Husqvarna DM 650 Workshop Manual page 13

GEAR HOUSING – SPINDLE SHAFT
Bearing replacement
Remove the bearing
Remove the bearing's inner circlip.
Remove the bearing from the shaft using the bearing
puller 531 00 48-67 or with a hydraulic press.
Replace the radial seal
Always replace the radial shaft seal if the spindle shaft is
removed or replaced.
Remove the radial seal with a suitable socket. Fit the
new seal by gradually pressing it in with an object like a
hammer handle. Grease the radial seal's sliding surfaces.
Fit the bearing
It is important that the inner ring has support when
fitting. A piece of wood with a hole that provides the
inner ring with support works well when fitting. A
cooled shaft reduces the pressing force.
It is a good idea to use a hydraulic press when fitting,
or alternatively the bearing can be knocked in place.
Observe caution ensuring that the shaft surface under
the bearing is not scratched where the radial seal is in
contact.
Fit the inner retaining ring
Do not forget to fit the inner circlip when the bearing
has been fitted.
Fit the spindle shaft
The spindle shaft can be fitted without any pressing
force in the gear housing by heating the bearing seat to
about 100 °C and cooling the bearing with cooling
spray. Push the shaft with the bearing in place and
supplement, if necessary, with a few knocks with a
punch around the bearing's outer ring.
Alternatively fit the shaft using a hydraulic press.
Fit the retaining ring
Fit the outer circlip.
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