Refitting the hub cover bearings
- To fit the hub housing bearings, the engine crank-
case and the cover must be heated with the spe-
cial heat gun.
- The three 15 mm bearings must be fitted using
the appropriate tools.
The 42 mm side of the adapter must be turned to-
wards the bearing.
- Refit the driven pulley shaft bearing with a mod-
ular punch as shown in the figure.
- Refit the Seeger ring with the opening facing the
bearing and the new oil guard flush with the crank-
case on the pulley side.
N.B.
TO FIT THE BEARING ON THE COVER, SUPPORT THE
COVER WITH THE STUD BOLT SET.
N.B.
IF THE BEARING HAS AN ASYMMETRICAL BALL RETAIN-
ER, PLACE IT SO THAT THE BALLS ARE VISIBLE FROM
THE HUB INNER SIDE.
N.B.
WHEN FITTING THE BEARINGS ON THE ENGINE CRANK-
CASE, SUPPORT THE CRANKCASE PREFERABLY ON A
SURFACE TO ALLOW THE BEARINGS TO BE DRIVEN
VERTICALLY.
Specific tooling
020150Y Air heater support
020151Y Air heater
020412Y 15 mm guide
020376Y Adaptor handle
020359Y 42x47-mm adaptor
MSS X9 Evolution 250 Engine
ENG - 99
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