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Old 08-12-2019, 07:05 PM
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A/C Manifold Gauges

I'm a retired tech and recently had to replace my old gauge set. OK I bought a cheap set from Harbor Freight since I don't use them much anymore. Problem, When I tried to charge the A/C in my SR the low side would not fit all the way onto the fitting (lock on). The fitting on the end of the low side hose it the type that requires screwing a knob to depress the shradder valve. A friend has the same gauges and the same prob. I scrounged around my shop and found an old one without the knob and it snapped on perfectly. Anyone else run into this, are there two different types charging ports?

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Old 08-12-2019, 07:42 PM
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No. I have a MATCO set

134a ports are all the same. The gauges from HF are made wrong IMHO
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Old 08-12-2019, 10:24 PM
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The hf hose ends suck. I bought the ends from my Mac tool guy and they fit right in the hf hoses. The old hf ends just unscrewed and the Mac ones screwed on.
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Old 08-13-2019, 06:37 PM
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Thanks for your input. Always used MAC or Snap-On when I worked. Should have known better than buy that kind of crap.
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Old 08-14-2019, 11:18 AM
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Stump, I'm the same as you. Made my living repairing automotive A/C. I also bought a HF manifold and have no problems with either Hi side or Low side. Push harder.

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