Crankshaft - KTM 450 SX-F Repair Manual

5-7
D
C
B
A

Crankshaft

!
N
EVER CLAMP THE CRANKSHAFT IN A VISE TOGETHER WITH THE CRANKPIN TO TRY
TO EXTRACT THE INNER BEARING RING
CRANKSHAFT WEBS AND MAKE THE CRANKSHAFT UNUSABLE
– Clamp the crankshaft in a vise using protective jaws.
– Heat mounting tool 584.29.037.037 to approx. 150°C on a
hotplate and immediately slide it onto the inner ring. Tightly press
the special tool together to obtain a good heat transfer and pull the
inner ring off the crankshaft.
– To mount the new inner ring, reheat the mounting tool to approx.
150°C, clamp the new inner ring and immediately slide it onto the
crankshaft journal.
– Make sure the new inner ring is seated flush.
– Measure the axial clearance of the crankshaft after the inner rings
are replaced.
!
I
F THE CRANKPIN IS INSERTED IN THE WRONG POSITION
WILL NOT BE LUBRICATED WITH ENGINE OIL AND CAUSE THE BEARING TO BE
.
DAMAGED
– If you are replacing the conrod bearing, make sure the crankpin is
correctly positioned. The bores in the crankshaft web and crankpin
must be perfectly aligned. Mark
– Make sure the oil duct
clogged.
CAUTION !
. T
HIS WILL ONLY COMPRESS THE
.
CAUTION !
,
THE CONROD BEARING
must be lined up with mark
A
and the ventilation duct
C
.
B
are not
D