158-8280
7 D-4Switch As - Pressure (Boom Float) 309-5769
8 D-3Switch As - Pressure (Boom Lower) 224-0744
12 F-4Valve Gp - Check 202-6281
13 E-1, E-3Valve Gp - Check 233-7881
Description
Part
Number
Machine
Location
Schematic
Location
Component Locations
28 E-7Valve Gp - Shuttle 8J-6875
31 B-3Valve Gp - Solenoid (Negative Flow) 171-0188
29 D-3Valve Gp - Solenoid (Boom Float - Pilot Oil) 185-0472
32 B-4Valve Gp - Solenoid (Tilt Cab Control) 259-7430
30 D-3Valve Gp - Solenoid (Boom Float Up) 297-0371
9 E-7Switch As - Pressure (Work Tool Free Rotate) 266-5881
Tap Locations
Pressure, Sampling, and Sensor
Tap
Number
Description
Schematic
Location
DD A-5
EE Medium Pressure Tap B2 B-4
FF Medium Pressure Tap B1 B-4
GG Attachment Extend Tap B4 C-4
HH Attachment Retract Tap B3 C-4
JJ Auxiliary Extend Tap B2 C-4
KK Auxiliary Retract Tap B1 C-3
LL Left Pump Negative Flow Signal Pressure B-3
AA A-6
BB A-5
CC A-5
Pilot Pump Delivery Pressure
Left Pump Delivery Pressure
Power Shift Pump Pressure
Right Pump Delivery Pressure
MM Right Pump Negative Flow Signal Pressure B-3
SOS Hydraulic Oil Sampling Port A-6
EE FF
EE
FF
31
33
46
Valve Gp - Pressure Reducing Bucket/Stick Note B 60 A-7
10 F-1Valve - Shutoff (Cab Lowering Manual) 232-7226
11 F-1Valve - Shutoff (Cab Lowering Manual) 226-9860
14 D-3Valve Gp - Check (Boom Float Load Control) 297-0370
33 C-3, C-4Valve Gp - Solenoid (Work Tool 4 Function) 259-7429
Valve Gp - Check (1-Way / 2-Way Flow) Note B 54 E-7
Valve Gp - Sol & Relief (1-Way / 2-Way Flow) Note B 63 E-7
22 B-4 thru B-8Valve Gp - Main Control 285-1345
14
16
912
6
24
3
33
41
48
32
40
47
43
64
36
12
21
53
34
59
17
60
31
47 48
32
30
CC
AA
SOS
BB
DD
46
40
39
41
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
RIGHT MAIN PUMP OUTPUT
LEFT MAIN PUMP OUTPUT
LEFT & RIGHT MAIN PUMP POWERSHIFT CIRCUIT
PILOT PUMP OUTPUT
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
FORE BOOM CONTROL CIRCUIT
LEFT TRAVEL MOTOR CONTROL CIRCUIT
SWING MOTOR CONTROL CIRCUIT
SWING BRAKE CONTROL CIRCUIT
HEAVY LIFT CONTROL CIRCUIT
TILT CAB CONTROL CIRCUIT
TOOL ROTATOR CONTROL CIRCUIT
RENR9990
30 Page, (Dimensions: 39 inches x 28 inches)
THIS SCHEMATIC IS FOR THE 330D EXCAVATOR
ATTACHMENT: ULTRAHIGH DEMOLITION
MEDIA NUMBER: RENR9990
PART NUMBER: 284-7452, CHANGE: 03, VERSION: V
Components are shown installed on a fully operable machine.
Refer to the appropriate Service Manual for Troubleshooting, Specifications.
12345678
A
B
C
D
E
F
12345678
A
B
C
D
E
F
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
SP3
Di4
Pi4
Pi1
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
IN
OUT
bR5
P
A
T
Pi5
TT
TP
T
PG
PC
P
A1A2A3A4
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
VALVE GP
CHECK
(1-WAY / 2-WAY FLOW)
(ECV)
E
PG
DR
MU
BG
AG
B
A
D
P1
P2
B1
B2
A1
A2
T
A1
P
T
Pi1
Ps2
Pi2
D1
Ps1
S1
S
B
Dr1
Psv
a4
a1
a3
L
a2
a5
L1
M1
M2
A4
D0
BL3
FA2 FB2
VALVE GP
VALVE GP
SOLENOID & RELIEF
(1-WAY / 2-WAY FLOW)
(ERV2)
VALVE AS
SHUTTLE
8J-6875
SWITCH AS
PRESSURE
(WORK TOOL FREE ROTATE)
266-5881
NOTE A
VALVE GP
285-1345
VALVE GP
BP3
BP2
BP1
BT
R1
A1
A2
A3
A4
A5 A6
A7 A8
B1
B2
B3
B4
B5
B6
B7
B8
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
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-C
R.C.V-B
R.C.V-A
PL PR
PR
PL
HL
HR
HR
HL
μμμμ
μμμμμμμμ
DR
A1
B1
aR3-a bL3-a
aR3 bL3
DR
DR1
L2
L3
A
B
B
A
DR
B
A
DR
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
BR4
R2
F2
B
A
DR
P
T
1
23
P1
A1A2 B2 B1
T1
T2
P2
Pi1SOL
A
P
T
Pi1
Pa2
Pb2
Pb2
Pa2
aR3-a bR3 bR4 bL3-a bL4
aL2
bL2
BL1
AL1
BR1
AR1
BUCKET CYLINDER
BOOM
CYLINDER
BOOM
CYLINDER
T
Pi
CV
Dr
CYL
X
CV
Dr
CYL
Pi
X
T
STICK CYLINDER
CYL
CV
T
Pi
Dr
CYL
CV
T
Pi
Dr
VALVE GP
CHECK
202-6281
TOOL ROTATOR
TILT CAB CYLINDER
FORE-BOOM CYLINDER
VALVE GP
219-7876
NOTE B
VALVE
SHUTOFF
(CAB LOWERING MANUAL)
232-7226
VALVE GP
FLOW CONTROL
(BOOM FLOAT - PILOT OIL)
201-9236
VALVE GP
SOLENOID
(BOOM FLOAT UP)
297-0371
VALVE GP
CHECK
(BOOM FLOAT LOAD CONTROL)
297-0370
FITTING GP
HYDRAULIC
(QUICK DISCONNECT FEMALE)
261-2734
COUPLING GP
HYDRAULIC BLOCK
(BOOM NOSE LINES)
217-3024
FITTING GP
HYDRAULIC
(QUICK DISCONNECT MALE)
261-2732
FITTING GP
HYDRAULIC
(QUICK DISCONNECT MALE)
261-2733
FITTING GP
HYDRAULIC
(QUICK DISCONNECT FEMALE)
261-2735
Dr
A
AR3
BR3
AR4
BR4
AB
C1
C2
M1
M2
V1 V2
A
B
A
B
aR4
B
A
DR
B
A
DR
A
B
A
P
T
T-OUT2
SOL
Pb2
A
B
C
D
M
LS
T
P
Pb
Pa
aL3
VALVE GP
MANUAL SHUTOFF
271-2708
VALVE GP
MANUAL SHUTOFF
271-2707
VALVE GP
MANUAL SHUTOFF
271-2708
VALVE GP
MANUAL SHUTOFF
271-2707
VALVE GP
NEGATIVE
FLOW CONTROL
171-0188
VALVE GP
CONTROL
AUXILIARY
259-7378
MOTOR GP
TRAVEL LEFT
MOTOR GP
TRAVEL RIGHT
MOTOR GP
SWING
FILTER GP
PILOT
HYDRAULIC
ACCUMULATOR GP
FILTER GP
RETURN OIL
TANK GP
HYDRAULIC
OIL
VALVE GP
PRESS
REDUCING
BOOM/SWING
MANIFOLD GP
CONTROL
FILTER GP
CASE DRAIN
VALVE GP
LH JOYSTICK
SWITCH AS.
RH TRAVEL
PRESSURE
SWITCH AS.
LH TRAVEL
PRESSURE
SWITCH AS.
PILOT PRESS
VALVE GP
COOLER BYPASS
VALVE GP
SHUTTLE
SENSOR
AS RIGHT
PUMP
PRESSURE
SENSOR
AS LEFT
PUMP
PRESSURE
VALVE GP
SWING
CUSHION
VALVE GP
TRAVEL LT
COUNTERBALANCE
SWIVEL GP
VALVE GP
TRAVEL RT
COUNTERBALANCE
PUMP GP
MAIN HYD.
VALVE GP
PILOT TRAVEL
VALVE GP
RH JOYSTICK
VALVE GP
TILT CAB CONTROL
259-7430
VALVE GP
PILOT
VALVE GP
CONTROL
AUXILIARY
259-7378
VALVE GP
HEAVY LIFT
VALVE GP
SOLENOID
NOTE C
VALVE GP
LOAD CONTROL
(BOOM CYLINDER)
263-1962
VALVE GP
LOAD CONTROL
(BOOM CYLINDER)
263-1962
VALVE GP
CHECK
233-7881
VALVE GP
LOAD CONTROL
(STICK CYLINDER)
263-1962
VALVE GP
LOAD CONTROL
(CAB TILT)
179-2123
VALVE GP
CHECK
233-7881
VALVE GP
LOAD CONTROL
(FORE BOOM CYLINDER)
263-1962
VALVE GP
CONTROL
(CAB TILT
ROTATOR)
310-7149
VALVE GP
SOLENOID
(WORK TOOL 4 FUNCTION)
259-7429
VALVE GP
PRESS
REDUCING
BUCKET/STICK
SWITCH AS
PRESSURE
(BOOM FLOAT)
309-5769
SWITCH AS
PRESSURE
(BOOM LOWER)
224-0744
VALVE GP
MANUAL
(AUXILIARY SHUTOFF LH)
277-0954
VALVE GP
MANUAL
(AUXILIARY SHUTOFF RH)
292-7752
LL
MM
GG HH JJ KK
EE FF
BB
CC
DD
AA
SOS
COUPLING GP
HYDRAULIC BLOCK
(BOOM NOSE LINES)
217-3025
FITTING GP
HYDRAULIC
(QUICK DISCONNECT MALE)
261-2732
FITTING GP
HYDRAULIC
(QUICK DISCONNECT FEMALE)
261-2735
VALVE GP
CHECK
(1-WAY / 2-WAY FLOW)
(ECV2)
VALVE GP
SOLENOID & RELIEF
(1-WAY / 2-WAY FLOW)
(ERV1)
VALVE GP
CHECK
(1-WAY / 2-WAY FLOW)
(ECV1)
VALVE GP
SOLENOID
(BOOM FLOAT - PILOT OIL)
185-0472
VALVE
SHUTOFF
(CAB LOWERING MANUAL)
226-9860
NOTE A: FREE ROTATE PRESSURE SWITCH
(89.6-107 BARS)
NOTE B: FREE ROTATE VALVE ACTUATED BY PRESSURE SWITCH
(UHD FRONT PARTS)
SEE SCHEMATIC ELEC. 284-7453 FOR FURTHER DETAILS
ABOUT BOOM RECOGNITION
NOTE C: STICK IN SELECTION VALVE 1/2 PUMP (ON IN UHD)
NOTE D: HYDRAULIC SCHEMATIC SHOWS MACHINE IN UHD CONFIGURATION.
VALVES SHOWN IN NEUTRAL POSITION.
FOR INFORMATION ABOUT MACHINE IN RETROFIT CONFIGURATION,
SEE STD HYDRAULIC SCHEMATIC + BLCV + SB + COMB + SLCV + MP.
