Ninja tips: AC systems |
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Ninja tips: AC systems |
technicalninja |
Mar 24 2023, 07:32 AM
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#1
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Senior Member Group: Members Posts: 1,229 Joined: 31-January 23 From: Granbury Texas Member No.: 27,135 Region Association: Southwest Region |
This thread is my base AC thread for suggestions, questions, whatever...
I run https://granburyautoac.com/ I specialize in automotive heat and air conditioning systems. I've been doing AC work since 1983 and have seen all of the changes, good and bad, that have occurred over the last 40 years. I'm keeping the first post short as they always show up at the top of each page and if long, they clutter up the thread... |
technicalninja |
Mar 24 2023, 09:01 AM
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#2
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Senior Member Group: Members Posts: 1,229 Joined: 31-January 23 From: Granbury Texas Member No.: 27,135 Region Association: Southwest Region |
When replacing a compressor, it is stupid important to rotate the compressor by hand at least 20 360-degree revolutions. This clears the cylinders of oil and keeps the compressor from hydro locking from the start.
If a compressor hydro locks, it sounds like a "mouse with a machine gun". You get a quick "Brrt" and you're done... Now, a late modern PWM controlled compressor is at full de-stroke when installed and you cannot really clear them. They add stroke slowly and tend to be self-clearing but I am a creature of habit and rotate them anyways. Some PWM compressors (German stuff mostly) do not have magnetic clutches and cannot be rotated by hand once the belt is on. I rotate those before I place the drive belt. |
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