On my 51, I cut off the nuts to get the unit out, then I used heat to loosen the mechanism. It seems to me that part of it remained in the cab, and I used "Fluid Film" on that part. When I put it back together, I used brass nuts. It works fine now.

1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed

My Chevy Master 4 Door is on the Road!