GAS GAS Enduro Series, Workshop Manual

Page: 41 / 72

Workshop manual
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SeRVICING aND RePaIRING THe eNGINe’S COmPONeNTS
- Place the new ball bearing in the semi-crankcase housing. The stamped side of
the bearing must be orientated towards the outside of the semi-crankcase.
- Press on the bearing until it is fully encased in the left-hand semi-crankcase
housing.
Attention:
When removing and fitting the ball bearing, be careful not to apply excessive
pressure to the bearing housing area. If the pressure is excessive, the semi-
crankcase may become damaged!
Secondary shaft bearing -3-
- Remove the ball bearing from the secondary shaft by pressing from the outside
of the semi-crankcase inwards.
- Place the new ball bearing in the semi-crankcase housing. The stamped side of
the bearing must be orientated towards the inside of the semi-crankcase.
- Press on the bearing until it is fully encased in the right-hand semi-crankcase
housing.
Attention:
Whenremovingandfittingtheneedlerollerbearing,becarefulnottoapply
excessivepressuretothebearinghousingarea.Ifthepressureisexcessive,
thesemi-crankcasemaybecomedamaged!
Desmodromic valve bearing -4-
- Remove the needle roller bearing from the desmodromic valve using a bearing
extractor (maximum diameter 25 mm) from the inside of the semi-crankcase
inwards.
- Fit the new needle roller bearing to the semi-crankcase housing. The stamped
side of the bearing must be orientated towards the inside of the housing
opening.
- Press on the bearing until it is fully encased in the left-hand semi-crankcase
housing.
Attention:
Whenremovingandfittingtheballbearing,becarefulnottoapplyexcessive
pressuretothebearinghousingarea.Ifthepressureisexcessive,thesemi-
crankcasemaybecomedamaged!
- Check the lubrication hole of the crankshaft bearing (arrow). It should be clean
and free of obstructions.
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