300Tdi Discovery
V8i
5
REPAIR
CYLINDER HEADS - RENEW
Service repair no - 12.29.15
1. Remove cylinder heads and gaskets.
See
Cylinder Head Gaskets - Renew
2. Remove spark plugs.
3. Using spring compressor LRT-12-034, remove
seals, valves, collets, springs and caps.
CAUTION: Keep components in fitted
order
4. From left hand cylinder head, remove earth lead
studs.
5. Remove three bolts securing power steering
pump mounting bracket to cylinder head.
6. Remove four bolts securing generator mounting
bracket to cylinder head.
7. Right hand cylinder head, remove rear lifting
bracket.
8. Fit lifting bracket to new right hand cylinder
head.
9. Fit mounting brackets and earth lead studs to
new cylinder head. Tighten bolts to
30 Nm.
10. Regrind valves- refer to engine overhaul
publication
11. Lubricate valve stems, fit valves, springs, and
caps. Fit new inlet and exhaust valve stem seals.
12. Using spring compressor LRT-12-034, compress
springs, fit collets. Tap valve to check correct
collet seating.
13. Fit spark plugs.
14. Fit cylinder heads with new gaskets.
See
Cylinder Head Gaskets - Renew
ROCKER COVER - RIGHT HAND - RENEW
Service repair no - 12.29.41
1. Disconnect battery negative lead.
2. Disconnect purge pipe from charcoal canister at
plenum.
3. Remove breather pipe from rocker cover.
4. Remove coolant pipes from inlet manifold.
5. Remove spark plug leads from plugs and
retaining clips.
6. Remove four rocker cover bolts. Moving fuel
pipes aside, remove rocker cover.
7. Discard rocker cover gasket.
8. Remove plug lead retaining clips from rocker
cover, fit to new rocker cover.
9. Clean and dry rocker cover and cylinder head
mating faces, using Bostik cleaner 6001.
NOTE: Gasket fits one way round only. It
must be fitted accurately, first time.
Subsequent movement will destroy
bonding.
10. Apply Bostik 1775 impact adhesive to rocker
cover seal face and gasket, using a brush to
ensure an even film. Allow adhesive to become
touch dry.
