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Old 02-04-2012, 03:40 PM   #1
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New clutch,Won't shift now what

I just installed a new LUK clutch, My old clutch was slipping a little, So I got it all back together. And now it will not shift into any gear while it is running. I can shift when jeep is off. I pulled out my slave cylinder (external)95yj and I had my Buddy work the peddle while I held the piston. The piston pushed HARD for about an inch and then stopped. If he pumped the peddle the piston would come out about 3 1/2". I also got several drops of fluid,So I installed a new slave cylinder and bled the air out. Still won't shift. I replaced Throw out bearing,pilot bearing.disk and pressure plate. I also removed fly wheel and did some lite hand sanding. No extra parts.

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Old 02-04-2012, 04:04 PM   #2
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If all of the air has been bled out of the system, the master cylinder may be bad. I had one that would barely disengage the clutch.

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Old 02-04-2012, 04:09 PM   #3
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I had no known problems before the new clutch, Could the new clutch cause the master cylinder to fail?
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Old 02-05-2012, 08:57 AM   #4
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If you put in some kind of real heavy duty springs in the presser plate the old may now push it in, on a standard clutch all should be fine.
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Old 02-05-2012, 09:22 AM   #5
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I installed a LUK standard clutch kit, Pilot bearing,throw out bearing, disk and pressure plate. And after it didn't shift a new slave cylinder.
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Old 02-05-2012, 09:46 AM   #6
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The clutch disc could be stuck on the splines, did you check for a smooth fit, and lube the splines?

Do you feel any resistance when you push the pedal, or is it "free" ?
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Old 02-05-2012, 10:04 AM   #7
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No I did not lube the splines, I didn't want any grease getting on the disk. Should I have lubed the splines? The only place I put any Never Seize was where the pilot bearing sits because the old bearing was seized in there and sucked to remove.
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Old 02-05-2012, 10:23 AM   #8
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Yeah, you need to lube the splines (just a little bit though!), otherwise the disc can't "float" freely and move away from the flywheel when the pressure plate is released.

But before you pull it back out. Make sure that the slave cyl is actually pushing on the release fork and t.o. brg.
Does the pedal have the same feeling (resistance) as it did with the old clutch? Or does it go to the floor super easy?
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Old 02-05-2012, 10:31 AM   #9
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Don't pull it apart to lube the splines, but work on bleeding it. Get a clean, clear container like a water bottle and fill 1/2 way with brake fluid. Get some vacuum hose that fits on the slave bleeder, open the bleeder and make sure the hose is submerged in brake fluid. Make sure the master is full, then have someone SLOWLY pump the clutch pedal, while you watch the air bubbles blow into the container. Pump until the bubbles stop, close the bleeder then pull the hose out of the bottle. This may take ten minutes or so to get all the air out.
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Old 02-05-2012, 10:46 AM   #10
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I agree, you still have air in system. sometimes i have had to sit in the seat and work the clutch pedal for an hour. Your leg will feel like its going to fall off but it has to be done.
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Old 02-05-2012, 10:50 AM   #11
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Thank you for the reply's. I guess I will have to wait until my Buddy comes over. I will have to hold the hose to the slave cylinder. It is just a small hole on the side of the bleeder tower.Boy I sure hope it is as simple as air in the line. It was A BITCH to replace the clutch. fought me every step of the way, and I have done them before. I guess it's just not an easy job to bleed yourself. I will post what it ends up being, maybe it will help someone else when they have this problem. Thanks
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Old 02-09-2012, 05:53 PM   #12
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Well the clutch now works. After bleeding and bleeding (the slave cyl not me, well me a little) without success, I brought it to my mechanic. Turns out the clutch was installed correctly BUT. The PO replaced clutch before me and must have used lock tite on the bolts that hold the pressure plate not lock washers. So when I installed clutch I did not have lock washers or use loc-tite. And the bolts backed out a little allowing pressure plate to move and not disengage the clutch. Hopefully this post will help save someone else the frustration that I went through. Thank you to all of you who replied.

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