While waiting for the compressor paint to cure, I assembled the pressure release valve (106918 ) and the high pressure switch (106917) onto the hub adapter (110527):
I began removing 30 years of oxidation off the hub adapter using Mother's Mag & Aluminum polish, (or maybe it was raw aluminum anyway). I also replaced the Schrader valve in the high pressure switch fitting with a new one featuring neoprene seals. I think DMC already replaced it as the old one was the same as my new one. I used this "Slime" valve core tool (#20178 ) that clicks/releases when the valve is sufficiently tight:
I also replaced the 3 O-rings with HNBR versions that I got from the same kit listed in an earlier post, soaking them in mineral oil first and using oil on the threads:
Both switches tightened, and the polishing done. I used two small applications of the polish and just a bit of rubbing it in and off with a shop paper towel and it turned out better than I expected. Also, I think I'll find a suitable rubber plug for the hole in the top of the pressure release valve to keep water out of it:
Other than that, this is ready to go on the car.