Reply to "Rear Upright Pivots"

I think there is another part of making sure the upright pivots work as intended.

Referencing JFB's nice illustration:

Dry fit parts 12,13,17,19,17,13,12 in the lower swing arm 25 and slide pivot shaft 22 through. There should be virtually no side play between the parts.

Tighten the pivot shaft nuts. Well before full tightness is reached, all the parts on the shaft should be squeezed tightly in place, unable to rotate on the pivot shaft.

This ensures that upright mounted bushings 15 and 16 will bear against stationary washers 13 and sleeve 19.

If 13 and 19 float on the pivot shaft, chances are that they will rotate on the pivot shaft.

Over tightening the pivot shaft nuts to lock the related parts in place will obviously distort the swingarm.

For the backyard mechanic (me) the fix was to find replacements for part 17 that were bit thicker. I got machine bushings from the pick-a-nut aisle. I flat filed a pair of them to a nice tight dry fit. After the clearance was set, I greased everything up and put it together.

Now I'm pretty sure I've done all I can to be sure the moving parts move and the stationary ones don't.

My grease fittings are in the bottom center, like Rocky.