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I had asked in the general questions thread about the AC in my F150, I'd recharged it only to find the high side valve was leaking. I couldn't get it booked into the shop before July 1 and realized last weekend that all the R134 had leaked out the bad valve already, and that this handy thread was back up for reference. So I replaced the valve ($5 at auto zone), dryer and o rings ($40 from Napa), pulled -26psi of vacuum on a Harbor Freight air powered vac pump, left it for a bit and filled it up again. It's been running like a champ for maybe $120 worth of parts including the gauge set I bought and 2 cans of wasted refrigerant. A great result. The price of R134 seems to vary a lot between stores and brands, the cheapest stuff I found was at Harbor Freight, they had a decent selection of auto AC tools as well and I was impressed by the air powered vacuum pump. It did take a lot of air to pull the vacuum >20psi, my small 110v 2hp compressor couldn't hold it past 15.
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Jun 23, 2021 02:45
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Raluek posted:i must be misunderstanding something. how on earth can you get < -14.7psig? car at the bottom of the ocean? I may not be clearly explaining the process or using the right units but with a vacuum pump connected to the system (and after disconnecting it with all valves closed) I had a reading of -26psi on the low side gauge (see blue gauge in op) Edit: it’s the units causing confusion , the op gauge shows it more clearly but my set has a scale to -30 with just a ‘’ to indicate inches of Mercury not psi. sanchez fucked around with this message at 16:25 on Jun 23, 2021 |
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Jun 23, 2021 16:22
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