MG MGB User Manual

H
THE REAR
AXLE
AND SUSPENSION
GENERAL DESCRIPTION
The
rear
axle
is
of the three-quarter-■oating
type,
incorporating
hypoid
■nal reduction
gears.
The axle shafts,
pinion,
and differential
assemblies
can
be withdrawn
without
removing
the axle from
the vehicle.
Wire wheels
are
available
as
optional
equipment.
The
rear
axle wheel bearing
outer
races are
located
in
the
hubs; the
inner
races are
mounted
on
the
axle tube
and
secured
by
nuts
and lock washers. Wheel
studs
in
the hubs
pass
through the brake-drums
and axle shaft driving ■anges.
The differential
and
pinion
shaft bearings
are
preloaded,
the
amount
of
preload being adjustable
by
shims.
The
position
of the
pinion in
relation
to
the
crown
wheel
is
determined by
a
spacing
washer.
The backlash between
the
gears
is
adjustable by shims.
Suspension
is
by semi-elliptic leaf
springs,
rubber-mounted,
and
the shackles
are
■tted
with rubber bushes of
the
■exing
type.
A5598w
Fig.
H.1
Remove the
brake drum
and drive shaft flange locating
screws
and
then withdraw the axle shaft
LUBRICATION
Oil level
Check
the
level, and
top
up
if
necessary.
The filler
plug
is
located
on
the
rear
of the axle
and also
serves
as an
oil level
indicator. After
topping
up
allow
time
for
any
surplus
oil
to
run
out.
This
is
most
important;
if the
axle
is
over■lle
d, the
oil
may
leak through
to
the
brake linings
and lessen their
ef■ciency.
NOTE-It
is essential that only
Hypoid oil be
used in the
rear
axle.
Draining
The
most
suitable
time
for
draining
is
after
a
long
journey
whilst the
oil
is
still
warm.
Clean the drain plug before
it is
replaced and
tightened.
Re■ll
the
axle with fresh oil.
'H.4
Section H.l
REMOVING
AND REPLACING
A
BRAKE-DRUM
AND
AXLE SHAFT
Jack
up
the
car
and place blocks
under the
spring
as
close
as
possible
to
the
axle.
Remove the wheel.
Release the hand
brake.
Disc
wheels
Unscrew
and
remove
the
two
countersunk Phillips
screws
locating
the
drum and
tap
it
from
the hub.
It
may
be
necessary
to
slacken off the
brake adjustment
slightly if the
shoes hold
the drum.
Unscrew the
countersunk Phillips
locating
screw
in
the axle
shaft
driving ■ange.
Withdraw
the
axle shaft
by
gripping
the
■ange
or
carefully
prising it
with
a
screwdriver.
Note the
gasket
and
bearing
spacer
between the
axle ■ange
and
the
hub.
Wire wheels
Unscrew
the four
nuts
securing
the
drum
to
the hub
and
tap
the drum from
the hub.
It
may
be
necessary
to
slacken
off
the brake
adjustment
to
free the
drum.
Unscrew the
countersunk Phillips
screw
securing
the hub
extension
■ange
to
the hub.
Withdraw
the hub
extension
and axle shaft.
The
extension
■ange has
two
threaded
holes
so
that
the
shaft
can
be pulled
out
if
it is
tight. Note
the
rubber
ring
oil seal
between the hub
extension
■ange
and
the hub.
To replace the shaft
and drum
reverse
the
above
sequence
of
operations.
Section
H.2
REMOVING
AND
REPLACING
A HUB
Remove the drum and axle shaft
as
detailed
in
Section H.1.
A5597W
'Fig.H.2
Use
Service tool 18G
304
with adaptor 18G 304
A
to
withdraw
the hub
MGB. Issue4.
65891

MG MGB Specifications

General

Brand	MG
Model	MGB
Category	Automobile
Language	English