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Unread 07-07-2013, 11:08 PM   #1
quintdavison
Registered User
1996 ZJ 
 
Join Date: Feb 2013
Posts: 6
A/C Clutch question

Hey all. First time poster here! Have a 96 4.0 with an ac question. Ac blows nice and cold, however sometimes when I start the car or turn the ac off then back on the clutch won't engage. A slight tap on the front of the pulley and it fires right up. Is there anything I can clean, adjust, or lube to fix this? And if not, I see there are clutch kits available, is that most likely the fix? And last question, do I need to evac the system to work on or replace the clutch? Thank!

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Unread 07-08-2013, 06:57 AM   #2
a70eliminator
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Join Date: Dec 2004
Location: Kent Ohio
Posts: 864
Sure you can R&R the clutch without effecting the refrigerant system.
All you do is take a 10mm socket and loosen the center bolt while holding the clutch pulley with a big channel lock plyer or however you figure out how to hold it from turning while you loosen the bolt.
Then carefully work the clutch off the splined shaft of the compressor, (don't pry too much, it needs to be pulled straight off) be careful not to loose the little 1/4" shim washer that will be under that bolt behind the pulley, the shim is a spacer to provide clearence between the clutch disc and main drive pulley, without the spacer the clutch can't disengage.

Once you have the clutch hub off the next step is to remove the snap ring that holds the main drive pulley, you'll need a snap ring plyer, now behind the main drive pulley is the 12v coil thats held on by a philips screw i think can't quite remember but it's easy to get off anyhow.
This 12v coil solenoid may be your problem for sure, check all the connections closely especially where the coil wires are soldered comming out of the coil itself. Well that should get you started.
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Unread 07-08-2013, 05:49 PM   #3
quintdavison
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1996 ZJ 
 
Join Date: Feb 2013
Posts: 6
Awesome thanks for the info! Is there any cleaning that can be done to try and salvage the current unit or is a new clutch in order? I see rock auto has the kit for fairly cheap ($46).
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Unread 07-08-2013, 06:31 PM   #4
a70eliminator
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Join Date: Dec 2004
Location: Kent Ohio
Posts: 864
Clean and inspect always a very good start, identify the root problem and go from there, you can throw parts at it too.
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