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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Medium Breakers - Introduction
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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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Medium Breakers - Symbols
#ONTACT SOUND
-INUTES
'REASE
.M
Frozen &REEZED
3
4ORQUE
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/N THE EXCAVATOR
3
Medium Breakers - List of Tools/Standard Tools
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4
Medium Breakers - List of Tools/Standard Tools
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5
Medium Breakers - Charging equipment
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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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Medium Breakers - Disassemble Accumulator
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