AC compressor clutch squeal - Defender Source
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  #1  
Old July 21st, 2005, 08:37 PM
artm
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Arthur Maravelis
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AC compressor clutch squeal

Well, I got back the 110 with AC just installed - I put in the under dash system from George.

I'm noticing a squeal when the clutch kicks out. Also, the clutch seems to be coming on and off too frequently. In idle, it can kick in for a few seconds, stop and re-kick in in a few more seconds. If it works off a temp sensor can I simply bypass it to work as long as the AC is on?

Any thoughts appreciated.
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  #2  
Old July 22nd, 2005, 08:02 AM
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Mike Hippert
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I don't think it would be good to bypass whatever operates the clutch on the compressor, if it blows cold air then I would think it is working right. I have never been in a defender with a working AC system so I don't know how fast the clutch should go on and off but a few cars I have been in with AC the compressor did cycle on and off pretty fast at times. How loud is the squeek?
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Old July 22nd, 2005, 09:18 AM
Jase
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Is the AC compressor new? The squealing can be a sign of the AC compressor going bad. The cylcing on and off (engage / disengage) sounds normal.

I just had to replace mine, the squeal started out quiet, then louder and louder until is was an attention getting.
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  #4  
Old July 22nd, 2005, 09:55 AM
artm
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Arthur Maravelis
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The squeal is minor but you can hear it in medium fan speed. At high speed you can't.

Yes,the compressor is new. Maybe it wasn't filled with oil? They do take oil, right?
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  #5  
Old July 22nd, 2005, 01:02 PM
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Robert Ragland
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I don't think a new clutch should be squeaking. The belt is new, as well, right?
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  #6  
Old July 22nd, 2005, 01:06 PM
artm
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Arthur Maravelis
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Yep, belt is new as well.

So, do these things take oil?
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  #7  
Old July 22nd, 2005, 10:52 PM
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Most come shipped with oil - who ever charged it would have added oil if required.
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  #8  
Old July 22nd, 2005, 11:23 PM
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my beltsmakea noise when I start it up but nothing when I activate the AC. I am getting belts replaced and some inspection will report later on
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  #9  
Old June 14th, 2010, 03:57 PM
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Bringing this back from the dead. Art, did you ever resolve this? I have a similar AC compressor clutch noise when it is cycling. Loud, attention getter, can be heard inside over the diesel. I'm assuming clutch but haven't heard too many folks needing to replace an AC clutch. My unit is nearly unused so it could have been from lack of use.
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  #10  
Old June 14th, 2010, 04:34 PM
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Arthur Maravelis
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Dave, I never did anything to mitigate it as it's not annoying and still works fine. It never was "loud", just noticeable.

It's not the belt so must be the clutch.
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