Discovery 2. Manual - part 26

MAINTENANCE

PROCEDURES

10-9

Air suspension intake filter

Check

1. Check condition of filter and that filter is clean, 

replace if necessary.
 

 + 

 REAR SUSPENSION, REPAIRS, 

Filter - intake - SLS.

Anti-freeze

Replace

1. Replace anti-freeze. 

 

 + 

 COOLING SYSTEM - Td5, 

ADJUSTMENTS, Drain and refill.
 

 + 

 COOLING SYSTEM - V8, 

ADJUSTMENTS, Drain and refill.

Cooling system

Check

1. Check cooling, intercooler and heating systems 

for leaks; hoses and oil pipes for security and 
condition.

2. Check accessible hose clips for tightness.
3. Check coolant level, top-up if necessary.

Top-up

1. With engine cold, remove expansion tank filler 

cap.

2. Top-up with recommended mixture of coolant 

until level reaches  mark on expansion tank.
 

 + 

 CAPACITIES, FLUIDS, 

LUBRICANTS AND SEALANTS, Anti-Freeze 
Concentration.

3. Fit expansion tank filler cap.

MAINTENANCE

10-10

PROCEDURES

Spark plugs - V8 engine

Replace

Take great care when fitting spark plugs not 
to cross-thread plug, otherwise costly 
damage to cylinder head will result. It is 
essential that correct grade of spark plugs 
are fitted. Incorrect grade of spark plugs 
may lead to piston overheating and engine 
failure. Use only approved spark plugs, use 
of unapproved spark plugs may cause the 
misfire detection system to malfunction.

1. Disconnect battery earth lead.
2. Noting their fitted position, disconnect ht leads 

from spark plugs.

3. Remove 8 spark plugs.
4. Ensure that  gap of new spark plugs is 1.0  

±

 

0.05 mm (0.040 

±

 0.002 in).

Do not attempt to clean or adjust gaps. If a 
spark plug problem exists, try substituting 
defective spark plug(s) with new one(s).

CAUTION: Do not attempt to clean or adjust 
spark plug gaps.  If a spark plug problem 
exists, try substituting the defective spark 
plug with a new one.

5. Fit spark plugs and tighten to 20 Nm (15 lbf.ft).

6. Connect ht leads to spark plugs.
7. Connect battery earth lead.

Air cleaner - V8 engine

Replace

1. Replace air cleaner element.

 

 + 

 ENGINE MANAGEMENT SYSTEM - 

V8, REPAIRS, Element - air filter.

Clean

1. Clean the drain hole in filter casing.

Air cleaner and dump valve - diesel 
engine

Replace/clean 

1. Replace air cleaner element. 

 

 + 

 ENGINE MANAGEMENT SYSTEM - 

Td5, REPAIRS, Element - air filter.

2. Remove all dirt from dump valve.

MAINTENANCE

PROCEDURES

10-11

Auxiliary drive belt

Check

TD5 auxiliary belt

V8 auxiliary belt

1 Tensioner pulley
2 Alternator
3 A/C compressor
4 ACE pump
5 Idler pulley - V8 only
6 PAS pump
7 Viscous fan pulley
8 Crankshaft pulley
9 Idler pulley - V8 only

1. Check auxiliary drive belt for signs of splits, 

fraying, oil contamination and wear.

Auxiliary drive belt - V8 engine

1. Replace auxiliary drive belt. 

 

 + 

 CHARGING AND STARTING, 

REPAIRS, Belt - auxiliary drive.

Auxiliary drive belt - diesel engine

Replace

1. Replace auxiliary drive belt. 

 

 + 

 CHARGING AND STARTING, 

REPAIRS, Belt - auxiliary drive.

MAINTENANCE

10-12

PROCEDURES

Fluid reservoirs

Check/top-up — Brake/Clutch reservoir

1. Check fluid level in brake/clutch fluid reservoirs.
2. Clean area around filler cap, remove cap. 
3. Top-up if necessary to correct level on reservoir 

using recommended fluid.
 

 + 

 CAPACITIES, FLUIDS, 

LUBRICANTS AND SEALANTS, Fluids.

4. Fit filler cap.

Check/top-up — PAS/ACE reservoirs

1. Check fluid level in PAS and ACE fluid 

reservoirs.

2. Clean area around filler cap, remove cap.
3. Top-up if necessary to correct level on reservoir 

using recommended fluid. 
 

 + 

 CAPACITIES, FLUIDS, 

LUBRICANTS AND SEALANTS, Fluids.

4. Fit filler cap.

Check/top-up — Washer reservoir

1. Check fluid level in windscreen washer 

reservoir.

2. Clean area around filler cap, remove cap.
3. Top-up if necessary to correct level on reservoir 

using recommended fluid. 
 

 + 

 CAPACITIES, FLUIDS, 

LUBRICANTS AND SEALANTS, Fluids.

4. Fit filler cap.