300Tdi Discovery
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.
