How do I replace the lock nut in the roof of the dishwasher?
The upper spray arm is dropping out as the threaded spray arm retainer does not positively screw into the lock nut. It seems the existing lock not thread has "enlarged" so the threaded retainer does not firmly lock into the lock nut.
I have the lock nut but cannot see how to remove the existing and install the new.
Geoffrey Smith, February 2011
