Discovery 2. Manual — part 172

STEERING

ADJUSTMENTS

57-23

9. Release clips and remove air intake hose from

air cleaner housing.

Note: Pre 03 MY air intake hose illustrated.

10. Discard intake 'O' ring and move intake aside

for access.

11. Loosen union securing high pressure pipe to

PAS pump and release pipe.

12. Fit adaptor LRT-57-034A to high pressure port

of PAS pump.

13. Fit adaptor LRT-57-035 to existing high

pressure hose.

14. Fit hose LRT-57-002/3 to each adaptor.
15. Fit pressure gauge LRT-57-005 to test valve

LRT-57-001

16. Connect hoses LRT-57-002/3 to LRT-57-001

and tighten unions.

17. Hang pressure gauge in a safe position under

bonnet.

18. Remove PAS reservoir filler cap, fill to level

indicator and refit cap.

19. Connect battery earth lead.
20. Start engine and allow air to bleed from PAS

system by turning steering from lock to lock.
Stop engine and check PAS fluid level.

21. Ensure steering system and test equipment are

free from leaks.

22. Maintain maximum fluid level during test.
23. Open the test valve on LRT-57-001 and start

the engine.

24. With the engine at idle, slowly turn the steering

wheel and hold on full lock.

25. Note the pressure reading on LRT-57-005.
26. Repeat the pressure check for the opposite full

lock.

27. Test pressure should be between 21 and 62

bar, (300 to 900) psi. Dependant on road
surface.

28. With the engine at idle, centralise the steering

wheel. Pressure should read 7 bar (100 psi) or
below.

29. Pressures outside the above tolerance

indicates a fault.

30. To determine if fault is in steering pump or

steering box, close the valve on LRT-57-001 for
a maximum of 5 seconds. Pump damage may
occur if test valve is closed for longer periods.

31. If gauge does not register between 75 and 103

bar, (1500 psi), (maximum pump pressure), the
pump is faulty.

32. If maximum pump pressure is correct suspect

the steering box.

STEERING

57-24

ADJUSTMENTS

33. On completion stop engine, disconnect battery

earth lead and syphon fluid from PAS reservoir.

34. Remove test equipment from LRT-57-002.
35. Clean PAS pump and pipe union.
36. Fit new 'O' ring to high pressure pipe, align to

PAS pump and tighten union to 25 Nm (18
lbf.ft).

37. Secure PAS pipes in clip.
38. Using new 'O' ring fit intake hose to air cleaner

and secure clips.

39. Remove PAS reservoir filler cap, fill to level

indicator and refit cap.

40. Connect battery earth lead.
41. Start engine and allow air to bleed from PAS

system, by turning steering from lock to lock.

42. Visually check PAS system for leaks.
43. Clean chassis member.
44. Check power steering fluid, if aerated, wait until

fluid is free from bubbles then top-up reservoir
to 'UPPER' level mark.

45. Lower vehicle.
46. Dismantle test equipment.

Power steering pressure check - V8 RHD
models

$% 57.90.10.01

Check

1. Fit gauge and hose LRT-57-005 to valve

assembly LRT-57-001, tighten union.

2. Fit 2 hoses LRT-57-002 to valve assembly

LRT-57-001 and tighten unions.

3. Fit adaptor hoses LRT-57-041 to LRT-57-002

and tighten unions.

4. Disconnect battery earth lead.

5. Remove 5 screws securing front splash shield

to chassis. Remove shield.

6. Clean PAS fluid reservoir around filler cap and

fluid level indicators.

STEERING

ADJUSTMENTS

57-25

7. Syphon PAS fluid from reservoir.
8. Position container to collect PAS fluid spillage.
9. Clean steering box pipe pipe housing.

10. Remove bolt securing pipe clip to steering box.

Leaving the feed pipe from PAS reservoir in
place, release clip and PAS cooler pipe from
steering box. Discard lower 'O' ring.

11. Fit LRT-57-041 adaptor to steering box.
12. Fit PAS cooler pipe to LRT-57-041, align

retaining clip and tighten Allen bolt to 25 Nm (18
lbf.ft).

13. Hang pressure gauge in a safe position under

bonnet.

14. Remove PAS reservoir filler cap, fill to level

indicator and refit cap.

15. Connect battery earth lead.
16. Start engine and allow air to bleed from PAS

system by turning steering from lock to lock.
Stop engine and check PAS fluid level.

17. Ensure steering system and test equipment are

free from leaks.

18. Open test valve on LRT-57-001 and start

engine.

19. With the engine at idle, slowly turn the steering

wheel and hold on full lock.

20. Note the pressure reading on LRT-57-005.

21. Repeat the pressure check for the opposite full

lock.

22. Test pressure should be between 21 and 62

bar, (300 to 900) psi. Dependant on road
surface.

23. With the engine at idle, centralise the steering

wheel. Pressure should read 7 bar (100 psi) or
below.

24. Pressure outside the above tolerance indicates

a fault.

25. To determine if fault is in steering pump or

steering box, close the valve on LRT-57-001 for
a maximum of 5 seconds. Pump damage may
occur if test valve is closed for longer periods.

26. If gauge does not register between 75 and 103

bar, (1500 psi), (maximum pump pressure), the
pump is faulty.

27. If maximum pump pressure is correct suspect

the steering box.

28. On completion stop engine, disconnect battery

earth lead and syphon fluid from PAS reservoir.

29. Remove test equipment from LRT-57-002.
30. Remove bolt and clip from steering box.
31. Release PAS cooler pipe from LRT-57-041 and

discard 'O' ring. Leaving PAS reservoir oil feed
pipe in place, release LRT-57-041 from
steering box and discard 'O' ring.

32. Fit new 'O' rings to PAS cooler pipe.
33. Fit PAS cooler pipe to steering box, align

retaining clip, fit bolt and tighten to 25 Nm (18
lbf.ft).

34. Remove PAS reservoir filler cap, fill to level

indicator and refit cap.

35. Clean chassis member.
36. Fit splash shield and secure with screws.
37. Connect battery earth lead.
38. Start engine.
39. Start engine and allow air to bleed from PAS

system, by turning steering from lock to lock.

40. Visually check PAS system for leaks.
41. Check power steering fluid, if aerated, wait until

fluid is free from bubbles then top-up reservoir
to 'UPPER' level mark.

42. Visually check PAS system for leaks.
43. Dismantle test equipment.