Husqvarna FE 250 AU 2014, Руководство по ремонту

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18
18.4.2
ENGINE
Guideline
Screw, oil nozzle for pis­
ton cooling
M4
Position all bearing locks.
Mount and tighten screws
0.
Guideline
Locking screw for bearing M5
2Nm
(1 .5 lbf ft)
6Nm
(4.4 lbf ft)
Loctite
®
243
™
Loctite
®
243
™
Blow out the oil channel with compressed air and check that it is clear.
148
Work on the left section of the engine case
308659-10
Remove all dowels.
Remove shaft seal ring
O
of the crankshaft,
8
shift shaft and
8
countershaft.
Remove oil nozzle
8
for clutch lubrication.
Remove oil nozzle
0
for piston cooling.
Remove screws
0,.
Remove the bearing retainers.
Remove any sealing mass remnants and clean the engine case section
thoroughly.
Warm the engine case section in an oven.
Guideline
11
so
0
c
(302 °F)
Knock the engine case section against a level wooden plate. This will cause the
bearings to drop out of the bearing seats.
• Info
I
Any bearings that remain in the engine case section must be removed
using a suitable tool.
Insert the new cold bearings in the bearing seats of the heated section of the
engine case; if necessary, use a suitable press drift to push them all the way in
and make them flush.
• Info
I
When pressing the bearing in, ensure that the engine case section is level
to prevent damage.
Only press the bearings in via the outer bearing race; otherwise, the bear­
ings will be damaged when they are pressed in.
After the engine case section has cooled, check that the bearings are firmly
seated.
• Info
I
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.
Mount the dowels.
Press in shaft seal ring
O
of the crankshaft with the open side facing out so it is
flush.
Press in shaft seal ring
8
of the shift shaft so it is flush with the open side facing
in.