Sunbeam ALPINE I SERIES: APLINE II SERIES, Workshop Manual

Page: 214 / 413

6th
re-Issue
Pa1e 10
WSM. 12-4
Section G (Rear Axle)
HYPOID BEVEL DRIVE
Rotating the pinion, tighten the nut progresslve1y.
FAILURE TO ROTATE THE PINION MAY RESULT
IN A FALSE PRE-LOAD.
If the pinion becomes locked before the nut is
tightened to the correct torque additional shims are
required at point A.
If the correct nut torque figure Is reached and no
resistance Is felt when turning the pinion by hand,
shims must be removed from point A.
To test for correct pre-load
The pre-load Is assessed by measuring the torque
required to rotate the shaft.
The torque should be 6-12 lb. Ins. (·07-· 14
kg.m.)
for new bearings, or 4-8 lb. Ins. (·0S-·09 kg.m.)
when the original bearings are fitted.
The torque can be checked using a length of cord
approximately 3 ft. (1 meter) long attached to a
spring balance.
Take four or five turns of the cord around the
coupling as shown In Fig. SA. Rotate the coupling by
pulling on the spring balance. Note the reading on
the balance scale as the coupling is rotating. It is
Important that the reading is taken as the coupling
is rotating, not the reading as the coupling starts to
rotate.
The reading on the scale should be 6-12 lbs.
(2·7-5·4 kg.) for new bearings or 4-8 lbs. ( I · 8-3.6 kg.)
when the original bearings are fitted.
The torque loading can also be checked conveniently
using VLC tool RG.300 and adaptor RG.300-1A.
Too high a torque Indicates that more shims must be
added to point A. Too low a torque Indicates that
shims must be removed.
NOTE. 0·001 in. (0·025 mm.) In shim thickness makes
a difference of approxlmately 4lb.lns. (0·05 kg.m.).
Fl1. SA. Checking corque loading (pre-load) of pinion bearings
The torque loading can be checked conveniently
using VLC tool RG.300 and adaptor RG.300-IA.
Remove the nut, coupling driver and washer.
Flt the oil seal. The outer case of the oil seal
should be coated with a quick-dry jointing
compound.
Flt the coupling driver, washer and a new self­
locking nut. Tighten the · nut to a torque as
given In General Data.
If It is found that new bearings are required, the old
bearing outer tracks may be removed by means of
the VLC extractor RG.1105.
When reflttin1 new bearinp the followin1
must be observed:-
lnner and outer races of bevel pinion bearings must
not be renewed separately as these are mated In
manufacture.
Failure of a bearing necessitates renewal of the
complete bearing assembly, comprising inner race,
rollers, cage, and outer race.