Sunbeam ALPINE I SERIES: APLINE II SERIES, Workshop Manual, Page: 226 / 413

Page 22
It is essential that, of the three apertures
in
the rear face of the oil seal, one should be at
the top, or "12 o'clock" position.
This completes the assembly and adjustment of the
pinion.
DIFFERENTIAL UNIT-To adjust and refit
Having carried out the preceding operations,
remove the differential box bearings (as previously
described) and shims. In their place fit the dummy
bearings without shims, their Inner faces abutting
the differential box (See Fig. 14). Place the differ­
ential box assembly (complete with the dummy
bearings), In position In the housing, replace the
bearing caps and lightly tighten the securing nuts.
Paint the teeth of the crown wheel thinly with a
light paste made of dry red lead and engine oil and
rotate the wheel to obtain an impression of the
pinion tooth bearing. When correctly meshed, the
marking so obtained should be as shown in
example A, Fig. 7, I.e., the area of contact of the
teeth of the crown wheel Is between the crown
and the base of the tooth but Is considerably
nearer the toe (Inner end) than the heel (outer end)
of the tooth. Adjustment is effected by using a
WSM, 124
Section G (Rear Axle)
suitable length of tubing to drive the appropriate
dummy bearing Inwards.
Having obtained the correct adjustment, measure
the gaps between the outer faces of the dummy
bearings and the casing, points A, Fig. 14.
By adding ·8125" (20·64 mm.) (the thickness of the
dummy bearings) to each measurement at point
A, the dimensions C and D are obtained. Now
measure the thickness of the actual bearings to be
used and subtract these from dimensions C and D.
(See under "Differential Unit-measurement of
bearings"). The result gives the thickness of the
shims required for each side, but 0·002" (0·05 mm.)
must be added to each side to provide the required
preload for the bearings. Make a careful note of
these measurements. Remove differential box from
casing and dismantle the dummy bearings. Place
the shims in position. (Fig. 14). Press on the
bearings. Replace the differential box in the housing
and refit the caps.
The bearing recesses are machined to such limits
that the outer member of the bearings will be
gripped securely when the bearing cap nuts are
tightened.
107"'
Fl1
14.
Adjustment of crown wheel and differential box
bearinrs
.­
J