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Old 08-16-2008, 12:05 PM
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Running AC compressor without R134a

Working on a new bracket for the AC compressor and was wondering if it would hurt the compressor to run it before adding refrigerant? It did come with oil. I may not want to add refrigerant for quite awhile because of other engine do overs and repainting the engine bay so will I harm anything? Would it make a difference if I have hosed connected or not?

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Old 08-16-2008, 12:49 PM
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I don't BELEIVE the clutch on it will engage for more than a second or two with no refrigerent..if you DO turn it on...
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Old 08-16-2008, 12:49 PM
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re;a/c compressor

Quote:
Originally Posted by Jagman06
Working on a new bracket for the AC compressor and was wondering if it would hurt the compressor to run it before adding refrigerant? It did come with oil. I may not want to add refrigerant for quite awhile because of other engine do overs and repainting the engine bay so will I harm anything? Would it make a difference if I have hosed connected or not?
I don't think I would do that unless you have no intention of kicking the compressor on. You can check the compressor clutch by powering up the clutch w/o the engine running & trying to move the clutch by hand,otherwise the pulley just runs on the sealed bearings like the a/c was off. Tom
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Old 08-16-2008, 01:16 PM
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Providing you do not attempt to engage the clutch, it will run on the nose bearing forever.
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Old 08-16-2008, 04:55 PM
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To be safe just unplug the power wire going to the clutch. That way there's no way it can engage the compressor.
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Old 08-16-2008, 06:22 PM
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Quote:
Originally Posted by Jagman06
Working on a new bracket for the AC compressor and was wondering if it would hurt the compressor to run it before adding refrigerant? It did come with oil. I may not want to add refrigerant for quite awhile because of other engine do overs and repainting the engine bay so will I harm anything? Would it make a difference if I have hosed connected or not?
Given how incredibly expensive a compressor failure is to clean up and get out of the airconditioning system, I'd make double sure that thing didn't operate till I was ready to charge the system. The simplest way to do that, short of not installing it, is to not (I said NOT) to connect the clutch connector to the electrical system. That will let the pulley freewheel without engaging the compressor.

Bogie
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Old 08-17-2008, 03:03 AM
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I third the unhooking of the wires.
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