Range Rover Classic. Manual — part 107
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.
57
STEERING
4
OVERHAUL
Sector shaft cover assembly
31. Inspect cover and bearing. If worn or damaged,
replacement parts are not available, fit a new
steering box.
Sector shaft adjuster locknut
32. The locknut is also a fluid seal. Fit new nut at
overhaul.
Valve and worm assembly
33. Examine bearing areas for wear. The areas must
be smooth and not indented.
34. Examine worm track which must be smooth and
not indented.
35. Check for wear on torsion bar assembly pin. No
free movement should exist between input shaft
and torsion bar or between torsion bar and
worm.
NOTE: Any sign of wear makes it essential
to fit new valve and worm assembly.
36. Examine valve rings for cuts, scratches and
grooves. The valve rings should be free to rotate
in grooves.
37. If required, replace all three rings, using ring
expander LRT-57-019. The expander will not
pass over rings already fitted. Remove rings to
allow access without damaging seal grooves.
38. Warm rings and expander tool to aid assembly.
Fit rings to expander, slide expander over valve
and worm assembly. In turn fit rings to their
grooves. Remove expander, slide valve and
worm assembly into ring compressor
LRT-57-020 and allow to cool.
Ball bearing and cage assemblies
39. Examine ball races and cups for wear and
general condition.
40. If ball cage has worn against bearing cup, fit
replacements.
41. Bearing balls must be retained by cage.
42. Bearing and cage repair is carried out by
complete replacement of assembly.
STEERING
5
OVERHAUL
Rack thrust pad and adjuster
43. Examine thrust pad for scores.
44. Examine adjuster for wear in pad seat.
45. Fit new sealing ring to rack adjuster.
Rack and piston
46. Examine for excessive wear on rack teeth.
47. Ensure thrust pad bearing surface is free from
scores and wear.
48. Ensure piston outer diameters are free from
burrs and damage.
49. Examine seal and ring groove for scores and
damage.
50. Fit new ring to piston. Warm nylon seal and fit to
piston.
51. Slide piston assembly into cylinder with rack
tube outwards.
Reassemble
NOTE: When fitting replacement oil seals
lubricate with recommended fluid and
ensure absolute cleanliness.
Sector shaft oil seal
52. Fit oil seal, lip side first.
53. Fit extrusion washer.
54. Fit dust seal, lipped side last.
55. Fit circlip.
Fitting valve and worm assembly
56. Refit original shims and inner bearing cup. Use
Petroleum Jelly to aid assembly.
NOTE: If original shims are not used, fit
shims of 0.76 mm thickness.
57. Fit inner cage and bearings assembly.
58. Fit valve and worm assembly.
59. Fit outer cage and bearings assembly.
60. Fit outer bearing cup.
57
STEERING
6
OVERHAUL
61. Fit new worm adjuster sealing ring.
62. Loosely screw adjuster into casing.
63. Fit locknut, do not tighten.
64. Turn in worm adjuster until end float is almost
eliminated. Ensure bearing cages are seated
correctly.
65. Measure maximum rolling torque of valve and
worm assembly, using a torque wrench and
spline socket LRT-57-025.
66. Turn in worm adjuster while rotating shaft to
increase figure measured in instruction 65. to
0.56 Nm.
67. Back off worm adjuster 1/4 turn. Turn in worm
adjuster to increase reading at 65. by 0.21 - 0.34
Nm with locknut tight,
100 Nm. Use worm
adjusting wrench LRT-57-006 and locknut
wrench LRT-57-028.
Fitting rack and piston
68. Screw slave bolt into piston to aid assembly.
69. Fit piston and rack so piston is 70 mm from outer
end of bore.
Fitting sector shaft
70. Fit sector shaft using seal saver LRT-57-021.
Align roller with cut out in casing - see
RR3934M. Push in sector shaft while rotating
input shaft to allow sector roller to engage worm.
Fitting rack adjuster
71. Fit rack adjuster and thrust pad to engage rack.
Back off half turn on adjuster.
72. Loosely fit new nylon pad and adjuster set screw
assembly.
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст