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46
35
OPEF+ATION
No.
ID
100-3
:
To overhad
the engine
To
fit
the
crankshaft
and
the
pistons
in
the
cylinder
block
(see
Pl.
13 and
14)
:
From
0.10
mm
shim
steel
cut
out
a piece
200
mm
long
and
10 mm
wide.
e)
f )
Fit
the
top
half
bearing
(9)
on
the
cylinder
block
and
the
lower
half
bearing
(10)
on
the
bearing
cap.
In$ert
the
fixing
screws
(40)
without
tightening
them
(no
washers
under
the
heads).
Fit
the
main
bearings
making
sure
that
the
bores
of
the
cylindgr
block
are
clean;
oil
with
oil-can.
Oil
the
pistons.
The
gaps
in
the
1st
and
3rd
rings
must
be
180
diametrically
opposite
the
gaps
of the
2nd
and
4th
rings.
Fit
the
ring
clip
on
the
pistons
(ring
clip
1656-T,
see
Pl.
13,
fig.
lj.
Mount
the
bearing
thrust
ring
(6)
( see
PI.
1) on
the
crankshaft
with
the
chamfer
towards
the
ground
face
of
the
crankshaft
and
the
washer
retaining
slot
towards
the
bearing
cap.
Fit
the
crankshaft,
guiding
the
pistons
to
avoid
pinching
and
breaking
the
rings.
Also
ease
the
bearing
thrust
ring
into
position.
Remove
the
piston
ring
clip.
Insert
the
shim
steel
strip
(prepared
according
to paragraph
"a")
around
the
oil
thrower
on
the
crankshaft
as
shown
in
PI.
14,
fig.
1.
Mount
the
crankshaft
in
its
bearings.
Fit
the
bearing
cap.
Tighten
the
two
assembly
screws
(8)
of the
half-shells.
Tighten
ttie
bearing
caps
screws
to
72
ft.lbs
(10
m.kg)
(torsion
spanner
2471-T,
see
Pl.
7,
fig.
2)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fit
these
assemblies
as
they
are
made
ready.
The
lubricating
holes
must
be
directed
downwards.
Put
the
caps
(52)onthe
studs.
Tighten
the
nuts
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
d
Insert
short
cylinder
head
fixing
screws.
Screw
up
without
tightening.
h)
Tighten
the
screws
in
the
order
indicated
(see
Pl.
7),
tightening
on
first
occasion
to
21.75
ft.
lbs
(3 m.
kg)
and
to
43.5
ft.
lbs
(6
m.
kg)
on
the
second
occasion.
The tightening
torques are very important,
do
not
exceed
the
torque
of
43.5
ft.
lbs
(6 m.
kg)
(torsion
spanner
2471-T,
see
Pl.
7,
fig.
2).
Keeptothe
order
given
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NOTE
- After
the
car
has
covered
a distance
of
500
km
and
then
at
2000
km,
tighten
the
cylinder
head.
Slacken
the
screws,
then
proceed
as
indicated
in
paragraph
(h).
Th e radiator
must
be
drained
in
order
to
carry
out
this
operation.
i)
Turn
over
engine
(stand
MR-3053-170,
see
Pl.
18,
fig.
1).
Check
the
barrel
bores
for
deformations
(dial
gauge
2440-T
for
checking
bores):
deformation
or
ovality
must
not
exceed
0.03
mm,
except
in
the
part
20 mm
from
the
bottom
where
0.05
mm
is
admissible
. . . . . . . . . . . . . . .
NOTE
- Do
not
turn
the
crankshaft
when
centring
the
half-shells.
g)
Tighten
the
half-shell
fixing
screws
(40)
alternately,
up
to
9.5
ft.
lbs
(1.
3 m.
kg).
h)
Remove
the
half-shell
assembly
screws
(8).
Remove
the
bearing
cap.
Lift
the
crankshaft
in
order
to
remove
the
shim
steel
strip.
i)
Smear
the
mating
faces
of
the
half-shells
with
"hermetic".
Place
bearing
caps
complete
with
bearings
in
position.
Fit
sump
gaskets
making
sure
that
the
ends
of the
gaskets
are
well
under
the
front
and
rear
bearing
caps.
Smear
these
areas
with
"hermetic".
Tighten
the
bearing
screws
to
72
ft.lbs
(10
m.kg)
(torsion
spanner
2471-T,
see
Pl.
7,
fig.
2).
.
ID
19
TOOLS
12 mm
box
spanner
Torsion
spanner
2471-T
14 mm
socket
,A.:
Dial
gauge
2440-T
Stand
MR-3053-170
8 mm
box
spanner
Torsion
spanner
2471
-T
17 mm
socket
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