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Unread 04-27-2006, 08:00 PM   #1
medunwoody
Registered User
1985 CJ7 
 
Join Date: Nov 2005
Location: Columbia MO
Posts: 51
Clutch Problems

We just got done replacing the clutch on our 79 CJ7. We ended up replacing the pressure plate, pilot bearing, and throwout bearing. When we got it all back together, it worked fine for about a week until the throwout bearing started chirping. When you push in the clutch, there is a noticeable chirp from the bearing. Also, as you release the clutch pedal while the engine is running, the pedal catches and feels almost as if i won't engage fully. However, when the engine is off, it is very smooth without any problems. Does anyone have any idea what this could possibly be?

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1985 CJ-7 with 4bt Cummins Turbo Diesel, nv4500, dana 300, 4.56 gears in stock axle housings just waiting to blow up with the extra power!
Medunwoody@aol.com
Columbia, MO
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Unread 04-27-2006, 09:08 PM   #2
mr_frenchy
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Join Date: Dec 2005
Location: Calgary, Alberta
Posts: 63
Which transmission? is it stock tranny?

Found this Service bulletin a while ago, might help....


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LB133 - Critical Release Bearing/Fork Match

Release bearing/fork combinations differ among models, and the parts are not interchangeable. The wrong combination will result in chatter and hard pedal when the fork contacts the bearing retainer. Following is a description of how to identify the two types.

Models through 1979 used a fork with two small pin-type locators at the bearing end. The locators fit into holes drilled in the release bearing plate under the clips. When installing the release bearing, ensure the locators fit all the way inside the holes in the release bearing plate.

After 1979 the fork had no locator pins. Instead it was centered by a release bearing collar that extended beyond the back of the bearing between the bearing retainer clips. When replacing the fork, ensure it is wide enough to pass freely over the centering collar.

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'75 CJ5, SOA, 36" buckshots, Warn 9000i upfront, 304 V8

In the Bible some where it says that if you sell your Jeep to buy a honda, you'll go to hell. It's somewhere in the back, near the maps.
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Unread 04-28-2006, 04:59 PM   #3
medunwoody
Registered User
1985 CJ7 
 
Join Date: Nov 2005
Location: Columbia MO
Posts: 51
Clutch Problem

The transmission is a T-150. The engine is the 258. The transmission is stock but the jeep originally had a 304 in it but was switched out with a '79 258. The throwout bearing that we put in looks identical to the one we took out. There weren't any problems until we put in the new clutch.
__________________
1985 CJ-7 with 4bt Cummins Turbo Diesel, nv4500, dana 300, 4.56 gears in stock axle housings just waiting to blow up with the extra power!
Medunwoody@aol.com
Columbia, MO
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