MG MGB User Manual

THE
REAR AXLE AND REAR
SUSPENSION
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7/47
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Fig.
Ha.2
Use
18G
47
C.
adaptor
18G
47 AK, and adaptor
plug 18G 47
AR
to
remove
the
differential
bearings
Removing
the
pinion
Before
removing
the
pinion
measure
the preload: if this
is
zero,
fit
new
pinion
bearings.
,
Hold the ■ange
with
wrench
18G 34 A
and
remove
the
nut
and
washer.
Withdraw the ■ange by
tapping it
with
a
hide hammer.
Remove
the bevel
pinion.
To
prevent
damaging the
outer
bearing the
pinion
must
be pressed and
not
driven
out.
Dismantling
‘
To
remove
the bevel
pinion
front and
rear
outer
races
from
within the
gear
carrier casing
use
Service
tool 18G 264,
with adaptors
18G
264
AA and 18G 264 AD
for the front
race,
and adaptors
18G
264 AA
and 18G 264
AB
for
the
rear
race.
As
the front
outer
race
is
withdrawn
it
will
carry
the
pinion
oil seal with
it.
Use
Service
tool
180
47
C and adaptor 18G
47 AS
to
remove
the
rear
bearing
inner
race
from the
bevel
pinion.
Reassembling
Re■t the
pinion
front
inner
race
using
Service tool 18G
47
C
with adaptor
18G
47
AS. With the
same
tool assemble
the
rear
bearing
inner
race
to
the
bevel
pinion,
ensuring
that
the
pressure
is
exerted
on
the
inner
race
only.
Refitting
the
differential
and pinion using original
parts
Where
it
is
only
necessary
to
■t
a
new
oil seal the
differential
can
be re■tted
in
the
reverse
order,
assuming
that the original shim
thicknesses
are
retained, but
ensure
that the
pinion
preload
■gure
noted
before
removing
the
pinion is
achieved when tightening the ■ange
nut.
If
any new
parts
are
■tted,
i.e.
crown
wheel and
pinion,
pinion
bearings,
etc.
the
setting
of the
pinion
(its
position
relative
to
the
crown
wheel)
must
be
checked.
Examine
the
crown
wheel
teeth. If
a new crown
wheel
is
needed,
a
mated
pair—crown
wheel
and
pinion—must
be
■tted.
Fitting
a new crown
wheel
and
pinion
involves four
distinct
operations.
1. Setting
the
pinion
position.
2. Setting
the,
pinion
bearing preload.
3. Setting
the
croWn
wheel.
4.
Setting
the backlash.
MGB.
Issue
2. 80619
A5949
Fig. Ha.3
Use 18G
264 and adaptors 180 264
AA, and
18G
264 AD,
or
18G
264 AB
to
remove
front
and
rear
bevel pinion
outer
races
Refitting
1.
SETTING
THE PINION POSITION
Fit
the bearing
outer
races
to
the axle
casing using
tool 186
264 and
18G
264
AA
with
adaptors 18G
264 AD
or
18G
264 AB.
The
variation in
the
pinion
head
thickness
is
etched
on
the
pinion
head
and
is
to
be ignored for this
setting.
Using the
dummy
pinion
18G
191
H, ■t the
inner
race
of
the
bearing
to
the
pinion in
the
gear
carrier
without
the
+
<’
n/Q
4——
rev-
A6662
Fig.
Ha.4
Crown
wheel and
pinion markings
A.
Pinion head thickness.
Max. —.007in.
(—.178
mm.).
B.
Crown
wheel
marked here.
C.
Pinion marked here.
D.
Pinion mounting distance.
Max. 1004 in.
(1102
mm.).
Ha.5

MG MGB Specifications

General

Brand	MG
Model	MGB
Category	Automobile
Language	English