Dear All:
  This weekend, I have to replace the holey rear exhaust header on my '90.
 It looks to me as if it would be much easier to get at the left
header's bolts if I first removed the AC compressor.  The AC system on
this bus was non-functional when I bought it six years ago, so I'm
wondering if I can disconnect the AC compressor without worrying about
properly evacuating the contents of the system -- do you reckon that
after six-plus years of inactivity, there is still refrigerant in the
lines?

Best,
d.
1990 GL -- "Mudskipper"