Motobecane 40 - Page 17

DISASSEMBLING THE
ENGINE
CONT'0,
Withdraw the needle cage
from the
con-rod
small end.
Loosen all crankcase
retaining
nuts.
Remove the crankcase from
the vice.
Remove the
crankcase
retaining
bolts and
lower engine
mountinq
studs
(note
uhe
position
of
the
studs
and
of the
bracket
for
the
belt
guard).
To
prevent
the
crankshaft
journal
from
overheating,
insert the
blade,
100015,
on
it.
Repeat the operation
for
the
other
iournal.
Heat with a
propane
torch the crankcase
half
facing
the
clutch side
around the outside of the
crankshaft
bearing
(begin
with this
side
be-
cause
it
js
then
easy to
separate
crankcase
shells)
(fig.4).
The crankcase
half
will
drop away
on
its own
(fig.
4).
Repeat the operation for the
other
crankcase
half
(fig.
4).
While the crankcase
halves are
hot,
remove the
oil
seals
with
a screw-
driver tapping
from
the
outside to
the
inside of
the crankcase
half.
Extract
the crankshaft
bearings
using
the
crankshaft
bearinq
pu11er,
100011
(fig.
5).
Note
the
arrangement of
shims
behind the
crankshaft
support
bearinq
if
the crankshaft
is so
fitted.
N
Fig. 4
Fig.
5
R0 13
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