SERVICING THE INDIVIDUAL PARTS
D
2
– Check the oil pump housing for scores and seizing
marks.
– Blow compressed air through all oil ducts and make
sure they are not clogged.
– Check the diaphragm valve for damage, replace the
diaphragm if necessary.
– Remount the diaphragm valve, apply Loctite 243 to
the M4x6 screws and tighten to 1,5 Nm.
–Press the shaft seal ring onto the crankshaft with a
suitable mandrel until flush.
– Mount the chain guide, apply Loctite 243 to the bolt
and tighten to 6 Nm.
CAUTION: make sure the collar on the bolt is
free of screw locking varnish, otherwise the
chain guide will be blocked and may break.
– Mount the circlip on the idler shaft bearing.
– Apply Loctite 243 to the retaining bolt for the shift
drum bearing (M6x8) and tighten to 10 Nm.
RIGHT HOUSING HALF
– Remove the shaft seal rings from the crankshaft (1) and
the countershaft (2).
– Heat the housing half in an oven to approx. 150° C,
the bearings will fall out of the bearing seats
automatically at a housing temperature of approx.
150° C.
Roller bearing for the crankshaft (3)
Press in a new roller bearing from the inside up to the
stop with a suitable mandrel.
Grooved ball bearing for the main shaft (4)
Press in a new grooved ball bearing from the inside until
it fits flush with the housing.
Roller bearing for the countershaft (5)
Press in a new roller bearing from the inside to the stop.
– Blow compressed air through the oil hole (6) and make
sure it is not clogged.
NOTE: engine oil is injected through this hole
to cool and lubricate the pistons and piston pin
bearings.
–Press the shaft seal rings onto the crankshaft and the
countershaft with a suitable mandrel until flush.
1
2
4
5
3
6
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