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Dismantling the rear axle
1.
Remove the rear axle from the vehicle as previously
described.
2.
Place the axle in a vice with the spring mounts uppermost
and the pinion flange facing the operative.
3.
Remove the right-hand brake drum and hub.
4.
Remove the right-hand brake plate assembly, remove the
spacer and the right hand half shaft.
5.
Remove eight nuts and lock washers securing the two
halves of the axle case. Remove the right-hand axle housing and
withdraw the differential unit.
Figure 7 Removal of pinion bearing using collars and hand press
1.
Collars
Figure 8 Removal of axle bearing cones from outer housing
1.
Puller tool
2.
Slide hammer
6.
Using a hand press, General tool No. 47, and collars RT
8764/1, with adapter RT 8764/2, remove the differential bearings as
follows: Feed the differential unit in to the hand press and fit into the
cone of the tool. Ensure that the bearing fits securely into the collars
and the rollers on the bearing and fit the adapter to the differential
unit (Figure 6). Supporting the differential unit from below, turn the
hand press to remove the bearing. Repeat this operation for the other
bearing and take note of the value of the shims behind each bearing if
only the bearings are to be renewed.
Figure 9 Determining overall differential end float using
gauging tool
1.
Gauging nut
2.
Locking nut
7.
Remove the pinion flange nyloc nut and washer and
withdraw the flange. Tap the pinion assembly in to centre of the axle
and remove.
8.
Using hand press tool No. 47 and pinion bearing remover
tool RT 8765, follow the same procedure as the differential unit and
remove the pinion bearing. (Figure 7). Note the value of the spacing
washer thickness next to the pinion head plus any additional shims.
9.
Following the earlier procedure, remove the left-hand
brake assembly and the left-hand half shaft.
10.
Using the three legged puller tool No. RT 3072-1 on slide
hammer tool No. 3072, remove the axle housing outer bearing cones
(Figure 9).
11.
Should the pinion outer bearing tracks need replacement,
remove with a suitable drift after gently heating the appropriate area
of the casting.
12.
The pinion flange oil seal will come away when the rear
bearing is removed.
Re-assembly - determining the overall differential end float.
1.
Thoroughly clean all dismantled components.
2.
Place two dummy bearings RT 8732 on the ends of the
differential carrier without any shims and assemble in the actual
casing. Secure the two halves of the axle case.
3.
Check that the differential unit rotates freely.
4.
Assemble the components of the tool (Figure 9), screwing
the circular plates on to the push rods. Insert these through the axle
tube, ensuring that the swivel pad on each end is felt to locate in each
side of the differential carrier bore. Screw plates up to the axle tube
and secure with the bolt supplied. Unscrew both rods slightly before
Page 60
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