maintenance LAND ROVER DISCOVERY 1995 Owner's Manual

MAINTENANCE
15
MAINTENANCE
RENEW FRONT AND REAR AXLE OIL
1.Site vehicle on lift or level ground. Place
container under axle to be drained.
2.Using a 13mm square drive wrench, remove
drain and filler/level plugs from axle. Allow oil to
drain completely. Clean and refit drain plug.
3.Inject new oil of recommended make and grade
until it reaches level hole. Clean and refit
filler/level plug and wipe away surplus oil.
CHECK/TOP UP FRONT AND REAR AXLE OIL
1.Site vehicle on lift or level ground.
2.Using a 13mm square drive wrench, remove
filler/level plug from axle.
3.If necessary inject new oil of recommended
make and grade until it reaches level hole. Clean
and refit filler/level plug and wipe away surplus
oil.
CHECK/TOP UP SWIVEL PIN HOUSING OIL
RENEW SWIVEL PIN HOUSING OIL
1.Site vehicle on lift or level ground. Place
container under swivel to be drained.
2.Remove drain and level plugs, allow oil to drain
completely, clean and refit drain plug.
3.Remove filler plug and inject recommended
make and grade of oil it reaches level hole.
4.Clean and refit level and filler plugs, wipe away
any surplus oil.

10MAINTENANCE
16
MAINTENANCE
LUBRICATE PROPELLER SHAFT SLIDING , AND
UNIVERSAL JOINTS
1.Clean all grease nipples on front and rear
propeller shafts.
2.Using a low pressure hand grease gun, apply
recommended grease, to grease nipples at front
and rear propeller shaft universal and sliding
joints.
NOTE: The rear propeller shaft flexible
coupling is not fitted with a grease nipple.
CHECK VISUALLY BRAKE, FUEL, CLUTCH
PIPES/UNIONS FOR CHAFING LEAKS AND
CORROSION
CHECK EXHAUST SYSTEM FOR LEAKS,
SECURITY AND DAMAGE
CHECK FOR FLUID LEAKS FROM POWER
STEERING AND SUSPENSION SYSTEMS,
HYDRAULIC PIPES AND UNIONS FOR CHAFING
AND CORROSION
CHECK/TIGHTEN STEERING UNIT AND STEERING
ROD BALL JOINT FIXINGS, CHECK CONDITION
OF OF BALL JOINTS AND DUST COVERS
Ball joints are lubricated for their normal life during
manufacture and require no further lubrication. This
applies ONLY if rubber boot has not been dislodged
or damaged. Joints should be checked at specified
mileage intervals but more frequently if vehicle is used
under arduous conditions.
1.Check for wear in joints by moving ball joint up
and down vigorously. If free movement is
apparent fit a new joint assembly.

MAINTENANCE
17
MAINTENANCE
CHECK/TIGHTEN FRONT AND REAR AXLE
SUSPENSION LINK FIXINGS, CHECK CONDITION
OF MOUNTING RUBBERS
DRAIN FUEL SEDIMENTER - Tdi
Fuel sedimenter
The sedimenter is attached to left-hand side of
chassis frame near fuel tank. It increases the working
life of the fuel filter by removing larger droplets of
water and larger particles of foreign matter from fuel.
Drain off water
1.Loosen drain plug, allow water to run out.
Tighten plug immediately pure diesel fuel starts
to flow.
RENEW FUEL FILTER
WARNING: Ensure that fuel handling
precautions given in Section 01 -
Introduction regarding fuel handling are
strictly adhered to when carrying out following
instructions.
See INTRODUCTION, Information,
Fuel Handling Precautions
WARNING: The spilling of fuel is
unavoidable during this operation. Ensure
that all necessary precautions are taken to
prevent fire and explosion.
1.Depressurise fuel system.
See FUEL SYSTEM,
Repair, Depressurising Fuel System
2.The fuel line filter is located on right hand
chassis side member forward of fuel tank filler
neck. Access to filter is gained through right
hand rear wheel arch.
3.Thoroughly clean area around hose connections
to prevent ingress of foreign matter into fuel
system.
4.Loosen two fuel unions and remove hoses from
filter canister.
5.Release securing bolt and bracket, remove filter
from chassis side member.
6.Fit a new filter observing direction of flow arrow
on canister.
7.Fit inlet and outlet hoses. Tighten to
30 Nm.
8.Refit fuel pump relay.
9.Reconnect battery negative lead.
10.Recode radio.
11.Start engine and inspect hose connections for
fuel leaks.

10MAINTENANCE
18
MAINTENANCE
ABS VEHICLES - CHECK ROAD WHEEL SPEED
SENSOR ELECTRICAL HARNESS FOR DAMAGE
RENEW OXYGEN SENSORS
See EMISSION CONTROL, Repair, Heated
Oxygen Sensor (HO2S)
RENEW CATALYTIC CONVERTERS
See MANIFOLD AND EXHAUST SYSTEM, Repair,
Exhaust System Complete
REPORT ANY UNUSUAL FEATURES OF VEHICLE
CONDITION AND ADDITIONAL WORK REQUIREDCARRY OUT ROAD TEST
For details of dynamometer testing.See
INTRODUCTION, Information, Dynamometer
Testing - Non Anti-lock brake vehicles See
INTRODUCTION, Information, Dynamometer
Testing - Vehicles with Anti-lock brakes (ABS)
Check following items:
1.Inhibitor switch only operates in P and N.
2.Engine for excessive noise.
3.Clutch for slip, judder or spin.
4.Automatic gear selection/shift speeds.
5.Gear selection/noise - high/low range.
6.Steering for abnormal noise/effort.
7.Steering for free play.
8.All instruments, gauges and warning indicators.
9.Heater and air conditioning systems.
10.Heated rear screen.
11.Shock absorbers - ride irregularities.
12.Foot brake, on emergency stop, pulling to one
side, binding, pedal effort.
13.Parkbrake efficiency.
14.Seat reclining and latching.
15.Fully extend seat belt, check operation of
retraction and latching. Inertia belts lock when
snatched or vehicle on slope.
16.Road wheel balance.
17.Transmission for vibrations.
18.Body noises, squeaks and rattles.
19.Excessive exhaust smoke.
20.Engine idle speed.
21.Endorse service record.
22.Report any unusual features of vehicle condition
and additional work required.
ENDORSE SERVICE RECORD

MAINTENANCE
19
MAINTENANCE
RESET EMISSION MAINTENANCE REMINDER -
USA
The emission maintenance reminder is designed to
activate at 52,500 and 105,000 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.
ABS vehicles only - renew hydraulic brake fluid and
flexible hoses examine the working surfaces of the
caliper cylinders and renew the seals or cylinders
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.
ABS vehicles used extensively in arduous off-road
conditions - check the rear wheel road speed sensor
for abrasive wear.

V8i
5
DESCRIPTION AND OPERATION Distributor and timing chain lubrication
The distributor and timing chain are lubricated from
the camshaft front bearing. The feed to the timing
chain is channelled along the camshaft sprocket, key
and spacer where it sprays onto the chain.
1. Bearing
2. Camshaft
3. Key
4. Camshaft timing chain sprocket
5. Spacer
6. Distributor drive gearHydraulic tappets
1. Clip
2. Pushrod seat
3. Inner sleeve
4. Upper chamber
5. Non-return ball valve
6. Spring
7. Outer sleeve
8. Lower chamber - high pressure
The purpose of the hydraulic tappet is to provide
maintenance free and quiet operation of the inlet and
exhaust valves. It achieves its designed purpose by
utilizing engine oil pressure to eliminate the
mechanical clearance between the rockers and the
valve stems.
During normal operation, engine oil pressure present
in the upper chamber 4, passes through the
non-return ball valve 5 and into the lower (high
pressure) chamber 8.
When the cam begins to lift the outer sleeve 7, the
resistance of the cylinder valve spring felt through the
pushrod seat 2, causes the inner sleeve 3, to move
downwards inside the outer. This slight downward
movement of the inner sleeve closes the ball valve 5
and increases the hydraulic pressure in the high
pressure chamber, sufficient to ensure that the push
rod opens the valve fully.
As the tappet assembly moves off the peak of the cam
the ball valve 5 opens to equalize the pressure in both
chambers which ensures that the valve fully closes
when the tappet is on the back of the cam.

V8i
15
REPAIR OIL SUMP
Service repair no - 12.60.44
Remove
1.Drain engine oil
See SECTION 10,
Maintenance, Under Vehicle Maintenance
2.Fit drain plug. Tighten to40 Nm.
3.If fitted, disconnect low oil level sensor multiplug.
4.Remove bolt securing dipstick tube to rocker
cover.
5.Working form the centre outwards, progressively
loosen and remove 17 bolts securing sump.
Remove sump.
6.Remove all traces of sealant from mating
surfaces of sump, cylinder block and front cover,
using a suitable solvent or plastic scraper.
7.Degrease mating surfaces of sump, cylinder
block and front cover.Refit
8.Apply RTV Hylosil White sealant to mating
surface of sump.
9.Position sump, tighten bolts finger tight.
10.Tighten bolts progressively in sequence shown.
Tighten to
18 Nm.
11.Fit bolt securing dipstick tube to rocker cover.
12.If fitted, connect low oil level sensor multiplug.

Mpi
1
REPAIR CAMSHAFT FRONT OIL SEAL
Service repair no - 12.13.07 - Exhaust
Service repair no - 12.13.09 - Inlet
Remove
1.Disconnect battery negative lead.
2.Remove drive belt.
See SECTION 10,
Maintenance, Under Bonnet [Hood]
Maintenance
3.Remove 5 bolts, timing belt upper cover.
4.Remove timing belt upper cover.
5.Remove 5 bolts, timing belt centre cover.
6.Remove timing belt centre cover.
7.Rotate crankshaft to align camshaft gear timing
marks - 90°B.T.D.C.
8.Fit tool LRT-12-058 to lock flywheel.
9.Fit tool LRT-12-060 to lock camshaft gears.
10.Loosen camshaft belt tensioner bolt.
11.Move tensioner away from belt and tighten
tensioner bolt.
12.Remove belt from camshaft gears.

Mpi
3
REPAIR
For torque values.See Specifications, torque,
Torque Values
3.Fit timing belt upper backplate and tighten bolts
to the correct torque.
4.Fit camshaft gears noting the 'IN' and
'EXHAUST' identifying marks.
5.Fit, but do not tighten, camshaft gear centre
bolts.
6.Ensure timing marks are aligned.
7.Fit camshaft locking tool LRT-12-060.
8.Tighten camshaft gear bolts to the correct
torque.
9.Fit timing belt.
See Camshaft Drive Belt
10.Adjust timing belt tension.
11.Remove tool LRT-12-058 from flywheel.
12.Fit timing belt centre cover and tighten bolts to
correct torque.
13.Fit timing belt upper cover and tighten bolts to
correct torque.
14.Fit drive belt.
See SECTION 10, Maintenance,
Under Bonnet [Hood] Maintenance
15.Reconnect battery negative lead.INLET - EXHAUST CAMSHAFT REAR OIL PLUG
Remove
1.Remove cylinder head.
2.Lever out, camshaft rear oil seal plug.
Refit
1.Clean plug housing.
2.Fit new plug applying force to outer edge only.
3.Refit cylinder head.

12ENGINE
6
REPAIR ENGINE
Service repair no - 12.41.01
Remove
1.Site vehicle onto ramp [hoist].
2.Remove the drive belt.
See SECTION 10,
Maintenance, Under Bonnet [Hood]
Maintenance
3.Remove radiator.See COOLING SYSTEM,
Repair, Radiator - Mpi
4.Remove bonnet [hood].See CHASSIS AND
BODY, Repair, Bonnet [Hood]
5.Drain engine oil.
6.Position absorbent cloth around fuel pipe to fuel
rail union.
Unscrew union to relieve pressure.
CAUTION: Plug the connections
7.Release clip and disconnect hose from coolant
pump.
8.Release clip and disconnect hose from heater
rail.