change wheel LAND ROVER DEFENDER 1996 Workshop Manual

01INTRODUCTION
4
INFORMATIONREV: 05/99 ACCESSORIES AND CONVERSIONS
DO NOT FITunapproved accessories or conversions,
as they could affect the safety of the vehicle.
Land Rover will not accept liability for death, personal
injury, or damage to property which may occur as a
direct result of the fitting of non-approved conversions
to the vehicle.
WHEELS AND TYRES
WARNING: DO NOT replace the road
wheels with any type other than genuine
Land Rover wheels which are designed for
multi-purpose on and off road use and have very
important relationships with the proper operation
of the suspension system and vehicle handling.
Replacement tyres must be of the make and sizes
recommended for the vehicle, and all tyres must
be the same make, ply rating and tread pattern.
STEAM CLEANING
To prevent consequential rusting, any steam cleaning
within the engine bayMUSTbe followed by careful
re-waxing of the metallic components affected.
Particular attention must be given to the steering
column, engine coolant pipes and hose clips.
SPECIFICATION
The specification details and instructions set out in
this Manual apply only to a range of vehicles and not
to any one. For the specification of a particular vehicle
purchasers should consult their Dealer.
The Manufacturer reserves the right to vary
specifications with or without notice, and at such times
and in such manner as it thinks fit. Major as well as
minor changes may be involved in accordance with
the Manufacturer's policy of constant product
improvement.
Whilst every effort is made to ensure the accuracy of
the particulars contained in this Manual, neither the
Manufacturer or Dealer, by whom this Manual is
supplied, shall in any circumstances be held liable for
any inaccuracy or the consequences thereof.SPECIAL SERVICE TOOLS
The use of approved special service tools is
important. They are essential if service operations are
to be carried out efficiently, and safely. Where special
tools are specified,only these tools should be used
to avoid the possibility of personal injury or
damage to the components.Also, the amount of
time which they save can be considerable.
Special tools bulletins will be issued periodically giving
details of new tools as they are introduced.
All orders and enquiries from the United Kingdom
should be sent direct to Cartool (UK) Ltd. Overseas
orders should be placed with the local Cartool
distributor, where one exists. Countries where there is
no distributor may order direct from:
Cartool (UK) Ltd.
Unit 3,
Sterling Business Park,
Brackmills,
Northampton,
England, NN4 7EX.
The tools recommended in this Workshop Manual are
listed in an illustrated catalogue, obtainable from:
Land Rover Publications,
Character Mailing,
Heysham Road,
Bootle,
Merseyside, L70 1JL
COPYRIGHT
Ó1999 Rover Group Limited
All rights reserved. No part of this publication may be
produced, stored in a retrieval system or transmitted
in any form, electronic, mechanical, recording or other
means without prior written permission of Rover
Group.

GENERAL SPECIFICATION DATA
11
INFORMATION REV: 05/99 TYRE SIZE AND PRESSURES
90 models Front Rear
Normal - all load conditions
205 R16 radial
& 265/75 R16 (multi-terrain)1,9 bar .................................. 2,4 bar
28 Ibf/in
235 Ibf/in2
2,0 kgf/cm22,5 kgf/cm2
750 R16 radial1,9 bar ........................................................ 2,75 bar
28 Ibf/in240 Ibf/in2
2,0 kgf/cm22,8 kgf/cm2
110 models
Normal - all load conditions
750 R16 Radial1,9 bar ....................................................... 3,3 bar
28 Ibf/in
248 Ibf/in2
2,0 kgf/cm23,4 kgf/cm2
130 models
Normal - all load conditions
750 R16 Radial3,0 bar ....................................................... 4,5 bar
44 Ibf/in
265 Ibf/in2
3,1 kgf/cm24,6 kgf/cm2
WARNING: Tyre pressures must be
checked with the tyres cold, as the
pressure is about 0,21 bar (3 Ibf/in
2, 0,2
kgf/cm2) higher at running temperature. If the
vehicle has been parked in the sun or high
ambient temperatures, DO NOT reduce the tyre
pressures, move the vehicle into the shade and
wait for the tyres to cool before checking the
pressures.
WHEELS
90 models
Steel wheel size:
Heavy duty - UK and Western Europe 6.5F X 16.............................
Other markets 5.5F X 16..................................................................
Alloy wheel size 7J X 16................................................................
110 models
Steel wheel size:
Heavy duty - UK and Western Europe 6.5F X 16.............................
Other markets 5.5F X 16..................................................................
130 models
Steel wheel size:
Heavy duty - UK and Western Europe 6.5F X 16.............................
Other markets 5.5F X 16..................................................................
WARNING: Always use the same make and
type of radial-ply tyres, front and rear. DO
NOT use cross-ply tyres, or interchange
tyres from front to rear.
·If the the wheel is marked 'TUBED', an inner
tube MUST be fitted, even with a tubeless tyre.
·If the wheel is marked 'TUBELESS', an inner
tube must NOT be fitted.

51REAR AXLE AND FINAL DRIVE
4
OVERHAUL
37.UsingLRT-51-500and pressLRT-99-002,
remove inner bearing cone from pinion.
INSPECTION
38.Examine all components for obvious wear or
damage.
39.Bearing cones must be a press fit on their
locations, except drive pinion flange and bearing
which is a slide fit.
40.The crown wheel and pinion are supplied as a
matched pair and must not be interchanged
separately. A new crown wheel and pinion
matched pair may be fitted to an original gear
carrier casing if sound. original crown wheel and
pinion, if sound, may be fitted into a replacement
casing.
41.The two parts of differential unit casing are
matched and must not be replaced separately.
42.Discard and renew all thrust washers.
43.Differential housings with worn thrust washer
seatings must be replaced as a pair.
44.Examine differential case to crown wheel joint
face for burrs and damage which could lead to
crown wheel run-out when fitted.ASSEMBLE
Differential
45.Fit differential lower wheel and thrust washer to
differential case. See illustration following
instruction 23.
46.Fit dished thrust washers.
47.Fit cross-shaft and pinions.
48.Fit differential upper wheel and thrust washer.
49.Fit differential upper case lining-up marks.
50.Secure assembly with bolts using Loctite
'Studlock' grade CVX on threads and tighten
evenly and diametrically to
95 Nm (70 lbf/ft).
51.Fit crown wheel to differential casing. Use Loctite
'Studlock' grade CVX on fixing bolt threads and
tighten to correct torque.
52.Press on differential roller bearing cones less
shim washers, usingLRT-51-504, and leave to
one side until required for instruction 96.
53.Fit bearing cups to differential.
54.Fit differential unit and bearings to gear carrier
casing, and rotate unit to centralize bearings. Do
not fit bearing caps.

57STEERING
8
FAULT DIAGNOSIS 4. DIRECTIONAL STABILITY
From 1. GENERAL STEERING:
1.Is directional stability concern when vehicle is
towing?
YES - Check towing/vehicle loading parameters
in Owner's Handbook.
NO - go to 3.
2.Is problem resolved?
YES - end
NO - continue.
3.Check condition of rear trailing link/chassis
bushes.
4.Is problem resolved?
YES - end
NO - continue.
5.Check condition of front and rear shock
absorbers. If necessary, change units in pairs,
side to side.
6.Is problem resolved?
YES - end
NO - continue.
7.Check steering damper
See Steering Damper
.
8.Is problem resolved?
YES - end
NO - continue.
9.Check wheel balance
10.Is problem resolved?
YES - end
NO - contact local technical office.POWER STEERING FLUID LEAKS
1.Is fluid level correct?
YES - go to 3.
NO - Refill or drain to correct level. Bleed
system, check for leaks
See Repair, Power
Steering System - Bleed.
2.Is problem resolved?
YES - end
NO - continue.
3.Are hoses or joints leaking? Check on full lock
with engine at 2000 rev/min.
YES - loosen and retorque joints.
NO - go to 6.
4.Does leak remain?
YES - change PAS pipe.
NO - end.
5.Does leak remain?
YES - suspect seal in component. Check and
replace as necessary.
NO - end.
6.Is oil escaping from filler cap?
YES - bleed system
See Repair, Power
Steering System - Bleed.
NO - go to 8.
7.Is oil still escaping from filler cap?
YES - go back to 1.
NO - end.
8.Is oil leaking from PAS pump?
YES - go to 10.
NO - continue.
9.Is oil leaking from PAS box?
YES - go to 10.
NO - end.
10.Clean unit, add tracer dye to system. Retest
11.Is oil still leaking?
YES - establish leak point. Repair or replace unit
as necessary.
NO - end.

57STEERING
10
FAULT DIAGNOSISREV: 05/99 VISUAL AND SAFETY CHECKS
WARNING: Before taking vehicle out on
the public highway for road test, it is
important that the following basic visual
checks are carried out to ensure that the vehicle
complies with legal requirements.
Tyres and wheel rims
1.Check and adjust tyre pressures
See
GENERAL SPECIFICATION DATA,
Information, Tyre Pressures
.
Note that this information refers to standard tyres
fitted as original equipment.
2.Check condition of tyres. Inspect for signs of
uneven wear, damage and feathering. Check
tread depth.
3.Ensure that the tyre make, type and general
condition are common across each axle.
4.Check wheel rims for signs of damage and
excessive run out.
5.Carry out road test
See Road Test Procedure
.
ROAD TEST PROCEDURE
General steering/handling problems can usually be
classified into one of the categories listed and ARE
GENERALLY RELATED TO THE AGE, CONDITION
AND USE OF THE VEHICLE.
WARNING: Ensure that all road tests are
conducted by suitably qualified drivers in
a safe and legal manner, and where local
traffic conditions allow.
1.Carry out visual and safety checks
See Visual
and Safety Checks
.
Confirm general nature of complaint with customer,
simulating where possible the conditions under which
the problem occurs. Carry out following road test
procedure to establish the problem.2.Steering load assessment - drive at 16 km/h (10
mph). Put 90°turn input into steering wheel,
check self centering. The self centering should
be equal on each lock but not necessarily return
to exactly straight ahead without assistance from
the driver.
3.Steering assessment - drive at 64 km/h (40 mph)
on a staight FLAT road (no camber), check for
steering veer. The vehicle should follow a
straight path with NO tendency to follow a
curved path. If vehicle veers towards the kerb,
vehicle may be 'camber sensitive'. A small
amount of veer in direction of camber is
acceptable.
4.Directional stability assessment - drive at 112
km/h (70 mph) or maximum legal speed on a
straight flat road. Carry out a normal lane
change. Vehicle should quickly settle into a new
straight path.
5.Braking assessment (medium effort) - drive at 96
km/h (60 mph) on a straight flat road. Apply
steady medium braking effort, noting any
tendency to veer. Carry out brake test three
times, if a veer is consistently noted carry out a
braking efficiency test on a rolling road.
6.Braking assessment (full effort) - drive at 96
km/h (60 mph) on a straight flat road. Apply full
braking effort, noting any tendency to veer. Carry
out brake test three times, if a veer is
consistently noted carry out a braking efficiency
test on a rolling road.
If the symptom described by the customer is stiff
steering or steering niggle, carry out stiff steering
procedure
See Stiff Steering Checklist.
If not, proceed with basic checks and adjustments
See Visual Check and Basic Adjustments.

74WHEELS AND TYRES
2
REPAIRREV: 05/99 When the indicators appear in two or more adjacent
grooves, at three locations around the tyre, a new tyre
must be fitted.
NOTE: DO NOT attempt to interchange
tyres, e.g. from front to rear, as tyre wear
produces characteristic patterns
depending on their position. If tyre position is
changed after wear has occured, the performance
of the tyre will be adversely affected.
NOTE: Territorial vehicle regulations
governing tyre wear MUST be adhered to.
WHEELS INSPECTION
Regularly check the condition of the wheels. Replace
any wheel that is bent, cracked, dented or has
excessive runout.
VALVES INSPECTION
Check condition of inflation valve. Replace any valve
that is worn, cracked, loose, or leaking air.TYRE PRESSURES
Maximum tyre life and performance will be
obtained only if tyres are maintained at the correct
pressures.
Tyre pressures must be checked at least once a week
and preferably daily, if the vehicle is used off road.
The tyre inflation pressure is calculated to give the
vehicle satisfactory ride and steering characteristics
without compromising tyre tread life. For
recommended tyre pressures in all conditions
See
GENERAL SPECIFICATION DATA, Information,
Wheels and Tyres
.
Always check tyre inflation pressures using an
accurate gauge and inflate tyres to the
recommended pressures only.
Check and adjust tyre pressuresONLYwhen the
tyres are cold, vehicle parked for three hours or more,
or driven for less than 3.2 km (2 miles) at speeds
below 64 km/h (40 mph). Do not reduce inflation
pressures if the tyres are hot or the vehicle has been
driven for more than 3.2 km (2 miles) at speeds over
64 km/h (40 mph), as pressures can increase by 0.41
bars (6 lb/in
2) over cold inflation pressures.
CheckALLtyre pressures including the spare. Refit
the valve caps as they form a positive seal and keep
dust out of the valve.