suction throttling valve
#1 Is there a way to test the suction throttling valve?. I have tested the vacuum power unit and it holds vacuum so i know the diaphragm is not leaking. Can you test the function of the valve itself without disassembling it or charging the system to see if it functions. The system will be charged with R12 . #2 Who rebuilds the original accumulator dryer with new desiccant besides classic auto air located in Tampa FL ? I have a 1964 shop manual, it instructs you how to disassemble & repair it & adj it, but no test procedure to insure that it functions correctly. Thank you
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Permalink Reply by Kurt on
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#1 Other than testing the vacuum power unit, I don't know of a way to test the valve itself with a fully charged system. It is a simple valve with spring pressure (including the vac power unit) on one side & pressure from the freon in the evaporator on the other side. As long as it's clean & moving freely in the cylinder, it should be good. The weak component on these tends to be the STV diaphram (different than power unit diapram). If this leaks, your freon will escape. After a few have gone bad on me and they now want $115 for them, I converted my system to a clutch cycling system. So far I have been happy with it.
#2 I don't know who rebuilds them but bought a replacement at Autozone. It is slightly shorter that the original but wasn't hard to adapt the bracket to fit it. Are you going for 100% authenticity?
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Permalink Reply by CHRIS CARLSON on
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Kurt It's going to be a driver for now , but i like to keep it original. Where did you obtain that seal? do they fail regularly?
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I have had leaks from this STV diaphram a few times over the years. It looks like Old Air Products and Original Air Group have them.
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accumulator dryer
Posted by CHRIS CARLSON on December 6, 2023 at 10:54am 0 Comments 0 Likes
Who rebuilds original AC accumulator dryers for 1964 Cadillac? I have been on Classic auto air in Tampa FL wait list for over a year , There is one on Old air products web site that looks very similar to the original # 21-4214A but states it fits 1962 Gm cars, The one recommended for a 1964 Cadillac is half the length 21-4215A What is everyone using ? I would prefer to be as original as possible. Thanks
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