On my 88 GL AC there is a cap screw with an allen head recess. This
screw, and the steel bushing that it goes into are part of the
tightening system to hold the AC compressor in place. On my van the
screw/bushing pair has been cross threaded. I can get a new cap screw
easily and cheaply enough, but the bushing is another matter. Camelback
VW in AZ sez the bushing is not available by itself. Only as part of the
bracket assembly. Cost for AC compressor bracket --- $195. No way. So,
the next best thing is to run a proper sized tap down through my old
bushing to straighten up the threads, then put in a new screw.

My questions. Does anyone know what size and what thread count is the
proper one for a tap that would  match the hole in the bushing?

TIA,

John Rodgers
88 GL Driver