Range Rover Classic. Manual — part 87
51
REAR AXLE AND FINAL DRIVE
6
OVERHAUL
48. Repeat on other bearing bore. Add readings
then halve sum to obtain mean reading. Note
whether trace pin has moved up or down from
zero.
A.
Where trace pin moves down, reading is
equal to thickness of shims to remove, to
bring pinion to nominal.
B.
Where trace pin moves up, reading is
equal to thickness of shims to add, to bring
pinion to nominal.
49. Before adjusting shim thickness: check pinion
face marking. If a plus (+) figure, subtract in
thousandths of an inch from shim thickness
figure.
50. If pinion has a minus (-) figure, add amount to
shim thickness figure.
Adjust shim thickness under pinion head bearing
track as necessary.
INCH
MM
.001
=
.025
.002
=
.05
.003
=
.075
.004
=
.10
.005
=
.125
.006
=
.15
.007
=
.175
.008
=
.20
.009
=
.225
.010
=
.25
NOTE: Where dial indicator is metric
conversion must be made to inches when
measuring and selecting shims.
51. Recheck pinion height setting. If setting is
correct, mean reading of dial gauge will agree
with figure marked on pinion end face.
For example, with end face marking of +3, dial
gauge reading should indicate pinion is +0.003
in.
Bearing pre-load adjustment
52. Remove the pinion flange, pinion, outer bearing
and spacer.
53. Slide new shim, of same thickness as original
(bearing pre-load) into position on pinion shaft. If
fitting a new shim use thickest shim 2.155 mm.
54. Fit pinion to pinion housing and fit outer bearing
and spacer (front differential only).
55. Fit driving flange, washer and nut.
56. Do not fit oil seal at this stage.
57. Tighten pinion flange nut to
130 Nm. Force to
rotate pinion shaft is 3Nm using new bearings.
Change shim as necessary to obtain reading.
Thicker shim will reduce pre-load. Thinner shim
will increase pre-load.
NOTE: If using original bedded in
bearings, pre-load figure is 1.5 Nm.
58. Remove pinion flange.
REAR AXLE AND FINAL DRIVE
7
OVERHAUL
PINION PRELOAD SHIMS
PART No.
INCH
MM
FTC3869
.085
2.155
FTC3870
.084
2.130
FTC3871
.083
2.105
FTC3872
.082
2.080
FTC3873
.081
2.055
FTC3874
.080
2.030
FTC3875
.079
2.005
FTC3876
.078
1.980
FTC3877
.077
1.955
FTC3878
.076
1.930
FTC3879
.075
1.905
FTC3880
.074
1.880
FTC3881
.073
1.855
FTC3882
.072
1.830
FTC3883
.071
1.805
FTC3884
.070
1.780
FTC3885
.069
1.755
FTC3886
.068
1.730
FTC3887
.067
1.705
FTC3888
.066
1.680
FTC3889
.065
1.655
FTC3890
.064
1.630
FTC3891
.063
1.605
FTC3892
.062
1.580
FTC3893
.061
1.555
FTC3894
.060
1.530
FTC3895
.059
1.505
FTC3896
.058
1.480
Fitting Pinion Oil Seal
59. Coat outer diameter of seal with grease. Fit seal
lip side leading flush with end face of housing
using tool LRT-51-001.
Fit pinion drive flange - front axle differential
60. Lubricate seal lips with axle oil.
61. Fit spacer and pinion drive flange to differential.
62. Secure flange with washer and nylon nut.
Tighten to
130 Nm.
Fit pinion drive flange - rear axle differential
60. Lubricate seal lips with axle oil.
61. Fit pinion drive flange to differential and secure
with washer and nylon nut. Tighten to
130 Nm.
62. Coat centralizing peg with Loctite 601 or 638 and
fit over pinion retaining nut in drive flange.
51
REAR AXLE AND FINAL DRIVE
8
OVERHAUL
CROWN WHEEL/PINION BACKLASH
ADJUSTMENT
63. Place differential housing in pinion housing.
64. Fit bearing caps and partly tighten bolts.
65. Fit bearing adjusting nuts.
66. Mesh crown wheel to pinion. Using service tool
LRT-54-508 loosen left bearing adjuster nut.
67. Tighten right nut until crown wheel/pinion
backlash is just removed.
68. Tighten left nut until it contacts bearing. Continue
turning until a backlash of 0,10 to 0,17 mm is
met. DO NOT loosen right nut otherwise bearing
preload will be affected.
69. Fit locking fingers and roll pins. Align locking
finger with a slot.
70. Evenly tighten bearing cap bolts to
90 Nm.
71. Recheck crown wheel/pinion backlash.
72. Lubricate bearings and gears.
REAR AXLE AND FINAL DRIVE
9
OVERHAUL
REAR HUB ASSEMBLY
Service repair no - 61.15.13.
Overhaul
1. Remove rear hub assembly.
See Repair, Rear
Hub Assembly
2. Remove outer bearing.
3. Remove five nyloc nuts and withdraw ABS
sensor ring, if applicable.
4. Mark, for reassembly, position of hub to brake
disc.
5. Remove five bolts and separate hub from brake
disc.
WARNING: A maximum of two road wheel
retaining studs can be renewed. Should
more studs be unserviceable fit new hub
with studs.
6. Remove grease seal and inner bearing from
hub.
7. Remove inner and outer bearing tracks.
REAR HUB COMPONENTS
1. Sensor ring retaining nut ABS.
2. Axle shaft.
3. Axle shaft joint washer.
4. Axle shaft retaining bolt (five off).
5. Lock nut.
6. Lock washer.
7. Hub adjusting nut.
8. Spacing washer.
9. Outer bearing.
10. Hub.
11. Inner bearing.
12. Grease seal.
13. Brake disc.
14. Disc retaining bolt (five off).
15. Sensor ring ABS.
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