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
15 - Engine
33 - Connecting Rod
06 - Big-End Bearing
15 - 128
9813/6700-1
15 - 128
Check (Condition)
1. Check the bearing shell surfaces for signs of
damage and excessive wear.
2. Measure the crank pin diameters to confirm they
are within service limits, refer to Technical Data
(PIL 15-33).
3. Renew any parts that are worn or not within the
specified tolerances.
Remove and Install
Special Tools
Tool
Category
Description Part No.
Qty.
Special
Tool
Torque
Wrench
(10-100Nm)
993/70111
1
Before Removal
1. This procedure requires service parts. Make
sure you have obtained the correct service par