AC issues -
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Unread 08-25-2012, 10:40 PM   #1
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Join Date: Feb 2012
Location: Salem, Oregon
Posts: 3
AC issues

I checked and found that my jeep is full of freon, around 50 psi, the clutch however doesn't want to engage. If I take a hammer and give it a light tap the clutch engages and blows cold air, as soon as I turn the AC off and back on the clutch doesn't engage again, is there a way to tighthen the clutch since the tap gets it to engage? Or is there another fix other than replacing the whole unit?

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Unread 08-26-2012, 08:44 AM   #2
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1993 ZJ 
Join Date: Apr 2007
Location: UK
Posts: 2,278
AFAIK the only adjustment is with the shims that set the air gap. If your problem is a weak coil not being able to generate the necessary magnetism to engage the clutch, then removing shims to reduce the air gap might help the clutch engage... or it might do nothing.

TBH, if you're going as far as to get the pulley/clutch assembly off the compressor (which is what you'd have to do to fool with the shims), you might as well replace it with a brand-new one. JeepAir sells complete new assemblies - that's clutch, coil, pulley, bearing, shims and bolt - for $80. I'm going to be doing mine in the next few months.
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Unread 08-26-2012, 09:38 AM   #3
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1997 ZJ 
Join Date: Dec 2009
Location: Dingmans Ferry, PA
Posts: 2,035
Check the high pressure switch.
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