Sunday, April 19, 2009

Cub 125 Has Wheel Problems

As mentioned before, one of the front tires goes flat, almost overnight. The previous owner had replaced one of the front tire and rim assemblies with a new one. The rubber and the paint on the rim prove correct - it is a fairly new replacement.

New being the operative term; ie the older machines were designed to work on and maintain, the old rim has a grease fitting to put a grease gun on and the new one doesn't.

Well as I went to pull off the front rim, it wouldn't come off - the bearing was hung up on the shaft. The new bearings that couldn't be re-greased from time to time, have failed, very prematurely, I might add. The void between the bearings had grease, but both the inner and outer bearings have failed - the outer one had ground down to the point that there were no balls left and the bearing race had cut 1/4 the way thru the axle shaft.

New bearings and a new axle shaft are required, as well as fixing the flat. I had pulled both front wheels and pressed out the bearings. In the one picture, the 40 year old bearings from the old wheel are on the left and the two year old bearings are the pieces on the right. Althought the old bearings are getting rather loose, they are definately more intact than the 'new' ones. They don't build 'em like they used to.

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