Quote:
Originally Posted by Rex Perry
Normally the nut bar is welded inside the forward door post. If, for some reason, those welds fail the nut bar can drop down the door post behind the window escutcheon. In my particular case, the head of one of the 1/4x20 screws had been twisted off leaving the remainder in the nut bar. With that broken screw remaining in the bar, it was trapped by internal structure and could not slide down behind the escutcheon.
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The tapping block (i.e. nut bar) was used prior to D-nuts and seem to have frequently broken loose (as in your case). See hinge pillar designs d1, d2, d3 and, d4 at
http://aafords.com/aa-body-types/bod...s/mirrors/#pib.
I have made/replaced the tapping block used at the sun visor and also lower on the hinge pillar.
As I recall, I held the tapping block in place with bolts before welding it to the inside of the pillar with a wire feed welder (not an easy place to weld).