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1967 Jeep Gladiator J-3000 Clutch Problems

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kopeck

12-26-2016 05:52:17




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I'm helping a friend install a new clutch in his Jeep J-3000 with an AMC 232 but the darn thing wont release. We've had the engine in and out 3 times now and I can't quite figure out what the deal is.

I can't get the thing to release with the correct free play, zero free play and the throw out bearing preloaded. The other issue we found is before we started all the adjustment linkages were maxed out. I had to make a new throw out arm so I made it longer thinking it was broken at one time, now I'm not so sure.

We did have the flywheel turned and we're using a new pressure plate and friction disk. On the bench both the friction disk and the pressure plate are identical.

The one observation we made was it looks like the fingers are set back quite a ways when the plate is bolted down:



The other thing that seems odd is the throw out fork needs to be moved a good inch and a half before the throw out bearing touched the fingers. That seems like a lot to me.

We found some talk about different sized throw out bearings, shimmed pressure plates but nothing that specific to the J series and no one talks specs, just sort of matter the fact conversation. The service manual doesn't mention any of that. It's really like the throw out bearing is to short or the fingers are to far away...

I'm at a loss this should be simple. I've done clutches before. We're getting tired of pulling the engine. Any ideas?

Thanks,

K

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kopeck

02-03-2017 10:39:27




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 Re: 1967 Jeep Gladiator J-3000 Clutch Problems in reply to kopeck, 12-26-2016 05:52:17  
Here, I found a pictures where you can see where the fingers rub on the springs:



I should also note that the peddle free play is set buy the book.

K



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kopeck

02-03-2017 10:33:16




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 Re: 1967 Jeep Gladiator J-3000 Clutch Problems in reply to kopeck, 12-26-2016 05:52:17  
Quoting Removed, click Modern View to see

I'm so sorry, I never got an email notification that you guys responded!

To answer the questions:

The disk is in the right way.

The pilot bushing is the original, it's not hanging up.

Here's an update:

I'm 99% sure the the issue is the fingers are running into the cushion springs on the disk. I'm still curious why the fingers set so far into the pressure plate. There's less then 1/4" between the back of the finger and the springs. You can see where the two have been rubbing.



But the other thing is the center section on the friction disk is significantly taller then the original, it's over 1/8". It's pretty obvious:



I still feel like the fingers are low for some reason but combine that with the friction disk center being taller and there for closer to the fingers isn't helping.

They make shim kits for pressure plates and I swear I read someone talk about shimming a Jeep plate but it was on a newer model. Of course that means less pressure on the disk...

Thanks,

K

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Longknife

01-31-2017 07:27:44




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 Re: 1967 Jeep Gladiator J-3000 Clutch Problems in reply to kopeck, 12-26-2016 05:52:17  
Guess we will NEVER know!!!!!!!!!!!



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old

12-28-2016 21:09:12




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 Re: 1967 Jeep Gladiator J-3000 Clutch Problems in reply to kopeck, 12-26-2016 05:52:17  
With out seeing the disk form both sides I will have to agree with the other guy and you have the flywheel side towards the pressure plate and if you have it that way it will NEVER release. I learned that the hard way years ago on a 1972 GMC pickup. Many new clutch disk will even have right on them the words flywheel side



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cole in mo.

12-28-2016 16:25:12




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 Re: 1967 Jeep Gladiator J-3000 Clutch Problems in reply to kopeck, 12-26-2016 05:52:17  
One question, how tight does the input shaft fit in the pilot bearing?



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Longknife

12-26-2016 13:59:21




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 Re: 1967 Jeep Gladiator J-3000 Clutch Problems in reply to kopeck, 12-26-2016 05:52:17  
The disc looks right to me, as the riveted on plate that secures the springs can be seen. Another problem MAY be that arm that you lengthened,,,, it will have to travel MORE to release the clutch,,, also you only need enough T/O brng clearance to keep the bearing from spinning when pedal is UP....



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willie in mn

12-26-2016 12:55:17




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 Re: 1967 Jeep Gladiator J-3000 Clutch Problems in reply to kopeck, 12-26-2016 05:52:17  
Unless I am looking at the photo wrong, the disc is in backwards. Long snout of the hub should be toward the pressure plate, short end against flywheel.

Willie



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