300Tdi Discovery
12
ENGINE
10
REPAIR
ROCKER COVER GASKET - LEFT HAND
Service repair no - 12.29.40 - LH Cover Gasket
Service repair no - 12.29.41 - RH Cover Gasket
Remove
1. Disconnect battery negative lead.
2. Remove plenum chamber.
See FUEL SYSTEM
SFI, Repair, Plenum Chamber
3. Remove screw securing dipstick tube to rocker
cover.
4. Release plug leads from guide clips and
disconnect from 4 spark plugs.
5. Remove 4 bolts securing rocker cover to cylinder
head.
6. Remove rocker cover.
7. Remove and discard rocker cover gasket.
Refit
8. Clean mating faces between rocker cover and
cylinder head using Bostick cleaner 6001 or
equivalent. Allow to dry.
NOTE: Gasket fits one way round only. It
must be fitted accurately, first time.
Subsequent movement will destroy
bonding.
9. Apply a thin coating of impact adhesive (Bostick
1775 or equivalent) to mating faces of rocker
cover seal face and new gasket. Use a brush to
ensure an even film. Allow adhesive to become
touch dry.
10. Place one end of gasket into cover recess with
edge firmly against recess wall, holding
remainder of gasket clear. Work around cover,
pressing gasket into place ensuring edge firmly
contacts recess wall.
CAUTION: Allow cover to stand for thirty
minutes before fitting.
11. Fit rocker cover to cylinder head, ensure short
screws are inboard. Tighten to
9 Nm.
12. Connect leads to spark plugs and secure to
guide clips on rocker cover.
13. Secure dipstick tube to rocker cover.
14. Refit plenum chamber.
See FUEL SYSTEM
SFI, Repair, Plenum Chamber
15. Reconnect battery negative lead.
