Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.

AC clutch Scraping Pully After Bearing Replacement

Thread Tools
 
Search this Thread
 
Old Jan 5, 2015 | 01:58 AM
  #1  
SeniorXJ's Avatar
Thread Starter
Senior Member
15 Year Member
Liked
 
Joined: Apr 2009
Posts: 819
Likes: 7
From: VA
Year: 1998
Model: Cherokee (XJ)
Engine: 4.0
Default AC clutch Scraping Pully After Bearing Replacement

So the bearing in the AC compressor was shot & i replaced it with a kit off of Ebay for $83 bucks which beats out the cost of a new compressor plus the cost of vacuuming & refilling the system.

With a new clutch included then installed, it made a horrible scraping sound which ain't normal. I decided to clean the old clutch, greased it up, then installed it. The metal to metal scraping is less, but still not normal. I hand tightened it very lightly till it was good enough to engage the clutch, then let it sit still when the AC is off.

I will try to get a short video of it to help figure this all out. In the mean time, does anyone have any ideas to remedy this?
Reply
Old Jan 5, 2015 | 07:29 AM
  #2  
Firehawk068's Avatar
Senior Member
 
Joined: Jul 2011
Posts: 731
Likes: 3
Default

There is a specified air-gap for the clearance......................I am not sure what the spec for the XJ is, but it should have been included in the kit for the clutch..........................It probably could be looked up in a service manual.............

If it's too close, it rubs when not engaged......................If it's too far, then it won't engage properly, and you'll get slippage and burn up your clutch.....

Sometimes there are little spacer washers included in the kit. They go on the shaft before the clutch shoe......................Sometimes you just press the shoe on far enough for the proper air-gap, and put the lock nut on.

edit: I just looked it up on Identifix for a 1998....................


Last edited by Firehawk068; Jan 5, 2015 at 07:38 AM.
Reply
Old Jan 5, 2015 | 07:47 AM
  #3  
Firehawk068's Avatar
Senior Member
 
Joined: Jul 2011
Posts: 731
Likes: 3
Default

it also states a break-in procedure for a new clutch...................

CLUTCH BREAK-IN
After a new compressor clutch has been installed, cycle the compressor clutch approximately twenty times (five seconds on, then five seconds off) During this procedure, set the heater-A/C control to the Recirculation Mode, the blower motor switch in the highest speed position, and the engine speed at 1500 to 2000 rpm. This procedure (burnishing) will seat the opposing friction surfaces and provide a higher compressor clutch torque capability.
Reply
Old Jan 5, 2015 | 10:53 AM
  #4  
SeniorXJ's Avatar
Thread Starter
Senior Member
15 Year Member
Liked
 
Joined: Apr 2009
Posts: 819
Likes: 7
From: VA
Year: 1998
Model: Cherokee (XJ)
Engine: 4.0
Default

Originally Posted by Firehawk068
it also states a break-in procedure for a new clutch...................

CLUTCH BREAK-IN
After a new compressor clutch has been installed, cycle the compressor clutch approximately twenty times (five seconds on, then five seconds off) During this procedure, set the heater-A/C control to the Recirculation Mode, the blower motor switch in the highest speed position, and the engine speed at 1500 to 2000 rpm. This procedure (burnishing) will seat the opposing friction surfaces and provide a higher compressor clutch torque capability.

I put the old clutch back on...


There were spacers on the outside of the old clutch which seemed more like washers. However, they did fit directly on the inside of the clutch & I used one so far. I'll buy a feeler gauge, then add another, then check the specs...
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Aryl
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
12
May 5, 2024 10:29 PM
Zeke P. Lucas
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
8
Aug 30, 2015 05:42 PM
AKghandi
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
7
Aug 28, 2015 02:09 PM
NM-XJ
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
7
Aug 25, 2015 04:58 AM

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 



All times are GMT -5. The time now is 03:14 AM.