MG MGB User Manual

THE
FUEL SYSTEM
D
27.
Remove
the
roller
retaining
fork
carefully, making
sure
that the rollers
retain
their
position;
a
displaced
roller will
cut
the diaphragm.
28.
Tighten the
securing
screws
in
sequence as
they
appear
diametrically
opposite
each other.
CONTACT BLADE
29.
Fit the
contact
blade
and
coil lead
to
the pedestal
with the 5 BA. washer and
screw.
Place the condenser
tag
beneath
the
coil lead
tag.
30.
Adjust the
contact
blade
so
that the
points
on
it
are a
little above
the
contact
points
on
the rocker
when the
points
are
closed, also that when the
contact
points
make
or
break
one
pair
of
points wipes
over
the
centre
line
of
the other
in
a
symmetrical
manner.
The
contact
blade
attachment
screw
slot allows
a
degree of adjustment.
31.
Tighten the
contact
blade attachment
screw
when the
correct
setting is
obtained.
CONTACT GAP SETTINGS
32.
Check that when the
outer
rocker
is pressed
on
to
the
coil housing the
contact
blade
rests
on
the
narrow
rib
which
projects
above
the
main
face of the
pedestal.
If
it
does
not,
slacken the
contact
blade
attachment
screw,
swing
the blade clear
of the
pedestal,
and bend
it
downwards
a
suf■cient
amount
so
that,
when
re-positioned,
it
rests
against
the
rib.
(a)
MODIFIED ROCKER ASSEMBLIES
33.
Check the lift of the
contact
blade
above
the
top
of
I}:::i
j)
in
1.
r
A0831
A9536
Fig. D7
(1)
(2)
The AUF 300
type
pump
The
HP
type
pump
mounted
mounted
on
the S.U.
test
on
the
S.U.
test
stand.
stand
(A) Hole
.156 in. (4
mm.)
dia.
(A) Hole .187
to
.192
in.
(4.74
to
4.9 mm.)
dia.
'
MGB.
Issue4. 69615
A.6372A
Fig.
D.8
A
checking
rig
for
S.U.
fuel
pumps
available
from V.L.
Churchill and
Co.
Ltd. The rig
measures
output
in
gallonsof
paraf■n (kerosene)
per
hour,
against
required
suction
and
delivery heads
1. Pressure
gauge.
2. Flow glass.
the pedestal
(A)
(Fig. D.5)
with
a
feeler
gauge,
bending the
stop
finger
beneath the
pedestal,
if
necessary,
to
obtain
a
lift
of
.035i.005
in.
(.91213
mm.).
34. Check the
gap
between the
rocker
■nger
and coil
housing
(B)
(Fig. D.5)
with
a
feeler
gauge,
bending
the
stop
■nger, if
necessary,
to
obtain
a gap
of
.070;t.005
in.
(1.81.13 mm.).
(b)
EARLIER-TYPE ROCKER
ASSEMBLIES
35.
Check the
gap
between
the
points
indirectly by
carefully
holding
the
contact
blade
against
the rib
on
the pedestal, without
pressing against
the
tip
(Fig.
D.6),
then check if
a
.030
in.
(.8 mm.) feeler
will
pass
between the ■bre rollers and the face of
the coil
housing.
if
necessary,
the
tip
of
the blade
can
be
set to
correct
the
gap.
END
COVER
36.
Ensure that
the end
cover
seal washer
is
in
position
on
the
terminal stud, ■t the bakelite
end
cover
and
shakeproof
washer,
and
secure
with the
brass
nut.
Fit
the
terminal
tag
or
connector
and
the
insulated sleeve.
After
test,
replace the
rubber sealing band
over
the
end
cover gap
and seal
with adhesive
tape.
This
must
be retained when the
pump
is
not
mounted internally
in
a
moisture-free
region.
‘
Testing
on a
test
stand
PREPARATION
1.
Churchill
test
rig:
Secure the
pump
in
the clamping
ring,
with the‘
outlet
connection
uppermost.
Connect
to
a
12-volt
battery,
k,
.

MG MGB Specifications

General

Brand	MG
Model	MGB
Category	Automobile
Language	English