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Hooking up to nitrogen tank
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jjrbus
User
Oct 22, 2019, 3:56 PM
Post #1 of 5
(1601 views)
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Hooking up to nitrogen tank
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Greetings, been long time since I have been here. Long story so I will do the Readers Digest version first. I have a 93 Toyota pickup V6 auto. With lots of help from this forum I converted it to 134a a couple years back and it has mostly worked pretty well. I suspect my expansion valve needs replacing and will want to nitrogen test the system before vacuuming and taking to get refilled. I have 3 AC manifolds, one for 410a and 1 I am 100% sure is for 134a and another old junky cheap one I am fairly sure is for 134a. I could use the cheap junky one but do not trust the fittings on it. My nitrogen tank has what appears to be a 1/4 inch male flair fitting to hook up to. My good Harbor Freight 134a manifold yellow hose will not connect to the 1/4 inch flair and is too big, guessing 5/16 inch female flair. My cheap old junky set yellow hose will attach to the 1/4 male fitting on the nitrogen tank. I though I needed an adapter but I see nothing on the net that is 1/4" female to 5/16" male. Plus I am not 100% sure the fittings on the HF set are 5/16" So simply my HF 134A manifold will not connect to my nitrogen tank, whats a poor boy to do?
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Hammer Time
Ultimate Carjunky
/ Moderator
Oct 22, 2019, 5:21 PM
Post #2 of 5
(1594 views)
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Re: Hooking up to nitrogen tank
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Why are you even messing with Nitrogen? Just spend $10 for a can of R134A and use that for leak testing. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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jjrbus
User
Oct 22, 2019, 5:53 PM
Post #3 of 5
(1588 views)
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Re: Hooking up to nitrogen tank
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I have a tank of nitrogen so no need to spend $10.
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Hammer Time
Ultimate Carjunky
/ Moderator
Oct 22, 2019, 5:55 PM
Post #4 of 5
(1586 views)
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Re: Hooking up to nitrogen tank
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OK, good luck with that. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
Ultimate Carjunky
/ Moderator
Oct 22, 2019, 10:34 PM
Post #5 of 5
(1572 views)
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Re: Hooking up to nitrogen tank
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134a is $4 bucks already down for the season. Price is "Winterized." Why mess with other gasses for anything to do with this about now? Guessing thread size? Good luck, there's about 5 different ways to make threads in common use then add HF products it's now infinity. Don't forget reverse threaded anything either to complicate that! T
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