Posted by Chris in SK on July 12, 2010 at 11:11:09 from (72.37.171.116):
I have a Ford 8700 tractor that I’d like to try and get the ac working. The compressor runs, and has a metal tag showing 134a, so I assume it’s been converted from R12, but it has never really been cold, so I guess the refrigerant is low. The only refrigerant available here over the counter seems to be 12a (Red Tek or Dura Cool), sold in packs with hose and gauge, they also have cans of oil, leak stop, sealer etc. The Red Tek 12a leaflet says it is an easy install… ‘a direct drop in replacement for R134a and R12’ and ‘is compatible with existing ac oils, seals and components’…..but the small print says R12/134A should be evacuated first. I don’t know anyone that has used this stuff, and the places that sell it don’t seem to know much. Does 12a work, can I just top up with it? If I could get two months out of it that would be ok…..a good heater is more important here. I don’t want to spend $$ taking it to an ac shop. Thanks Chris
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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