Range Rover. Manual — part 108
LAND ROVER V8
33
REPAIR
PLENUM CHAMBER - 97MY to 99MY
Service repair no - 19.22.46
Remove
1. Remove battery cover and disconnect battery.
2. Loosen clip securing air intake hose to plenum
chamber.
3. Disconnect air intake hose from plenum
chamber.
4. Remove split pin and clevis pin securing throttle
cable to throttle linkage.
5. Remove split pin and clevis pin securing cruise
control cable to throttle linkage and release
cable adjuster from abutment bracket.
6. Remove ’C’ clip securing cruise control cable
abutment to bracket and position cable aside.
7. Release clip securing throttle cable abutment to
bracket and position cable aside.
8. Release clip securing harness to cable abutment
bracket and position aside.
9. Disconnect breather hose from plenum chamber.
10. Release clip and disconnect purge hose from
plenum chamber.
11. Disconnect multiplug from throttle potentiometer.
12. Disconnect multiplug from stepper motor.
13. Remove 6 bolts securing plenum chamber to
ram housing.
14. Release plenum chamber from ram housing.
15. Fit hose clamp to 2 plenum chamber coolant
hoses.
16. Position cloth to catch spillage.
19
FUEL SYSTEM
NEW RANGE ROVER
34
REPAIR
17. Release clip securing coolant hose to plenum
water jacket and disconnect hose.
18. Loosen clip securing coolant hose to plenum
water jacket and disconnect hose.
19. Remove plenum chamber assembly.
20. Place clean cloth over intake pipes to prevent
dirt ingress.
Do not carry out further dismantling if
component is removed for access only.
21. Remove 4 bolts securing water jacket to plenum
chamber.
22. Remove water jacket and sealing gasket.
23. Position throttle linkage to gain access to bolt.
24. Remove 3 bolts securing throttle linkage to
plenum chamber.
25. Remove throttle linkage and bracket.
26. Collect spring.
27. Remove 2 bolts securing throttle potentiometer
to plenum chamber.
28. Collect clamp plate.
29. Remove throttle potentiometer.
30. Remove 2 bolts securing stepper motor to
plenum chamber.
31. Remove stepper motor and collect gasket.
32. Position throttle linkage bracket and spring to
plenum chamber.
33. Engage spring to linkage.
34. Fit bolts securing throttle linkage to plenum and
tighten to
8 Nm (6 lbf.ft)
35. Clean mating faces of throttle potentiometer and
stepper motor.
36. Fit throttle potentiometer, ensuring spindle is
correctly engaged.
37. Fit retaining plate and bolts and tighten to
2 N.
(1.5 lbf.ft)
38. Fit NEW stepper motor gasket to plenum
chamber.
39. Fit stepper motor.
40. Fit bolts securing stepper motor to plenum
chamber and tighten to
2 Nm (1.5 lbf.ft)
41. Clean mating faces of water jacket and plenum
chamber.
42. Fit NEW water jacket gasket to plenum chamber.
43. Fit water jacket to plenum chamber.
44. Fit bolts securing water jacket to plenum
chamber and tighten to
13 Nm (10 lbf.ft)
LAND ROVER V8
35
REPAIR
Refit
45. Clean mating faces of plenum chamber and ram
housing.
46. Connect coolant hose to water jacket and secure
with clip.
47. Connect second coolant hose to water jacket
and secure with clip.
48. Remove hose clamps.
49. Apply a thin, uniform coating of Loctite 577
sealant to mating face of plenum chamber.
50. Fit plenum chamber to ram housing.
51. Fit bolts securing plenum chamber to ram
housing and tighten to
24 Nm (18 lbf.ft)
52. Connect multiplugs to stepper motor and throttle
potentiometer.
53. Connect purge hose to plenum chamber. Ensure
connector is securely mated.
54. Connect breather hose to plenum chamber.
55. Position harness to throttle linkage bracket and
secure clip.
56. Engage throttle cable abutment clip to bracket.
57. Align throttle cable to throttle linkage, fit clevis
pin and split pin.
58. Position cruise control cable abutment to bracket
and secure with ’C’ clip.
59. Align cruise control cable to throttle linkage, fit
clevis pin and split pin.
60. Adjust throttle cable.
See Adjustment.
61. Connect air intake hose to plenum chamber and
secure with clip.
62. Connect battery and fit cover.
63. Top up cooling system.
64. Check base idle speed. Adjust if necessary.
If 4.6
See ENGINE TUNING DATA, Information.
If 4.0
See ENGINE TUNING DATA, Information.
PLENUM CHAMBER - from 99MY
Service repair no - 19.22.46
Remove
1. Remove upper inlet manifold gasket.
See
MANIFOLD AND EXHAUST SYSTEM, Repair.
2. Remove 4 bolts securing throttle body to plenum
chamber, remove throttle body and collect
gasket.
3. Remove breather hose adaptor.
4. Remove 4 bolts securing plenum chamber to
upper manifold and remove plenum chamber.
5. Collect plenum chamber gaskets.
Refit
6. Clean plenum chamber and upper manifold
mating faces.
7. Using new gaskets, position plenum chamber, fit
bolts and tighten to
22 Nm (16 lbf.ft).
8. Fit and tighten breather adaptor to
6 Nm (4.5
lbf.ft).
9. Clean plenum chamber and throttle body mating
faces.
10. Using a new gasket, position throttle body, fit
bolts and tighten to
9 Nm (6 lbf.ft).
11. Fit upper inlet manifold gasket.
See MANIFOLD
AND EXHAUST SYSTEM, Repair.
19
FUEL SYSTEM
NEW RANGE ROVER
36
REPAIR
FUEL FILTER
Service repair no - 19.25.02
Remove
1. Disconnect battery negative lead.
2. Depressurise fuel system.
See this section.
3. Raise the vehicle.
WARNING: Support on safety stands.
4. Position container beneath fuel filter to catch
spillage.
5. Disconnect fuel hoses from filter.
6. Remove ’O’ rings and discard.
7. Remove bolt securing filter and strap assembly.
Remove assembly.
Refit
8. Transfer strap to new fuel filter.
9. Position filter and strap assembly to floor pan.
Ensure that flow arrow points toward front of
vehicle.
10. Secure filter strap with bolt.
11. Using new ’O’ rings, connect fuel hoses to filter.
Tighten to
20 Nm (15 lbf.ft)
12. Remove container beneath filter.
13. Remove safety stands. Lower vehicle.
14. Reconnect battery negative lead.
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