MG MGB User Manual

THE ENGINE
A
ll.
Re■t
the chain
tensioner:
(i)
Re■t
the
inner
cylinder
and
spring
into
the bore
of
the slipper
head
so
that
the
serrated helical
slot
engages
with
the
peg
in
the
bore.
(ii)
Turn
the
inner
cylinder
clockwise
against spring
tension until the lower
serration
in
the
slot
engages
with the
peg
and
retains
the
inner
cylinder.
(iii)
Refit
the slipper
assembly
into the
tensioner
body.
Insert
a
0.06
in.
(1.6
mm.)
spacer
between
the slipper
head
and
body
to
prevent
disengagement.
3NC
956
(iv)
Assemble
the
tensioner and
its
backplate
to
the
Fig. A.42
engine.
Crankshaft keyway
at
T.D.C. and the
timing marks
(V)
Remove the
Spacer:
press
the
Slipper head
into
OPPOSiteto
33°11other
the
body and
release
it
to
disengage
the
inner
cylinder.
.
12. Position the
oil thrower
on
the crankshaft
with the ‘F’
marking
showing.
Refining
13. Re■t
the
front
cover, see
Section
A34.
7.
Crankshaft
gear
packing
washers: Unless
new
crankshaft
or
camshaft
components
have
been
fitted
use
the
same
number
of
packing
washers
as
original
assembly.
(i)
Fit the crankshaft
and
camshaft
gears
hard
against
the shaft
registers.
(ii)
Check the alignment of
the
gear
teeth
using
a
straight-edge.
Measure
the
gap
with
a
feeler
gauge
and subtract 0.005
in.
(0.13
mm).
(iii)
Remove
the drive
keys from the
crankshaft
and
fit
packing washers
to
the thickness
calculated
in
(ii).
Packing washers
are
supplied
in
a
thickness
of
0.006
in.
(0.15 mm.).
Re■t the
drive keys.
8. Rotate the crankshaft
so
that
its
keyways
are
at
T.D.C. and camshaft
with
its
keyway
at two
o’clock
position.
9.
Assemble the
timing
chain
and
gear
wheels
with the
3NC97o
timing
marks
opposite
each
other,
engage
the
Fig.
A43
crankshaft
key and
rotate
the
camshaft
as necessary
to
Timing
chain
tensioner
assembly
engage
the
camshaft
gear
keyway.
1.
Gasket,
5. Inner
cylinder.
10.
Fit
a new
lock washer, tighten
the
nut
and
lock
the
2- BaCkPIate-
.
6-
Spring-
3. Spacer
to
prevent
disengagement.
7.
Peg,
camshaft
nut.
4. Tensioner
body.
8. Slipper
head.
MGB.
Issue 1. 87518
‘
A35

MG MGB Specifications

General

Brand	MG
Model	MGB
Category	Automobile
Language	English