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SERVICE MANUAL

EXCAVATOR

JCB305, JS305

EN - 9813/6700 - ISSUE 1 - 12/2016

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

Copyright 6-09-02 © 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 JCB305

Page 1: ...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 machi...

Page 2: ...9813 6700 1 Notes Find manuals at https best manuals com...

Page 3: ...MANUAL Volume 1 JCB305 JS305 EN 9813 6700 SERVICE MANUAL Volume 2 JCB305 JS305 EN 9813 6700 SERVICE MANUAL Volume 3 JCB305 JS305 EN 9813 6700 SERVICE MANUAL Volume 4 JCB305 JS305 EN 9813 6700 Find ma...

Page 4: ...Notes 9813 6700 1 Find manuals at https best manuals com...

Page 5: ...al Safety 01 5 01 03 12 Maintenance Safety 01 6 01 03 18 Operating Safety 01 8 01 03 21 Worksite Safety 01 10 01 03 24 Risk Assessment 01 11 01 03 27 Maintenance Positions 01 12 01 06 About this Manua...

Page 6: ...2016 10 18 Acronyms Glossary ARV Auxiliary Relief Valve FEAD Front End Accessory Drive MRV Main Relief Valve PIL Parts Identification List PPE Personal Protective Equipment Find manuals at https best...

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 10 01 03 24 Risk Assessme...

Page 8: ...Notes 01 2 9813 6700 1 01 2 Find manuals at https best manuals com...

Page 9: ...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 time...

Page 10: ...ion 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 signal word N...

Page 11: ...are 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...

Page 12: ...er Hydraulic 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 Mak...

Page 13: ...f decomposition 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...

Page 14: ...r bystanders if they are inhaled Do not operate the machine in closed spaces without making sure there is good ventilation If possible install an exhaust extractor If you begin to feel drowsy stop the...

Page 15: ...s configuration by the user e g the fitting of large and non approved attachments may result in a restriction of the machine visibility Hands and Feet Keep your hands and feet inside the machine When...

Page 16: ...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 17: ...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 18: ...with the upper structure parallel to the undercarriage 2 If applicable lower the dozer blade 3 Lower the excavator so the dipper is flat on the ground Refer to Figure 2 Figure 2 4 Stop the engine 5 Re...

Page 19: ...01 Machine 06 About this Manual 01 13 9813 6700 1 01 13 06 About this Manual Contents Page No 01 06 06 Using the Manual 01 15...

Page 20: ...Notes 01 14 9813 6700 1 01 14...

Page 21: ...agnostic including Servicemaster Machine Variants Where information is different depending on machine variant the applicable information sets are included within the same PIL reference Headings are in...

Page 22: ...00 15 Parallel Open Centre System FF 1 33 33 88 Console Switch Slew Lock 30 39 00 Slew Motor FF 1 Travel service does not operate as expected 30 00 15 Parallel Open Centre System FF 1 27 00 06 Driveli...

Page 23: ...information is contained within another PIL reference a cross reference is provided The main systems information is contained in the manual as follows Table 5 System PIL Reference Heading Hydraulic S...

Page 24: ...01 Machine 09 Description 01 18 9813 6700 1 01 18 09 Description Contents Page No 01 09 12 Main Component Locations 01 19 01 09 15 Service Point Locations 01 20...

Page 25: ...mponent Locations Introduction Figure 3 A B C E D F G H J K L A Bucket B Bucket link C Dipper link D Bucket ram E Dipper F Dipper ram G Boom H Boom ram J Operators cab K Counterweight L Undercarriage...

Page 26: ...4 Upper structure B A D F E C J G H A Breather hydraulic tank B Cover suction strainer C Cover return filter D Excavator control valve block E Filter rockbreaker return line F Filter in line cushion...

Page 27: ...01 Machine 09 Description 15 Service Point Locations 01 21 9813 6700 1 01 21 Figure 5 Hydraulic compartment A B C A Servo filter element B In line drain filter element C Hydraulic oil level gauge...

Page 28: ...Figure 6 Upper structure A C D J F G E B H A Exhaust system B Engine oil level dip stick C Crankcase ventilation filter D FEAD Front End Accessory Drive belt E Engine oil filler port F Coolant expansi...

Page 29: ...00 1 01 23 Figure 7 Battery cooling compartment D E H B A C G F A Safety air filter element B Primary air filter element C Scavenge intake D Battery compartment E Cooling pack compartment F Fuel coole...

Page 30: ...01 Machine 09 Description 15 Service Point Locations 01 24 9813 6700 1 01 24 Figure 8 Hydraulic compartment B C A A Main fuel filter B Engine oil filter C Primary fuel filter...

Page 31: ...700 1 2016 10 06 03 Attachments Couplings and Load Handling Contents Page No Acronyms Glossary 03 2 03 00 Attachments 03 00 00 General 03 3 03 10 Excavator Arm Quickhitch 03 10 06 Hydraulic Quickhitch...

Page 32: ...9813 6700 1 2016 10 06 Acronyms Glossary LED Light Emitting Diode...

Page 33: ...03 Attachments Couplings and Load Handling 00 Attachments 03 1 9813 6700 1 03 1 00 Attachments Contents Page No 03 00 00 General 03 3...

Page 34: ...Notes 03 2 9813 6700 1 03 2...

Page 35: ...y the gradients 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...

Page 36: ...ad and unload on firm level ground Always be alert for possible hazards Take special care when turning or reversing DANGER Before lowering the attachments to the ground make sure that the machine and...

Page 37: ...03 Attachments Couplings and Load Handling 10 Excavator Arm Quickhitch 03 5 9813 6700 1 03 5 10 Excavator Arm Quickhitch Contents Page No 03 10 06 Hydraulic Quickhitch 03 7...

Page 38: ...Notes 03 6 9813 6700 1 03 6...

Page 39: ...ram 03 9 Introduction The hydraulic quickhitch is installed in place of a normal attachment at the dipper and tipping link A hydraulically operated latch mechanism enables quickhitch compatible attach...

Page 40: ...uickhitch relay energises The relay contacts close and power is connected to the quickhitch solenoid which energises The quickhitch latch cylinder moves to the unlatch position At the same time the qu...

Page 41: ...MARY FUSEBOX 1 2 SW3 ISOLATOR SWITCH GND1 S2 IGN SPLICE 11 12 FUSEBOX D 13 14 FUSEBOX A A F5 10A 5 10 S1 GND SPLICE 15 16 M6 M6 2000 16 00 mm BLACK 70 00 mm 3015 8 00 mm 3000 4 00 mm 3007A 4 00 mm 102...

Page 42: ...03 Attachments Couplings and Load Handling 10 Excavator Arm Quickhitch 06 Hydraulic Quickhitch 03 10 9813 6700 1 03 10 GND1 Ground...

Page 43: ...0 06 15 Excavator Arm 06 15 00 General 06 13 06 15 03 Boom 06 15 06 15 06 Dipper 06 19 06 15 15 Tipping Linkage 06 22 06 24 Slew Ring 06 24 00 General 06 27 06 24 03 Bearing 06 28 06 24 06 Gear 06 32...

Page 44: ...813 6700 1 2016 11 04 Acronyms Glossary DTI Dial Test Indicator FOGS Falling Object Guard System PIN Product Identification Number ROPS Roll Over Protective Structure TOPS Tip Over Protective Structur...

Page 45: ...e Panel and Cover 06 1 9813 6700 1 06 1 06 Moveable Panel and Cover Contents Page No 06 06 00 General 06 3 06 06 03 Battery 06 4 06 06 06 Engine Compartment 06 6 06 06 07 Cooling Compartment 06 8 06 0...

Page 46: ...Notes 06 2 9813 6700 1 06 2...

Page 47: ...Introduction When moved to their maintenance position the access panels give you access to parts or areas of the machine that are not required during machine operation Before you operate the machine...

Page 48: ...9813 6700 1 06 4 03 Battery Open and Close Open 1 Make the machine safe Refer to Safety Page 01 1 2 Use the ignition key to unlock the cover 3 Pull the handle to release the latch 4 Open the cover unt...

Page 49: ...Framework 06 Moveable Panel and Cover 03 Battery 06 5 9813 6700 1 06 5 Close 1 To release the latch pull it up 2 Close the cover 3 Make sure the cover is closed correctly 4 Use the ignition key to loc...

Page 50: ...mpartment Open and Close Open 1 Make the machine safe Refer to Safety Page 01 1 2 Use the ignition key to unlock the cover 3 Pull the handle to release the latch The cover opens automatically and is s...

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