LAND ROVER DISCOVERY 1999 Workshop Manual

PROPELLER SHAFTS
47-6 REPAIRS
Bush - spigot - rear propeller shaft
$% 47.15.16
Remove
1.Remove rear propeller shaft.

+ PROPELLER SHAFTS, REPAIRS,
Propeller shaft - rear.
2.Clean protruding end of spigot bush fitted to
rear propeller shaft.
3. Fit LRT-47-001/1 to exposed end of spigot
bush at rear of propeller shaft and tighten
draw bar.
4.Fit LRT-99-004 to draw bar of LRT-47-001/1,
tighten and with assistance remove bush from
rear propeller shaft.
5.Remove bush and dismantle service tools.Refit
1.Ensure bush bore is clean.
2.Fit spigot bush to LRT-47-001/02 , ensure
spigot bush sealing ring is facing drive flange
on service tool.
3.Align bush to bore of rear propeller shaft and
with assistance drive fully home. Note: Do not
allow the propeller shaft universal joint to
support the load during fitting.
4.Remove service tool.
5.Lubricate bush.
6.Fit rear propeller shaft.

+ PROPELLER SHAFTS, REPAIRS,
Propeller shaft - rear.

PROPELLER SHAFTS
REPAIRS 47-7
Flexible coupling
$% 47.20.08
Remove
1.Raise rear of vehicle.
WARNING: Do not work on or under a
vehicle supported only by a jack. Always
support the vehicle on safety stands.
2.If same components to be refitted, reference
mark flexible coupling and mating components.
3.Remove 3 nuts and bolts securing propeller
shaft to flexible coupling.
4.Move propeller shaft forwards to release from
flexible coupling and differential drive flange
spigot.
5.Tie propeller shaft aside.
6.Remove 3 nuts and bolts securing flexible
coupling to differential drive flange and remove
flexible coupling.Refit
1.Ensure flexible coupling, spigot and drive
flanges are clean.
2.Align the arrows on the flexible coupling with
the securing bolt positions as illustrated. Fit
flexible coupling to differential drive flange and
tighten nuts and bolts to 76 Nm (56 lbf.ft).
3.Fit propeller shaft to spigot and flexible
coupling. Tighten nuts and bolts to 76 Nm (56
lbf.ft).
4.Remove stand(s) and lower vehicle.

PROPELLER SHAFTS
OVERHAUL 47-9
OVERHAUL
Propeller shaft
$% 47.15.11
The following bearing replacement procedure
applies to the universal joints of both the front and
rear propeller shafts, including the Hookes joint (i.e.
double universal joint) of the front propeller shaft.
Disassembly
1.Remove propeller shaft:
lFor front propeller shaft.

+ PROPELLER SHAFTS, REPAIRS,
Propeller shaft - front.
lFor rear propeller shaft.

+ PROPELLER SHAFTS, REPAIRS,
Propeller shaft - rear.
2.Thoroughly examine the universal joint for
signs of damage or wear.
3.Clean the universal joint bearing cups and
circlips.
CAUTION: Before removal, mark the
position of the spider pin relative to the
journal yoke ears on the propeller shaft
joint. This will ensure correct assembly and
reduce the possibility of imbalance.
4.Remove the circlips.
5.Tap the yokes to eject bearing cups. Remove
bearing cups.
6.Remove spider from yokes.
7.Clean yokes and bearing cup locations. Reassembly
1.Remove bearing cups from new spider.
2.Check all needle rollers are present and
correctly positioned in bearing cups.
3.Enter new spider, with seals, into one of the
yokes.
4.Partially insert one bearing cup into yoke and
enter spider trunnion into bearing cup.
5.Insert opposite bearing cup in yoke.
6.Press both cups into place.
7.Press each cup into its respective location in
yoke up to lower land of circlip groove. Damage
may be caused to cups and seals if cups
pass this point.
8.Fit circlips and check no end float exists.
9.Engage spider in second yoke. Fit bearing cups
and circlips as described in steps 4 to 8.
10.Fit propeller shaft:
lFor front propeller shaft.

+ PROPELLER SHAFTS, REPAIRS,
Propeller shaft - front.
lFor rear propeller shaft.

+ PROPELLER SHAFTS, REPAIRS,
Propeller shaft - rear.

REAR AXLE
DESCRIPTION AND OPERATION 51-1
REAR AXLE DESCRIPTION AND OPERAT ION
Rear axle component layout
1Drive shaft
2'O' ring
3Hub bearing
4Stake nut
5Hub flange
6Breather tube
7Bolt
8Bolt
9Oil seal10Pinion flange
11Centralising peg
12Bolt
13Washer
14Differential unit
15Drain plug
16Axle casing
17Oil level plug
18'O' ring

REAR AXLE
51-2 DESCRIPTION AND OPERATION
Description
General
The rear axle consists of an axle casing with a differential unit attached to the right of the vehicle centre line. A wheel
hub is installed in each end of the axle casing and connected to the differential unit by a drive shaft.
Axle casing
The axle casing is of welded construction, with brackets on the casing exterior for attachment to the rear suspension.
A differential cover on the rear of the axle casing contains an oil level plug for checking and replenishment of the
differential unit lubricating oil. A magnetic drain plug is installed on the underside of the axle casing.
The interior of the axle casing is ventilated through a breather tube inserted in a red plastic sleeve in the top of the
casing. The open end of the breather tube is located between the chassis and the left rear wheelarch.
Differential unit
The differential unit is of the spiral bevel type, lubricated by splash oil. The unit consists of a differential carrier
attached to a pinion housing. In the pinion housing, the pinion is splined to a pinion flange which is secured with a bolt
and washer. An oil seal prevents leakage past the pinion flange.
Centralising peg
The centralising peg is a press fit in the centre of the pinion flange and provides a positive location for the rear
propellor shaft to ensure it is centralised with the flange.

REAR AXLE
DESCRIPTION AND OPERATION 51-3
Wheel hub
Section through wheel hub
1'O' ring
2Hub bearing
3Hub flange
4Wheel stud5Stake nut
6ABS sensor ring
7Drive shaft
8Axle casing
Each wheel hub consists of a hub flange pressed into a hub bearing.
The hub flange is splined to accept the outboard end of the drive shaft, which is secured to the hub flange with a stake
nut. Five studs are installed in the hub flange for the wheel nuts, and a threaded hole is provided for the brake disc
securing screw.
The outer race of the hub bearing is bolted to the end of the axle casing. An 'O' ring seals the joint between the outer
race and the axle casing to prevent leakage of differential lubricating oil. The hub bearing is a sealed unit which
contains twin opposed roller bearings, pre-packed with grease during manufacture. A toothed ABS sensor ring is
integrated into the inner race of the hub bearing. An opening in the outer race of the hub bearing accommodates the
ABS sensor.
Drive shaft
Each drive shaft consists of a solid rod, splined at both ends.

REAR AXLE
REPAIRS 51-5
REPAIRS
Differential - assembly
$% 51.15.01
Remove
1.Raise rear of vehicle.
WARNING: Do not work on or under a
vehicle supported only by a jack. Always
support the vehicle on safety stands.
2.Drain oil from differential.

+ MAINTENANCE, PROCEDURES,
Front and rear axle.
3.If same components are to be refitted,
reference mark propeller shaft and mating
components.
4.Remove 3 nuts and bolts securing flexible
coupling to pinion flange. Release propeller
shaft and tie aside.
5.Using tool LRT-51-008, extract the centralising
peg from the pinion flange. Remove the
centralising peg from the tool.6.Remove LH and RH rear brake discs.

+ BRAKES, REPAIRS, Brake disc -
rear.
7.Disconnect each ABS sensor multiplug.
8.Release each harness from brake hose and
hose bracket.
9.Remove 4 bolts securing each rear wheel hub
to rear axle.
M51 0041B
5
4
M51 0056
LRT-51-008