Maintenance & Technical > KX250 / KX125
Main Bearing Repacement
jonny500:
i though my eyes were playing tricks but its the camera, cool thats sorted.
Motorrad:
Drinking tranny fluid is exactly how my bike stuck 2 years ago... crank seal let go, without warning, in a sand wash, started going slurp, and stuck, boiled the radiator also....
mustangfury:
That's comforting to know that might be my only problem.
what were you using for trani fluid, ATF? Does it seize from simply too much oil?
The back of your piston looks like my last piston when i last did the top end. It had that little melted lip on the exhaust side. Mine was even more melted. It didn't seize or mess up the cylinder though. Those previous pics are of the same cylinder wall, no changes. I put in a plug one step hotter because I though that might help with the oil problem I was having. I went down the trail and it just quit. Being fairly new to dirt bikes, I thought it was from riding it hard and hotter. Once I rebuilt the top end, I realized that wasn't my problem, went to jetting, and now i am here. Learned a lot since then.
mustangfury:
I got the cases apart. The left main bearing did not come off the crank shaft. It came out of the case still on the crank.
How do you remove the shift drum?
Is there a way of removing the crank shaft from the right case half without the special tool?
Any suggestions are appreciated.
Stang.
jonny500:
that sometimes happens. look at this vid http://www.youtube.com/watch?v=q38HUzr043c
those tool are expensive. but you can see what you need to do. if you made a case spliting tool like mine or bdi's steering wheel puller, you can use that. if you weld 2 or 3 bolts even in length to the outer bearing case and then use nuts on the end. if you do weld on the bearing be sure to sheld the crank from splatter. i have not done this before i have used the proper tool but see no reason why it wont work, its an idea anyway
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version