The chain boxes filled up with water due to the chain box covers broke and allowed water into the chain box eventually destroying the bearings. There was another issue with the park brake assembly that destroyed the front drive gears. Please like, subscribe and comment.
This is showing how you can get your lock apart when you don’t see any screws. This was a keyed door lever lock but I mention how to do the same with the standard handle lock. By the way I had brain surgeries that causes me to search for words so be patient.