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Range Rover Classic. Manual - part 15

MAINTENANCE

MAINTENANCE

Clean, adjust and renew

1. Take great care when fitting spark plugs not to

cross-thread plug, otherwise costly damage to
cylinder head will result.

2. Clean or replace spark plugs as applicable.
3. It is essential that correct type of spark plugs are

fitted.

4. Incorrect grade of plugs may lead to piston

overheating and engine failure.

Remove

5. Disconnect battery negative lead. Remove H.T.

leads from spark plugs.

6. Remove plugs and washers.

Clean spark plugs

7. Fit plug into 14 mm adaptor of approved spark

plug cleaning equipment. Wobble plug in adaptor
with circular motion for three or four seconds
only with abrasive blast in operation. Important:
Excessive abrasive blasting will lead to severe
erosion of insulator nose. Continue to wobble
plug in adaptor with air only, blasting plug for a
minimum of 30 seconds: this will remove
abrasive grit from plug cavity.

8. Wire-brush plug threads; open gap slightly, and

vigorously file electrode sparking surfaces using
a point file. This operation is important to ensure
correct plug operation by squaring electrode
sparking surfaces.

9. Set electrode gap to recommended clearance.

10. Shows dirty plug.
11. Filing plug electrodes.
12. Clean plug, set to correct gap.

13. Test plugs in accordance with plug cleaning

machine manufacturers’ recommendations.

14. Satisfactory plugs can be refitted.
15. When pushing leads onto plugs, ensure that

shrouds are firmly seated.

Fitting H.T. leads

16. Ensure replacement H.T. leads are correctly

refitted as illustrated.
Failure to observe this instruction may result in
cross-firing between two closely fitted leads
which are consecutive in firing order.

MAINTENANCE

MAINTENANCE

CHECK/ADJUST VALVE CLEARANCES. - Tdi

Valve adjustment.

See GENERAL SPECIFICATION

DATA, Information, Engine - 300Tdi

RENEW FUEL FILTER ELEMENT - Tdi

Drain off water and sediment

CAUTION: It is essential that any water
and sediment in fuel filter is drained off, as
water in fuel can result in damage to

injection pump.

1. Hold a small receptacle beneath drain cock.

Unscrew the drain cock half a turn.

2. Drain off water and sediment.
3. Tighten the drain cock immediately fuel starts to

flow from drain cock.

NOTE: Any delay in tightening drain cock
when fuel starts to flow could possibly
mean bleeding fuel system.

Renew fuel filter element

1. Clean area around filter, place a container

beneath.

2. Unscrew filter, a quantity of fuel will be released,

and discard filter.

3. Wet seal of new filter with fuel.
4. Screw new filter into position.
5. Ensure that drain cock is secure.

CHECK POSITIVE CRANKCASE VENTILATION
(PCV) SYSTEM FOR LEAKS AND HOSES FOR
SECURITY AND CONDITION - V8

RENEW AIR CLEANER ELEMENT
- V8 CATALYST - Tdi
- V8 NON CATALYST

To renew air cleaner element

See FUEL SYSTEM, Repair, Air Cleaner

MAINTENANCE

MAINTENANCE

CLEAN ENGINE BREATHER FILTER - V8

1. Release hose clamp and pull hose off canister.
2. Unscrew canister and remove it from rocker

cover.

3. Remove large ’O’ ring from threaded end of

canister.

4. Visually inspect condition of wire screen within

canister, if in poor condition fit new assembly, if
in acceptable condition clean screen as follows:

5. Immerse canister in small amount of solvent and

allow solvent to dissolve and loosen any debris.

6. Remove canister from solvent and dry in still air.

WARNING: Do not use compressed air line
to remove remaining solvent or debris in
canister, this could cause fire or personal

injury.

Refitting breather/filter

1. Fit new rubber ’O’ ring.
2. Screw canister into rocker cover, hand tight only.
3. Refit hose, tighten clamp securely.

CLEAN PLENUM CHAMBER VENTILATION
PASSAGEWAY - V8

Cleaning plenum chamber ventilation passageway
can be carried out without removing plenum chamber
from ram housing.

CAUTION: Care must be taken to prevent
debris from passageway passing beyond
throttle butterfly disc.

WARNING: Safety glasses must be worn
when performing this operation. Ensure
that debris is not blown into atmosphere

which could be harmful to other persons closeby.

1. Disconnect battery negative lead.
2. Release hose clamp and remove hose from

plenum chamber inlet.

3. Remove crankcase ventilation hose from side of

plenum chamber.

4. Insert a piece of lint free cloth down throttle

butterfly bore to prevent debris passing throttle
butterfly.

5. Place a cloth over tube protruding from side of

plenum from which ventilation hose was
removed to prevent debris from passageway
being blown into atmosphere.

MAINTENANCE

MAINTENANCE

6. Use a compressed air line with a slim bent

nozzle to enable passageway to be cleaned out
from within throttle butterfly bore.

7. Any remaining matter can be dislodged using

soft bent wire or pipe cleaner. Finally blow out
passageway again to remove remaining debris.

8. Remove small ’T’ piece between crankcase

ventilation hoses and check it is free from
blockages, clean as necessary.

9. Refit ’T’ piece and hoses, tighten hose clamps

securely.

RENEW CHARCOAL CANISTER - V8

Charcoal canister

Remove

1. Disconnect battery negative lead.
2. Pry out purge valve.
3. Disconnect pipe.
4. Loosen bolt.
5. Remove charcoal canister.

Refit

6. Reverse removal procedure.

CHECK CONDITION OF DRIVE BELT - V8 - Tdi

RENEW - V8 - Tdi

Renew V8 drive belt.

See ENGINE, Repair, Drive

Belt - Renew

Renew Tdi drive belt.

See ENGINE, Repair, Drive

Belt - Renew

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