MG MGB User Manual

A5325.
Fig.
B.5
The
vernier adjustment
nut
clamp plate
nut
or
bolt.
The
correct torque
tightening
■gures
are
given
in
the
‘GENERAL
DATA’.
Tighten
the clamp
plate
set
bolts.
6.
If the
static
ignition
timing
■gures
is
between
T.D.C.
and
5°
B.T.D.C.,
or
between
5° B.T.D.C.
and
10°
B.T.D
C., adjust
the
vacuum
control adjusting
screw
to
obtain
the
correct
setting.
Approximately 55
clicks
of the
screw
will
move
the
vacuum
control barrel
one
graduation
on
the scale,
and
each graduation is
equal
to
approximately
50
of
movement
on
the
moving
plate.
7.
Check that
the
rotor
is
opposite
the
correct
electrode
in
the distributor
cap
for No.
1
cylinder.
Should
a
stroboscopic
lamp
be
used for
timing
the
ignition,
care
must
be taken
that
with the
engine
running
the speed
is
low
enough
to
ensure
that
the
centrifugal
advance
weights
are
not
in operation.
If
the
vacuum
advance
take-off
is
direct
from the induction
manifold the
0025".
Fig. B.6
The
correct
method
of fitting
a
high-tension cable
to
the
‘
ignition
coil
terminal
nut
THE
IGNITION
SYSTEM
take-off
must
be
disconnected
before
attempting
the
timing,
otherwise the
timing
will be
retarded.
Section 8.10
HIGH-TENSION
CABLES
The high-tension
cables
must
be examined
carefully
and
any
which have the insulation
cracked, perished,
or
damaged
in
any way
must
be
renewed.
To
fit
the
cables
to
the terminal
of the
ignition
coil
thread
the knurled moulded
terminal
nut
over
the
lead,
bare
the
end
of the
cable
for about
1/:
in.
(6 mm.), thread the
wire
through
the brass
washer removed
from the original cable,
and bend
back the strands
over
the washer.
Finally,
screw
the terminal
into
the coil.
To
make the
connections
to
the
terminals
in
the
distributor
moulded
cap
first
remove
the
cap
and
slacken the
screws on
the inside
of
the moulding till
they
are
clear
of
the cables.
Fig. B.7
The
correct
method
of
connecting
high-tension leads
1.
Carbon
brush. 2.
Cablesecuring
screw.
Remove
the
cables.
Fill the holes
in
the distributor
cap
with
Silicone
grease,
then
cut
the
new
cables
off
to
the required
length, push
them completely
home,
and
tighten the
securing
screws.
The cables
from
the distributor
to
the sparking plugs
must
be connected
up
in
the
correct
■ring order, which
is l,
3. 4.
2.
Secure
them firmly
to
the
connectors.
Radio-frequency-suppressed
high-tension
cables
are
used
on
later
cars.
In
this
cable,
a
graphite-impregnated
core
replaces
the metallic conductor
of the
earlier
type
of
cable.
Connectors
used with the
metal-cored
cable
are
unsuitable
for
use
with the later cable and
new-type
cable
connectors
have
been
introduced; these
are a
push-■t
to
the coil and
distributor
covers.
MGB.
Issue
8. 80619

MG MGB Specifications

General

Brand	MG
Model	MGB
Category	Automobile
Language	English