INTERACTIVE SCHEMATIC

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Bookmarks X

EC-C3EC-C2 E-C60

EC-C1

E-C61

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Hydraulic System330C Excavator

©2003 Caterpillar, All Rights Reserved Printed in U.S.A.

RENR 7168June 2003

CAP1-UPCGZ1-UPJCD1-UPMKM1-UPJNK1-UP

COMPONENT LOCATION

Description PartNumber

MachineLocation

SchematicLocation

Accumulator Gp 087-4456 1 B-5

Cooler Gp - Oil 204-0971 2 A-6

Cylinder Gp - Boom 192-6894 3 E-3

Cylinder Gp - Bucket 115-8693 4 E-3

Cylinder Gp - Stick 192-6910 5 E-7

Drive Gp - Pump (View from Shaft End) 191-5612 6 A-3

Filter Gp - Drain 158-8987 7 A-4

Filter Gp - Pilot 158-8987 8 A-4

Filter Gp - Return 188-4140 9 A-5

Manifold Gp - Pilot Oil Control 215-5037 10 A-5

Motor Gp - Fan (Hydraulic Oil Cooler) 191-5611 11 A-6

Motor Gp - Left Travel 271-6376 12 E-5

Motor Gp - Right Travel 271-6376 13 E-4

Motor Gp - Swing 200-3373 14 E-6

Pump Gp - Gear (Fan Motor) 194-8384 15 B-3

Pump Gp - Idler (View from Shaft End) 099-2978 16 A-3

Pump Gp - Pilot 197-2309 17 A-3

Sensor As - Pressure (Drive Pump) 221-8859 18 A-2

Sensor As - Pressure (Idler Pump) 221-8859 19 A-2

Switch As - Pressure 1 175-3244 20 C-7

Switch As - Pressure 2 175-3244 21 C-7

Switch As - Pressure 3 175-3244 22 B-7

Swivel Gp 159-7841 23 D-4

Tank Gp - Hydraulic 192-6845 24 A-4

Valve Gp - Attachment Control 171-0146 25 C-4

Valve Gp - Boom Control I 264-9963 26 C-3

Valve Gp - Boom Control II 264-9963 27 C-6

Valve Gp - Boom Drift Reduction 158-8118 28 D-2

Valve Gp - Bypass Check 204-2804 29 A-6

Valve Gp - Left Travel 226-4095 30 C-5

Valve Gp - Left Travel Brake 204-2819 31 D-5

Valve Gp - Main Control 212-7960 32 C-4

Valve Gp - Main Relief 261-2445 33 C-4

Valve Gp - Pilot Control (Boom and Bucket) 206-3303 34 C-7

Valve Gp - Pilot Control (Swing and Stick) 206-3304 35 C-7

Valve Gp - Pilot Relief 215-4909 36 A-4

Valve Gp - Pilot Travel 158-8250 37 C-7

Valve Gp - Power Shift Proportional Reducing 114-0616 38 B-2

Valve Gp - Reducing (Boom/Swing Priority Mode) 232-4102 39 B-4

Valve Gp - Relief (Fan Pump) 206-3354 40 B-3

Valve Gp - Right Travel 226-4095 41 C-4

Valve Gp - Right Travel Brake 204-2819 42 D-4

Valve Gp - Slow Return Check 190-7745 43 A-6

Valve Gp - Solenoid (Fine Swing) 116-3526 44 D-6

Valve Gp - Solenoid (Hydraulic Activation) 121-1491 45 A-5

Valve Gp - Stick Control I 264-9962 46 C-5

Valve Gp - Stick Control II 264-9962 47 C-2

Valve Gp - Stick Drift Reduction 158-8161 48 D-5

Valve Gp - Swing Control 153-5295 49 C-5

Valve Gp - Swing Parking Brake Solenoid 121-1491 50 A-5

Valve Gp -Travel Speed Solenoid 121-1491 51 A-5

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 RESTRICTIONVARIABLE and PRESSURE

COMPENSATED

PRESSURECOMPENSATION

PUMP: VARIABLE andPRESSURE COMPENSATED

ENERGY TRIANGLESHYDRAULIC PNEUMATIC

MEASUREMENT

PRESSURE TEMPERATURE FLOW

ROTATING SHAFTS

UNIDIRECTIONAL BIDIRECTIONAL

PUSH-PULL LEVER PEDALGENERAL MANUAL PUSH BUTTON SPRING

MANUAL CONTROL SYMBOLS

HYDRAULIC MOTORS

FIXEDDISPLACEMENT

VARIABLE DISPLACEMENTNON-COMPENSATED

UNIDIRECTIONAL

BIDIRECTIONAL

HYDRAULIC PUMPS

FLUID STORAGE RESERVOIRS

CROSSING AND JOINING LINES

VALVE ENVELOPES VALVE PORTS

BASIC COMPONENT SYMBOLS

FLUID CONDITIONERPUMP or MOTOR

FIXEDDISPLACEMENT

VARIABLE DISPLACEMENTNON-COMPENSATED

UNIDIRECTIONAL

BIDIRECTIONAL

VALVES

PILOT CONTROL SYMBOLSRELEASED PRESSURE

EXTERNAL RETURN INTERNAL RETURN

REMOTE SUPPLY PRESSURE

SIMPLIFIED COMPLETE INTERNALSUPPLY PRESSURE

ACCUMULATORS

SPRING LOADED GAS CHARGED

SOLENOIDor MANUAL

SOLENOIDand PILOT

SOLENOID and PILOT or MANUAL

COMBINATION CONTROLS

SOLENOID SERVO THERMAL DETENT

HYDRAULIC AND PNEUMATIC CYLINDERS

DOUBLE ACTINGSINGLE ACTING

BASICSYMBOL

SPRINGLOADED

CHECK VALVES

TWOPOSITION

INFINITEPOSITIONING

FLOW IN ONEDIRECTION

FLOW ALLOWED INEITHER DIRECTION

THREEPOSITION

CROSSFLOW

PARALLELFLOW

INTERNAL PASSAGEWAYS

NORMAL POSITION

A B

P T

A B

P TSHIFTED POSITION INFINITE POSITION

CONTROL VALVES

ATTACHMENT

MANUAL SHUTOFF

SHUTTLE PILOTCONTROLLED

ELECTRICAL SYMBOLSHydraulic Symbols (Electrical)

325-AG135 PK-14

Circuit IdentificationNumber

Wire Color Wire Gauge

Harness identification codeThis example indicateswire 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 ColorCircuit Number Identification

B A

Wire

Wire

(EXAMPLE VALVE)

Current Standard

Transducer(Fluid)

Transducer(Gas / Air)

G

Generator

Electrical WirePressure Switch

MElectric Motor

Pressure Switch (Adjustable)

Temperature Switch

PressureSymbol

TemperatureSymbol

LevelSymbol

FlowSymbol

Electrical Symbols (Electrical)

T

Components are shown installed on a fully operable machine with the key and engine off, transmission shifterin neutral and with parking brake set.Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations.

SCHEMATIC PART NUMBER: 215-4897, CHANGE: 07, VERSION: HEMEDIA NUMBER: RENR 7168THIS SCHEMATIC IS FOR THE 330C EXCAVATOR HYDRAULIC SYSTEM

A

B

C

D

E

1234567

A

B

C

D

E

1234567

LINE PATTERNS

Drain / Return Lines

Component Group

Pilot / Load Sensing Pressure

Pressure Line

CALLOUTS

Taps (Pressure, Sampling, Sensor - by letter)YY

(52) VALVE GP - CONTROL138-1234

Callout Number(Machine Location from

Component LocationsTable)

ComponentName

Part Number

IN

T

OUT

BDr

Pi2A3

M1

M2

J2

J1

R3

A2

A1

M3

X2

X1

R2

S

S4A4

T2

B A

T1

T2

T1

A B

X X

TOUTPIN

PACPi1P2P1 PSA2

DR6DR5

PSA1

DR4DR3DR2DR1D

C

BA

G

F E

BP1 BTT

P1P2

B2

A2 B1

B8B7B6C B5B4B3B2B1

A8A7A6A5A4A3A2A1

SDr

STSP1

SP2

Pi3 Di3 DST PRPL

AR4R1BR4

AR3BR3AR2BR2

SPi

SP3

AR1BR1

BR5Di4

Pi4

AL1

bL3

AR5AL4

BL1

CLO

SE

AL2

OP

EN

A1

R3BL2

BPi

AL3

DO

WN

R2

BP3

LR

R4

BP2

X3

bR4

aR5Pi1aR4

bR5HR

Di1

aR3

bR3

aR2

bR2

aR1

bR1

aL1

bL1HL

aL2

bL2bL4 Pi2

aL4

Di2

IN UP

R1

OU

T

M4

BL3aL3

4

B A

D

C

PR

(5) CYLINDER GP - STICK192-6910

(14) MOTOR GP - SWING200-3373

(12) MOTOR GPLEFT TRAVEL

271-6376

(31) VALVE GPLEFT TRAVEL

BRAKE204-2819

(44) VALVE GPSOLENOID (FINE SWING)116-3526

(23) SWIVEL GP159-7841

(13) MOTOR GPRIGHT TRAVEL271-6376

(42) VALVE GPRIGHT TRAVELBRAKE204-2819

(4) CYLINDER GP - BUCKET 115-8693

(3) CYLINDER GP - BOOM192-6894

(28) VALVE GPBOOM DRIFT REDUCTION158-8118

(32) VALVE GPMAIN CONTROL

212-7960

(48) VALVE GPSTICK DRIFTREDUCTION158-8161

(37) VALVE GPPILOT TRAVEL

158-8250

(20) SWITCH ASPRESSURE 1175-3244

(21) SWITCH ASPRESSURE 2175-3244

(34) VALVE GPPILOTCONTROL(BOOM ANDBUCKET)206-3303

(35) VALVE GPPILOT CONTROL(SWING AND STICK)206-3304

(22) SWITCH ASPRESSURE 3

175-3244

(27) VALVE GPBOOMCONTROL II264-9963

(46) VALVE GPSTICK

CONTROL I 264-9962

(49) VALVE GPSWING

CONTROL153-5295

(30) VALVE GPLEFT TRAVEL226-4095

(41) VALVE GPRIGHT TRAVEL

226-4095

(33) VALVE GPMAIN RELIEF261-2445

(25) VALVE GPATTACHMENTCONTROL171-0146

(26) VALVE GPBOOM

CONTROL I264-9963

(47) VALVE GPSTICK

CONTROL II264-9962

(15) PUMP GPGEAR(FAN MOTOR)194-8384

(38) VALVE GPPOWER SHIFTPROPORTIONAL REDUCING114-0616

(18) SENSOR ASPRESSURE (DRIVE PUMP)221-8859

(19) SENSOR ASPRESSURE (IDLER PUMP)221-8859

(17) PUMP GPPILOT

197-2309

(16) PUMP GPIDLER (VIEW FROM SHAFT END)099-2978

(6) DRIVE GPPUMP (VIEW FROM SHAFT END)191-5612

(40) VALVE GPRELIEF(FAN PUMP)206-3354

(39) VALVE GPREDUCING

(BOOM/SWING PRIORITY MODE)232-4102

(8) FILTER GPPILOT

158-8987

(36) VALVE GPPILOT RELIEF

215-4909

(7) FILTER GPDRAIN

158-8987

(24) TANK GPHYDRAULIC

192-6845

(1) ACCUMULATOR GP087-4456

(45) VALVE GPSOLENOID

(HYDRAULIC ACTIVATION)121-1491

(9) FILTER GPRETURN188-4140

(50) VALVE GPSWING PARKING BRAKE SOLENOID

121-1491

(51) VALVE GPTRAVEL SPEED SOLENOID

121-1491(10) MANIFOLD GP

PILOT OIL CONTROL215-5037

(43) VALVE GPSLOW RETURN CHECK

190-7745

(29) VALVE GPBYPASS CHECK

204-2804

(2) COOLER GPOIL

204-0971

(11) MOTOR GPFAN (HYDRAULIC OIL COOLER)

191-5611

MACHINE COMPONENT LOCATIONS

49

47

46

42

41

33

32

31

30

27

26

25

23

1716

14

1312

37

24

910 8 76

5

4

3

2

1

MAIN CONTROL VALVE

33

47

29

26 25 41 30 49 46 27

PILOT OIL MANIFOLD

51

45

50