Cat 318 [PDF]

Zitiervorschau

RENR6681 May 2002

FLUID POWER SYMBOLS BASIC COMPONENT SYMBOLS MAIN

PUMP OR MOTOR

FLUID CONDITIONER

SPRING

CONTROL VALVES

VARIABILITY

SPRING (ADJUSTABLE)

LINE RESTRICTION (VARIABLE)

PRESSURE COMPENSATION

LINE RESTRICTION (FIXED)

HYDRAULIC PNEUMATIC ENERGY TRIANGLES

TWO POSITION

PUMP (VARIABLE & PRESSURE COMPENSATED)

LINE RESTRICTION (VARIABLE & PRESSURE COMPENSATED)

ATTACHMENT

VALVE PORTS

THREE POSITION

TWO - WAY

THREE - WAY

CONTROL VALVES AB

AUX

PUMP (2 - SECTION)

VALVES

VALVE ENVELOPES

ONE POSITION

RESTRICTION

FOUR - WAY

CHECK VALVES

A B

P T

P T

NORMAL POSITION

SHIFTED POSITION

BASIC SYMBOL

INFINITE POSITION

SPRING LOADED

SHUTTLE

PILOT CONTROLLED

FLUID STORAGE RESERVOIRS

318C Excavator Hydraulic System - Attachment

PRESSURIZED

VENTED

RETURN ABOVE FLUID LEVEL

RETURN BELOW FLUID LEVEL

ROTATING SHAFTS

MEASUREMENT

PRESSURE

TEMPERATURE

FLOW

GPA1-UP MDY1-UP

UNIDIRECTIONAL

BIDIRECTIONAL

COMBINATION CONTROLS

SOLENOID

SOLENOID OR MANUAL

SOLENOID & PILOT

SOLENOID & PILOT OR MANUAL

SERVO

THERMAL

DETENT

MANUAL CONTROL SYMBOLS

MANUAL SHUTOFF

PUSH - PULL LEVER

GENERAL MANUAL

EXTERNAL RETURN

INTERNAL RETURN

GAS CHARGED

SIMPLIFIED

LINES CROSSING

COMPLETE

VARIABLE DISPLACEMENT NON-COMPENSATED

FIXED DISPLACEMENT

SINGLE ACTING

LINES JOINING

UNIDIRECTIONAL

BIDIRECTIONAL

BIDIRECTIONAL

INFINITE POSITIONING

System 15: Two-Way/One Pump/Joystick Switches

3 POSITION

FLOW IN ONE DIRECTION

PARALLEL FLOW

CROSS FLOW

2 POSITION

FLOW IN EITHER DIRECTION

Printed in U.S.A.

ELECTRICAL SYMBOLS TABLE HYDRAULIC SYMBOLS (ELECTRICAL)

G TRANSDUCER (GAS / AIR)

GENERATOR

ELECTRIC MOTOR

PRESSURE SWITCH

PRESSURE SWITCH (ADJUSTABLE)

TEMPERATURE SWITCH

ELECTRICAL WIRE

ELECTRICAL SYMBOLS (ELECTRICAL)

T

PRESSURE SWITCH

TEMPERATURE SWITCH

LEVEL SWITCH

FLOW SWITCH

WIRE NUMBER IDENTIFICATION CODES ELECTRICAL SCHEMATIC EXAMPLE

HYDRAULIC SCHEMATIC EXAMPLE

CURRENT STANDARD

CURRENT STANDARD

HARNESS IDENTIFICATION CODE THIS EXAMPLE INDICATES WIRE 135 IN HARNESS “AG” WIRE CIRCUIT NUMBER IDENTIFICATION

325-AG135 PK-14

CIRCUIT NUMBER IDENTIFICATION

WIRE COLOR

WIRE COLOR

WIRE GAUGE

325-PK

PREVIOUS STANDARD WIRE

WIRE COLOR

B

325-PK-14

CIRCUIT NUMBER IDENTIFICATION

WIRE GAUGE

A

(EXAMPLE VALVE)

16 Page,

TRANSDUCER (FLUID)

(Dimensions: 34 inches x 24 inches)

M

RENR6681

© 2002 Caterpillar, All Rights Reserved

DOUBLE ACTING

INTERNAL PASSAGEWAYS

VARIABLE DISPLACEMENT NON-COMPENSATED

UNIDIRECTIONAL

INTERNAL SUPPLY PRESSURE

HYDRAULIC & PNEUMATIC CYLINDERS

HYDRAULIC MOTORS

HYDRAULIC PUMPS

SPRING

REMOTE SUPPLY PRESSURE

CROSSING & JOINING LINES

ACCUMULATORS

FIXED DISPLACEMENT

PEDAL

PILOT CONTROL SYMBOLS

RELEASED PRESSURE

SPRING LOADED

PUSH BUTTON

1

SWING MOTOR

TRAVEL MOTOR (RIGHT)

TRAVEL MOTOR (LEFT)

2

HIGH PRESS.LINE PG DR MU Pp3

1

Pp3 T

T

BOOM CYLINDER

BUCKET CYLINDER

A2

A1

BOOM CYLINDER

STICK CYLINDER T

P B1

B2

B

A

A

B

B

A

SWIVEL

BP2

TRAVEL(R)

TRAVEL(L)

SPi

BPi

SP2

SDr

BDr

BP3

SP3 SP1 T

AL4 aL4

ST R2

BL3

BL2

aL3

AL3

aL2

(IN)

(RAISE)

BR5

Di4

BL1

AL2

Pi4

aL1

aR1

AL1

BR1

AR1 aR2

BR2

AR2

BR3

aR3 (CLOSE)

(REV)

AR3

Pi1

aR4

AR4

(LOWER)

BP1 BR4

AR5

BT R1

aR5 R3

(REV)

(L)

(IN)

PB4 DB4

PB2

DB2 DB1

DB6 PD6

PB1 BUCKET STICK

BOOM

SWING

(Dimensions: 34 inches x 24 inches)

16 Page,

RENR6681

HL

bL4

SWING

STICK (1)

UP

DOWN

OPEN

CLOSE

L

R

IN

OUT

BOOM(2)

Pi2

Di2

TRAVEL(L)

(R)

(OUT) bL3

Pi3

Di3

bL1

BUCKET

(FWD)

(FWD)

bL2

ATCH

TRAVEL(R) DST

PL

PR

bR2

bR1

STICK(2)

BOOM(1)

(OPEN)

(RAISE) bR4

bR3

(OUT) Di1

HR

bR5

2

A1

A2

A3

A4

A5

A6

A7

A8

B1

B2

B3

B4

C B5

B6

B7

B8

A2

A1

B1

DR

M2

FR

G2

U B2 Pn2

RR P2

P1

A2

Ps2 PsM2

P1

P2

Pi1 NO1 (TRAVEL)

A

PSA1

Pi2

S3

PSA2 NO3 (LOCK)

(SW PARKING)

G4

PAC

Dr2

S1

B

ATTACHMENT COMPONENTS

Dr1

C G3

D

G F

E

Item No.

Description

PsM1

1

Left Joystick (Push Button Controls)

Ps1

2

Line Relief Valve (Work Tool)

A1 DR1

DR2 DR3 DR4 DR5

DR6

PIN TOUT1

Pn1

TOUT2 OUT

IN A3

T

MAIN CONNECTOR LINE

Pi M1 G1

PILOT LINE

Pm

DRAIN LINE

THIS SCHEMATIC IS FOR THE 318C EXCAVATOR ATTACHMENT: TWO-WAY/ONE PUMP/JOYSTICK SWITCHES MEDIA NUMBER: RENR6681 PART NUMBER: 206-3328 Components are shown installed on a fully operable machine. Refer to the appropriate Service Manual for Troubleshooting, Specifications.