1999 LAND ROVER DISCOVERY steering

FRONT SUSPENSION
60-30 REPAIRS
Refit
1.Clean lower ball joint location and surrounding
area of axle yoke.
2.Apply a 12 mm (0.5 in) wide yellow paint stripe
on axle yoke, adjacent to lower ball joint
location.
3.Fit tool LRT-54-022 to tool LRT-54-008 and
secure with screw.
4.Fit tool LRT-54-022 and tool LRT-54-008 to
lower ball joint location on axle yoke.
5.Fit new lower ball joint to tool LRT-54-008/14.
6.Fit LRT-54-008/14 and lower ball joint to LRT-
54-008, with lower ball joint positioned on axle
yoke.
7.Align tool assembly and press lower ball joint
into axle yoke.
CAUTION: Damage to the joint boot will
result if the tool is not correctly aligned
during the fitting procedure.
8.Remove tools from axle yoke
9.Fit steering knuckle.

+ FRONT SUSPENSION, REPAIRS,
Steering knuckle.
Steering knuckle
$% 60.15.19
Remove
1.Remove wheel hub.

+ FRONT SUSPENSION, REPAIRS,
Wheel hub.
2.Remove 3 bolts securing mudshield and
remove mudshield.
3.Remove 2 nuts securing track rod and (if
applicable) drag link to steering knuckle.
4.Break taper joints using LRT-57-036, then
position track rod and drag link aside.

FRONT SUSPENSION
REPAIRS 60-31
5.Remove 2 nuts securing ball joints to steering
knuckle.
6.Break taper joints using LRT-54-027 and
remove steering knuckle.
7.Remove tension collet from steering knuckle.
8.Remove drive shaft oil seal from axle casing.Refit
1.Clean taper bores in steering knuckle and
tension collet.
2.Fit tension collet into steering knuckle and
tighten to 5 Nm (3.7 lbf.ft).
3.Clean ball joint tapers and taper seats.
4.Position steering knuckle to axle yoke. Fit
upper ball joint nut and tighten to 110 Nm (81
lbf.ft). Fit lower ball joint nut and tighten to 135
Nm (100 lbf.ft).
5.Clean track rod and (if applicable) drag link
tapers and taper seats.
6.Connect track rod and drag link to steering
knuckle. Fit track rod and drag link nuts and
tighten to 80 Nm (59 lbf.ft).
7.Clean mudshield and steering knuckle mating
faces. Position mudshield, fit bolts and tighten
to 10 Nm (7 lbf.ft).
8.Fit wheel hub.
+ FRONT SUSPENSION, REPAIRS,
Wheel hub.

FRONT SUSPENSION
REPAIRS 60-33
Wheel hub
$% 60.25.01
Remove
1.Release ABS sensor harness grommet from
inner wing valance and disconnect multiplug.
2.Raise front of vehicle.
WARNING: Do not work on or under a
vehicle supported only by a jack. Always
support the vehicle on safety stands.
3.Remove road wheel.
4.Pull ABS sensor harness through aperture into
wheel arch.5.Release harness from brackets on inner wing
valance, suspension turret and front hub.
6.Release stake from drive shaft nut.
7.With assistance, remove drive shaft nut.
Discard the nut.
8.Remove front brake disc.

+ BRAKES, REPAIRS, Brake disc -
front.
9.Remove 4 bolts securing wheel hub to steering
knuckle.
10.Release wheel hub from steering knuckle, then
remove wheel hub and drive shaft assembly
from axle.
CAUTION: Do NOT remove the ABS sensor
from the hub. The hub and the sensor are
supplied as an assembly.

FRONT SUSPENSION
60-34 REPAIRS
11.Position the wheel hub and drive shaft on a
press, place supports beneath the wheel studs
and press the drive shaft from the wheel hub.
12.Remove drive shaft oil seal from axle casing. Refit
1.Clean drive shaft oil seal recess, drive shaft
splines, oil seal running surface, wheel hub
and steering knuckle mating faces, ABS
sensor and sensor recess.
2.Lubricate lip of new drive shaft oil seal and
running surface on drive shaft with clean
differential oil.

+ CAPACITIES, FLUIDS,
LUBRICANTS AND SEALANTS,
Lubrication.
3.Use tool LRT-51-012 to fit new drive shaft oil
seal to axle casing.
4.Fit drive shaft to axle casing.
5.Apply anti-seize compound to wheel hub and
steering knuckle mating face.
M51 0057

FRONT SUSPENSION
REPAIRS 60-35
6.Apply a 3 mm (0.125 in) wide bead of sealant,
Part No. STC 50554 around drive shaft
circumference, as illustrated.
7.Ensure ABS harness is located in cut out in
steering knuckle.
8.Fit wheel hub to drive shaft and align steering
knuckle. The sealant will smear along the
length of the splines as the wheel hub is fitted
to the drive shaft.
9.Fit wheel hub bolts and tighten to 100 Nm (74
lbf.ft).
10.Fit new drive shaft nut and lightly tighten.
11.Fit front brake disc.

+ BRAKES, REPAIRS, Brake disc -
front.
12.With assistance, final tighten drive shaft nut to
490 Nm (360 lbf.ft). Stake drive shaft nut. The
drive shaft nut must be tightened before
sealant has cured.
13.Secure ABS sensor harness to brackets and
secure grommet to inner wing.
14.Fit road wheel and tighten nuts to 140 Nm (103
lbf.ft).
15.Remove stand(s) and lower vehicle.
16.Connect ABS sensor multiplug.
Damper - front
$% 60.30.02
Remove
1.Raise front of vehicle.
WARNING: Do not work on or under a
vehicle supported only by a jack. Always
support the vehicle on safety stands.
2.Remove road wheel.
3. RH damper: Release coolant reservoir and
position aside.
4.Loosen through bolt securing damper to turret.
WARNING: Make sure the axle cannot move
when the damper is disconnected. The
damper limits the downward movement of
the axle. If the axle is not restrained,
disconnecting the damper will allow
unrestricted movement which may cause
personal injury or damage to equipment.
M51 0058

FRONT SUSPENSION
REPAIRS 60-37
Bushes - radius arm
$% 60.35.18
Remove
1.Raise front of vehicle.
WARNING: Do not work on or under a
vehicle supported only by a jack. Always
support the vehicle on safety stands.
2.Remove road wheel.
3.Remove and discard nut securing track rod to
steering knuckle.
4.Using LRT-57-036 break taper, release track
rod and position aside5.Remove and discard cable tie securing front
axle breather
6.Remove nut and bolt securing radius arm to
chassis.
7.Remove 2 nuts securing radius arm to axle.
8.Remove rear bolt from radius arm.
9.Remove front bolt from radius arm and remove
radius arm from axle.

FRONT SUSPENSION
60-38 REPAIRS
10.Using LRT-60-011/1 and LRT-60-011/2 press
out bush from rear end of radius arm.
11.Using a suitable piece of tubing, press out
bushes from axle end of radius arm.Refit
1.Clean and lubricate bush and radius arm
mating faces.
2.Using LRT-60-011/1,LRT-60-011/2 and LRT-
60-011/3, press bush into rear end of radius
arm.
3.Using a suitable piece of tubing press front
radius arm bush into radius arm.
4.Repeat above operation for remaining bush.
5.Position radius arm to vehicle and fit securing
nuts and bolts, do not tighten at this stage.
CAUTION: Nuts and bolts must be tightened
with weight of vehicle on suspension.
6.Fit cable tie to secure axle breather.
7.Fit track rod to steering knuckle and secure with
nut, tighten to 125 Nm (92 lbf.ft).
8.Fit road wheel and tighten nuts to 140 Nm (103
lbf.ft).
9.Remove stand(s) and lower vehicle.
10.Tighten radius arm nuts and bolts to 230 Nm
(170 lbf.ft).

BRAKES
DESCRIPTION AND OPERATION 70-19
ABS sensors
The ABS sensors supply the SLABS ECU with a sinusoidal speed signal from each wheel. An inductive sensor,
installed in the hub bearing of each wheel, senses off a 60 tooth exciter ring integrated into the inner race of the hub
bearing. Each ABS sensor has a fly-lead connecting it to the vehicle wiring.
HDC switch
The HDC switch is a latching push switch installed on the fascia, in the switchpack inboard of the steering wheel.
When pushed in, the switch connects an ignition supply to the SLABS ECU to initiate HDC.
Warning indications
The SLABS ECU operates audible and visual warnings to convey brake system status.
Audible warning
A repetitive chime, at a frequency of 2 Hz, draws attention to warning lamp indications. The chime is produced on the
speaker in the instrument pack.
Warning lamps
1ABS warning lamp
2HDC fault warning lamp
3ETC warning lamp4HDC information warning lamp
5Brake warning lamp (all except NAS)
6Brake warning lamp (NAS only)
The following brake system warning lamps can be found in the instrument pack:
lA red brake graphic (all except NAS vehicles) or red BRAKE legend (NAS vehicles), to warn of low brake fluid
level, handbrake on and brake control system failure affecting EBD.
lAn amber ABS graphic, to warn of brake control system failure affecting the ABS function.
lAn amber TC graphic, to warn of brake control system failure affecting the ETC function.
lTwo inclined vehicle graphics, one amber (fault) and one green (information), to indicate operating status of HDC
and to warn of brake control system failure affecting the HDC function.
Each warning lamp is illuminated by a separate LED. The ABS, brake and ETC warning lamps are continuously on
while illuminated; the two HDC warning lamps are either continuously on or flash at a frequency of 2 Hz while
illuminated.