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The 85 DL I bought 2 years ago has a non-working R12 AC
Inspection has given me the following results:
Positive power: turning AC knob on turns fan on low
power goes to dryer/receiver
power does not get past dryer receiver switch
when dryer/receiver is bypassed, compressor clutch engages and turns with very minimal bearing wear noises
Check through sight glass in dryer/receiver: the glass looks like there is water on it and a rapid wind is blowing by
Pressure check: low side (just past dryer/receiver) shows 23p.s.i.
high side (on back of compressor) shows 0 p.s.i.
Have found two hoses for about $35 each, dryer/receiver for $27, and r134 retrofit kit (lots of O-Rings, a piece of hose and lube) for $30.
While relegating myself to replacing hoses and doing a retrofit, what do you now know I have a problem with?
Is dryer/receiver switch shot, or does it not engage when there is no pressure?
Can just switch be replaced or do I replace whole dryer/receiver?
Is compressor shot? Or can this be detected with (probably) no freon inside?
Compressor: VOLVO part #6848077
Dryer/Reciver: Parker 129953
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