• Author / Uploaded
• chanlin

Citation preview

RENR7296-03 July 2007

FLUID POWER SYMBOLS BASIC COMPONENT SYMBOLS

Component Locations Part Number

Machine Location

Schematic Location

Accumulator Gp - Hydraulic (Charged)

164-6981

1

A-6

Cylinder Gp - Boom

NOTE A

2

F-3

Cylinder Gp - Bucket

NOTE A

3

F-3

Cylinder Gp - Stick

NOTE A

4

G-10

Filter & Valve Gp - Pilot (Hydraulic Oil)

158-8987

5

A-5

Filter Gp - Oil (Hydraulic Return)

188-4140

6

A-9

Filter Gp - Oil (Hydraulic, Case Drain)

126-2075

7

A-8

Manifold Gp - Control (Pilot Oil)

215-5037

8

B-8

Description

Motor Gp - Swing

158-8986

9

G-8

209-5992

10 11

G-6 G-5

Pump Gp - Piston (Main)

272-6955

12

B-3

Swivel Gp

234-4440

13

E-6

Valve Gp - Check (Oil Cooler Bypass)

201-9329

14

A-10

Valve Gp - Load Control (Boom Drift Red, Line Relief)

255-5683

15

D-3

Valve Gp - Load Control (Stick Drift Red, Line Relief)

255-5680

16

D-7

Valve Gp - Main Control

259-7464

17

D-3

Valve Gp - Pilot (Joystick, LH)

270-5951

18

D-10

Valve Gp - Pilot (Joystick, RH)

270-5952

19

D-9

Valve Gp - Pilot (Travel)

270-5947

20

E-10

Valve Gp - Pressure Reducing (Boom, Swing Priority)

232-4102

21

B-5

Valve Gp - Shuttle

185-0462 259-7732

22 23

C-10 B-5

Valve Gp - Swing Cushion

158-9085

24

F-8

204-2819

25 26

F-6 F-5

Motor Gp - Travel

Left Right

Valve Gp - Travel Counterbalance

Left Right

MAIN AUX.

PUMP or MOTOR

TWO POSITION

INFINITE POSITION

CC VENTED

320D & 320D L Excavator Hydraulic System

12

320D: A6F1-UP MCH1-UP FAL1-UP BZP1-UP CXY1-UP JFZ1-UP JGZ1-UP

RETURN ABOVE FLUID LEVEL

PRESSURIZED

Idler Pump Pressure Test Port

B-4

CC

Drive Pump Pressure Test Port

A-4

DD

Power Shift Pressure Test Port

A-2

SOS

Hydraulic Oil Sampling Port

A-5

PILOT CONTROLLED

RETURN BELOW FLUID LEVEL

MEASUREMENT

PRESSURE

ROTATING SHAFTS

FLOW

TEMPERATURE

UNIDIRECTIONAL

BIDIRECTIONAL

COMBINATION CONTROLS

320D L: MDE1-UP A8F1-UP A9F1-UP KGF1-UP MGG1-UP DHK1-UP PHX1-UP

SOLENOID or MANUAL

SOLENOID

SERVO

SOLENOID and PILOT or MANUAL

SOLENOID and PILOT

DETENT

THERMAL

MANUAL CONTROL SYMBOLS

PUSH-PULL LEVER

MANUAL SHUTOFF

GENERAL MANUAL

PUSH BUTTON

PILOT CONTROL SYMBOLS

RELEASED PRESSURE

INTERNAL RETURN

SPRING LOADED

Schematic Location

BB

SHUTTLE

SPRING LOADED

BASIC SYMBOL

FLUID STORAGE RESERVOIRS

LINES CROSSING

HYDRAULIC PUMPS

FIXED DISPLACEMENT

HYDRAULIC AND PNEUMATIC CYLINDERS

LINES JOINING

VARIABLE DISPLACEMENT NON-COMPENSATED

UNIDIRECTIONAL

UNIDIRECTIONAL

BIDIRECTIONAL

BIDIRECTIONAL

INTERNAL SUPPLY PRESSURE

COMPLETE

SINGLE ACTING

DOUBLE ACTING

INTERNAL PASSAGEWAYS

HYDRAULIC MOTORS

VARIABLE DISPLACEMENT NON-COMPENSATED

SPRING

REMOTE SUPPLY PRESSURE

CROSSING AND JOINING LINES

GAS CHARGED

FIXED DISPLACEMENT

PEDAL

SIMPLIFIED

ACCUMULATORS

A-5

FOUR-WAY

THREE-WAY

CHECK VALVES

P T SHIFTED POSITION

P T NORMAL POSITION

Tap Locations Pressure, Sampling, and Sensor

Pilot Filter Pressure Test Port

TWO-WAY

THREE POSITION

AB

EXTERNAL RETURN

AA

ATTACHMENT

LINE RESTRICTION VARIABLE and PRESSURE COMPENSATED

VALVE PORTS

CONTROL VALVES AB

PUMP GP - PISTON (MAIN)

Description

HYDRAULIC PNEUMATIC ENERGY TRIANGLES

BB ONE POSITION

Note A: Refer to Parts Manual for your specific machine.

Tap Number

PUMP: VARIABLE and PRESSURE COMPENSATED

2-SECTION PUMP

VALVES

VALVE ENVELOPES

DD

LINE RESTRICTION (FIXED)

RESTRICTION

PRESSURE COMPENSATION

LINE RESTRICTION (VARIABLE)

SPRING (ADJUSTABLE)

VARIABILITY

CONTROL VALVES

SPRING

FLUID CONDITIONER

FLOW IN ONE DIRECTION

TWO POSITION

THREE POSITION

INFINITE POSITIONING

PARALLEL FLOW

CROSS FLOW

FLOW ALLOWED IN EITHER DIRECTION

Printed in U.S.A.

© 2007 Caterpillar All Rights Reserved

17

Electrical Symbols Table Hydraulic Symbols (Electrical)

9 20

4

G

13 Transducer (Fluid)

Transducer (Gas / Air)

M

Generator

Electric Motor

24 6

2

16 21 23

3 15

13

14 15 17

Pressure Switch (Adjustable)

Pressure Switch

Electrical Wire

Temperature Switch

Electrical Symbols (Electrical)

16

VALVE GP - MAIN CONTROL

MOTOR GP - SWING & SWIVEL

T

Temperature Symbol

Pressure Symbol

7

8

6

25

Hydraulic Schematic Example Current Standard

Current Standard Harness identification code This example indicates wire 135 in harness "AG".

SOS

Flow Symbol

Wire Number Identification Codes

Electrical Schematic Example

7

Level Symbol

Wire Circuit Number Identification

1

Wire Color

325-AG135 PK-14 325-PK

10 25

12

11 26

5

9 24

Circuit Identification Number

10

Wire Color

Wire Gauge

Previous Standard

AA

Wire Color

Wire

325-PK-14 B Circuit Number Identification

5

MACHINE COMPONENT LOCATIONS

MOTOR GP - PISTON (TRAVEL)

FILTER GP

A

Wire Gauge (EXAMPLE VALVE)

(Dimensions: 34 inches x 24 inches)

19

16 Page,

18

RENR7296-03

22

10

9

8

7

TRAVEL MOTOR (RIGHT)

3

G

Pp3

AG

BL3 B1

VALVE GP TRAVEL COUNTERBALANCE 137-3718

Pp3

T1

T1

T2

T2

BG

BG

BUCKET CYLINDER

VALVE GP SWING CUSHION 158-9085

AG

AG

F

AR3 TRAVEL BRAKE

VALVE GP PILOT (TRAVEL) 270-5947

B

TRAVEL BRAKE

A

A

BL2 TRAVEL(L)

BL1

aL1

FWD

bR1

bL1

E

VALVE GP LOAD CONTROL (BOOM) 255-5683

aR1 AL3 BL3

SPi

BP3

SDr

aL2

SEE LOC A-10 VALVE GP PILOT (JOYSTICK, LH) 270-5951 JLT

OUT

aL3 (IN)

STICK DRIFT REDUCTION

(UP)

(L)

aR2 BR2 AR2

Pi4

Di4

aR4

AR3

(REV)

Pi1

BOOM DRIFT REDUCTION

BP1 BT

(DOWN)

(CLOSE)

(REV)

RCV-B

BR5

BUCKET

aR5 AR5

D

R3

VALVE GP MAIN CONTROL 259-7464

BOOM

OPEN JR4

CLOSE JR2

DOWN JR3

UP JR1

RCV: RETURN CHECK VALVE

MAIN RELIEF

A1

VALVE GP SHUTTLE 185-0462

A2

A3

A4

A5

A6

A7

A8

SWING

STICK(1) (OUT)

BOOM(2) HL

Di2

Pi2

Pi3

(R) Di3

bL3 HL B1

aR3

B2

aR4

B4

B3

bR3

B5

B6

B7

TRAVEL(L) (FWD)

bL1

bL2

C

bL4

DST

TRAVEL(R) (FWD) PL

PR

PL

bR2

bR1

PR

ATCH

Di1

bR3

bL3

bL2

bL4

aL2

G2

TRAVEL SPEED

SWING PRIORITY

NO.1 (TRAVEL)

P-IN

SEE LOC G-9 FILTER GP OIL (RETURN) 188-4140

RCV-C C

RCV-B B

A SEE LOC RCV-A D-8

A SLOW RETURN

MANIFOLD GP CONTROL (PILOT OIL) 215-5037

PSA2

DR1

RR

PSA1 T-OUT2

P1

DR3

DR4

Pi2

DR2

B1

DR5

T-OUT1

DR6

A1

B2

U

ACCUMULATOR GP 164-6981

P2

P1

PAC

G

OUT

VALVE GP SHUTTLE 259-7732

A2

T

A2

RETURN

E F D VALVE GP CHECK (OIL COOLER BYPASS) OIL COOLER 201-9329

FILTER GP OIL (CASE DRAIN) 126-2075

FILTER GP OIL (PILOT) 158-8987

AA

PC

BB

VALVE GP PRESSURE REDUCING (BOOM, SWING PRIORITY) 232-4102

PUMP GP PISTON (MAIN) 272-6955

8

7

6

5

Pn2 Ps2

B

Pressure Line

Dr2

Pilot / Load Sensing Pressure

I

PR A3 G1

Component Group

DrM PsM1

PILOT

A1

Drain / Return Lines

Dr1

D

Ps1

Attachment

HR

DD

Air Line

CALLOUTS YY

Pn1 Pi

PROPORTIONAL REDUCING VALVE

Taps (Pressure, Sampling, Sensor) by letter

1

Components by number

AA

Connections by letter

THIS SCHEMATIC IS FOR THE 320D & 320D L EXCAVATOR

M1

CC 4

BOOM CONTROL & BOOM CYLINDER CIRCUIT BUCKET CONTROL & BUCKET CYLINDER CIRCUIT STICK CONTROL & STICK CYLINDER CIRCUIT SHUTTLE VALVE CONTROL CIRCUIT COMBINED LEFT & RIGHT PUMP SIGNAL PRESSURE POWER SHIFT CONTROL CIRCUIT SWING BRAKE CONTROL CIRCUIT

LINE PATTERNS

S1

SOS

ATTACHMENT CONTROL CIRCUIT RIGHT TRAVEL CONTROL & RIGHT TRAVEL MOTOR CIRCUIT LEFT TRAVEL CONTROL & LEFT TRAVEL MOTOR CIRCUIT SWING CONTROL & SWING MOTOR CIRCUIT

HL

S3

IN

PG

DRAIN

9

TRAVEL SPEED CONTROL CIRCUIT SUPPLY LINE DRAIN / RETURN LINE

MEDIA #: RENR7296-03 PART #: 259-7469 HE 01

Pm

Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations

PRESSURE SENSOR

10

IMPLEMENT & RIGHT TRAVEL PUMP OUTPUT

HR

PsM2

T

BYPASS

IMPLEMENT & LEFT TRAVEL PUMP OUTPUT PILOT PUMP OUTPUT

HR

M2

FR

NO.3 (LOCK)

PRESSURE SWITCH

Pi1

NO.2 (SWING)

P2

SEE LOC D-2

LINES GROUP COLOR DESCRIPTIONS

B8

PL

B

bR5

bR4

PRESSURE SENSOR

bR4

STICK(2) (OUT)

BOOM(1) (UP)

BUCKET (OPEN)

RIGHT PUMP

16 Page, Color 2,

aL4

BR3

LEFT PUMP

RENR7296-03

T

ACTIVATION HYDRAULIC

(Dimensions: 34 inches x 24 inches)

JL1

L JL4

BL2

AL4

BR1

SEE LOC A-10

AR4

aR3

aR1

BL1

BR4 BP2

AR1

AL1

BDr BPi

JRT

JRP

R JL2

IN JL3

aL1

AL2

RCV-A

VALVE GP PILOT (JOYSTICK, RH) 270-5952

SWING

AR1

SWIVEL GP 234-4440

PRESSURE SWITCH

STICK

BR4

VALVE GP TRAVEL COUNTERBALANCE 137-3718

A

T3

SP3

JLP

AR4

BACK T6

T4

PRESSURE SWITCH

C

BR1

AL1

VALVE GP LOAD CONTROL (STICK) 255-5680

T2

BR3

AL2

E

D

B

B

TRAVEL(R)

FWD

BOOM CYLINDER

A1

DR

F

T5

1

MOTOR GP TRAVEL 209-5992

MU

BG

BACK T1

2

DR SEE LOC RCV-C A-10

AL3

TRAVEL MOTOR (LEFT)

4

MOTOR GP SWING 158-8986

PG

STICK CYLINDER

5

MOTOR GP TRAVEL 209-5992

SWING MOTOR

G

6

3

2

1

A