1996 LAND ROVER DEFENDER lock

REAR SUSPENSION
1
SPECIFICATIONS, TORQUE TORQUE VALUES
NOTE: Torque wrenches should be regularly checked for accuracy to ensure that all fixings are
tightened to the correct torque.
Nm
Anti-roll bar
- Strap nyloc nuts 30..............................................................................
- Ball link self lock nut 68........................................................................
- Castellated nut 40................................................................................
Top link to mounting bracket 176.....................................................................
Bottom link to axle 176.....................................................................................
Bottom link to chassis 176...............................................................................
Top link bracket to rear cross member 47......................................................
Shock absorber to axle 37 N............................................................................

70BRAKES
2
DESCRIPTION AND OPERATION REV: 05/99 OPERATION
Master cylinder
A tandem master cylinder, which is assisted by a light
weight, short, compact servo, is fed by a divided fluid
reservoir. The rear section supplies fluid for the
primary circuit and the front section the secondary
circuit.
When the brakes are off, the fluid can move
unrestricted between the dual line system and the
separate reservoirs in the fluid supply tank.
When the footbrake is applied, the primary plunger
assembly moves up the cylinder bore and the
pressure created acts in conjunction with the primary
spring to overcome the secondary springs, thus
moving the secondary plunger assembly up the bore.
At the same time initial movement of both plungers
takes the recuperating seals past the cut-off holes in
the cylinder chambers 'A' and 'C',see J6321, and
applies pressure to the fliud in those chambers, which
is directed to the respective circuits.
The fluid in chambers 'B' and 'D'is unaffected by
movement of the plungers and can move unrestricted
between the separate chambers and respective
reservoirs in the fluid supply tank, both before and
during brake application. When the brakes are
released, the plunger assemblies, aided by the return
springs are retracted faster than the fluid; this creates
a depression between the fluid in chambers 'A' and
'C'and the recuperation seals.
The recuperation seals momentarily collapse allowing
fluid in chambers 'B' and 'D'to flow through the holes
in the plungers, over the collapsed seals and into
chambers 'A' and 'C'respectively. The movement of
fluid from one set of chambers to the other, is
compensated for by fluid from the separate reservoirs
in the supply tank moving through the feed holes in
the cylinder. Conversely, the final return movement of
the plunger assemblies causes the extra fluid in
chambers 'A' and 'C'to move through the cut off holes
into the fluid reservoir.The servo unit provides controlled power assistance
to to the brake pedal when pressure is applied. Power
is obtained from a vacuum pump located on the RH
side of the engine cylinder block. The vacuum is
applied to both sides of a flexing diaphragm, and by
admitting atmosheric pressure to the rear diaphragm,
assistance is obtained. The servo unit is mounted
between the brake pedal and master cylinder and is
linked to these by push rods. Should a vacuum failure
occur, the two push rods will act as a single rod
allowing the brakes to function in the normal way,
although more effort will be required to operate the
brake pedal.
Hydraulic system
A brake fluid loss switch is fitted to the master cylinder
reservoir filler cap. The switch is wired to a warning
light on the vehicle fascia and will illuminate as a bulb
check when the ignition is switched on and
extinguishes when the engine is running and the
handbrake is released. A hydraulic failure in the
system will result in fluid loss, causing the warning
light to illuminate.
On 90 models a pressure reducing valve (PRV), fitted
to the RH bulkhead in the engine compartment,
maintains the braking balance, see J6322. Pressure
to the rear calipers is regulated by the PRV, this valve
is of the failure by-pass type, allowing full system
pressure to the rear brake calipers in the event of a
front (secondary) circuit failure.
NOTE: In some countries, a pressure
reducing valve may be fitted to 110 models
to conform to legal requirements.

70BRAKES
16
REPAIRREV: 05/99 TRANSMISSION BRAKE SHOES
Service repair no - 70.45.18
Remove
1.Park vehicle on level ground, chock road wheels
and release handbrake. Alternatively, raise
vehicle on a ramp.
2.Disconnect rear propeller shaft from
transmission output flange at brake drum.
3.Slacken off transmission brake drum adjustment
bolt.
4.Remove single screw securing brake drum to
output flange.
5.Withdraw drum to expose brake assembly.
6.Release top and bottom springs from brake
shoes, see J6337.
7.Grip dished washer with a pair of pliers, depress
washer and turn through 90°.
8.Remove dished washer, complete with hold
down spring and pin from both shoes.
9.Move brake shoes out from adjuster slides,
release from abutment plate and remove from
backplate.
10.Check that springs are satisfactory for continued
use. If new brake shoes are to be fitted, the
srings should also be renewed.Refit
11.Locate RH brake shoe in slide and secure brake
shoe and lever assembly to backplate with hold
down pin, spring and dished washer.
12.Locate LH brake shoe in slide and fit abutment
plate between both brake shoes. Secure LH
shoe with hold down pin, spring and dished
washer.
13.Fit pull-off springs to brake shoes.
14.Fit brake drum. Tighten screw to
25 Nm (18
lbf/ft).
15.Check that hand brake lever is released.
16.Screw in and tighten adjuster bolt until brake
drum will not rotate by hand.
17.Tighten adjuster bolt to
25 Nm (18 lbf/ft)to
ensure brake drum is locked.
18.Slacken off adjuster bolt by 1.5 turns to give
shoes a running clearance. Check that the drum
is free to rotate.
19.Fit propeller shaft to output flange. Tighten
fixings to
46 Nm (34 lbf/ft).
20.Remove wheel chocks and check operation of
handbrake.

BRAKES
17
REPAIR HANDBRAKE CABLE
Service repair no - 70.35.25
Remove
1.Park vehicle on level ground, chock road wheels
and release handbrake. Alternatively, raise
vehicle on ramp.
2.Remove 3 trim studs and lift up handbrake
gaiter.
3.Remove split pin, clevis pin, washer and
disconnect cable from handbrake lever.
4.Slacken off transmission brake drum adjusting
screw.
5.Disconnect propeller shaft from output flange.
6.Remove retaining screw and withdraw brake
drum.
7.Release handbrake cable clevis from abutment
on cable lever, see J6337, and pull through
aperture in back plate.
8.Pull cable from heelboard and remove from
vehicle.
Refit
9.Feed new cable through heelboard ensuring
rubber grommet is correctly located.
10.Position cable over guide plate, insert through
backplate and connect to cable lever.
11.Fit cable to handbrake lever and secure with
clevis pin and split pin.
12.Fit handbrake gaiter.
13.Fit brake drum. Tighten screw to
25 Nm (18
lbf/ft).
14.Screw in and tighten adjuster bolt until brake
drum will not rotate by hand.
15.Tighten adjuster bolt further to
25 Nm (18 lbf/ft)
to ensure brake drum is locked.
16.Slacken off adjuster bolt by 1.5 turns to give
brake shoes running clearance. Check that the
drum is free to rotate.
17.Slacken locknut and adjust cable to give the
handbrake pawl two notches free movement on
the rachet before being fully operational on third
notch (brake shoes are fully expanded against
drum).
NOTE: Cable adjustment is for a new cable
or to compensate for cable stretch. Cable
adjustment must not be used to take up
brake shoe wear.
18.Fit propeller shaft to output flange. Tighten
fixings to
46 Nm (34 lbf/ft).
19.Remove wheel chocks and check operation of
handbrake.

70BRAKES
18
REPAIR VACUUM PUMP
Service repair no - 70.50.19
Remove
NOTE: To ease pump removal set engine
to T.D.C. on No.1 cylinder.
1.Disconnect battery.
2.Remove air cleaner
See FUEL SYSTEM,
Repair, Air cleaner
.
3.Detach servo hose from vacuum pump.
4.Remove bolt securing air cleaner support
bracket strut.
5.Remove 6 bolts securing vacuum pump.
6.Detach pump complete with strut and harness
bracket. Note location of strut and bracket for
Refit.
Refit
7.Clean mating faces of pump and block.
8.Loosely assemble pump to block with a new
gasket and with air cleaner strut and harness
bracket located under heads of bolts noted
during Remove.
9.Evenly tighten bolts, to depress pump plunger,
finally tightening to
25 Nm (18 lbf/ft).
10.Secure strut to air cleaner bracket.
11.Connect vacuum hose and secure with clip.
12.Refit air cleaner
See FUEL SYSTEM, Repair,
Air cleaner
.

WHEELS AND TYRES
5
REPAIR Off Vehicle Balancing
Balance wheel assembly referring to equipment
manufacturer's instructions.
It is essential that the wheel is located by the centre
holeNOTthe stud holes. To ensure positive wheel
location the diameter of the locating collar on the
machine shaft must be 112,80 to 112,85 mm (4.441 to
4.443 in). This diameter will ensure that the collar fits
correctly within the centre hole of the wheel.
Where possible, always use the vehicle wheel
retaining nuts to locate the wheel on the balancer, to
avoid damaging the wheel. If this is not possible, the
locating nuts must be of a similar pattern to the
original wheel nuts. The use of conical type wheel
nuts for this purpose may damage the surface on alloy
wheels.
Cleaning
Wash the aluminium wheels using a suitable wash
and wax concentrate, correctly diluted and rinse with
cold clear water.DO NOTuse abrasives or aluminium
wheel cleaners containing acid, as they will destroy
the lacquer finish.
Tyre changing
Use only tyre changing equipment to mount or
demount tyres, following the equipment
manufacturer's instructions.DO NOTuse hand tools
or tyre levers, as they may damage tyre beads or the
wheel rim.
Puncture repair
Remove punctured tyre from wheel and repair using a
combination service plug and vulcanising patch.
Always follow manufacturer's instructions when using
a puncture repair kit.
Only punctures in tread area are reparable,DO NOT
attempt to repair punctures in tyre shoulders or
sidewalls.
Do not attempt to repair a tyre that has sustained the
following: bulges or blisters, ply separation, broken or
cracked beads, wear indicators visible and punctures
larger than 6 mm diameter.
CAUTION: Do not use tyre sealants that
are injected through valve stem to repair
punctured tyres, they may produce wheel
corrosion and tyre imbalance.
Aluminium wheel rim bead seats should be cleaned
using a non-abrasive cleaner to remove the mounting
lubricants and old rubber. Before mounting or
demounting a tyre, bead area should be well
lubricated with a suitable tyre lubricant.
TYRE FITTING
Alloy wheels
1.Install a new valve assembly.
2.Ensure wheel and tyre is adequately lubricated.
3.Mount tyre in normal manner. Inflate tyre and at
same time apply hand pressure to area around
valve to aid seating over valve first.
NOTE: Stop inflation immediately if tyre
seats opposite valve, as this will result in
valve being blocked by tyre beading,
making further inflation impossible, and carry out
following procedure.
4.Deflate tyre, unseat and rotate it around the rim
until valve is in line with that part of tyre which
seated initially. This part of beading having
seated over hump previously will automatically
seat first when tyre is re-inflated.
5.Inflate tyre to seat beads correctly, finally inflate
to correct pressure.

CHASSIS AND BODY
1
REPAIR DOORS
RH rear door lock mechanism
RH front door lock mechanism

76CHASSIS AND BODY
2
REPAIR DOOR TRIM CASING
Service repair no - 76.34.01 - Front doors
Service repair no - 76.34.04 - Rear doors
Remove
1.Prise open finisher caps, remove 2 screws, and
detach door pull.
2.Remove single screw behind remote control
lever.
3.Prise off remote control lever bezel.
4.Prise off door locking button bezel.
5.Prise out window regulator handle centre
finisher, remove retaining screw, and withdraw
handle and bezel.
6.Using a screwdriver to release trim fasteners,
carefully ease trim casing from door.