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106
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4/30/2023
Location
Columbia , MO
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Fantasy
Should crank bearings be a press fit onto the crankshaft? If they slide on with a snug fit is that going to be an issue? I know if they are not tight in the cases they will spin and that turns into an issue.
I have noticed a difference between brands. My cr125s have press fit while yz have snug fit so probably normal.
What bike is it?
1996, 1997, 2000 Rm125s
Do those cases have steel press in inserts for the main brgs.?
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I’m talking about the crank bearings around the OD of the crankshaft
I think he's asking if the case's main bearing cavities have been sleeved, that's one solution if the bearings are spinning in the cases.
The bearings should be a "press fit", I normally put the bearings in the freezer, heat the cases and the bearing drop straight in, if they slide in at normal temperatures there is an issue.
Agree! I thought you meant on the crankshaft.
It should be a press fit usually I did my yz with parts at room temp and pulled the crank in with a puller
I did mean on the crankshaft……not the cases.
Yes, they are press fit using a crank puller on each side to install.
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