3'
39/1
40
38
rocker pin securing screws and take these out with
their washer and spring.
Remove
push
rods.
Proceed likewise for the other cylinder.
•
Fit flywheel holding tool
part
N.
12 91 1801
(21
in
lig.41) on
the
crankcase
studs.
•
Undo the oil pump gear retaining nut (see fig,
39).
•
Undo the engine sprocket locking
ring
(after
Ilal*
tening the lockplale flaps)
using
wrench 18927650
(54
in
fig.
39/
1).
•
Undo
timing gear
retaining
nut using wrench
18927650
(54 in fig.
40)
.
•
From
the
crankshaft, timing and oil
pump
shaft,
the complete timing assembly complete with gears
and
chain.
•
Remove
the chain lensioner
by
undoing
its
2 re-
taining screws.
•
After undoing the
4
retaining nuts, cap and
both
studs
remove
:
rocker supports, cylinder head.
ga-
skets,
and cylinder barrels.
•
Using holdfast
tool
N.
12911801
(21 in fig. 41) fit-
ted on
the
crankcase studs,
undo the
flywheel retai-
ning bolts to
the crankshaft.
Remove
the tool
and
the
lIywheeL
•
Using pin-pointed pliers N.
26 90
78
00
(11
in
fig.
42),
extract
the piston pins
and
remove
the
pistons.
•
Remove
oil sump "C
..
from
the
crankcase,
remo-
ve oil
fillering cartridge
..
A
..
,
wi re
gauze Ii
Iter "0,,.
aller straightening
the
tab
washer.
Screw
out oi
l
relief
valve " E,. (fiQ. 5).
•
Undo
the
connecting rod cap nuts
and
take
the
caps (from
the
bottom), the con-rods (from the top).
•
Remove
the tappets
from
their housings in
the
crankcase.
•
Undo retaining screws. remove
flange.
and with-
draw the camshaft.
•
Undo the
screws and
using
tool
part
N.
12 913600
(18 in fig. 43).
remove the drive
side flange from the
crankcase.
•
Draw oul the crankshaft
from the drive
side.
•
Undo the screws and
from
the crankcase
remove
the timing side flange.
•
Remove the
oil pressure solenoid.
•
Loosen the clip screws. and
remove both
rubber
tubes.
•
Remove the
oil
breather
valve from the
tube
and
remove
the
tube with
washer from
the
crankcase.
•
Undo the
hollow
screw. the clip retaining screw,
and withdraw
the
tubing.