jcb Groundhog 6x4 User manual

Copyright © 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.
World Class
Customer Support
9803-9390-2
Publication No.
Issued by JCB Technical Publications, JCB Aftermarket Training, Woodseat, Rocester, Staffordshire, ST14 5BW, England. Tel [phone] Fax [phone]
Service Manual
Groundhog 6x4
Section 1 - General Information
Section 2 - Care and Safety
Section 3 - Routine Maintenance
Section A - Optional Equipment
Section B - Body and Framework
Section C - Electrics
Section D - Controls
Section E - Hydraulics
Section F - Transmission
Section G - Brakes
Section H - Steering
Section K - Engine
Section S - Suspension

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Copyright © 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.
World Class
Customer Support
9803-9390-2
Publication No.
Issued by JCB Technical Publications, JCB Aftermarket Training, Woodseat, Rocester, Staffordshire, ST14 5BW, England. Tel [phone] Fax [phone]
Section 1
General Information
Section 1 - General Information
Section 2 - Care and Safety
Section 3 - Routine Maintenance
Section A - Optional Equipment
Section B - Body and Framework
Section C - Electrics
Section D - Controls
Section E - Hydraulics
Section F - Transmission
Section G - Brakes
Section H - Steering
Section K - Engine
Section S - Suspension

Section 1 - General Information
1-0 1-0
9803-9390-2
Notes:

Page No.Contents
Section 1 - General Information
1-i 1-i
Introduction
About this Publication ................................................................................ 1-1
Machine Identification
Identifying Your Machine ........................................................................... 1-3
Torque Settings
Zinc Plated Fasteners and Dacromet Fasteners ....................................... 1-5
Hydraulic Connections ............................................................................... 1-9
Service Tools
Numerical List .......................................................................................... 1-13
Consumables
Sealing and Retaining Compounds ......................................................... 1-15

Page No.Contents
Section 1 - General Information
1-ii 1-ii

Section 1 - General Information
1-1 1-1
9803/9390-2
Introduction
About this Publication
This publication is designed for the benefit of JCB
Distributor Service Engineers who are receiving, or have
received, training by JCB Technical Training Department.
These personnel should have a sound knowledge of
workshop practice, safety procedures, and general
techniques associated with the maintenance and repair of
hydraulic earthmoving equipment.
Renewal of oil seals, gaskets, etc., and any component
showing obvious signs of wear or damage is expected as
a matter of course. It is expected that components will be
cleaned and lubricated where appropriate, and that any
opened hose or pipe connections will be blanked to
prevent excessive loss of hydraulic fluid and ingress of dirt.
Finally, please remember above all else SAFETY MUST
COME FIRST!
The manual is compiled in sections, the first three are
numbered and contain information as follows:
1General Information - includes torque settings and
service tools.
2Care & Safety - includes warnings and cautions
pertinent to aspects of workshop procedures etc.
3Routine Maintenance - includes service schedules
and recommended lubricants for all the machine.
The remaining sections are alphabetically coded and deal
with Dismantling, Overhaul etc. of specific components, for
example:
Section contents, technical data, circuit descriptions,
operation descriptions etc. are inserted at the beginning of
each alphabetically coded section.
All sections are listed on the front cover; tabbed divider
cards align directly with individual sections on the front
cover for rapid reference.
Where a torque setting is given as a single figure it may be
varied by plus or minus 3%. Torque figures indicated are
for dry threads, hence for lubricated threads may be
reduced by one third.
'Left Hand' and 'Right Hand' are as viewed from the rear of
the machine facing forwards.
AAttachments
BBody and Framework...etc.

Section 1 - General Information
Introduction
About this Publication
1-2 1-2
9803/9390-2
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Section 1 - General Information
1-3 1-3
9803/9390-2
Machine Identification
Identifying Your Machine
The machine has a Data Plate 1-X attached to the rear of
the machine.
The serial numbers of the machine, engine and gearbox
are stamped on this plate.
If the engine is replaced, stamp the new serial number in
place of the old one
Fig 1.
Typical Vehicle Identification Number
(VIN)
1World Manufacturer Identification
2Machine Model
3Year of Manufacture:
4 = 2004
5 = 2005
6 = 2006
7 = 2007
4Manufacturer Location (E = England)
5Machine Serial Number
Explanation of Engine Identification
Number
X
SLP 800 2 E M10060000
1234 5
Code A B C D E
Example KD 50316 J 000001 2
AEntine Type
BEngine Parts List
CCountry of Manufacture
DEngine Serial Number
EYear of Manufacture

Section 1 - General Information
Machine Identification
Identifying Your Machine
1-4 1-4
9803/9390-2
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Section 1 - General Information
Torque Settings
Zinc Plated Fasteners and Dacromet Fasteners
1-5 1-5
9803/9390-2
Torque Settings
Zinc Plated Fasteners and Dacromet Fasteners
T11-002
Introduction
Some external fasteners on JCB machines are
manufactured using an improved type of corrosion
resistant finish. This type of finish is called Dacromet and
replaces the original Zinc and Yellow Plating used on
earlier machines.
The two types of fasteners can be readily identified by
colour and part number suffix. K Table 1. Fastener Types
(T 1-5).
Table 1. Fastener Types
Note: As the Dacromet fasteners have a lower torque
setting than the Zinc and Yellow fasteners, the torque
figures used must be relevant to the type of fastener.
Note: A Dacromet bolt should not be used in conjunction
with a Zinc or Yellow plated nut, as this could change the
torque characteristics of the torque setting further. For the
same reason, a Dacromet nut should not be used with a
Zinc or Yellow plated bolt.
Note: All bolts used on JCB machines are high tensile and
must not be replaced by bolts of a lesser tensile
specification.
Note: Dacromet bolts, due to their high corrosion
resistance are used in areas where rust could occur.
Dacromet bolts are only used for external applications.
They are not used in applications such as gearbox or
engine joint seams or internal applications.
Bolts and Screws
Use the following torque setting tables only where no
torque setting is specified in the text.
Note: Dacromet fasteners are lubricated as part of the
plating process, do not lubricate.
Torque settings are given for the following conditions:
Condition 1
– Un-lubricated fasteners
– Zinc fasteners
– Yellow plated fasteners
Condition 2
– Zinc flake (Dacromet) fasteners
– Lubricated zinc and yellow plated fasteners
– Where there is a natural lubrication. For example,
cast iron components
Verbus Ripp Bolts
Fig 2.
Torque settings for these bolts are determined by the
application. Refer to the relevant procedure for the
required settings.
Fastener
Type Colour Part No. Suffix
Zinc and
Yellow Golden finish 'Z' (e.g. 1315/3712Z)
Dacromet Mottled silver finish 'D' (e.g. 1315/3712D)

Section 1 - General Information
Torque Settings
Zinc Plated Fasteners and Dacromet Fasteners
1-6 1-6
9803/9390-2
Table 2. Torque Settings - UNF Grade 'S' Fasteners
Table 3. Torque Settings - Metric Grade 8.8 Fasteners
Bolt Size Hexagon (A/F) Condition 1 Condition 2
in. mm in. Nm kgf m lbf ft Nm kgf m lbf ft
1/4 6.3 7/16 11.2 1.1 8.3 10.0 1.0 7.4
5/16 7.9 1/2 22.3 2.3 16.4 20.0 2.0 14.7
3/8 9.5 9/16 40.0 4.1 29.5 36.0 3.7 26.5
7/16 11.1 5/8 64.0 6.5 47.2 57.0 5.8 42.0
1/2 12.7 3/4 98.00 10.0 72.3 88.0 9.0 64.9
9/16 14.3 13/16 140.0 14.3 103.2 126.0 12.8 92.9
5/8 15.9 15/16 196.0 20.0 144.6 177.0 18.0 130.5
3/4 19.0 1 1/8 343.0 35.0 253.0 309.0 31.5 227.9
7/8 22.2 1 15/16 547.0 55.8 403.4 492.0 50.2 362.9
1 25.4 1 1/2 814.0 83.0 600.4 732.0 74.6 539.9
1 1/8 31.7 1 7/8 1181.0 120.4 871.1 1063.0 108.4 784.0
1 1/4 38.1 2 1/4 1646.0 167.8 1214.0 1481.0 151.0 1092.3
Bolt Size Hexagon (A/F) Condition 1 Condition 2
ISO Metric
Thread mm mm Nm kgf m lbf ft Nm kgf m lbf ft
M5 5 8 5.8 0.6 4.3 5.2 0.5 3.8
M6 6 10 9.9 1.0 7.3 9.0 0.9 6.6
M8 8 13 24.0 2.4 17.7 22.0 2.2 16.2
M10 10 17 47.0 4.8 34.7 43.0 4.4 31.7
M12 12 19 83.0 8.5 61.2 74.0 7.5 54.6
M16 16 24 205.0 20.9 151.2 184.0 18.8 135.7
M20 20 30 400.0 40.8 295.0 360.0 36.7 265.5
M24 24 36 690.0 70.4 508.9 621.0 63.3 458.0
M30 30 46 1372.0 139.9 1011.9 1235.0 125.9 910.9
M36 36 55 2399.0 244.6 1769.4 2159.0 220.0 1592.4

Section 1 - General Information
Torque Settings
Zinc Plated Fasteners and Dacromet Fasteners
1-7 1-7
9803/9390-2
Table 4. Metric Grade 10.9 Fasteners
Table 5. Metric Grade 12.9 Fasteners
Bolt Size Hexagon (A/F) Condition 1 Condition 2
ISO Metric
Thread mm mm Nm kgf m lbf ft Nm kgf m lbf ft
M5 5 8 8.1 0.8 6.0 7.3 0.7 5.4
M6 6 10 13.9 1.4 10.2 12.5 1.3 9.2
M8 8 13 34.0 3.5 25.0 30.0 3.0 22.1
M10 10 17 67.0 6.8 49.4 60.0 6.1 44.2
M12 12 19 116.0 11.8 85.5 104.0 10.6 76.7
M16 16 24 288.0 29.4 212.4 259.0 26.4 191.0
M20 20 30 562.0 57.3 414.5 506.0 51.6 373.2
M24 24 36 971.0 99.0 716.9 874.0 89.1 644.6
M30 30 46 1930.0 196.8 1423.5 1737.0 177.1 1281.1
M36 36 55 3374.0 344.0 2488.5 3036.0 309.6 2239.2
Bolt Size Hexagon (A/F) Condition 1 Condition 2
ISO Metric
Thread mm mm Nm kgf m lbf ft Nm kgf m lbf ft
M5 5 8 9.8 1.0 7.2 8.8 0.9 6.5
M6 6 10 16.6 1.7 12.2 15.0 1.5 11.1
M8 8 13 40.0 4.1 29.5 36.0 3.7 26.5
M10 10 17 80.0 8.1 59.0 72.0 7.3 53.1
M12 12 19 139.0 14.2 102.5 125.0 12.7 92.2
M16 16 24 345.0 35.2 254.4 311.0 31.7 229.4
M20 20 30 674.0 68.7 497.1 607.0 61.9 447.7
M24 24 36 1165.0 118.8 859.2 1048.0 106.9 773.0
M30 30 46 2316.0 236.2 1708.2 2084.0 212.5 1537.1
M36 36 55 4049.0 412.9 2986.4 3644.0 371.6 2687.7

Section 1 - General Information
Torque Settings
Zinc Plated Fasteners and Dacromet Fasteners
1-8 1-8
9803/9390-2
Table 6. Torque Settings - Rivet Nut Bolts/Screws
Table 7. Torque Settings - Internal Hexagon Headed Cap Screws (Zinc)
Bolt Size
Nm kgf m lbf ft
ISO Metric
Thread mm
M3 3 1.2 0.1 0.9
M4 4 3.0 0.3 2.0
M5 5 6.0 0.6 4.5
M6 6 10.0 1.0 7.5
M8 8 24.0 2.5 18.0
M10 10 48.0 4.9 35.5
M12 12 82.0 8.4 60.5
Bolt Size
Nm kgf m lbf ft
ISO Metric
Thread
M3 2.0 0.2 1.5
M4 6.0 0.6 4.5
M5 11.0 1.1 8.0
M6 19.0 1.9 14.0
M8 46.0 4.7 34.0
M10 91.0 9.3 67.0
M12 159.0 16.2 117.0
M16 395.0 40.0 292.0
M18 550.0 56.0 406.0
M20 770.0 79.0 568.0
M24 1332.0 136.0 983.0

Section 1 - General Information
Torque Settings
Hydraulic Connections
1-9 1-9
9803/9390-2
Hydraulic Connections
T11-003
'O' Ring Face Seal System
Adaptors Screwed into Valve Blocks
Adaptor screwed into valve blocks, seal onto an 'O' ring
which is compressed into a 45° seat machined into the
face of the tapped port.
Table 8. Torque Settings - BSP Adaptors
Table 9. Torque Settings - SAE Connections
BSP Adaptor
Size Hexagon (A/F)
Nm kgf m lbf ftin. mm
1/4 19.0 18.0 1.8 13.0
3/8 22.0 31.0 3.2 23.0
1/2 27.0 49.0 5.0 36.0
5/8 30.0 60.0 6.1 44.0
3/4 32.0 81.0 8.2 60.0
1 38.0 129.0 13.1 95.0
1 1/4 50.0 206.0 21.0 152.0
SAE Tube
Size SAE Port Thread Size
Hexagon (A/F)
Nm kgf m lbf ftmm
4 7/16 - 20 15.9 20.0 - 28.0 2.0 - 2.8 16.5 - 18.5
6 9/16 - 18 19.1 46.0 - 54.0 4.7 - 5.5 34.0 - 40.0
8 3/4 - 16 22.2 95.0 - 105.0 9.7 - 10.7 69.0 - 77.0
10 7/8 - 14 27.0 130.0 - 140.0 13.2 - 14.3 96.0 - 104.0
12 1 1/16 - 12 31.8 190.0 - 210.0 19.4 - 21.4 141.0 - 155.0
16 1 5/16 - 12 38.1 290.0 - 310.0 29.6 - 31.6 216.0 - 230.0
20 1 5/8 47.6 280.0 - 380.0 28.5 - 38.7 210.0 - 280.0

Section 1 - General Information
Torque Settings
Hydraulic Connections
1-10 1-10
9803/9390-2
Hoses Screwed into Adaptors
Fig 3.
Hoses 3-B screwed into adaptors 3-A seal onto an `O' ring
3-C which is compressed into a 45° seat machined into the
face of the adaptor port.
Note: Dimension 3-D will vary depending upon the torque
applied.
Table 10. BSP Hose - Torque Settings
BSP Hose Size Hexagon (A/F)
Nm kgf m lbf ftin. mm
1/8 14.0 14.0 - 16.00 1.4 - 1.6 10.3 - 11.8
1/4 19.0 24.0 - 27.0 2.4 - 2.7 17.7 - 19.9
3/8 22.0 33.0 - 40.0 3.4 - 4.1 24.3 - 29.5
1/2 27.0 44.0 - 50.0 4.5 - 5.1 32.4 - 36.9
5/8 30.0 58.0 - 65.0 5.9 - 6.6 42.8 - 47.9
3/4 32.0 84.0 - 92.0 8.6 - 9.4 61.9 - 67.8
1 38.0 115.0 - 126.0 11.7 - 12.8 84.8 - 92.9
1 1/4 50.0 189.0 - 200.0 19.3 - 20.4 139.4 - 147.5
1 1/2 55.0 244.0 - 260.0 24.9 - 26.5 180.0 - 191.8

Section 1 - General Information
Torque Settings
Hydraulic Connections
1-11 1-11
9803/9390-2
Adaptors into Component Connections with Bonded Washers
Table 11. BSP Adaptors with Bonded Washers - Torque Settings
BSP Size
Nm kgf m lbf ftin.
1/8 20.0 2.1 15.0
1/4 34.0 3.4 25.0
3/8 75.0 7.6 55.0
1/2 102.0 10.3 75.0
5/8 122.0 12.4 90.0
3/4 183.0 18.7 135.0
1 203.0 20.7 150.0
1 1/4 305.0 31.0 225.0
1 1/2 305.0 31.0 225.0

Section 1 - General Information
Torque Settings
Hydraulic Connections
1-12 1-12
9803/9390-2
'Torque Stop' Hose System
Fig 4.
`Torque Stop' Hoses 4-B screwed into adaptors 4-A seal
onto an 'O' ring 4-C which is compressed into a 45° seat
machined in the face of the adaptor port. To prevent the 'O'
ring being damages as a result of over tightening, 'Torque
Stop' Hoses have an additional shoulder 4-D, which acts
as a physical stop.
Note: Minimum dimension 4-E fixed by shoulder 4-D.
Table 12. BSP `Torque Stop' Hose - Torque Settings
BSP Hose Size Hexagon (A/F)
Nm kgf m lbf ftin. mm
1/8 14.0 14.0 1.4 10.0
1/4 19.0 27.0 2.7 20.0
3/8 22.0 40.0 4.1 30.0
1/2 27.0 55.0 5.6 40.0
5/8 30.0 65.0 6.6 48.0
3/4 32.0 95.0 9.7 70.0
1 38.0 120.0 12.2 89.0
1 1/4 50.0 189.0 19.3 140.0
1 1/2 55.0 244.0 24.9 180.0

Section 1 - General Information
1-13 1-13
9803/9390-2
Service Tools
Numerical List
The tools listed in the table are special tools required for
carrying out the procedures described in this manual.
These tools are available from JCB Service.
Some tools are available as kits or sets, the part numbers
for parts within such kits or sets are not listed here. For full
details of all tools, including the content of kits and sets,
see the relevant section in this manual.
Note: Tools other than those listed will be required. It is
expected that such general tools will be available in any
well equipped workshop or be available locally from any
good tool supplier.
Part
Number Description Tool Detail Reference - see Section:
- AVO Test Kit - see tool detail reference for content C
- Electrical Repair Kit - see tool detail reference for content C
993/85700 Battery Tester C
825/10034 Transaxle Service Puller F

Section 1 - General Information
Service Tools
Numerical List
1-14 1-14
9803/9390-2
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