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Old 05-11-2013, 09:04 AM
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Tomguy Tomguy is offline
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Join Date: Aug 2002
Location: near Scranton, PA
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Quote:
Originally Posted by vandor View Post
Tried charging the AC (has been converted to r134a and has all new hoses) and the compressor clutch started slipping.
I wonder if it's adjustable?
Clutch isn't adjustable on it... you have 2 possible issues. Either like Al says it's overcharged, or you have a common issue with backyard / novice R134a conversions...

If the system was not COMPLETELY flushed of R12 and oil and even a small amount of oil was left, AND if the system was not vacuumed VERY low prior to filling, the R12 oil & R134a oil and/or R134a oil and moisture in air mixed, producing an acid that eats through the compressor's mechanicals and can cause it to seize. When I did my Jeep's R12 > R134a conversion I replaced everything but the evaporator (didn't want to take apart the dash to do it). I flushed it fully.
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