MG MGB User Manual

THE REAR AXLE AND
SUSPENSION
H
Position the
pinion
in
the
gear
carrier
without the
shims, bearing
spacer,
and oil
seal.
Fit the
inner ring
of the front
bearing and the
universal
joint driving
■ange
and
tighten
the
nut
gradually until
a
bearing preload of
10
to
12
1b.
in.
(.12
to
.14 kg.
m.)
is
obtained.
Remove
the
keep disc from the
base
of
the
magnet.
Adjust the dial indicator
to
zero on
the
machined
step
‘B’ of
the
setting
block.
Clean the
pinion
head and place the
magnet
and dial
indicator
in position
(Fig. H.9).
Move the
indicator
arm
until
the foot of the
gauge
rests
on
the
centre
of
the differential bearing bore
at
one
side and tighten
the
knurled
locking
screw.
Obtain the
maximum
depth
reading and
note
any
variation
from
the
zero
setting.
Repeat
the check
in
the
opposite
bearing
bore.
Add
the
two
variations
together and divide
by
two to
obtain
a
mean
reading.
Take
into
consideration
any
variation in pinion
head
thickness. This
will be shown
as an
unbracketed ■gure
etched
on
the
pinion
head and will always
be minus
(—).
If
no
unbracketed
figure
is
shown
the
pinion
head
is
of
nominal thickness.
Using
the
mean
clock
gauge
reading obtained
and
the
unbracketed
pinion
head
figure (if any),
the following calculation
can
be made:
a.
If
the clock reading
is
minus add
the
clock
reading
to
the
piston
head
marking, the
resulting
sum
being
minus.
Reduce the
washer
thickness
by
this
amount.
A55
93W
Fig.
H.7
Setting
the
gauge
to
zero
7911;771:116special block for
determination
of the pinion
position?
MGB.
Issue
3.
56582
Fig. H.8
Use
Service tool 18G
47
C
and
adaptors 18G
47 AH
to
remove
the pinion
bearing
inner
race.
(Inset) Part of
the
adaptor
set
used
to
replace the
bearing
race
EXAMPLE:
Clock reading
..
..
—.002
in.
Pinion
marking
..
—.005
in.
Variation from
nominal
..
—.007
in.
Reduce the washer thickness
by this
amount.
b.
If the clock
reading
is
plus and
numerically less
than
the
pinion
marking reduce
the washer
thickness
by
the
difference.
EXAMPLE:
Pinion marking
..
—.005
in.
Clo’ck
reading
..
+.003
in.
Variation from
nominal
..
7.002
in.
Reduce the
washer thickness
by this
amount.
C‘
If the
clock
reading
is
plus and
numerically
greater
than the
pinion
marking
increase the
washer
thickness
by the difference.
EXAMPLE:
Clock
reading
.. ..
...
A.
+.008
in.
Pinion
marking
..
—.003
in.
Variation from
nominal
..
+.005
in.
Increase
the washer thickness
by this
amount.
The only
cases
where
no
alterations
are
required
to
the
washer
thickness
are
when the
clock
reading
is
plus
and
numerically equal
to
the
unbracketed
pinion marking,
or
when
the clock reading
is
zero
and
there
is
no
unbracketed
marking
on
the
pinion
head.
H.7

MG MGB Specifications

General

Brand	MG
Model	MGB
Category	Automobile
Language	English