Range Rover. Manual — part 56
LAND ROVER V8
43
REPAIR
9. Remove screw securing dipstick tube to rocker
cover.
10. Remove H.T. leads from spark plugs and guide
clips on rocker covers.
11. Remove 4 bolts securing rocker cover to cylinder
head.
12. Remove rocker cover.
13. Remove and discard rocker cover gasket.
Refit
14. Clean mating faces between rocker cover and
cylinder head.
15. Refit rocker cover to cylinder head using a new
gasket.
16. Fit rocker cover bolts and tighten by diagonal
selection to :
Stage 1 -
4 Nm (3 lbf.ft)
Stage 2 -
8 Nm (6 lbf.ft)
Stage 3 - Re-torque to
8 Nm (6 lbf.ft)
17. Refit H.T. leads to spark plugs. Secure leads to
rocker cover clips.
18. Align dipstick tube. Secure to rocker cover with
screw.
19. Reconnect purge hose to ram pipe housing.
20. Refit plenum chamber.
See FUEL SYSTEM,
Repair.
21. Secure heater hose to clip on inlet manifold.
22. Secure fuel pressure regulator return pipe in clip.
23. Reconnect fuel feed pipe to fuel rail.
24. Reconnect breather hose to rocker cover.
25. Reconnect battery negative lead.
12
ENGINE
NEW RANGE ROVER
44
REPAIR
ROCKER COVER GASKET (LH) - from 99MY
Service repair no - 12.29.40
Remove
1. Remove upper inlet manifold gasket
See
MANIFOLD AND EXHAUST SYSTEM, Repair.
2. Release HT leads from clips on rocker cover.
3. Remove screw securing dip stick tube.
4. Remove and discard 4 bolts securing rocker
cover.
5. Remove rocker cover and gasket.
Refit
6. Clean mating faces of rocker cover and cylinder
head.
7. Position new gasket on cylinder head.
8. Locate rocker cover on gasket and install
securing bolts.
9. Ensure gasket outer rim is correctly located
around periphery of rocker cover, then tighten
bolts in diagonally opposite sequence to:
Stage 1 -
3 Nm (2.2 lbf.ft).
Stage 2 -
7 Nm (5.2 lbf.ft).
10. Fit and tighten screw securing dip stick tube.
11. Fit plug leads to clips on rocker cover.
12. Fit upper inlet manifold gasket.
See MANIFOLD
AND EXHAUST SYSTEM, Repair.
LAND ROVER V8
45
REPAIR
ROCKER COVER GASKET (RH) - from 99MY
Service repair no - 12.29.41
Remove
1. Drain cooling system.
See COOLING SYSTEM,
Repair.
2. Remove upper inlet manifold gasket.
See
MANIFOLD AND EXHAUST SYSTEM, Repair.
3. Release engine harness clip from coolant rail
and move harness clear of rocker cover.
4. Release clips and disconnect coolant hoses
from heater.
5. Remove 2 bolts securing coolant rails and move
outer rail clear of rocker cover.
6. Remove bolt securing inner coolant rail to inlet
manifold, remove rail and discard ’O’ ring.
7. Release HT leads from clips on rocker cover.
8. Disconnect HT leads from spark plugs and move
clear of rocker cover.
9. Remove and discard 4 bolts securing rocker
cover.
10. Remove rocker cover and gasket.
Refit
11. Clean mating faces of rocker cover and cylinder
head.
12. Position new gasket on cylinder head.
13. Locate rocker cover on gasket and install
securing bolts.
14. Ensure gasket outer rim is correctly located
around periphery of rocker cover, then tighten
bolts in diagonally opposite sequence to:
Stage 1 -
3 Nm (2.2 lbf.ft).
Stage 2 -
7 Nm (5.2 lbf.ft).
15. Connect HT leads to spark plugs and fit leads to
clips on rocker cover.
16. Clean coolant rail ’O’ ring recess.
17. Lubricate and fit new ’O’ ring to coolant rail, fit
rail to inlet manifold and tighten bolt to
22 Nm
(16 lbf.ft).
18. Align outer coolant rail and fit and tighten bolts.
19. Connect coolant hoses to heater and secure
with clips.
20. Reposition engine harness and secure with clip
to coolant rail.
21. Fit upper inlet manifold gasket.
See MANIFOLD
AND EXHAUST SYSTEM, Repair.
22. Refill cooling system.
See COOLING SYSTEM,
Repair.
12
ENGINE
NEW RANGE ROVER
46
REPAIR
ROCKER SHAFT - OVERHAUL
Service repair no - 12.29.49 - LH Shaft
Service repair no - 12.29.50 - RH Shaft
Service repair no - 12.29.55 - Both Shafts
Remove
1. Disconnect battery negative lead.
2. Remove relevant rocker cover.
See this
section.
NOTE: If both shafts are to be removed,
identify each assembly to ensure refitment
on original cylinder bank.
3. Remove 4 bolts securing rocker shaft assembly.
4. Remove rocker shaft assembly. Ensure
pushrods remain seated in tappets.
Do not carry out further dismantling if
component is removed for access only.
5. Remove and discard split pin from one end of
rocker shaft.
6. Remove the following components:
NOTE: Retain components in correct
sequence for re-assembly.
7. Plain washer.
8. Wave washer.
9. Rocker arms.
10. Rocker pillars.
11. Springs.
12. Clean all components.
13. Inspect all components for wear.
14. Inspect rocker shaft and bores in rocker arms. If
excessively worn or scored, fit new components.
15. Replace all weak or broken springs.
16. Lubricate all moving parts with clean engine oil.
17. Re-assemble rocker shafts. Ensure that
components are returned to their original
positions, use new split pins to retain
components.
18. Ensure shaft identification groove is positioned
at one o’clock, with pushrod locations of rocker
arms to the right.
CAUTION: Oil feed restriction will result if
rocker shafts are incorrectly assembled.
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