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post #1 of (permalink) Old 04-16-2012, 05:06 PM Thread Starter
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clutch trouble stock 83 cj7

Background- the jeep shuttered badly when starting (from a stop) in 1st and rev.

When I replaced the engine I also replaced the all of the internal clutch component and resurfaced the flywheel. With the new engine and clutch in I immediately could tell that the shuttering was just as it was before.

I could also tell that the clutch was not disengaging, before and after. 1, when stopped, it was difficult to get into 1st and the jeep would inch forward once in (with the peddle DOWN). 2, The clutch fork "push rod" (???) ran out of threads before touching the fork (I fabbed a longer one temporarily...still no disengage).

With the trans now out I can see what is happening but don't understand. Two different bellhousings and two different forks (both with pivot ball in place) and the same problem...there is a large gap between the throw out and the (three) fingers. The throw out contacts the fingers about the same time the fork contacts the aft edge of the opening in the bellhousing. With the fork forward where I think it should be there is about an inch gap between the throw out and fingers.

The old clutch was a diaphragm and the new clutch has three (3) fingers but BOTH THROW OUTS ARE EXACTLY THE SAME.

I do feel that with the clutch never disengaging, the dampening devices in the disc are unable to perform. That's just my guess.

I am nearly certain that all of these parts are stock. I don't understand. Do I need a longer throw out? The two that I have measure just over one (1) inch from the back of the plate to the thrust surface. After several days of surfing it appears that I am the only person to encounter this.
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post #2 of (permalink) Old 04-17-2012, 07:22 AM
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It seems obvious that at least one of the parts isn't the right one for the rest of the assembly. That could be the bell housing, clutch, throwout bearing, fork or pivot ball stud. Rather than trying to figure out which, I'd just try to fix what you have. Can you just shim the pivot ball out some? That's where I'd start. One thing to check, though, on one of my old Volvos the fork wore so much that the ball eventually just pushed through it. I don't think that wear could account for as much slack as you apparently have, but . . . .

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post #3 of (permalink) Old 04-18-2012, 04:57 PM Thread Starter
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I've read several places that a three finger clutch cover requires a longer throw out. I don't know where to get this longer bearing. None of the parts places know this or show a longer bearing.

I want to know why stock parts are not working so I can fix it right without rigging things. I've got one of those jeeps too.
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