Husqvarna F2303P0, Руководство по ремонту

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310058-10
17 ENGINE
Main work
Remove all remaining dowels.
Remove oil nozzle
O.
Remove screws @ and take off the bearing retainers.
Remove the bearing retainer of main shaft bearing (D, of
countershaft bearing
C,
and of shift drum bearing
0-
Remove any remnants of sealing compound and clean the
engine case section thoroughly.
Warm the engine case section in an oven.
Guideline
1150 °c (302 °F)
Knock the engine case section against a level wooden board.
This will cause the bearings to drop out of the bearing seats.
Info
Any bearings that remain in the engine case section
must be removed using a suitable tool.
Remove washer
CD.
Warm the engine case section again.
Guideline
1150 oc (302 OF)
Position washer
CD.
Insert the new cold bearings into the bearing seats of the hot
engine case section and, if necessary, use a suitable press
drift to push the bearings from the inside to the outside, all
the way to the stop or so it is flush.
Info
When pressing the bearings in, ensure that the engine
case section is level to prevent damage.
Only press the bearings in via the outer bearing race;
otherwise, the bearings will be damaged when they
are pressed in.
After the engine case section has cooled, check that the
bearings are firmly seated.
Info
If the bearings are not firmly seated after cooling, it
is likely that they will rotate in the engine case when
warm. In this case, the engine case must be renewed.
Position all bearing retainers. Mount and tighten the screws.
Guideline
Screw, bearing
retainer
M5
Mount and tighten oil nozzle
O.
Guideline
Oil nozzle, pis­
ton cooling
M5
6 Nm (4.4 lbf ft)
Loctite
®
243
™
2 Nm (1.5 lbf ft)
Loctite
®
243
™
187