RallyJon

Just checking. Clutch pedal has been getting increasingly crunchy and started to hang for the first time in holiday stop and go traffic.

I can keep driving for a few days while I order parts, right? My last clutch failure was a stripped plastic piece on my '71 that resulted in a flat bed ride.

Caveman

A few days, try a few years! I don't know about the crunchy bit (which does not sound good) but for the hanging bit you'll soon get in the habit of lifting the pedal the last inch with your foot. If it's just the hanging clutch an you can live with it you should be OK for quite a while.

Cheers,

David

alpinadvl

Had the same thing happen one day, but not since..... anyway, there is a DIY from Robin's site www.p-car.com you should check it out.

Here is the link for the Hanging Clutch DIY


hope that helps.

viperbob

These generally do not end in catastrophic failures as fast as the '71 (old cable clutch vs 993 hydraulics). I would get it fixed as soon as you can though (other stuff could be happening that you really do not want to know about...)..

RallyJon

Will that "other stuff" be fixed with a fluid flush and/or kinematic lever update? Or should I do the slave cylinder too?

Caveman

Hi Alf,

I did and I posted my very positive impressions a few weeks back... ;-)

Cheers,

David

viperbob

It depends what is wrong with the system. The slaves are prone to failure. Also if you have a '95, then the kinematic lever is not a bad thing to change. With a 10+ year old car it is not a bad idea to change the slave if you are having issues. Flushing alone may cause other problems (wash away the gunk that is actually sealing on the piston seals). If you do flush and find you need a slave, you could be out of commission waiting for the parts. And they are relatively cheap...

RallyJon

Makes sense to get all the possible parts in advance I guess...

OK, looking at the parts manual, it seem that the kinematic lever has been superceded three times, from 993.423.519.00 to 993.423.519.01 to 993.423.519.02 to 993.423.519.03. But it says "97-" for the 03.

Has anyone replaced the hose as suggested by Robin's site? Looks like the part is 964.423.477.00 and it's pretty expensive for a hose.

Finally, once the pedal cluster is apart, I could replace the bushings. Are these bushings likely to be worn? Part numbers are:
999.924.094.00 x2 (brake pedal)
999.924.081.00 x2 (clutch pedal)
964.423.543.01 clutch spring tension adjuster thing

BS911

FWIW - and at the risk of sounding like a completely lazy basterd - I have gone from about 75000 miles when I noticed my clutch hanging up - to my current 160000 - and have not had any additional problems. This whole time I've been hoping it wears out my clutch so I can justify a LWF/Clutch setup - but no luck to date.

TheOtherEric

Jon-
I think you'll find that replacing the clutch lever isn't as bad as the DIY makes it sound. You don't need special tools or anything. Takes about 3 hours I suppose.

RallyJon

Did you replace any of the bushings or were they in good condition?

GG Allin

Does anyone know if this fix applies to 964's? I have the same problem.

TheOtherEric

I didn't completely disassemble it so as to inspect the bushings. I don't have any reason to think the bushings might be worn (or that worn bushings would even matter) so I took the "don't fix it if it ain't broke" approach.

chris walrod

A month or so ago, I updated the kinematic lever on my late-95 car. While I was there, I replaced all of the bushings since I ordered them prior not knowing their condition.

Truth be told, with 99K on the car, and driven in the bay area all of its life, the bushings looked great! Looking back, I wouldnt replace them again.

I would, however, take everything apart to clean and grease all bearing surfaces.

JasonAndreas

The 964 has a rollpin (Porsche part no. #N.023.351.1) on the clutch pedal shaft that has been known to fail but no kinematic lever.

Does it matter if the tranny/engine is warm or cold? More likely you have a failing clutch slave cylinder, air in the hydrualic line or (least likely) your release bearing is catching on the guide tube.