Posts
3
Joined
7/5/2022
Location
Cambridge Springs, PA
US
shanepillar13
7/5/2022 5:01pm
7/5/2022 5:01pm
My 03 rm125 crank is binding whenever I tighten the crank case bolts. It spins freely until the bolts are tightened down. I did not pull the cases together using the crank case bolts. The cases slid together with a push and a few taps from a deadblow hammer. There seems to be a slightly bigger gap between the case and crank on the left side than on the right. The transmission spins without a problem. The cases were put together in this order: 1. Crank and transmission into right side case. 2. Left side slid down on top of the rest. I have tried tapping either side of the crank with a deadblow, but nothing seems to work. Any suggestions?
To check the press width, the entire width across both webs should have been measured.
Typically in a case like this, I'd put the crank puller on the left side and pull it that direction a touch and see if it centers and frees up.
Was the trueness of the crank verified before installing? A horribly out of true crank is not going to spin freely but I assume that's been checked.
Are you 100% your bike is a 2003?
Have you 100% got the correct crank for your bike?
I think it was 2004 the RM125 Con rod was something like 4mm shorter and 1mm wider than the 2003 model.
Ask me how I know..
The Shop
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