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metalmulisha

output shaft oil seal problems

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hey guys just after some assistance i had a leaky output shaft seal so i went to replace it and thought id do the right thing and pull the collar off and replace the oring but i cant remove the collar any ideas??

(the seal is already out) 2006 YZF

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Use a center punch in the center drilling hole in the end of the shaft and a hammer to tap the shaft fairly gently straight inward. This will slide the shaft back in the bearings 2-3mm and break the collar free. Then, pull the shaft back toward you, put the trans in gear, and grab the collar at right angles to the shaft with a pair of pliers. Rotate it on the shaft and pull outward.

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Make sure you chain isn't too tight when you put it back together. If it is even marginally tight it will cause this seal to leak. A properly adjusted chain on these bikes looks WAY loose. Be sure to measure...

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If chain tension produces a leak at the output shaft, the OS bearing is way beyond usable.

Excessive chain tension may break your hub, the chain itself, or even the crankcase, but it won't cause a leak.

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