Search found 172 matches

by GM Tech
Wed Feb 27, 2019 1:03 am
Forum: Automotive Air Conditioning Procedures, Tips and FAQ.
Topic: New to forum, looking for input on where to introduce PAG oil
Replies: 9
Views: 10465

Re: New to forum, looking for input on where to introduce PAG oil

I worked where we made the compressors you are talking about-- viscosity of oil will not cause harm- is not a big deal- they went back and forth- and when push came to shove, they used whatever oil most easily fit the bill- cost wise. I am more concerned when you say you flushed your system---why oh...
by GM Tech
Wed Feb 27, 2019 12:30 am
Forum: Automotive Air Conditioning Procedures, Tips and FAQ.
Topic: 134A R4 conversion seal failure?
Replies: 1
Views: 4835

Re: 134A R4 conversion seal failure?

The seal leaks because it is not a double lip type seal. All GM shaft seals went to double lip style in '96- so you can replace the seal with a seal kit you can easily buy online. The type of refrigerant is not what causes the leaky shaft seals.
by GM Tech
Fri Feb 22, 2019 12:03 pm
Forum: Automotive Air Conditioning Forum
Topic: A6 compressor shaft seal
Replies: 5
Views: 5544

Re: A6 compressor shaft seal

That steel ring must be a replacement for the original ceramic ring design. I was not aware aftermarket went to a steel ring- since I don't use it anyway. Must be cheaper to use steel other than ceramic. Anyway, you throw the steel ring away as well...all you need is a double lip seal like what goes...
by GM Tech
Sun Feb 17, 2019 3:29 pm
Forum: Automotive Air Conditioning Forum
Topic: A6 compressor shaft seal
Replies: 5
Views: 5544

Re: A6 compressor shaft seal

Throw the ceramic seal and metal bird cage assembly away- the new double lip seal seats on a shoulder. the o-ring goes in the deep o-ring groove just above the shoulder, and the snap ring groove is the upper groove. The snap ring holds the new lip seal tight against the shoulder seat.
by GM Tech
Wed Jan 23, 2019 9:59 pm
Forum: Automotive Air Conditioning Forum
Topic: R4 ac compressor shaft seal for 1980 Corvette
Replies: 4
Views: 5033

Re: R4 ac compressor shaft seal for 1980 Corvette

That whole assembly can be replaced with the new style double lip seal used in newer R-4, HD, and V-5 applications..Done it many times...
by GM Tech
Tue Oct 30, 2018 3:01 am
Forum: Automotive Air Conditioning Forum
Topic: Time sensitive question, 97 tahoe W/O rear air
Replies: 2
Views: 6571

Re: Time sensitive question, 97 tahoe W/O rear air

wtf--- 45 degree ambient and you say pump is bad......????? Of course it kicks out right away, there is nothing to do....pump will only run when system pressure exceeds 47 psi-- and your ambient is right on top of that. Switches are doing their job.. Your truck is not a refrigerator- don't expect co...
by GM Tech
Thu Oct 11, 2018 3:38 am
Forum: Automotive Air Conditioning Forum
Topic: 2010 GMC Sierra cycling strange pressure readings
Replies: 2
Views: 8375

Re: 2010 GMC Sierra cycling strange pressure readings

4 lbs????? sounds like an old suburban dual air----A sierra should be at about 2 lbs-- if no rear evaporator/single system- where is OT? in condenser outlet? or inline in front of evaporator
by GM Tech
Sun Oct 22, 2017 10:09 pm
Forum: Automotive Air Conditioning Forum
Topic: Ford E6DH compressor
Replies: 20
Views: 13956

Re: Ford E6DH compressor

If you are flushing with anything other than refrigerant- then that is most likely your problem. Aftermarket flushing agents are degreasers- and you have to get all the flushing agent out of your system! Merely purging with air, or extended vacuums foes not do this. Your evap and condensers have mul...
by GM Tech
Fri Oct 13, 2017 2:21 am
Forum: Automotive Air Conditioning Forum
Topic: weird Intermittent problem
Replies: 2
Views: 3348

Re: weird Intermittent problem

Air comes out vents (only) when accelerating? Do you have vacuum controls for air doors in HVAC box? or electric controls? Yr make and model of car would give us more hints
by GM Tech
Wed Sep 27, 2017 1:26 am
Forum: Automotive Air Conditioning Forum
Topic: Micron gauge
Replies: 2
Views: 3413

Re: Micron gauge

Tee it into your vacuum pump- anything below 500 microns is excellent--but it all depends on your vacuum pump's ability to pull a good vacuum- you can always deadhead the micron gauge directly into the vacuum pump to test the pump only- and its ability to pull a good vacuum- some vacuum pumps are wo...

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