44AUTOMATIC GEARBOX
8
REPAIR INHIBITOR SWITCH
Service repair no - 44.15.19
Remove
1.Site vehicle on a four post ramp [hoist].
2.Disconnect battery negative lead. Raise vehicle.
3.Disconnect inhibitor switch multi plug.
4.Remove inhibitor switch retaining plate.
5.Remove inhibitor switch.
6.Remove 'O' ring seal.
7.Clean inhibitor switch.
Refit
8.Clean mating face on casing.
9.Fit and lubricate new 'O' ring seal to switch.
10.Fit switch to casing.
11.Secure with retaining plate and bolt.
12.Connect multiplug to harness.
13.Reconnect battery and remove vehicle from
ramp [hoist].
SELECTOR SHAFT OIL SEAL
Service repair no - 44.15.34
Renew
1.Site vehicle on a four post ramp [hoist].
2.Disconnect battery negative lead.
3.Raise vehicle.4.Detach heat shield at front exhaust pipe to
manifold.
5.Disconnect electrics from Lambda sensors.
6.Remove catalytic converter assembly.
7.Remove chassis cross-member from under
gearbox.
8.Engage low range gear in the transfer gearbox.
9.Support transfer gearbox with a jack or
transmission hoist.
10.Remove transfer gearbox chassis mounting
bracket nuts and bolts. Note location of
speedometer cable bracket for refit.
11.Lower transmission to allow access to selector
shaft.
12.Remove selector lever from shaft.
13.Remove selector shaft seal from casing.
14.Clean selector shaft and seal mating faces.
15.Fit centre section of special tool LST 114 over
selector shaft.
16.Lubricate new oil seal and position seal on tool.
17.Fit tool outer sleeve and screw on nut to drive
seal into housing.
18.Remove tool from shaft.
19.Refit selector lever to shaft.
20.Raise transmission and secure mounting
brackets to chassis. Ensure speedometer cable
bracket is secured. Tighten bolts to
30Nm.
21.Remove support jack.
22.Refit chassis cross-member.
23.Refit catalytic converter assembly.
24.Connect electrics to Lambda sensors.
25.Connect heat shield front pipe to manifold.
26.Connect battery.
27.Check/top up gearbox oil level.
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 fittedwith 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.
The wheel hubs on axles with ABS brakes share the
same construction to non ABS axles except for the
addition of a sensor ring 11 on the brake disc 10.
Rear axle hub
1. Axle casing
2. Ventilation pipe
3. Axle shaft
4. Wheel studs and hub
5. Wheel bearing stub axle
6. Wheel bearings (2)7. Inner hub seal
8. Outer hub/axle shaft seal
9. Hub lock plate, thrust washer and nuts (2)
10. Brake disc
11. Sensor ring, ABS
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
internal 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 causing a leak and leave the differential
lacking lubrication.
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. Check also the differential level
and oil for metal particles 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 level giving a false impression that the
housing has been overfilled with oil.
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.
FRONT AXLE AND FINAL DRIVE
1
DESCRIPTION AND OPERATION DESCRIPTION
The welded steel front 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 front wheels via the axle shafts and
constant velocity joints which are totally enclosed in
the spherical and swivel housings.
The front axles fitted with ABS brakes or non ABS
brakes are of the same construction except for
different top swivel pins in the swivel housing and a
sensor on the constant velocity joint.
Front axle - ABS
The front wheels are pivoted on taper roller bearings
19 at the bottom of the swivel housing and a 'Rialco
bush' 25 at the top. The top swivel pin also houses the
ABS pickup (electrical connection) as shown in the
main illustration, J5367.
Front axle - non ABS
The front wheels are pivoted on tape roller bearings at
the top (see insert) and bottom of the swivel housing.
The wheel hubs on all axles are supported by two
taper bearings and driven by drive flanges which are
splined to the one piece, stub shaft/constant velocity
joint.
Lubrication
The differential, swivel pin housing and wheel hubs
are indiviudally lubricated and separated by oil seals 7
and 8 to prevent oil transfer across the axle when the
vehicle is traversing steep inclines. The wheel
bearings are lubricated with grease and the swivel
housing and differential with oil.
Ventilation
Ventilation of the differential is through a plastic pipe 2
which terminates at a high level in the vehicle on both
ABS and non ABS axles. The swivel housings
ventilate through axle shaft oil seals 8 into the
differential and the hub bearings vent via the oil seals
into swivel housing.
FRONT AXLE AND FINAL DRIVE
1
FAULT DIAGNOSIS FAULT DIAGNOSIS
Complaint - Oil leaks
An external leak of lubrication can be caused by a
faulty internal seal. For example, if the seals which
separate the differential from the swivel housings are
faulty and the vehicle is operating or parked on an
embankment, oil may leak across the axle leaving one
swivel with a high level and the other swivel and
differential lacking lubrication.
See 'Description and Operation' for illustrations of oil
seal locations.
When investigating leaks or checking oil levels, it is
essential that all the lubrication is drained from any
housing with a high level and that the other levels are
checked.
Swivel oil should be checked for signs of grease
leaking from the hub bearings and the hub grease
should not contain oil.
Check that the axle ventilation system is clear, as a
blockage can cause internal pressure to force oil past
the seals.
If the vehicle is driven in deep water with defective oil
seals, water may contaminate the lubricants and when
checked, give a false impression that the housing has
been overfilled with oil.
Do not assume that a high oil level is due to over
filling or, that a low level is because of an external
leak.
FRONT AXLE AND FINAL DRIVE
7
OVERHAUL Fit driveshaft and stub axle
59.Insert axle shaft, and when differential splines
are engaged, push assembly in fully.
CAUTION: Take care not to damage axle
shaft oil seals.
60.Place a new joint washer in position on swivelpin
housing to stub axle mating face. Coat threads
of stub axle bolts with Loctite 270.
61.Fit stub axle with flat at 12 o'clock position.
CAUTION: Ensure that constant velocity
joint bearing journal is butted against
thrust ring on stub axle. Before stub axle
is secured.
62.Place mud shield in position and secure stub
axle to swivel pin housing with six bolts and
tighten evenly to
65 Nm.
63.Fit brake jump hoses to brake jump hose
bracket.
64.Fit front hub complete assembly.
See Repair,
Front Hub Assembly
65.Check swivel pin housing oil drain plug is fitted.
66.Fill swivel assembly to correct level, with new oil.
See SECTION 10, Maintenance, Under
Vehicle Maintenance
67.Set steering lock stop bolts to provide a
clearance of 20mm.
See STEERING,
Adjustment, Steering Lock Stops
FRONT STUB AXLE, CONSTANT VELOCITY JOINT
AND SWIVEL PIN HOUSING ABS
Service repair no - 60.15.43.
Remove stub axle, axle shaft and constant
velocity joint.
1.Remove front hub assembly.
See Repair,
Front Hub Assembly
2.Drain swivel pin housing and refit plug.
3.Remove six bolts retaining stub axle to swivel
housing.
4.Remove mud shield.
5.Remove stub axle and joint washer.
6.Pull out axle shaft and constant velocity joint
from axle casing.
FRONT AXLE AND FINAL DRIVE
11
OVERHAUL Fit driveshaft and stub axle
59.Insert axle shaft, and when differential splines
are engaged, push assembly in fully.
CAUTION: Take care not to damage axle
shaft oil seals.
60.Place a new joint washer in position on swivelpin
housing to stub axle mating face. Coat threads
of stub axle bolts with Loctite 270.
61.Fit stub axle with flat at 12 o'clock position.
CAUTION: Ensure that constant velocity
joint bearing journal is butted against
thrust ring on stub axle. Before stub axle
is secured.
62.Place mud shield in position and secure stub
axle to swivel pin housing with six bolts and
tighten evenly to
65 Nm.
63.Fit brake jump hoses to brake jump hose
bracket.
64.Fit front hub complete assembly.
See Repair,
Front Hub Assembly
65.Check swivel pin housing oil drain plug is fitted.
66.Fill swivel assembly to correct level, with new oil.
See SECTION 10, Maintenance, Under
Vehicle Maintenance
67.Set steering lock stop bolts to provide a
clearance of 20mm.
See STEERING,
Adjustment, Steering Lock Stops
68.Fit ABS brake sensor.See BRAKES, Repair,
Sensors - Front
57STEERING
4
FAULT DIAGNOSIS Symptom:-
Fluid leaks from steering box seals.
CAUTION: The steering wheel must not be
held on full lock for more than 30 seconds
in one minute, as this may overheat the
fluid and cause damage to the oil seals.
1.Check fluid level.
See Repair, Power Steering
Fluid Reservoir
Check fluid pressure.See Power Steering
System - Test
2.Is pressure high?
YES - Renew pump.
See Repair, Power
steering Pump
If oil seal leaks persist after renewing the
pump.
See Overhaul, Power Steering
Box
NO -See Overhaul, Power Steering Box
Symptom:-
Insufficient power assistance - castor return
action normal.
1.Are tyres correct type and pressure?
NO -
See GENERAL SPECIFICATION DATA,
Information, Wheels and Tyres
YES - Continue.
2.Is fluid level correct?
NO - Check fluid level
See Repair, Power
Steering Fluid Reservoir
YES - Check system for air locks.See Repair,
Power Steering System - Bleed
3.Is pressure correct?
NO - Check fluid pressure.
See Power
Steering System - Test
If pressure is not correct after bleeding
the system, renew pump.
See Repair,
Power Steering Pump
YES -See Overhaul, Power Steering Box
Symptom:-
Steering heavy - stiff, poor castor return action.
1.Are tyres correct type and pressure?
NO -
See GENERAL SPECIFICATION DATA,
Information, Wheels and Tyres
YES - Check universal joints for seizure and
correct alignment.
See Repair, Lower
Steering Shaft and Universal Joints
Check power steering box adjustments.
See Overhaul, Power Steering Box
2.Is the power assistance satisfactory?
NO - See fault symptomInsufficient
assistance, (castor return action
normal).
YES - Disconnect drag link from drop arm and
check steering column and box for
stiffness.
See Repair, Drag Link and
Drag Link Ends
3.Is the steering stiff with the drag link
disconnected?
NO - Check steering ball joints for seizure and
axle swivels lubrication and resistance.
See Repair, Drag Link and Drag Link
Ends See FRONT AXLE AND FINAL
DRIVE, Overhaul, Front Stub Axle,
Constant Velocity Joint and Swivel Pin
Housing Non ABS See FRONT AXLE
AND FINAL DRIVE, Overhaul, Front
Stub Axle, Constant Velocity Joint and
Swivel Pin Housing ABS
YES - Disconnect the lower steering shaft and
check the column and box for stiffness.
See Repair, Lower Steering Shaft and
Universal Joints
4.Is the steering column stiff to turn when
disconnected from the box?
NO - Remove and overhaul box.
See
Overhaul, Power Steering Box
YES - Adjust steering column.See Stiff
Steering Checklist