REAR
AXLE
Fitting pinion bearings outer rings utilis-
ing
Churchill
Tool No. M70.
Fit the dummy pinion (M.84), the
pinion bearing inner cones and install
into the axle centre casing
;
tightening
the flange nut progressively until the
correct pinion pre-load of 15-18in.
Ibs. is obtained.
Install the pinion setting gauge in
the axle centre casing (Fig.
19),
(after
zeroing the dial with a ground button
held
firmly
on the gauge plunger, Fig.20)
and tighten bearing caps. This gauge is
used to assess the shim thickness which
Fig.
20
Utilising the
"
button
",
the Pinion Setting
Gauge
(Churchill
Tool
No. MSq) is set to
zero.
is required under the pinion head bear-
ing
outer ring, to bring the pinion into
its correct datum position mentioned
earlier. Due to the fact that the
bearing inner cones are a slide
fit
on the
dummy pinion and a press
fit
on the
actual pinion to be used, bearing expan-
sion
will
undoubtedly take place
in
the
latter case.
A
pack of shims .002"-
.003" below the gauge reading
will
be
required to allow for this expansion and
thus ensure the pinion is in its correct
datum position.
Fig.
xg
Pinion
setting gauge,
Churchill
Tool No.
M&
assembled
to
axle
centre
casing.
Fig.
21
11
Measuring
the
shim
pack.
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