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SERVICE MANUAL

COMPACT EXCAVATOR

45Z-1, 48Z-1, 51R-1

EN - 9813/6400 - ISSUE 2 - 07/2018

This manual contains original instructions, verified by
the manufacturer (or their authorized representative).

Copyright 2018 © 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.

www.jcb.com

Foreword

The Operator's Manual

You and others can be killed or seriously injured

if  you  operate  or  maintain  the  machine  without

first  studying  the  Operator's  Manual.  You  must

understand  and  follow  the  instructions  in  the

Operator's  Manual.  If  you  do  not  understand

anything,  ask  your  employer  or  JCB  dealer  to

explain it.

Do not operate the machine without an Operator's

Manual, or if there is anything on the machine you

do not understand.

Treat the Operator's Manual as part of the machine.

Keep  it  clean  and  in  good  condition.  Replace  the

Operator's Manual immediately if it is lost, damaged

or becomes unreadable.

Contents

01 - Machine
03  -  Attachments,  Couplings  and  Load

Handling
06 - Body and Framework
09 - Operator Station
12  -  Heating,  Ventilating  and  Air-

Conditioning (HVAC)
15 - Engine
18 - Fuel and Exhaust System
21 - Cooling System
27 - Driveline
30 - Hydraulic System
33 - Electrical System
72 - Fasteners and Fixings
75 - Consumable Products
78 - After Sales

Summary of Contents for 45Z-1

Page 1: ...dying the Operator s Manual You must understand and follow the instructions in the Operator s Manual If you do not understand anything ask your employer or JCB dealer to explain it Do not operate the...

Page 2: ...9813 6400 2 Notes Find manuals at https best manuals com...

Page 3: ...lume 1 45Z 1 48Z 1 51R 1 EN 9813 6400 SERVICE MANUAL Volume 2 45Z 1 48Z 1 51R 1 EN 9813 6400 SERVICE MANUAL Volume 3 45Z 1 48Z 1 51R 1 EN 9813 6400 SERVICE MANUAL Volume 4 45Z 1 48Z 1 51R 1 EN 9813 64...

Page 4: ...Notes 9813 6400 2 Find manuals at https best manuals com...

Page 5: ...12 Maintenance Safety 01 6 01 03 18 Operating Safety 01 8 01 03 21 Worksite Safety 01 11 01 03 24 Risk Assessment 01 12 01 03 27 Maintenance Positions 01 13 01 06 About this Manual 01 06 03 Model and...

Page 6: ...9813 6400 2 2018 05 25 Acronyms Glossary PIL Parts Identification List Find manuals at https best manuals com...

Page 7: ...y Yours and Others 01 3 01 03 06 Safety Warnings 01 4 01 03 09 General Safety 01 5 01 03 12 Maintenance Safety 01 6 01 03 18 Operating Safety 01 8 01 03 21 Worksite Safety 01 11 01 03 24 Risk Assessme...

Page 8: ...Notes 01 2 9813 6400 2 01 2 Find manuals at https best manuals com...

Page 9: ...ial hazards and how to avoid them If you do not fully understand the warning messages ask your employer or JCB dealer to explain them Safety is not just a matter of responding to the warnings All the...

Page 10: ...dous situation which if not avoided could result in death or serious injury The signal word CAUTION indicates a hazardous situation which if not avoided could result in minor or moderate injury The si...

Page 11: ...e of medicines which can cause drowsiness Feeling Unwell Do not attempt to operate the machine if you are feeling unwell By doing so you could be a danger to yourself and those you work with Mobile Ph...

Page 12: ...lic Pressure Hydraulic fluid at system pressure can injure you Before connecting or removing any hydraulic hose residual hydraulic pressure trapped in the service hose line must be vented Make sure th...

Page 13: ...composition e g charring is found refer to the next paragraph for safety instructions Do not touch component or surrounding area Used fluoroelastomeric components subjected to temperatures greater tha...

Page 14: ...ses Machine exhaust gases can harm and possibly kill you or bystanders if they are inhaled Do not operate the machine in closed spaces without making sure there is good ventilation If possible install...

Page 15: ...ur lights to improve visibility Keep the road lights windows mirrors and cameras clean when fitted Do not operate the machine if you cannot see clearly Modification of the machine s configuration by t...

Page 16: ...ating Safety 01 10 9813 6400 2 01 10 has passed Do not attempt to mount or enter the machine If the machine is struck by lightning do not use the machine until it has been checked for damage and malfu...

Page 17: ...leak is suspected contact the local gas company immediately and warn all personnel on the site Ban smoking make sure that all naked lights are extinguished and switch off any engines which may be runn...

Page 18: ...nd is there sufficient fuel to complete the job if applicable The Load How heavy is it Is it within the capabilities of the machine How bulky is it The greater the surface area the more affected it wi...

Page 19: ...he excavator arm Excavator Arm Lowered 1 Park the machine on solid level ground 1 1 Release the two track levers 1 2 Push the hand throttle lever to the idle position 2 Lower the dozer Refer to Figure...

Page 20: ...on solid level ground To prevent anyone starting the engine remove the ignition key Disconnect the battery by means of the battery isolator if installed when you are not using electrical power If you...

Page 21: ...01 Machine 06 About this Manual 01 15 9813 6400 2 01 15 06 About this Manual Contents Page No 01 06 03 Model and Serial Number 01 17 01 06 06 Using the Manual 01 18...

Page 22: ...Notes 01 16 9813 6400 2 01 16...

Page 23: ...d Serial Number 01 17 9813 6400 2 01 17 03 Model and Serial Number Introduction This manual provides information for the following model s in the JCB machine range Model From To 45Z 1 2683176 2683220...

Page 24: ...information is for which variant Make sure you use the correct information Diagnostics Information in this manual can help you diagnose machine faults Before attempting to diagnose possible faults ch...

Page 25: ...01 Machine 09 Description 01 19 9813 6400 2 01 19 09 Description Contents Page No 01 09 12 Main Component Locations 01 21 01 09 15 Service Point Locations 01 22...

Page 26: ...Notes 01 20 9813 6400 2 01 20...

Page 27: ...21 9813 6400 2 01 21 12 Main Component Locations Component Identification Figure 3 A B C D E F G A Dipper part of the excavator arm B Boom part of the excavator arm C Cab contains the operator station...

Page 28: ...owing illustrations identify the service points for the operator to perform the daily and weekly maintenance tasks Hydraulic Compartment Figure 4 A B C D J G H E F A Air filter B Radiator C Hydraulic...

Page 29: ...01 Machine 09 Description 15 Service Point Locations 01 23 9813 6400 2 01 23 Engine Compartment Figure 5 C D A B A Coolant expansion bottle B Washer bottle C Engine fuel filter D Engine oil dipstick...

Page 30: ...Notes 01 24 9813 6400 2 01 24...

Page 31: ...Contents Page No Acronyms Glossary 03 2 03 00 Attachments 03 00 00 General 03 3 03 10 Excavator End Quickhitch 03 10 00 General 03 7 03 10 06 Hydraulic Quickhitch 03 8 03 27 Bucket 03 27 00 General 03...

Page 32: ...9813 6400 2 2018 02 07 Acronyms Glossary PMV Pressure Maintenance Valve...

Page 33: ...03 Attachments Couplings and Load Handling 00 Attachments 03 1 9813 6400 2 03 1 00 Attachments Contents Page No 03 00 00 General 03 3...

Page 34: ...Notes 03 2 9813 6400 2 03 2...

Page 35: ...ients on which it is safe to operate or the safe distance from power lines Practice using attachments off the job before working with them for the first time JCB attachments are designed and manufactu...

Page 36: ...t covered in the Operator s Manual do not install it use it or remove it until you have obtained read and understood the pertinent information Install attachments only on the machines for which they w...

Page 37: ...03 Attachments Couplings and Load Handling 10 Excavator End Quickhitch 03 5 9813 6400 2 03 5 10 Excavator End Quickhitch Contents Page No 03 10 00 General 03 7 03 10 06 Hydraulic Quickhitch 03 8...

Page 38: ...Notes 03 6 9813 6400 2 03 6...

Page 39: ...change of buckets and attachments on the machine Quickhitches do not normally have a specific function themselves in that they do not carry out handling or digging operations but when installed on a...

Page 40: ...uickhitch 03 8 9813 6400 2 03 8 06 Hydraulic Quickhitch Technical Data 03 8 Diagram 03 9 Technical Data Table 3 Quickhitch Hydraulic Pressure Low Pressure Quick hitch 32 bar High Pressure Quick hitch...

Page 41: ...hitch 06 Hydraulic Quickhitch 03 9 9813 6400 2 03 9 Diagram Figure 6 Low Pressure Quickhitch 1 2 3 1 PMV Pressure Maintenance Valve 2 Quickhitch valve 3 Quickhitch Figure 7 High Pressure Quickhitch 1...

Page 42: ...03 Attachments Couplings and Load Handling 27 Bucket 03 10 9813 6400 2 03 10 27 Bucket Contents Page No 03 27 00 General 03 11 03 27 90 Teeth 03 14...

Page 43: ...ion A bucket can be installed on many different types of excavating machines The bucket can be directly mounted on to an excavator arm assembly or mounted to the excavator arm via a quickhitch assembl...

Page 44: ...mised then select a smaller bucket or reposition the machine Remove and Install CAUTION Stand clear and to one side of the bucket while you remove the pivot pins With the pins removed the bucket could...

Page 45: ...se a suitable lifting device to position the bucket flat on level ground 2 Reverse the machine while aligning the dipper end with the bucket tipping lever 3 Carefully operate the excavator controls to...

Page 46: ...0 2 03 14 90 Teeth Introduction 03 14 Remove and Install 03 15 Introduction Excavator buckets generally have teeth protruding from the cutting edge to disrupt hard material and avoid wear and tear of...

Page 47: ...fe Refer to PIL 01 03 2 Put the bucket flat on level ground 3 Stop the engine 4 Remove the ignition key 5 Discharge the hydraulic pressure Refer to PIL 30 00 00 6 Remove the nut and bolt 7 Remove the...

Page 48: ...03 Attachments Couplings and Load Handling 48 Rockbreaker 03 16 9813 6400 2 03 16 48 Rockbreaker Contents Page No 03 48 00 General 03 17...

Page 49: ...y 03 18 Remove and Install 03 18 Introduction A hydraulic rockbreaker also called hammer breaker pecker hoe ram or hoe rammer is a powerful attachment installed to the excavator for demolishing concre...

Page 50: ...rs could be killed or seriously injured Remove and Install To prevent premature wear failure and breakage the Quickhitch assembly must be used with a rockbreaker for short periods only If the machine...

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