125cc Sportsbikes Forum banner

crank shaft extraction/separating from flywheel problem

2.2K views 12 replies 5 participants last post by  Old Painless  
#1 ·
where can i source the puller plates rotax part no.277 455 or something that do the job
got what i thought was a cold siezer where wheel locked up next time ill warm bike up first lessons learned,and lost compression,so taken out engine checked piston/has scores but barrel looks fine which i fought was the going to be the problem not to sure now,Also checked crankshaft was turning ok with a rachet and find at a certain point when rotating crank becomes stiff to turn so now im thinking somethings wrong with the crank (is this normal)(there is a bit of a marking going along one side of crank as if the conrod has hit it and pulled some of the metal away so deside best bet was to strip down engine,engine is stripped down to the point of flywheel and crankshaft connecting where im stuck as cant separate (is it puller plates i need for this not sure where i can source this) is there something else i can use that will do the job? now all bearings look great/feel great not checked whats behind the flywheel yet to see if theres damage etc behind there

first time trying to repair a engine so any info would be great
along with somewhere to get the part i need or something similar that will work?
so far i need to get a new piston and 90% sure ive damage the crankshaft is there any where i can get these items cheapish?

thanks for any info and hope u can understand what im saying as i confuse my self sometimes
 
#3 ·
The rough spot in the crank will be dead main bearings.
 
#8 ·
If you want to know what happens when you try and ride it with some play in the con rod because you think it'll be ok, it blows up lol
Image
 
#11 ·
Tried your local aprilia specialist ? Wouldnt cost the postage then ?