300Tdi Discovery
STEERING
3
OVERHAUL
CAUTION: Do not remove sector shaft
bearings from casing. Replacement parts
are not available. If sector shaft bearings
are worn fit a new steering box.
21. Remove dirt excluder, circlip and seal from input
shaft housing bore.
CAUTION: The use of a seal puller is
recommended to prevent damage to
casing, and possible oil leaks.
INSPECTING
Piston
22. Discard all rubber seals and provide
replacements.
NOTE: A rubber seal is fitted behind
plastic ring on rack piston. Discard seal
and plastic ring.
Steering box casing
23. Examine piston bore for scoring and wear.
24. Examine feed tube.
25. Fit a new feed tube if damaged. Tighten to
22
Nm.
Sector shaft assembly
26. Check there is no side play on roller.
27. If side play on roller exists fit a new sector shaft.
28. Check condition of adjuster screw threads.
Check adjuster end float. Fit new adjuster if end
float exceeds 0.15 mm.
29. Examine bearing areas on shaft for excessive
wear.
30. Examine gear teeth for uneven or excessive
wear.