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Author Topic: Ac clutch  (Read 983 times)

Offline Chase2008

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Ac clutch
« on: September 18, 2017, 05:22:28 PM »
So went to run to the store and had smoke in the engine. Turned it off and popped the good. Ac clutch (I am fairly certain) was red hot. Seized up. Let it sit overnight and die some research on a re-route to bypass. When I pulled the belt I realized the pulley was still free. So I unplugged the compressor from electrical, re installed original belt and fired it up. Seems to be fine

Can I run it like this? Or should I try the bypass route?

Offline Woodchuck

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Re: Ac clutch
« Reply #1 on: September 18, 2017, 05:29:23 PM »
As long as it sounds ok, you will be ok for a while. It may not last very long as that bearing got very hot when the clutch seized.
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Offline Chase2008

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Re: Ac clutch
« Reply #2 on: September 18, 2017, 05:50:18 PM »
So would it be better to bypass the ac altogether?

Offline Chase2008

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Re: Ac clutch
« Reply #3 on: September 18, 2017, 06:14:28 PM »
Never mind. Belt rubs on the bypass

Offline Chase2008

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Re: Ac clutch
« Reply #4 on: September 18, 2017, 06:15:53 PM »
So if a buy a bypass pulley (don't need ac and don't want to drop a grand on a new compressor and install) how do I get the ac system discharged so I can pull the compressor?

Offline biggfish

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Re: Ac clutch
« Reply #5 on: September 18, 2017, 06:50:03 PM »
You would have to go somewhere with a recovery machine. If you are replacing it yourself you have to evacuate the system again after the new compressor is installed before you can recharge the system.

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Offline Chase2008

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Re: Ac clutch
« Reply #6 on: September 18, 2017, 06:54:33 PM »
Thanks. Not looking to install a new compressor. Just want to pull the old one and install a pulley

Offline winshooter88

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Re: Ac clutch
« Reply #7 on: September 18, 2017, 07:07:02 PM »
What he is saying is that you need to go to someone with a recovery station to remove the freon from the system as it is illegal to discharge it into the atmosphere. Once the freon is out just remove the compressor and be sure  to plug the lines so that if you ever do want to put a new compressor on the truck the lines won't be full of crap.

Offline Kokanee

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Re: Ac clutch
« Reply #8 on: September 18, 2017, 07:22:31 PM »
Thanks. Not looking to install a new compressor. Just want to pull the old one and install a pulley

Easy enough to do, few nuts/bolts and a snap ring or two.  Problem is that the clutch failure is normally just a symptom of a compressor failing and locking up due to component wear/failure/overheating.  Check to see if there is a high pressure relief valve on the compressor head, and if it looks like it has "popped".  If it has PAG oil coming out or appears wet, bet money the compressor went South.  What brand compressor? 

Offline Sandberm

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Re: Ac clutch
« Reply #9 on: September 18, 2017, 08:40:19 PM »
What vehicle is this problem for?

Offline jackelope

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Re: Ac clutch
« Reply #10 on: September 18, 2017, 08:48:07 PM »
You might be able to just replace the clutch without replacing the whole compressor. Also know that your defrost won't be as effective with no compressor.


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Offline Chase2008

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Re: Ac clutch
« Reply #11 on: September 18, 2017, 10:24:52 PM »
Thanks all for the replies and info. Vehicle is a 2003 Jeep Liberty. Don't know the brand of compressor

Offline jackelope

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Re: Ac clutch
« Reply #12 on: September 19, 2017, 02:05:37 PM »
I've definitely facilitated the replacement of compressor clutches on Jeep Liberty without replacing the entire compressor.


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" In today's instant gratification society, more and more pressure revolves around success and the measurement of one's prowess as a hunter by inches on a score chart or field photos produced on social media. Don't fall into the trap. Hunting is-and always will be- about the hunt, the adventure, the views, and time spent with close friends and family. " Ryan Hatfield

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Offline winshooter88

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Re: Ac clutch
« Reply #13 on: September 19, 2017, 03:10:08 PM »
Replacing the clutch is fine unless the compressor being froze up is the reason the clutch got hot.

Offline Kokanee

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Re: Ac clutch
« Reply #14 on: September 19, 2017, 03:51:59 PM »
I've definitely facilitated the replacement of compressor clutches on Jeep Liberty without replacing the entire compressor.


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If it is factory, it is a Sanden Compressor, made out of Wylie, Texas.  Coil is from Mexico, armature and rotor/pulley is from Wylie (These have all been relocated to Mexico for current production).  remove the U-Nut to remove armature plate - remove shims between surface of armature plate hub and mainshaft shelf, snap ring to pull the rotor, and snap ring to remove the coil.  Reverse assembly with the exception of the shims required (New set should come with kit) to set the air gap between the armature and rotor friction surface (0.030 ~ 0.070"). 

 

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