Discovery 2. Manual — part 160

REAR AXLE

DESCRIPTION AND OPERATION

51-3

Wheel hub

Section through wheel hub

1 'O' ring
2 Hub bearing
3 Hub flange
4 Wheel stud

5 Stake nut
6 ABS sensor ring
7 Drive shaft
8 Axle 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

REAR AXLE

51-6

REPAIRS

10. Release and remove wheel hubs and drive

shafts from rear axle. Remove and discard 'O'
rings from wheel hubs.

11. Remove 10 bolts securing differential to axle.

Release and remove differential from axle.

Refit

1. Clean drive shafts, wheel hubs and wheel hub

locations in rear axle.

2. Using a suitable solvent, remove all traces

sealant from differential and axle mating faces.

3. Apply sealant, Part No. STC 3811 to differential

or axle mating face.

4. Apply sealant, Part No. STC 50552 to threads

of differential securing bolts.

5. Fit differential to axle, fit bolts and tighten to 55

Nm (41 lbf.ft).

6. Clean pinion flange and centralising peg.
7. Using a tubular drift, fit centralising peg to

pinion flange. Ensure that the large diameter
part of the centralising peg is below pinion
flange mounting surface.

8. Position propeller shaft and align reference

marks.

9. Fit nuts and bolts securing flexible coupling to

pinion flange and tighten to 76 Nm (56 lbf.ft)

10. Lubricate 2 new wheel hub 'O' rings with clean

differential oil.

+

CAPACITIES, FLUIDS,

LUBRICANTS AND SEALANTS,
Lubrication. Install 'O' rings on wheel hubs.

11. Fit LH and RH drive shafts and wheel hubs to

rear axle. Fit wheel hub bolts and tighten to 100
Nm (74 lbf.ft).

12. Connect each ABS sensor multiplug and

secure harness to harness bracket and brake
hose.

13. Fit LH and RH rear brake discs.

+

BRAKES, REPAIRS, Brake disc -

rear.

14. Remove stand(s) and lower vehicle.
15. Fill differential with oil.

+

MAINTENANCE, PROCEDURES,

Front and rear axle.

M51 0042B