JCB HM Range Medium and Large Hydraulic Breakers Service Repair Manual SN1095001 onwards

HM Medium Breakers

1

HM Large Breakers

2

Service Manual HM Range Medium and Large Hydraulic Breakers, Serial Nos. 1095001 onwards PUBLISHED BY THE JCB ATTACHMENTS RIVERSIDE, RUGELEY STAFFORDSHIRE, WS15 2WA ENGLAND Tel. ROCESTER (01889) 572700 PRINTED IN ENGLAND Publication No. 9803/1420_02

Issue 2

Service Manual HM Range Medium and Large Hydraulic Breakers, Serial Nos. 1095001 onwards Section 1 Medium Breakers

Publication No.

9803/1420-02

World Class Customer Support Copyright Š 2004 JCB SERVICE. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any other means, electronic, mechanical, photocopying or otherwise, without prior permission from JCB SERVICE. Issued by JCB Technical Publications, JCB Service, World Parts Centre, Beamhurst, Uttoxeter, Staffordshire, ST14 5PA, England. Tel +44 1889 590312 Fax +44 1889 593377

Medium Breakers - Contents Chapter

i

Page

Introduction

1

Safety Regulation

1

General

1

Workshop Standards

1

Service Personnel

1

Layout of the Instructions

1

Symbols

2

List of Tools/Standard Tools

4

Charging Equipment

6

Disassemble Accumulator

7

Disassemble Piston

10

Assemble Bushing and Piston

14

Assemble Accumulator

18

Field Bushing Exchange

21

Charge Accumulator

23

Exploded Views

25

Appendix - Breaker Operating Principles

29

Technical Specifications

33

Nitrogen Adaptor Reference Chart

35

Tool Part Numbers

36

Breaker Part Number Matrix

37

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i

Medium Breakers - Introduction

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1

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1

Medium Breakers - Symbols

$IRECTION

)NSPECT AND REPLACE DAMAGED PARTS

.EW PART

4O BE AVOIDED

/KAY

&ORCE

4URNING TO END POSITION

/IL

'AS RELEASE

3CRAP

)MPORTANT POSITIONAL RELATIONSHIP

,OCTITE

2

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2

Medium Breakers - Symbols

#ONTACT SOUND

-INUTES

'REASE

.M

Frozen &REEZED

3

4ORQUE

9803/1420-01

/N THE EXCAVATOR

3

Medium Breakers - List of Tools/Standard Tools

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4

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4

Medium Breakers - List of Tools/Standard Tools

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+HOLFRLO WKUHDG LQVHUWV

)

5

9803/1420-01

5

Medium Breakers - Charging equipment

-&% 3DUW 1R

6

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6

Medium Breakers - Disassemble Accumulator

7!2.).'

("# E PS

4HE ACCUMULATOR IS PRESSURIZED EVEN WHEN THERE IS NO HYDRAULIC PRESSURE TO IT !TTEMPTING TO DISMANTLE THE ACCUMULATOR WITHOUT lRST RELEASING THE PRESSURE MAY CAUSE INJURY "EFORE DISMANTLING ACCUMULATOR MAKE SURE THAT THE GAS PRESSURE IS RELEASED COMPLETELY

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7

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9803/1420-01

7

Medium Breakers - Disassemble Accumulator

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8

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9803/1420-01

8

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