CAT 330C Excavators Hydraulic System (Attachment)Hydraulic Variable Undercarriage Schematic Manual

RENR5338 June 2002

330C Excavators Hydraulic System (Attachment) Hydraulic Variable Gage Undercarriage CAP1-UP JNK1-UP

This attachment schematic is to be used in conjunction with the Standard Schematic in this Service Manual. © 2002 Caterpillar All Rights Reserved

Printed in U.S.A.

Hydraulic Schematic 216-2805 This Attachment Schematic is intended to be used in conjunction with the Standard Hydraulic Schematic in this Service Manual.

MAIN CONNECTOR LINE PILOT LINE DRAIN LINE

1

X

X T2 T1

PR

T2 T1

1

D

C

B

A

A

B

A

B

1

2

BP2 SPi

2

BPi

SP2

SDr

TRAVEL(R)

TRAVEL(L)

BDr

BP3

SP3 SP1 T

AL4 aL4

3

BL3

R2

ST

BL2

aL3

AL3

(RAISE)

BL1

AL2

aL2

(IN)

aL1

BR5

Di4

Pi4

aR1

AL1

AR1 aR2

BR2 AR2

BR3

aR3

AR3

(CLOSE)

(REV)

(REV)

(L)

BR1

aR4

AR4

Pi1

(LOWER)

AR5

BT R1

BP1 BR4

2

4

1

3

aR5 R3

(IN)

R1

3 T1 T2

STICK

SWING

BUCKET

BOOM P2 STICK (1)

UP

DOWN

OPEN

CLOSE

L

R

IN

OUT

BOOM(2) HL

bL4

Di2

Pi2

SWING

TRAVEL(L)

(R)

(OUT) bL3

Pi3

Di3

TRAVEL(R)

bL1

bL2

ATCH

(FWD)

(FWD) DST

PL

PR

BUCKET

bR1

bR2

STICK(2)

BOOM(1)

(OPEN)

(RAISE) bR4

bR3

P1

(OUT) Di1

HR

bR5

STANDARD COMPONENTS Item No.

A1

B1

A2

B2

A3

B3

A4

B4

A5

C B5

A6

B6

A7

B7

1 2 3

A8

Component

Variable Gage Cylinder Ball Valve Pressure Reducing Valve

B8

A2

B1

A4

A1

S4 B2 P2

P1

R1

R1

A3

M4 P1 P2

Pi1

Pi2

NO1 (TRAVEL)

(SW PARKING)

PSA1

PSA2 NO3 (LOCK)

PAC

X2 M2

A

B

A2 J2

S C

G

D F

E

M1 DR1 DR2 DR3 DR4 DR5 DR6

TOUT

PIN

OUT

A1 J1 M3

IN

T

X1 R2

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