1999 LAND ROVER DEFENDER change wheel

01INTRODUCTION
4
INFORMATION 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 Supplement 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 Supplement, neither
the Manufacturer or Dealer, by whom this Supplement
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 posibility of personal injury or
damage to the components.Also, the amount of time
which they can 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
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04GENERAL SPECIFICATION DATA
12
INFORMATION TYRE SIZE AND PRESSURES
90 models Front Rear
Normal - all load conditions
205/80 R16 Radial1,9 bar .................................................. 2,6 bar
28 Ibf/in
238 Ibf/in2
2,0 kgf/cm22,7 kgf/cm2
265/75 R16 Radial (multi terrain)1,9 bar .......................... 2,4 bar
28 Ibf/in235 Ibf/in2
2,0 kgf/cm22,5 kgf/cm2
7.50 R16 Radial1,9 bar ...................................................... 2,6 bar
28 Ibf/in238 Ibf/in2
2,0 kgf/cm22,7 kgf/cm2
110 models
Normal - all load conditions
7.50 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
7.50 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.
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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 to95 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.
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60FRONT SUSPENSION
2
REPAIR 12.Knock back staking and using a suitable socket,
remove and discard hub nut.
13.Remove washer from hub.
14.Remove hub and brake disc assembly complete
with bearings.
15.Remove outer bearing and spacer from hub.
16.Remove grease seal and inner bearing from
hub.
17.Remove inner and outer bearing tracks from
hub.
Refit
18.Clean hub and bearing locations.
19.Fit inner and outer bearing tracks to hub.
20.Pack inner bearing with grease and fit to hub.
21.Fit new seal flush with rear face of hub using
LRT-54-003andLRT-99-003.
22.Clean stub axle.
23.Pack outer bearing with grease, fit spacer and
bearing to hub.
24.PositionLRT-54-019over hub nut threads on
axle casing.
25.Fit hub assembly to stub axle, remove
LRT-54-019.
26.Fit washer and new hub nut and tighten to30
Nm (22 lbf.ft).
27.Rotate and push/pull hub to setle bearings.
Tighten hub nut to210 Nm (150 lbf.ft).
28.To check drive shaft end float, mount a dial
gauge using bracketLRT-99-503to driving
member bolt hole.
29.Ensure dial gauge is contacting hub nut face.
30.Move drive shaft in and out noting dial gauge
reading.31.If end float is present refer to table for correct
spacer and change spacer as necessary.
32.When no end float is evident, remove the dial
gauge and mounting bracket.
33.Stake the hub nut.
34.Clean hub and axle shaft faces.
35.Fit new driving member gasket.
36.Position driving member to hub and tighten new
bolts to65 Nm (48 lbf.ft).
37.Fit original shim(s) to drive shaft and secure with
circlip.
38.Position brake caliper to hub, align fixings, fit
bolts and tighten to82 Nm (60 lbf.ft).
39.Remove plugs from brake pipe connections.
40.Connect brake pipe union to jump hose and
tighten union.
CAUTION: Use 2 spanners when
tightening or loosening unions.
41.Remove brake hose clamp from jump hose.
42.Bleed brake system.See BRAKES,
Adjustment.
43.Fit road wheel, remove axle stand and tighten
wheel nuts to130 Nm (95 lbf.ft).
44.Operate foot brake to locate brake pads before
taking vehicle on road.
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64REAR SUSPENSION
2
REPAIR 25.If end float is present refer to table for correct
spacer and change spacer as necessary.
26.When no end float is evident, remove the dial
gauge and mounting bracket.
27.Stake the hub nut.
28.Clean hub and axle shaft faces.
29.Fit new driving member gasket.
30.Position driving member to hub and tighten new
bolts to65 Nm (48 lbf.ft).
31.Fit original shim(s) to drive shaft and secure with
circlip.
32.Position caliper to hub, fit bolts and tighten to82
Nm (61 lbf.ft).
33.Fit road wheel, remove axle stands and tighten
road wheel nuts to130 Nm (96 lbf.ft).
34.Operate brake pedal to locate brake pads before
driving vehicle.
35.Check and top up brake fluid.
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PANEL REPAIRS
1
PROCEDURES GENERAL WELDING PRECAUTIONS
The following pages show the procedures to follow
when using welding for repairs. No resistance spot
welds have been used in any of the repairs.
The Aluminium alloy used on all Defender models is a
combination of Aluminium and Magnesium.
When converting a MIG welder for use on Aluminium
it is essential the following components are changed.
The materials shown in brackets are the correct
materials to use:
Torch liner (Teflon or Carbon Fibre)
Contact tip
Feed rollers/wheels
Correct Filler wire (combination of
Aluminium and Magnesium)
Shielding gas (Argon)
When carrying out welding operations the following
criteria must be observed:
Where resistance spot welds have been
used in production, these must be replaced
with either MIG plug welds or rivets.
To replace each production spot weld an 8
mm (0.31 in) hole must be drilled and/or
punched, and a MIG weld then made in its
place. The number of plug welds must
match exactly the number of spot welds
which have been removed.
Where holes are left in an existing panel
after removal of the spot welds, a single
MIG plug weld will be made in each hole as
appropriate.
When MIG welding ensure the correct wire
is used.
The replacement welds in the welding
diagrams are denoted by the following
symbols:
A. MIG Plug welds
B. MIG seam weld
Seat Belt Anchorages
Seat belt anchorages are safety critical. When making
repairs in these areas it is essential to follow design
specifications.
Where possible, the original production assembly
should be used, complete with its seat belt
anchorages, or the cut line should be so arranged that
the original seatbelt anchorage is not disturbed.
All welds within 250mm (9.9in.) of seat belt
anchorages must be carefully checked for weld
quality, including spacing of spot welds. A crack
detection process must be carried out in these areas.
WARNING: Body parts incorporating seat
belt anchorages MUST be renewed
completely if damaged beyond repair, as
the welds in these areas are safety critical and
cannot be disturbed.
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PANEL REPAIRS
3
REPAIR WHEEL ARCH - FRONT
Remove
The procedure to change the Inner Front Wheelarch is
the same as for the Wing Upper, except for removal of
the ABS sensors and shield, if fitted.
BULKHEAD ASSEMBLY
Remove
1.Disconnect both battery leads, negative lead
first.
2.Remove front lower wing.See this Section.
3.Remove RH and LH front upper wing.See this
Section.
4.Remove headlamp mounting panels.See this
Section.
5.Remove screen aperture.See this Section.
6.Remove both front doors.
7.Remove lower fascia panel.See CHASSIS
AND BODY, Repair.
8. Models with A/C:Remove relevant A/C pipes.
9.Remove front grille.
10.Drain cooling system.See COOLING
SYSTEM, Adjustment.
11.Remove radiator and intercooler.
12. Models with A/C:Remove condensor.
13.Remove air cleaner assembly.
14.Remove heater unit.See HEATING AND
VENTILATION, Repair.
15.Remove brake servo assembly.
16.Remove heater ducts.
17.Remove both front seats.
18.Remove front carpets.
19.Release all relevant harnesses and position
aside.
20.Remove facia support bracket.
Refit
21.Prepare and clean panel joint faces. Ensure all
necessary grommets and sealant is applied to
new bulkhead.
22.Reverse removal procedure.
23.Bleed brake system.See BRAKES,
Adjustment.
24.Align headlamps.See ELECTRICAL,
Adjustment.
25.Water test after refitting.
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WIPERS AND WASHERS
3
DESCRIPTION AND OPERATION Although windscreen wiper functionality remains the same, the mechanical architecture has undergone significant
changes. The body structure has undergone some minor changes to house the revised wiper linkage.
A modified wiper motor is introduced which is balanced to reduce operation noise. The brush plate is fitted with
capacitors to reduce radio interference and a thermal cut-out is introduced to prevent motor burnout. The motor
also contains a new park switch which also reduces operation noise. A common motor is now used on both LHD
and RHD variants.
The motor is repositioned on the bulkhead which allows a straighter drive cable run. The straighter run reduces
load on the cable allowing a stiffer cable to be used. The stiffer cable and the incorporation of a reduced friction
material reduces torsion wind-up of the cable and results in smoother wiper operation and a reduction of blade
over travel.
New, larger wheel boxes are fitted in an inverted position from the previous installation. The bulkhead mounting
holes are larger with flats for positive location of the wheel box spindle. The wheel boxes now feature a 40 tooth
gear ratio in lieu of a 32 tooth gear. This reduces backlash and load and further reduces blade over travel. The
wheel box casings are secured with locknuts.
The wheel box spindles now have a splined DIN taper fitting for the new wiper arms which are secured on the
spindle with an M8 nut. The taper improves arm retention.
A new grease is introduced which improves wiper operation at very low temperatures.
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