Defender 90 NAS. Manual — part 14
MAINTENANCE
15
MAINTENANCE
CARRY OUT ROAD OR ROLLER TEST
WARNING: Two wheel roller tests must be
restricted to 8 mph, 5km/hour. Do not
engage the differential lock or the vehicle
will drive off the test rig because the vehicle is in
permanent four wheel drive.
For details of dynamometer testing.
See
INTRODUCTION, Information, Dynamometer
Testing
Check following items:
1. Inhibitor switch only operates in ’P’ and ’N’.
2. Engine for excessive noise.
3. Automatic gear selection/shift speeds.
4. Gear selection/noise - high/low range.
5. Steering for abnormal noise/effort.
6. Steering for free play.
7. All instruments, gauges and warning indicators.
8. Heater and air conditioning systems.
9. Heated rear screen.
10. Shock absorbers - ride irregularities.
11. Foot brake, on emergency stop, pulling to one
side, binding, pedal effort.
12. Park brake operation.
13. Seat reclining and latching.
14. Fully extend seat belt, check operation of
retraction and latching. Inertia belts lock when
snatched or vehicle on slope.
15. Road wheel balance.
16. Transmission for vibrations.
17. Body noises, squeaks and rattles.
18. Excessive exhaust smoke.
19. Engine idle speed.
20. Endorse service record.
21. Report any unusual features of vehicle condition
and additional work required.
ENDORSE SERVICE RECORD
RESET EMISSION MAINTENANCE REMINDER -
USA
The emission maintenance reminder is designed to
activate at 82,500 and 165,000 miles respectively and
will illuminate a ’Service Engine’ RED warning light in
instrument binnacle.
The emission maintenance reminder must be reset
after required maintenance has been carried out and
a new tamperproof label fitted by a Land Rover of
North America dealer. This emission maintenance
reminder is part of the Emission Control System
Reset
1. The control unit is located in the passenger
footwell.
2. Identify control unit and remove from plug.
3. Remove tamperproof label to reveal access hole
for resetting.
4. Place a thin metallic probe into access hole and
momentarily electrically short between reset pins
inside unit.
RECOMMENDED SERVICE ITEMS
Refer Service Schedule sheets for intervals.
Clean sunroof drain tubes, clean and lubricate guide
rails and slides.
Renew the hydraulic brake fluid.
See BRAKES,
Repair, Brake System Bleed
Renew all hydraulic brake fluid, seals, brake servo
filter and flexible hoses.
All working surfaces of the master cylinder and caliper
cylinders should be examined and renewed where
necessary.
Air cleaner - When the vehicle is used in dusty or field
conditions or deep wading, frequent attention to the
air cleaner may be required.
MAINTENANCE
1
SPECIFICATIONS, TORQUE
TORQUE SETTINGS
Nm
lbf ft
Road wheel nuts
130
. . . . . . . . . . . . . . . ..
95
Spark plugs
20
. . . . . . . . . . . . . . . . . ..
15
Automatic gearbox drain plug
10
. . . . . . . . . . ..
8
Transfer box drain/filler plugs
30
. . . . . . . . . . ...
22
Fuel filter hose/pipe unions
30
. . . . . . . . . . . ..
22
Steering box drop arm nut
175
. . . . . . . . . . . .
130
Steering box to chassis
80
. . . . . . . . . . . . .
60
Steering box tie-rod
80
. . . . . . . . . . . . . . ..
60
Front radius arm to chassis
200
. . . . . . . . . . . ..
150
Rear radius arm to axle
175
. . . . . . . . . . . . .
130
Bottom link to axle/chassis
175
. . . . . . . . . . . ...
130
4.0 V8
1
REPAIR
CRANKSHAFT REAR OIL SEAL
Service repair no - 12.21.20
Remove
1. Disconnect battery negative lead.
2. Remove drive plate.
See ENGINE 4.0 V8,
Repair, Drive Plate
3. Remove oil seal from location.
CAUTION: Do not damage seal location or
running surface on crankshaft.
Refit
4. Ensure both seal location and running surface
on crankshaft are clean.
5. Ensure mating faces of flywheel and crankshaft
are clean.
6. Lubricate seal guide LRT-12-095 with clean
engine oil. Position over crankshaft boss.
7. Lubricate oil seal lip.
8. Position seal squarely. Remove guide.
9. Drift seal into location using LRT-12-091.
10. Fit drive plate.
See ENGINE 4.0 V8, Repair,
Drive Plate
11. Reconnect battery negative lead.
12
ENGINE
2
REPAIR
DRIVE PLATE
Service repair no - 12.53.13
Remove
1. Remove gearbox and transfer box assembly.
See AUTOMATIC GEARBOX, Repair,
gearbox and transfer box assembly
2. Remove 4 clamp ring bolts. Collect clamp ring.
3. Remove flexible drive plate/starter ring gear
assembly from hub aligner.
4. Remove 6 screws from hub aligner. Remove hub
aligner from crankshaft. Collect shim.
5. Check drive plate for distortion or cracks. Check
starter ring gear for chipped or broken teeth. If
either component shows signs of damage, fit a
new assembly.
Refit
6. Ensure all mating surfaces are clean.
7. Fit shim and hub aligner to crankshaft.
8. Fit hub aligner screws and tighten to
85 Nm, 63
lbf ft.
9. Fit drive plate and clamp ring.
10. Fit clamp ring bolts and tighten to
45 Nm, 33 lbf
ft.
NOTE: It is only necessary to reshim the
drive plate when a new crankshaft or hub
aligner is fitted.
11. Fit gearbox and transfer box assembly.
See
AUTOMATIC GEARBOX, Repair, gearbox
and transfer box assembly
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