RENR7306-01February 2009

365C ExcavatorHydraulic SystemELC1-UPMEM1-UPFEN1-UPMCS1-UPMCY1-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)

PRESSURECOMPENSATION

PUMP(VARIABLE & PRESSURE

COMPENSATED)

MEASUREMENT

PRESSURE TEMPERATURE FLOW

ROTATING SHAFTS

UNIDIRECTIONAL BIDIRECTIONAL

PUSH - PULL LEVER PEDALGENERAL MANUAL PUSH BUTTON SPRING

FIXEDDISPLACEMENT

VARIABLE DISPLACEMENTNON-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

BASICSYMBOL

SPRINGLOADED

CHECK VALVES

2 POSITIONINFINITE

POSITIONING

FLOW IN ONEDIRECTION

FLOW INEITHER

DIRECTION

3 POSITION

CROSSFLOW

PARALLELFLOW

INTERNAL PASSAGEWAYS

NORMAL POSITION

A B

P T

A B

P TSHIFTED POSITION INFINITE POSITION

CONTROL VALVES

ATTACHMENT

MANUAL SHUTOFF

SHUTTLE PILOTCONTROLLED

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 TRIANGLESHYDRAULIC PNEUMATIC

INTERNALSUPPLY PRESSURE

COMPLETE

FIXEDDISPLACEMENT

VARIABLE DISPLACEMENTNON-COMPENSATED

HYDRAULIC SYMBOLS (ELECTRICAL)

ELECTRICAL SYMBOLS TABLE

325-AG135 PK-14

HARNESS IDENTIFICATION CODE THIS EXAMPLEINDICATES WIRE 135 IN HARNESS “AG”

325-PK-14

WIRE GAUGE

WIRE COLOR

CIRCUIT NUMBERIDENTIFICATION

WIRE NUMBER IDENTIFICATION CODES

CURRENT STANDARD

PREVIOUS STANDARD

ELECTRICAL SCHEMATIC EXAMPLE HYDRAULIC SCHEMATIC EXAMPLE

325-PK

WIRE COLORCIRCUIT NUMBER

IDENTIFICATION

B

WIRE

WIRE

(EXAMPLE VALVE)

CURRENT STANDARD

TRANSDUCER(FLUID)

MELECTRIC MOTORTRANSDUCER

(GAS / AIR)

G

GENERATOR

PRESSURE SWITCH ELECTRICAL WIREPRESSURE SWITCH(ADJUSTABLE)

TEMPERATURESWITCH

PRESSURESWITCH

TEMPERATURESWITCH

LEVELSWITCH

FLOWSWITCH

ELECTRICAL SYMBOLS (ELECTRICAL)

A

CIRCUIT NUMBERIDENTIFICATION

WIRECOLOR

WIRE GAUGE

T

RE

NR

7306-0

12

4 P

ag

e,

(Dim

en

sio

ns

: 3

4 i

nc

he

s x

28

in

ch

es

)

MACHINE COMPONENT LOCATIONS

Description PartNumber

MachineLocation

SchematicLocation

Accumulator Gp 160-4138

Filter Gp - Oil - Oil (Return) - Case Drain - Oil (Return)

185-0336259-06816E-5534234-4454

Motor Gp - Piston (Hydraulic Fan) 225-4613

Motor Gp - RH Travel 147-5784Motor Gp - Swing (Front) 234-4525Motor Gp - Swing (Rear) 234-4527Pump - Gp - Piston (Main Hydraulic) 259-0782Pump Gp - Gear (Pilot) 155-9222Pump Gp - Piston (Fan Motor) 247-8968Pump Gp - Piston (Swing) 259-0783Sensor As - Pressure (Swing Pump) 221-8869

Swivel Gp 156-0622Valve Gp - Check (Return) 201-9381

201-9382Valve Gp - Control (Swing) 241-8928Valve Gp - Main Control 230-0081Valve Gp - Manifold & Reducing (Pilot Oil) 140-0736Valve Gp - Swing Cushion 116-3420

Valve Gp - Travel Counterbalance RH 143-8067

1

56789

1112131415161718

20212223242526

28

E-4

B-7B-7B-7B-7B-6

F-6F-3F-4

B-5, E-1B-4B-4B-3B-3

E-5C-2C-7E-4

D-2 thru D-7E-4, E-5

E-3

E-4, E-5

Component Locations

Sensor As - Pressure (Main Pump) 221-8869 19 B-5

Cylinder Gp - Boom Note A 2 F-6Cylinder Gp - Bucket Note A 3 F-7Cylinder Gp - Stick Note A 4 F-7

NOTE A: Check the parts manual for the correct cylinder part number.

Valve Gp - Travel Counterbalance LH 143-8067 27 E-3

Motor Gp - LH Travel 147-5784 10 F-5

2710

1128

1128

1027

6

92313

1220

251

22

1619

1518

57 8

1618

1517

19

914

75 6

1323

122620

125

822 24

21

24

21

2

2

4

3

2 4

3

261714

MAIN PUMP GP

PILOT MANIFOLD

SWING PUMP GP

AA

BB

CC

DD EE

HH

2514

14

19FF GG

17

Tap LocationsPressure, Sampling, and Sensor

TapNumber Description Schematic

LocationAA Pilot Pump Delivery Pressure E-4BB Front Pump Power Shift Pressure B-6CC Front Pump Load Sensing Pressure B-5DD Front Pump Delivery Pressure B-5EE Rear Pump Delivery Pressure B-5FF Rear Pump Load Sensing Pressure B-4GG Rear Pump Power Shift Pressure B-4HH Swing Pump Delivery Pressure C-3

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 TO TANK

HYDRAULIC CIRCUIT COLOR DESCRIPTIONSMAIN PUMP OUTPUT

SWING PUMP OUTPUT

PILOT PUMP OUTPUT

RIGHT HAND TRAVEL MOTOR CONTROL CIRCUIT

FAN PUMP OUTPUT

MAIN PUMP LOAD SENSE PRESSURE

SWING BRAKE CONTROL CIRCUITDRAIN / RETURN TO SUPPLY

MAIN PUMP LOAD SENSE CIRCUITSUPPLY LINE

BUCKET CONTROL CIRCUIT

TRAVEL SPEED CONTROL CIRCUIT

STICK CYLINDER CONTROL CIRCUITLEFT HAND TRAVEL MOTOR CONTROL CIRCUIT

BOOM CYLINDER CONTROL CIRCUIT

SWING MOTOR CONTROL CIRCUIT

RE

NR

7306-0

12

4 P

ag

e,

(Dim

en

sio

ns

: 3

4 i

nc

he

s x

28

in

ch

es

)

THIS SCHEMATIC IS FOR THE 365C EXCAVATORMEDIA NUMBER: RENR7306-01 PART NUMBER: 230-2751, CHANGE: 04, VERSION: HE HPC OFF, TRUE LOAD SIGNALPART NUMBER: 239-8660, CHANGE: 00, VERSION: HE HPC ON, DUPLICATED LOAD SIGNALComponents 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

X

Part #239-8660, HPC-ON, Duplicated Load Signal

Part #230-2751 CHG 03, HPC-OFF, True Load Signal

D1

PS2g

STICK CYLINDERBUCKET CYLINDER BOOM CYLINDER

SWING MOTOR - RIGHT SWING MOTOR - LEFT

LS2gLS2

PS2

M2

SA2P2

M2gM1gP1SA1M1

LS1g LS1

PS1

PS1g

R1 M1g' S1 M2g' D2 R2

PR

PD

PG1 PG2

DB

PB

M

B A

PA

M1 M2

SDr1

SP

T P SDr2

R

M

PAPB

PG DB

Pi6

Pi5 Pi4 Pi3

Pi2 Pi1

PS

A4

PS

A3

PS

A2

PS

A1

PAC

PG

DR

1

DR

2

DR

3

DR

4

DR

5

DR

6

PIN

TOU

T

Qmax Qmin

AS

R T1 T2

L1

L2

M1SDRDR1S

A

MG

Qmax QminQmax Qmin

L2

L3

DRDR1

A

B

AR3 BR3BL4AL4BL3 AL3

PF PR

BL1AL1 AR1

BR1

BL3 AL3 AR3

BR3

PF

PR

AL4

BL4 BR1 AR1 BL1 AL1

FWD

FWD

IN

RE

V

RE

V

OU

TS

TIC

K

TRA

VE

L(L)

TRA

VE

L(R

)

CLO

SE

UP

OP

EN

DO

WN

BO

OM

BU

CK

ET

ATC

H

LS

bL1bR1aL4

aL1aR1bL4

DR4DR5

R2

DR3

PS3

DR1aR3aL3aL2

bR3bL3bL2

R1

DR2

PS2

DR4PS4

BL2 AL2

X

T1

T2

BG

B A

AG

A

BBRL BR

A

B

T1

T2

BG

BA

AG

LS2gLS2

PS2

PS2g

M2

SA2P2

M2gM1g

P1SA1

M1LS1g LS1

PS1

PS1g

R1 D1 M1g' S1 M2g' D2 R2

Qmax QminQmax Qmin

PF PR

PF

PR

LS

DR1

TRAVEL MOTOR - LEFTTRAVEL MOTOR - RIGHT

MOTOR GPRH TRAVEL

147-5784

PUMP GPGEAR(PILOT)155-9222

PUMP GPSWING259-0783

SWIVEL GP156-0622

MOTOR GPLH TRAVEL147-5784

VALVE GPRH TRAVEL

COUNTERBALANCE143-8067

VALVE GPLH TRAVELCOUNTERBALANCE143-8067

MOTOR GPSWING (REAR)234-4527

MOTOR GPSWING (FRONT)234-4525

VALVE GPSWING CUSHION116-3420

VALVE GPCONTROL(SWING)241-8928

PUMP GPFAN MOTOR247-8968

SENSOR ASPRESSURE(SWING PUMP)221-8869

PUMP GPPISTON

(MAIN HYDRAULIC)259-0782

SENSOR ASPRESSURE(MAIN PUMP)221-8869

MOTOR GPPISTON(HYDRAULIC FAN)225-4613

FILTER GPCASE DRAIN6E-5534

FILTER GPOIL (RETURN)234-4454

FILTER GPOIL (RETURN)259-0681

HHFILTER GPOIL185-0336

VALVE GPCHECK(RETURN)201-9382

VALVE GPMANIFOLD AND REDUCING

(PILOT OIL)140-0736

ACCUMULATOR GP160-4138

VALVE GPMAIN CONTROL230-0081

VALVE GPCHECK(RETURN)201-9381

AA

DD EE

BB

CC FF

GG