LAND ROVER DEFENDER 1999 Workshop Manual

47PROPELLER SHAFTS
2
OVERHAUL PROPELLOR SHAFT - REAR
Service repair no - 47.15.12
Remove
1.Remove rear propeller shaft.See Repair.
2.Thoroughly examine universal joint for signs of
damage or wear.
3.Clean universal joint bearing cups and circlips.
CAUTION: To ensure correct assembly
and reduce possibility of imbalance,
before removing propeller shaft joint mark
position of spider pin relative to journal yoke ears.
4.Remove circlips.
5.Remove grease nipple.
6.Tap yokes to eject bearing cups.
7.Remove bearing cups.
8.Remove spider.
9.Clean yokes and bearing cup locations.Refit
10.Remove bearing cups from new spider.
11.Check all needle rollers are present and
positioned in bearing cups.
12.Enter new spider with seals into yokes of
propeller shaft flange.
13.Partially insert one bearing cup into flange yoke
and enter spider trunnion into bearing cup.
14.Insert opposite bearing cup into flange yoke.
15.Press both cups into place.
16.Press each cup into its respective yoke up to
lower land of circlip groove. Damage may be
caused to cups and seals if cups pass this point.
17.Fit circlips and check no end float exists.
18.Fit grease nipple and lubricate.
19.Repeat instructions for opposite end of propeller
shaft as described in 3 to 9.
20.Fit rear propeller shaft.See Repair.
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51 - REAR AXLE AND FINAL DRIVE
CONTENTS
Page
DESCRIPTION AND OPERATION
DESCRIPTION 1.....................................................................................................
FAULT DIAGNOSIS
FAULT DIAGNOSIS 1.............................................................................................
REPAIR
REAR AXLE 1.........................................................................................................
REAR HUB ASSEMBLY - 90 3...............................................................................
DIFFERENTIAL ASSEMBLY - 90 5........................................................................
OVERHAUL
DIFFERENTIAL ASSEMBLY - 110/130 1...............................................................
REAR HUB ASSEMBLY - 90 10.............................................................................
REAR STUB AXLE - 90 12.....................................................................................
REAR STUB AXLE - 110/130 13............................................................................
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REAR AXLE AND FINAL DRIVE
1
DESCRIPTION AND OPERATION DESCRIPTION
The welded steel rear axle casing houses a separate
spiral bevel type differential unit, which is off set to the
right of the vehicle centre line. The differential unit
drives the rear wheels via the axle shafts and fully
floating hubs which are mounted on tapered roller
bearings.
Lubrication
The differential is lubricated with oil and the hub
bearings with grease.The hub bearings are fitted with inner and outer seals.
The outer seals prevent the differential oil mixing with
the hub grease and the inner seals prevent dirt
ingress into the hub.
Ventilation
Ventilation of the hub bearings is through the outer oil
seals and the differential ventilation pipe, which
terminates at a high level.
Rear axle hub - 90
1.Axle casing
2.Ventilation pipe
3.Axle shaft
4.Wheel studs and hub
5.Wheel bearing stub axle6.Wheel bearings
7.Inner hub seal
8.Outer hub/axle shaft seal
9.Hub lock plate, thrust washer and nuts
10.Brake disc
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51REAR AXLE AND FINAL DRIVE
2
DESCRIPTION AND OPERATION
Rear axle hub - 110/130
1.Axle casing
2.Ventilation pipe
3.Axle shaft
4.Wheel studs and hub
5.Wheel bearing stub axle
6.Wheel bearings
7.Inner hub seal8.Outer hub/axle shaft seal
9.Hub lock plate, thrust washer and nuts
10.Brake disc
11.Drive flange
12.Drive shaft circlip
13.Dust cap
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REAR AXLE AND FINAL DRIVE
1
FAULT DIAGNOSIS FAULT DIAGNOSIS
Complaint - Oil leaks
An external leak of lubrication from the hub seals can
be caused by a faulty internal seal. For example, if the
seals which separate the differential from the hubs are
faulty and the vehicle is operating or parked on an
embankment, oil from the differential may flood one
hub resulting in a lack of lubrication in the differential.
When a seal is found to be leaking check the axle
ventilation system, as a blockage can cause internal
pressure to force oil past the seals.
See’Description and Operation’for illustrations of oil
seal locations.
When investigating hub seal leaks check the grease
for dilution with oil. Also check the differential oil level,
for signs of metal particles in the oil and the condition
of internal seals.
If the vehicle is driven in deep water with defective oil
seals, water may contaminate the lubricants and raise
the differential oil level, giving a false impression that
the housing has been over filled.
Do not assume that a high oil level in the
differential is due to over filling or, that a low level
is because of an external leak.
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REAR AXLE AND FINAL DRIVE
1
REPAIR REAR AXLE
Service repair no - 51.25.01
Remove
WARNING: Remove and refit of axle
requires a further two persons to steady
the axle when lowering or repositioning
axle.
1.Drain brake system.
2.Support chassis rear.
3.Remove road wheels.
4.Support axle weight with hydraulic jack.
5.Disconnect shock absorbers.
6.Disconnect flexible brake hose at RH chassis
side member and breather hose at banjo
connection on axle casing.
7.Disconnect lower links at axle.8.Mark differential and propeller shaft flanges with
identification marks for assembly.
9.Remove 4 nuts and bolts, lower propeller shaft
and tie to one side.
10.Disconnect pivot bracket ball joint at axle
bracket.
11.Release bolts and remove coil spring retaining
plates.
12.Lower axle and remove road springs.
13.If applicable, remove anti-roll bar links at axle
See REAR SUSPENSION, Repair. anti-roll
bar.
14.Remove axle assembly.
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51REAR AXLE AND FINAL DRIVE
2
REPAIR Refit
15.Position axle and fit lower links. Tighten fixings
to176 Nm (130 lbf/ft).
16.If applicable, fit anti-roll bar links to axleSee
REAR SUSPENSION, Repair. Anti-roll bar
links.
17.Raise axle and locate road springs.
18.Fit coil spring retaining plates and secure with
fixing bolts.
19.Secure pivot bracket ball joint to axle bracket.
Tighten fixing to176 Nm (130 lbf/ft).
20.Align propeller shaft to differential drive flange
and tighten fixings to47 Nm (35 lbf/ft).
21.Reconnect flexible brake hose and axle breather
hose.
22.Refit shock absorbers.
23.Fit road wheels and tighten to correct torque:
Alloy wheels -130 Nm (96 lbf/ft)
Steel wheels -100 Nm (80 lbf/ft)
Heavy Duty wheels -170 Nm (125 lbf/ft)
24.Remove rear chassis support.
25.Bleed brake systemSee BRAKES, Repair.
brake system bleed.
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REAR AXLE AND FINAL DRIVE
3
REPAIR REAR HUB ASSEMBLY - 90
Service repair no - 64.15.01
Remove
1.Place rear axle onto axle stands and remove
road wheel.
2.Release brake hose clips and remove brake
caliper bolts. Secure to one side.
WARNING: Take care not to kink brake
hose.
3.Remove 5 bolts and withdraw axle shaft.
4.Remove joint washer.
5.Bend back lock washer tabs.
6.Remove locknut and lock washer.
7.Remove hub adjusting nut.
8.Remove spacing washer.
9.Remove hub and brake disc assembly complete
with bearings.
Rear hub components - 90
1.Axle shaft.
2.Axle shaft joint washer.
3.Axle shaft retaining bolt.
4.Lock nut.
5.Lock washer.
6.Hub adjusting nut.
7.Spacing washer.8.Outer bearing.
9.Hub.
10.Inner bearing.
11.Grease seal.
12.Brake disc.
13.Disc retaining bolt.
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