300Tdi Discovery
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.
