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48
OPERATION
No.
ID
100-3
: To overhaul
the engine
ID
19
TOOLS
39
40
41
42
43
44
Fit
the
pressure
regulator
bracket.
Tighten
the
fixing
screws
(plain
and
spring
washers
under
heads).
Only
use
the
latest
type
bracket
reinforced
with
two
steel
plates
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
To
fit
the
sump
and
timing
cover
:
a)
In
the
bearing
grooves
place
:
at
the
front
: cork
gasket
(first
smear
the
ends
with
"hermetic").
at
the
rear
: the
cork
gasket
(the
ends
of which
should
be
smeared
with
"hermetic")
and
the
cap
groove
sealing
plate.
Smear
the
gaskets
with
"hermetic",
especially
in the
corners.
Fit
the
sump.
Tighten
the
sump
screws.
No
washers
should
be
fitted
under
the
heads
of
the
screws.
A paper gasket is no longer Jitted between the sump and the crankcase.
Smear
the
joint
face
of
the
crankcase
with
very liquid
"hermetic".
Thelongestscrews
are
for
the
front
and
rear
bearings
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
b)
Fit
the
timing
cover,
inserting
a paper
gasket.
Smear
very
liquid
"hermetic"
or
"Festinol"
on
the
joint
face
of
the
crankcase.
Fit
a brass
washer
under
the
heads
of the
three
screws
projecting
on
the
inside
of
the
timing
cover,
or
smear
the
underside
of
the
heads
with
"hermetic"
(new
screws
have
a collar).
Tighten
the
screws
to
11 ft.lbs
(1.5
m.kg)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fit
the
flywheel,
tighten
the
screws
to
36 ft.
lbs
(5 m.
kg)
(torsion
spanner
2471-T,
see
Pl.
7,
fig.
2).
NO lock-
washers
under
the
screw
heads
'....................................................................
To
couple
the
clutch
to
the
flywheel
:
a)
Make
sure
that
the
clutch
disc
bearing
faces
on
the
flywheel
and
the
clutch
are
clean.
b)
Couple
the
clutch
to
the
flywheel,
using
a mandrel
(mandrel
1712-T,
see
Pl.
40,
fig.
4)
or
a primary
shaft
to
centre
the
disc.
When
tightening,
make
sure
that
the
mandrel
slides
freely,
thus
indicating
that
the
plate
has
been
properly
centred.
2
0.250
Tighten
screws
to
14 t
o ft.lbs
(2
t o
m.
kg)
(spring
washers
under
heads).
Withdraw
mandrel
. . . . . . . . . .
P
Turn
engine
over.
Support
it
on
a stand
(stand
MR-3053-160,
see
Pl.
18,
fig.
2).
Adjust
valve
clearances.
The
clearance
must
be
.008
ins.
(0.20
mm)
for
inlet
valves
and
. 010
ins.
(0.
25mm)
for
- ._~~__
exhaust
valves.
Adjust
the
valves
of
a cylinder
with
the
piston
at
T. D.
C.
- end
of
compression
stroke.
The
valves
of an
opposite
cylinder
are
then
at
point
of
balance,
i. e.
the
inlet
valve
at
the
commencement
of
admission
and
the
exhaust
valve
at
the
end
of
exhaust).
Adjust
valves
of
:
1st
cylinder,
the
valves
of 4th
cylinder
being
at
point
of
balance.
3rd
cylinder,
the
valves
of
2nd
cylinder
being
at
point
of balance.
4th
cylinder,
the
valves
of
1st
cylinder
being
at point
of balance.
2nd
cylinder,
the
valves
of
3rd
cylinder
being
at
point
of balance..
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12-17
mm
box
spanners
.
7 mm
tee
spanner
12 mm
socket
12 mm
box
spanner
Torsion
spanner
2471-T
17 mm
socket
Mandrel
1712-T
12 mm
box
spanner
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