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K.6 REMOVING AND DISMANTLING A FRONT HUB
Apply the hand brake and raise the front of the car until the wheel to be operated on is clear of the
ground.
Remove the wheel.
Remove the wheel brake unit as detailed in Section M.7.
Withdraw the grease retainer by applying a suitable extractor (service tool 18G568) to the thread on
the cap.
Extract the split pin from the stub axle nut and remove the nut, remembering that the stub axle on the
left-hand side of the car has a left-hand thread.
Draw off the hub and brake disc assembly, using service tool 18G304. The brake disc can now be
removed from the hub by removing the four securing screws and spring washers.
Remove the distance washer, which will have remained on the stub axle.
The centre of the outer hub bearing may now be withdrawn together with the shims which are fitted
between the bearing and the distance piece.
Remove the oil seal and draw out the centre of the inner bearing and the bearing distance piece.
Place the hub on a press with the outer end downwards and press out the outer bearing ring. Press
out the inner bearing ring in the same manner with the inner end of the hub downwards.
K.7 REASSEMBLING AND REPLACING A FRONT HUB
If all grease has been cleaned from the hub and the bearings washed for examination, ensure that
they are repacked with grease before the hub is reassembled.
Press the two bearing outer rings into the hub. Insert the bearing distance piece. Fit the inner bearing
centre, the oil seal, and the distance washer, with the metal face of the oil seal and the chamfered side
of the distance washer away from the bearing.
Mount the assembly on the stub axle shaft and fit the adjusting shims and outer bearing centre. Adjust
the bearing end-float if necessary, and, finally, lock up as detailed in Section K.8.
Pack the assembly with grease and replace the grease retaining cap. Replace the wheel brake unit as
detailed in Section M.10.
K.8 ADJUSTING THE FRONT HUB BEARINGS
The end-float in the hub bearings must be checked and adjusted whenever the hub has been
dismantled for attention or when the play in the hub bearings becomes excessive. The end-float is
adjustable by means of shims situated between the outer bearing and the bearing distance piece.
Proceed as follows to obtain the correct setting:
1. Assemble the hub, using no shims, and mount the assembly on the stub axle. Fit the stub axle
nut and washer and tighten the nut until the hub bearings bind. This will pull the outer rings of
the bearings fully against their locating flanges inside the hub.
2. Remove the stub axle nut and washer and pull out the centre of the outer bearing. Insert a
sufficient thickness of shims to produce an excessive amount of end-float and note the total
thickness of the shims used. Fit the bearing centre, stub axle nut, and washer and tighten the
nut.
3. Measure accurately the total amount of end-float in the bearings. Remove the stub axle nut,
washer, and outer bearing centre. Reduce the number of shims to a thickness which will give
an end-float of between .002 and .004 in. (.051 and .102 mm.).
4. Replace the stub axle nut and washer and tighten the nut to a torque Wrench reading of 40 to
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