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hueyjazz · Joined: 27 May 2008 Posts: 3 Location: Rochester, NY

I've got a 1982 Weissach 924 that I store winters. I parked it for the season with no issues. When I go to start it up I find I can't get the clutch to disengage. I haven't had any issues with slippage or any bearing noises. Transmission has always been solid.

This is a mechanical fork with the wire, not hydraulic. I taken off the access port on the bell housing and the fork appears to move the throw out bearing fine. What would cause this? I've got 80k on this clutch so I ready to replace everything as well as the pilot bearing.
With the engine off I can shift from gear to gear but when the engine is running, going toward a gear causes grinding.

I would expect if the pilot or throw out bearing locked I would still be able to make it to a gear.
I'm a little glad this didn't happen while driving.
Any suggestions? I would hate to do a clutch job just to find out I missed the real cause.

Smoothie · Posted: Tue May 27, 2008 12:14 pm Post subject:

I had this happen a couple times while redoing my cars' bodywork and paint a couple years ago. Apparently the disk can get rusted to the flywheel when the car is left sitting for a while (even a relatively short time, like a few weeks to a couple months in my case). ..Trying to remember how I broke it free - I think I had the e-brake engaged + right foot on the brakes, left foot depressing the clutch pedal, and engaged the starter in short hits until it broke free. -Pretty sure that's how I did it. Obviously make sure you have some room fore and aft the vehicle, and no peeps or pets roaming around..
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"..it's made in Germany. You know the Germans always make good stuff."

'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox

Ozzie · Posted: Tue May 27, 2008 12:15 pm Post subject:

This can happen if the car hasnt been started foa a while.
The only method I have without stipping down the car is to engage gear, handbrake on and foot on brake and clutch. Start car.
You will hear a bang as the clutch lets go of the flywheel.
Should then work as normal.
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Paul · Posted: Tue May 27, 2008 12:19 pm Post subject:

Agreed but do it outside with plently of room in front of the car.
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D Hook · Joined: 02 Nov 2002 Posts: 3158 Location: Omaha, NE

Smoothie · Posted: Tue May 27, 2008 11:54 pm Post subject:

I think I left out an important detail, but Ozzie mentioned it. That is to have a gear selected beforehand. Put it in reverse if there's more room behind, or a forward gear if there's more room in front.
_________________
"..it's made in Germany. You know the Germans always make good stuff."

'82 924T, US version, dark green metallic, 5 speed Audi 016G gearbox

Eturbo924 · Joined: 09 Nov 2002 Posts: 2212 Location: Londonderry NH

Yup typical.

Had the same problem years ago.

Put in gear... foot firmly on brake and start her up. Just as others have said. If you are really worried... chock the wheels.

Eric
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Nobbi · Joined: 24 Aug 2006 Posts: 1398 Location: Germany

Put in 3 rd gear and start, works most of the times.

BTW, my porsche parts man told me that the pilot bearing is not longer available !!?? PN 047105313, the seal ring pn:047105311 is still good.
Then i got a PN 047105169( A )for a set of both parts from the Porsche Classic Part service in Stuttgart.Did someone orderd that PN ????

Thanks!

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NA 924 - april/1977- 4-speed-audi gearbox.
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hueyjazz · Joined: 27 May 2008 Posts: 3 Location: Rochester, NY

It worked!!!
Thank you all
The flywheel rusting to the clutch wasn't something I even considered.
Makes sense
The five minutes it took to get it working beats the hours I spent trying to figure it out.

Now some simple brakes and exhaust work and I'm set.
I bought all the parts to do the clutch but I wasn't looking forward to it.
Thanks again

Vince Ponz · Joined: 02 Nov 2002 Posts: 3581 Location: Florida

If I think I will not be using my car for a long while I never put on the hand brake. Sometimes this will stick too.
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macBdog · Posted: Thu May 29, 2008 1:34 pm Post subject:

5th gear works the best for me in this case.
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