I need advice from some one about a J clutch Prob - Jeep Wrangler Forum

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Old 02-14-2012, 06:16 PM
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I need advice from some one about a J clutch Prob

I recently bought a 91 YJ with a 4 cyl and 5 spd. The guy I bought it from said he just had a shop replace the clutch plate, pressure plate, and both master and slave cylinder. He had only driven it a couple of times and the clutch was slipping again. I bought it anyway. I pulled all the parts to inspect them and all seemed ok except the flywheel has a little ware and had a glaze. I had a machine shop true and resurface the flywheel. Put it all back together and it felt like new. I pulled strong and hard, no slipping at all. Heres the hairy but..... after a few rides in it all of a sudden I noticed a little slipping, within a mile it went from like new to not even trying to nudge the vehicle. If anybody has an idea what the problem could be...Please Please let me know. I realy want to move on to more fun stuff with the Jeep.
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Old 02-14-2012, 06:24 PM   #2
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Oil leak somewhere north of the bell housing seam?

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Old 02-14-2012, 09:30 PM   #3
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slave cylinder leaking?
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Old 02-15-2012, 07:41 AM   #4
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Crack the bleeder with the pedal up and see if there's pressure in the line. If there is, either the master is bad, or it may need to be shimmed away from the firewall enough to give a little free-play at the top of the pedal travel. There is a valve in the master cylinder that opens when the pedal is all the way up that releases excess fluid back into the reservoir as the clutch wears.
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