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97 OBW AC question

Featured Replies

A recharge takes about 3 cans right? My charge must of leaked out the high pressure line with the o-ring on the compressor.. I went to turn the AC on after I did the headgaskets and I noticed the compressor did not kick in, that's when I later saw the traces of oil around the port.. Now lucky I still have some left over AC o-rings but since I have to recharge I might as well do the dryer as well..

 

Last year was painful in the winter without AC help clearing the windows... I sure as heck don't want to wait that long..

 

lol and I thought I would not have any more use for my manifold gauges and vacuum pump.

If you have traces of fluid around the port, why not suspect the port of leaking?

  • Author
If you have traces of fluid around the port, why not suspect the port of leaking?

 

because from what I looked and searched around here the o-rings that are on the lines that go to the compressor are prone to leak.. heck it hissed when I went to move the compressor out of the way when I pulled my motor.

 

*edit

 

3 cans should be enough

Edited by 1-3-2-4

Valves leak too, why go for the common solution when there is a potential obvious one?

 

The Oring leak may have been caused by you from stressing the fittings.

 

How do you plan on evacuating the system? Do you have pressure gauges?

  • Author
Valves leak too, why go for the common solution when there is a potential obvious one?

 

The Oring leak may have been caused by you from stressing the fittings.

 

How do you plan on evacuating the system? Do you have pressure gauges?

 

 

I have a friend with a evacuation system.. first I have to see how much pressure is in the system with my manifold gauges, I wont be able to get around to that until Monday at least.

 

the leak is really only at the fitting because when it did hiss i had to tighten the bolt just a bit more and it stopped.. and if it's anything like my 95 legacy the o-rings were shot.

Replace all the o rings and i would replace the valve too

  • Author

ok I remember my other legacy had an issue with the valve as well.. I forgot what type of valve it used.. first one I got turned out to be too small then the second one was just right.

  • Author
What do you mean by "the valve"?
The high and low ports have valves that screw in.. or I should say uses a schrader valve.

Will you have someone who knows about AC helping you?

The high and low ports have valves that screw in.. or I should say uses a schrader valve.

 

Ahh ok, gotcha. Thanks :)

What do you mean by "the valve"?

 

The valve is the schrader valve. It is the spring loaded plunger that screws down inside both low and high ports. With a special tool, the valve unthreads and can be removed. A counter guy at a parts store will sell you the tool and replacement valves. They are cheap.

  • 3 weeks later...
  • Author

Wanted to say I finally got around to charging the system yesterday I replaced the dryer at the same time for reference the pressure switch is 27 mm.

 

replaced the O-rings and that was it.. I did a hour for the vacuum pull and waited 10 min for any change of loss of vacuum which was none, I did the part of the charge filling the high side with liquid by inverting the can did that till it got to 20 Psi, then I did the rest on the low side for vapor (valve pointed up) and I filled with two cans (23 oz)

 

Now I don't have the book in front of me but I took two temps ambient air temp was around 80 F and air out of the vents was 53 F Which seems to be about right.

  • Author

It was pretty easy I forgot to check if any junk got built up in the evaprator box but I will check tomorrow.

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