Jonsered 2054 - Checking of Crankshaft

112
8
502 50 30-08
3 mm
Check that the guide sleeves are in posi-
tion and place a new gasket on the sealing
surface.
Crankshaft and crankcase
Press the crankcase halves together and
tighten the crankcase screws.
Fit new shaft seals.
Checking of crankshaft
Check the connecting rod big end.
Check that the guide sleeves in the fly-
wheel side’s crankcase half are in posi-
tion and place a new gasket on the sealing
surface. Fix it with a little grease.
Place the drive side’s crankcase half in
position and press the crankcase halves
together by means of tool 502 50 30-08.
Tighten the crankcase screws.
Place the 45 mm long screws at the
cylinder base and the 35 mm long screws
over the tank coverrespectively in front of
the front vibration damper attachment.
Lubricate the shaft journals with grease
and fit new sealing rings turned with the
plate mantle outwards.
On the flywheel side it should be pressed
in until it is 3 mm below the milled surface.
This measurement is obtained automa-
tically if the sleeve in tool 502 50 30-08 is
used during fitting.
Checking of crankshaft
The crankshaft cannot be reconditioned
and should be replaced with a new one if
it is worn or damaged.
Check the connecting rod big end. If
there are signs of seizure marks or dis-
colouring on the side planes, or a damag-
ed needle cage, the crankshaft should be
replaced.