MG MGB User Manual

THE
FRONT
SUSPENSION
K
AS774W
Fig. K.2
The front suspensioncross-memberand
the suspensionunits
Refitting
a
hub
If the bearing
outer
races
have been removed re■t the
new
ones
by
pressing
them
into
the hub.
Fill each bearing
with
grease
ensuring
a
small
protrusion
either side
of the
bearing.
Fill the
cavity
between the
bearing and
the oil seal and lightly
smear
the
spacer
with
grease.
Do
not
■ll the
cavity
between the bearings
or
the
grease-retaining
cap
with
grease.
Fit
the
inner
bearing
to
its
race
and the collar and
seal
to
the
hub,
position
the
spacer
and
outer
bearing, and
assemble
the hub
to
the
axle.
Adjust the hub bearings
as
follows
to
obtain the
correct
end-■oat of
between .002 and
.004
in.
(.05
and
.10
mm.).
1.
Assemble the hub
without the shims and
mount
the
assembly
on
the axle. Fit the
retaining
washer and
nut
and tighten the
nut
until the
bearings bind. This
will
pull the
outer
races
fully
against
their locating ■anges
inside the hub.
2.
Remove the
nut
and
washer
and pull
out
the
roller
race
of
the
outer
bearing.
Insert suf■cient shims
to
produce
an
excessive
end-■oat
and
note
the
thickness
of
shims used. Re■t the
bearing, washer,
and
nut
and
tighten the
nut.
3. Using
a
clock
gauge, measure
accurately
the end-■oat
in
the
bearings.
Remove
the
nut,
washer, and
outer
bearing and reduce the
number
of
shims
to
produce
the
required end-■oat.
The shims
are
available
in
thicknesses of .003
in.
(.076
mm.),
.005
in.
(.127 mm.),
and .010
in.
(.254 mm).
4.
Replace the
bearing, washer, and
nut
and tighten the
nut to
a
torque
loading of
between
40 and 70 lb. ft.
(5.3
and 9.6 kg.
m.).
Latitude for
the
torque
wrench
reading
is given
so
that
the
nut
can
be tightened
suf■ciently
to
align
a
slot
in
the
nut
with the hole
in
the
axle. Fit
a
new
split
pin.
5.
Refit
the hub
caps.
Section
K.3
COIL SPRINGS
Each coil
spring is
located between
a
spring
pan
bolted
to
the lower wishbone
arms
and
a
spigot
bolted
to
the under
side of the
cross-member
assembly.
MGB. Issue4.
69615
To
remove
a
spring
■t
a
spring
compressor
(Service
tool
18G
693)
to
the
lower wishbone
arms
and take the
weight
of the
spring.
Remove the
anti-roll bar
link,
if
■tted, and the
bolts
securing
the
spring
pan
to
the wishbone
arms.
Unscrew the
spring
compressor
to
release the
tension
in
the
spring
and then
remove
the
spring
pan
and
spring.
Replacement
is
a
reversal of
the removal
sequence.
Section
K.4
SWIVEL
AXLES
The swivel axles work
on
the swivel
pins,
which
are
supported
at
their
upper
ends by the
trunnion
links, which
are
bolted
to
the
shock
absorber
arms,
and
at
their lower
ends by the fulcrum
pins,
which
connect
with the lower
wishbone
arms.
The
centre
portion
of the
pins
are
protected
by
upper
and
lower spring-loaded dust shields.
The
steering
levers
and
the
disc
brake-dust
plates
are
bolted
to
the
inside of the
swivel axles.
Removing and dismantling
To
remove
the
swivel axles jack
up
and
support
the
car
and,
dealing
with
each axle
in
turn,
proceed
as
follows:
1. Remove the front
road wheel.
2. Detach the
brake calliper and
support
it
clear of the
hub.
3. Remove the hub and brake disc
assembly
as
described
in
Section
K2
4. Remove the
steering
lever bolts and detach
the lever
and
then
the disc
cover
bolts and the
cover.
5.
Remove
the
coil
spring
as
described
in
Section
K.3.
Extract the split
pins
from the
upper
trunnion pin
and
fulcrum
pin
and
remove
the
nuts.
7.
Unscrew
the clamp bolt and
centre-bolt
of
the shock
absorber
arm,
ease
the
arm
outwards, and
remove
the
swivel axle.
'
'
K.3

MG MGB Specifications

General

Brand	MG
Model	MGB
Category	Automobile
Language	English