Maintenance & Technical > KX250 / KX125
Interchangable parts?
CR480R:
--- Quote from: don46 on December 28, 2007, 09:42:38 AM ---Not sure what your measuring over the pin, do you have a dial indicator on the crank wheel? It would not suprise me that they would be off .003. I think Stewart was chucking them up and truing them, but the measurements you need to be concerned with are on the bearing surfaces, I have a set of ways with precision bearings that I use, but them I've used V blocks and Lathe centers as well.
--- End quote ---
Yeah i am using a dial indicator to measure.. With the dial indicator on the o.d. of the crank wheels one at a time there is very little runout.. maybe a .0005... so I know the pin is not in right... If it were simply out of clock 90degrees from the pin I would already have it trued... this crank is messed up.. I am gonna take it apart and try again...
--- Quote from: don46 on December 28, 2007, 09:42:38 AM ---Stewart, are you truing the crank wheels in a lathe?
--- End quote ---
I bet it takes some kind of grinder to remove the hard material that the cranks are made from
BDI:
If you don't mind hearing my two cents I would not take it back apart you can spread the crank by wedging something between the counter weights or you can go the other way by putting the counter weights in your vice with the soft jaws and giving it a squeeze.
CR480R:
--- Quote from: BDI on December 28, 2007, 01:07:47 PM ---If you don't mind hearing my two cents I would not take it back apart you can spread the crank by wedging something between the counter weights or you can go the other way by putting the counter weights in your vice with the soft jaws and giving it a squeeze.
--- End quote ---
I dont mind at all... I will give that a try first... thanks for the suggestion
ihampson:
Any luck with that crank cr480? I`m having some trouble splitting the crank cases on my kx. it seems to be stuck on the crank on the ignition side. I`m using a puller and have looked all around and cant find any bolts clips etc that would stop them coming apart.
Could the bearing be siezed on the crank and in the case? It doesnt apper to have been taken apart for a while.
Is there a hidden away clip somewhere or do i just keep tightening the puller?
dont wanna strip the threads or damage anything by going too tight. I have made another post "splitting cases?" that goes into more detail.
Any of you guys got any advise?
CR480R:
--- Quote from: ihampson on December 30, 2007, 06:09:47 AM ---Any luck with that crank cr480? I`m having some trouble splitting the crank cases on my kx. it seems to be stuck on the crank on the ignition side. I`m using a puller and have looked all around and cant find any bolts clips etc that would stop them coming apart.
--- End quote ---
I havent had a chance to work on the crank again... its at my buddies shop and he's been away... As for the splitting the case mine have always came right apart with gentle taps with a rubber mallet.. Are you sure you have all the bolts out?
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