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93 clutch removal problems!

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Old Dec 29, 2015 | 08:31 AM
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Default 93 clutch removal problems!

The problem I'm having is I've got the six speed transmission out,the bell housings all loose but I can't pull it away because the clutch fork is stopping me. I realize it's got the clutch fork lock which I got off but the one that releases the clutch fork looks like the Allen is rounded out a bit. tried I think it's a 12 mm and it was just a little too sloppy in there and I realize you have to loosen it turning clockwise.
The 1/2 would not go in.
I was told if you pulled away from the alignment studs and turn the bell housing you can get it loose that way but the fork stops me from doing that.
Any ideas? Thanks Herb
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Old Dec 29, 2015 | 08:52 AM
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tap a torques bit in it then use a socket and a ratchet.

Last edited by antfarmer2; Dec 29, 2015 at 09:04 AM.
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Old Dec 29, 2015 | 10:02 AM
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Originally Posted by Herb
The problem I'm having is I've got the six speed transmission out,the bell housings all loose but I can't pull it away because the clutch fork is stopping me. I realize it's got the clutch fork lock which I got off but the one that releases the clutch fork looks like the Allen is rounded out a bit. tried I think it's a 12 mm and it was just a little too sloppy in there and I realize you have to loosen it turning clockwise.
The 1/2 would not go in.
I was told if you pulled away from the alignment studs and turn the bell housing you can get it loose that way but the fork stops me from doing that.
Any ideas? Thanks Herb
It seems you've done everything correct thus far and I wouldn't drive anything into it.

The release bearing needs to be rotated so that the fork will pull/pry towards the left of car to remove when "the flats" are aligned. It's been many years but that's best I recall and the FSM mentions it also.

Check the flats on this release bearing:

http://www.jerrysgaskets.com/bearing...gm-90-93-16c3/

** changed push to pull/pry Possible without loosening the stud? Maybe.

Last edited by WVZR-1; Dec 29, 2015 at 02:12 PM.
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Old Dec 29, 2015 | 04:27 PM
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$225.00 for a throw out bearing???
It,s probably been about 30 years since I changed a clutch but I gotta say it again.
$225.00 for a throw out bearing!
I think I'll put a power glide in it!��
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Old Dec 29, 2015 | 08:49 PM
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If you are looking for NOS LUK dual mass flywheels, NOS Valeo clutches, NOS INA throwout bearings they are very expensive if you can find them. They are about the best, but pricey.

Check Rock Auto for LUK clutch kit that includes pressure plate, disc, and throwout bearing for less than the $225 for an NOS throwout bearing.

Good luck.
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Old Dec 29, 2015 | 11:37 PM
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Never could get the bell housing off so with a two by four I persuaded the engine
Out with the bell housing attached. Whew !!
For some reason we were able to turn the bell housing after the engine was out.
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Old Dec 30, 2015 | 05:37 PM
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Originally Posted by QCVette
If you are looking for NOS LUK dual mass flywheels, NOS Valeo clutches, NOS INA throwout bearings they are very expensive if you can find them. They are about the best, but pricey.

Check Rock Auto for LUK clutch kit that includes pressure plate, disc, and throwout bearing for less than the $225 for an NOS throwout bearing.

Good luck.
i cant help you with the bearing, but i do have a NOS valeo pressure plate (a spare) that id be willing to give away at $175+ shipping
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Old Dec 30, 2015 | 07:15 PM
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Originally Posted by dizwiz24
i cant help you with the bearing, but i do have a NOS valeo pressure plate (a spare) that id be willing to give away at $175+ shipping
I appreciate that but that's what I have.
I believe I'm just going to change the clutch plate as it's a little worn
And was slipping in 5th.
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Old Dec 31, 2015 | 12:24 AM
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I used a LUK kit in a 92 I did this Summer. The trans would NOT go back in. I fought it for 2 hours, then decided the bell housing had to come back off. I had the same problems the OP did, the fork adjuster was stripped. My neighbor brought home a 12MM from his shop and I got the fork loose, and the bell housing off.

The I.D. of the throwout bearing was .040 smaller than the sleeve on the transmission. No wonder the trans wouldn't go back in. I used my brake cyl hone to enlarge the hole in the T-O bearing. Took about an hour to move .040 with the hone. Trans went right in the next attempt.

Check the T-O bearing on the nose of the trans BEFORE you install the bell housing.

Because I didn't, I got set back about 6 hours. Check it.
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Old Dec 31, 2015 | 09:20 AM
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You probably had the wrong throwout bearing.

The '89-'94 black tag ZF transmissions had a larger sleeve around the input shaft than the '95-'96 blue tag ZF's did.

The '95-'96 throwout bearings had a plastic reducer to make the ID smaller to fit the blue tags.

It sounds like you got the '95-'96 throwout bearing and needed the '89-'94 version.
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Old Dec 31, 2015 | 10:00 AM
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Originally Posted by QCVette
You probably had the wrong throwout bearing.

The '89-'94 black tag ZF transmissions had a larger sleeve around the input shaft than the '95-'96 blue tag ZF's did.

The '95-'96 throwout bearings had a plastic reducer to make the ID smaller to fit the blue tags.

It sounds like you got the '95-'96 throwout bearing and needed the '89-'94 version.
That's where it gets confusing. I believe if you actually check the release bearing is through '93 and then '94+. Through the years there's been so much misinformation posted that many assume things that actually aren't so.

I've known a fellow to argue that his '94 was a "blue tag" for years and ended up quite embarrassed when shown on a lift that it was a "black tag" and the build number validated it as being original.

If you're removing a clutch you verify by dimensions before assembling what was supplied, if you're ordering then you verify by using the tag information off of the transmission and then verifying of course before the install.

Here's an SPO insert for C4 release bearings:

Name:  C4 release bearings.png
Views: 387
Size:  34.3 KB
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Old Dec 31, 2015 | 10:41 AM
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Originally Posted by WVZR-1
.......I believe if you actually check the release bearing is through '93 and then '94+........
I agree. I double checked and I stated it wrong. '94 was the first year of the smaller throwout bearing ID.



I had a '94 that I was confused on the black tag vs blue tag. It had a black tag in the normal position, but it also had a blue tag right below it. I think it may have been a ZF rebuilt transmission, so I don't really know what was changed.
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