My 26 DB pushed awful hard when loading and unloading so the logical conclusion was the brakes were frozen. I put the rear end up on jack stands and sure enough the left rear was pretty much locked up. See the pictures for what I found. My theory is, the PO did not see the need for a cotter pin the last time the wheel was off. This resulted in the nut over tightening with the resulting failure. Wheel bearings, key slot and all other components are fine. The wheel bearing is cleaned and the axle is reinstalled with appx. .005 end play. I hammered the grease retainer back to an acceptable working condition.
However before reinstalling the wheel (after finding a new key) could someone who knows a lot more about it than me please comment on my theory? If the missing cotter pin is not the problem what else should I be looking for.
Does anyone have a source for the key? I looked at Myers and did not see any. It appears to be 5/16" brass?
Thanks all for your valued input.