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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: s002rat on June 04, 2006, 10:40:00 pm

Title: A/C repair
Post by: s002rat on June 04, 2006, 10:40:00 pm

I have a 84 cab on a 78 truck.  I took all the air components off the 84 motor, have it all hooked up.  Need help with the wiring though.

The pressure switch on the accumulator goes directly to the compressor clutch? where does the A/C selector switch in the cab come into play.  

DOES ANYONE HAVE A DIAGRAM FOR THIS?  

I also kinked an aluminum tube line out of the condensor.  Can I cut and splice with a compression fitting?  

any help would be greatly appreciated.  Thanks guys.


I'm also converting to R-134a.  So with the lines being open for a few years, am I safe to blow out with an air line, add new oil into the compressor, and add 134?

s002rat@yahoo.com

Title: Re: A/C repair
Post by: VileZambonie on June 04, 2006, 11:18:00 pm

p210.ezboard.com/f7387che...2525.topic

Title: > Re: A/C repair
Post by: Lt.Del on June 05, 2006, 12:48:00 pm

I wouldn't try to repair the condensor. just replace it w/ a new one. That way you won't have to worry about flushing that out anyway.

get a new drier/accumulator.  they are around $35.  You cannot flush the compressor out--not suppose to anyway, to convert to 134a.  Get a new orfice tube.

flush out evaporator and all lines.  Then add a few ounces of oil, as what is called for for your vehicle.  Get the new 134a connectors, one for high line and one for low pressure line. They just screw on.

SgtDel