MG MGB User Manual

THE
ENGINE
engine is
set
so
that
the
groove
in
the
crankshaft pulley
is in
line
with
the largest pointer
on
the
timing
chain
cover, or
the
dimples
in
the
crankshaft
and
camshaft
gears
are
in
line,
the piston
is
exactly
at
TD
0
Withdraw
the
spindle
to
clear
the
camshaft
gear
and
holding
the drive
gear
with
the slot just
below
the
horizontal
and
the large
offset
uppermost,
re-enter
the
gear.
As
the
gear
engages
with
the
camshaft
the slot
will
turn
in
an
anti-clockwise
direction
until
it is
approximately
in
the
two
o’clock
position.
Remove
the
bolt
from
the
gear,
insert
the
distributor
housing,
and
secure
it
with
the
special bolt
and
washer.
Ensure
that
the
correct
bolt
is
used and
that
the
head does
not
protrude above
the
face
of the housing.
Re■t the
distributor,
referring
to
Section
B
if the clamp
plate
has been
released.
Section
A.27
PISTONS
AND
CONNECTING
RODS
(1
8GB)
For removing
and
re■tting
pistons,
piston
rings
and
connecting
rods
see
Section
A.14.
Dismantling
The
gudgeon
pins
are
fully
■oating;
remove
the
two
circlips
locating
each
pin
and
press
the
pins
out.
It
is
essential that
the
piston
assemblies
should be
replaced
in
their
own
bores
and
■tted
the
same
way
round:
they
should be
marked
to
facilitate
this.
Reassembling
Assemble
the
pistons
to
the connecting
rods
with
the
gudgeon
pin,
which
Should
be
a
hand
push
■t
at
a
room
temperature
of
20°
C.
(68°
F.).
Secure
each
pin in its
piston
with
two
circlips,
ensuring
that
they
■t well
into
their
grooves.
Section
A.28
OIL
COOLER
Removing
1.
Disconnect
the
oil
cooler
pipes
from
the oil
■lter,
cylinder
block
and
oil
cooler connections.
2.
Remove
the
four
oil
cooler securing
bolts and
remove
the
cooler.
3.
Withdraw
the
pipes
from
the radiator
diaphragm
grommets.
Refitting
4.
Reverse
the
removing
procedure.
MGB.
issue
7.
87518
/
§
4
5
0:352
Fig.
A.31
A piston
and
connecting
rod assembly
with
a
press
■t
gudgeon
pin
Expander
rail
must
butt.
Top
compressionring.
Second
compression
ring.
4.
Connecting
rod
and
cap
identification.
5.
Multi-sided
nut.
PU"?
Section A
29
PISTONS
AND
CONNECTING
RODS
(Press
■t
gudgeon
pin)
Pistons
and
connecting
rod
assemblies
having
a
press
■t
gudgeon pin
are
fully
interchangeable
in
complete
sets
with
earlier
assemblies
having
a
fully ■oating
gudgeon pin.
Removing
1.
Remove
the
power
unit
(Section
A21).
2.
Remove
the
engine
sump.
3.
Remove
the
cylinder
head
assembly
(Section
A.6).
A.29

MG MGB Specifications

General

Brand	MG
Model	MGB
Category	Automobile
Language	English