-~~---~-------THE
REAIl
AXItE
H
Seetlon
B.ll
TO
REPLACE
A PINION
(0)
The
old pinion in a new axle casing.
(b)
New
pinion and new matched
set
of bearings
and distance-piece In an old casing.
(c)
New
pinion and old bearings and dlstance-
piece In an old casing.
(d) Old pinion and new matched
set
of bearings
and distance-piece In an old casing.
FIr.
H.I~.
The dummy pinion shaft In position
in
the
housing. The ground head
of
the
dummy shaft (orms
the
datum
for establishing
the
correct
thickness
for
the
spacing washer.
In all cases
the
pinion must be
set
accurately in the
axle casing. remembering
that
the
roller races and
their
distance-pieces are supplied in sets giving
the
correct
amount of pre-load on assembly. They can.
therefore.
only be replaced as
"sets"
and
not
indi-
vidually.
The
pinions may be marked on
their
heads with one
of
the
following figures
;-
A ringed figure
+2.
+I.
Zero
(or no marking),
-I,
-2.
and possibly an unringed figure
--2
or
-
r.
The
pinion washer controls
the
position of
the
pinion in relation to
the
axis of
the
crown wheel. and
M.G. Midget (Serlei .. TO
"),
Issue 2 (E) 8,'52
it is fitted between
the
head of
the
pinIon and its
rear
bearing.
Adjustment
of
the
pinion positIon Is made by vary-
ing
the
thlckness of
the
pinion washer. These
are
available in a range of thickness varying by
·001
In.
(.025 mm.) and are marked on spares replacements
only.
The pinion is fitted
to
the
axle In
the
follOWing
way:-
Fit
the
pinion bearing
outer
races in
the
pinion
housing.
then
assemble
the
rear pinion bearing. inner
race
to
the
specIal dummy pinion spindle (Special Tool
Fig. H.I3.
Inserting
the
special dummy pinion
shaft into
the
axle casing pinlon
housing.
No. 68829), and place In position in
the
housing. insert-
109 it through
the
cover
opening In
the
axle casing.
Fit
the
front bearing
inner
race.*
Fit
the
spindle
nut
and tighten it up
to
give
the
correct
pre-load of
II
to
13
in./lb. (,126
to
·149 m./kg.)
-NOTE.-
The
bearing.pacer;s
omitted. because tho
correct
pre-load can only
be
obwnad
wien the bei!.rinji in
po:sic.LQn
when
'the ,.mivcfJl,l Joint
th,nge is
locked
UI)
tiiht.
Ttlis is
due
1:0 ehe calcl.llilted c.om,pre.uion
of
the
b
uri
ng
space
r und er this. lccking
load.
H.II
Wishvilles Classic
Automobile Library
To Next Page
Loading...
Need help?
General
