MG MGB User Manual

THE WHEELS AND TYRES
0
marking
their
tyres
with
a
white
spot
in
the
neighbourhood
of the
bead
at
the
lightest
point
of
the
cover;
similarly,
they
are
marking
the
inner
tubes
with
spots to
indicate
their
heaviest point.
When
tyres
are
assembled
care
must
therefore
be
taken
to
see
that
they
are
assembled
with the
spots
on
the
cover
coinciding
with
the
spots
on
the tube.
It
must
be
noted,
in
addition,
that
special balancing
discs
are
■tted
to
the
inside
of the
cover
casing in
some
cases
that
these
should
on no
account
be
removed
as
the
tyre
balance
will
be
upset
if this
is
done.
These balance
discs
are
not
repair
patches
and do
not
indicate
any
fault
in
the
tyre.
Dust
the
inside
of the
cover
with
french chalk.
In■ate the
tube until
it
begins
to
round
out,
then
insert
it in
the
cover.
Apply
a
frothy solution
of
soap
and
water
generously
around
the
centre
base
of the tube,
extending
upwards
between
the
tyre
beads
and the
tube
itself for
at
least 2
in.
(50
mm.)
on
both sides.
Also
apply the solution
to
the
bottom
and
outside
of the
tyre
beads. Do
not
allow
the
solution
to
run
into
the
crown
of the
tyre.
The
solution
must
be
strong
enough
to
feel slippery
when the
■ngers
are
wetted
with the solution
and
rubbed
together.
Mount
the
tyre
on
the
rim
immediately,
whilst the
soap
solution is
still
wet.
Push
one
edge
of the
cover
over
the edge
of
the
rim.
It
will
go
quite
easily
if the
part
first
put
on
is
■tted
on
the
opposite
side
of the valve
and
is
pushed
right down
into
the
rim
base. Move
it
round
so
that
its
balance
spots
coincide
with those
of the
inner
tube
when
it is
inserted with
the
valve
passing
through the
hole
in
the
rim.
(Take
care
that
the valve,
fitted
in
the
side
of the tube,
is
on
the
correct
side of the
rim).
Before
in■ating, be
sure
that
the
tyre
beads
are
clear
of
the
well
of
the
rim
all the
way
round and
push the valve into
the
tyre
as
far
as
possible
in
order
to
ensure
the
tube
is
not
trapped
between
the
bead and
the
rim,
then
pull
it
out
again into its
correct
position.
In■ate slowly
until
the
beads
are
fully
seated.
Fig.
0.7
Lever
the
cover
edge
over
the rim
all round the
wheel
MGB.
Issue
2.
60230
1833C“!
Fig. 0.8
Balance
marks
on
tyre
and
tube
Remove
the valve
core
to
de■ate the tube
completely
to
permit
any
stretched
portions
of the tube
to
readjust
themselves
in
the
cover
and
relieve
any
local
strains
in
the
tube.
Rein■ate
to
the
correct
working
pressure
(see ‘GENERAL
DATA’). This
procedure
must
be
followed
whenever
a
tube
is
fitted.
Section
0.9
WHEEL AND
TYRE
BALANCE
Unbalance
in
wheel
and
tyre
assemblies
may
be
responsible
for
various
effects such
as
wheel wobble,
abnormal
wear
of
tyres
and
suspension
parts,
vibration in
the
steering
or,
in
extreme
cases,
in
the
whole
car.
If
any
of these
faults
develop,
for which
no
other
cause can
be
found, wheel and
tyre
balance
should be
checked and
corrected
according
to
instructions
supplied by
the
manufacturer
of
the
balancing
machine.
When wheels
are
to
be
re-balanced
it
is
essential
that the
weight of the
car
be
removed from
the
tyres
as
soon as
possible
after
a run
so
that
temporary
■at
spots
do
not
form
on
the
tyres.
Nylon
tyres
are
particularly
prone
to
this
and
re-balancing
with the
tyres
in
this
condition
is
pointless.
Section
0.10
FACTORS
AFFECTING TYRE
LIFE
In■ation
pressures
All other
conditions
being
favourable
there
is
an
average-
loss
of 13
per
cent.
tread
mileage
for
every
10
per
cent.
reduction
in
in■ation
pressure
below
the
recommended
figure.
0.5

MG MGB Specifications

General

Brand	MG
Model	MGB
Category	Automobile
Language	English