964 - No Clutch Pedal
#1
Racer
Thread Starter
964 - No Clutch Pedal
Greetings,
I'm in need of your assistance. Today I was getting my 964 ready for Auto X tomorrow morning and in the process I had the rear of the car jacked up to access my exhaust system. After finishing my preparation (tires, tightening of exhaust bolts, etc.) and bringing the car down off jack stands, I noticed the clutch pedal dropped inside the car by almost 6" (almost to the floor board) and now I have a clutch issue. I have a relatively new clutch (6,000 miles) so it's not a bad clutch issue and I never had any issues prior to jacking up the rear of the car. I have no idea where to even start looking into this issue. Please comment and I appreciate all responses and thoughts....
Coincidence, or what is happening, or has happened?
I'm in need of your assistance. Today I was getting my 964 ready for Auto X tomorrow morning and in the process I had the rear of the car jacked up to access my exhaust system. After finishing my preparation (tires, tightening of exhaust bolts, etc.) and bringing the car down off jack stands, I noticed the clutch pedal dropped inside the car by almost 6" (almost to the floor board) and now I have a clutch issue. I have a relatively new clutch (6,000 miles) so it's not a bad clutch issue and I never had any issues prior to jacking up the rear of the car. I have no idea where to even start looking into this issue. Please comment and I appreciate all responses and thoughts....
Coincidence, or what is happening, or has happened?
#3
Pro
Join Date: May 2009
Location: Raeford, North Carolina
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Did you use the frame jack point or did you use either the engine case or the transmission to jack it up? if you used the trans, perhaps you accidentally nocked a fluid line or something......a very weird problem.
#5
Racer
Thread Starter
Thanks for the response. The reason for bleeding (per my understanding) would be because of air in the system. How would that have happened as I never pulled anything related at all? It's now after 7pm on the West Coast and I cannot get any fluid right now, so that will have to wait until tomorrow. I'll respond to you after I've finished bleeding the system.
#6
Racer
Thread Starter
Now I do have a clutch but it's only a 3" travel and the pedal now sits 6" below the brake pedal...
#7
Racer
Thread Starter
I'm going back to the garage to do exactly that and I'll respond after. Now regarding the 'roll pin' i have no idea what your talking about, so please elaborate further. Sorry for my lack of knowledge regarding 'roll pin' or terminology.
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#8
Racer
Thread Starter
Then I did exactly what you asked and grabbed the pedal and moved it up and down and it immediately came back to the original height and I now have full clutch travel again. WTF just happened? Excuse my profanity but it does not make any sense at all. I have clutch again, with full travel. I am happy for that but would love an explanation as to the why's so I can either prevent it from happening again or just for knowledge....
Thanks for the responses and as always, 'Rennlist' to the rescue...
#9
Nordschleife Master
The clutch master cylinder might not have the best of piston seals .
If the seal leaks maybe the pedal drops ?
Or may be the roll pin has gone funny ?
Clutch Pedal Roll Pin Failure (or, the clutch ain't dead yet!)
https://rennlist.com/forums/964-foru...-dead-yet.html
If the seal leaks maybe the pedal drops ?
Or may be the roll pin has gone funny ?
Clutch Pedal Roll Pin Failure (or, the clutch ain't dead yet!)
https://rennlist.com/forums/964-foru...-dead-yet.html
#10
Racer
Thread Starter
I can agree the that theory but does piston seals just go all of a sudden without any warning? Or, is this the warning and it was just a coincidence with jacking up the car?
#11
Nordschleife Master
Sorry .
Things go bad without any warning sometimes .
If I had a buck for every time someone has said , "It was just working !"
Now what you want to do is find what part is being funny .
#12
Racer
Thread Starter
The clutch master cylinder might not have the best of piston seals .
If the seal leaks maybe the pedal drops ?
Or may be the roll pin has gone funny ?
Clutch Pedal Roll Pin Failure (or, the clutch ain't dead yet!)
https://rennlist.com/forums/964-foru...-dead-yet.html
If the seal leaks maybe the pedal drops ?
Or may be the roll pin has gone funny ?
Clutch Pedal Roll Pin Failure (or, the clutch ain't dead yet!)
https://rennlist.com/forums/964-foru...-dead-yet.html
#13
Nordschleife Master
Do please have a look see .
But if the symptom comes back again , I think you are looking at a clutch master cylinder replacement .
You didn't find any brake fluid on the ground under the clutch slave did you ?
But if the symptom comes back again , I think you are looking at a clutch master cylinder replacement .
You didn't find any brake fluid on the ground under the clutch slave did you ?
#14
Racer
Thread Starter
No there was no brake fluid present anywhere. The clutch master cylinder will also be investigated per your advice. I appreciate your input always...
#15
The down side to the roll pin inspection is you have to pull the pedal assembly out. Not that it's all that hard just takes some time. The clutch pedal arm slides on to a shaft in the assembly. The roll pin locks the pedal arm to the shaft. Perhaps if you pull the wooden cover and push down on the pedal and watch for the relative motion between the two you can see if this could be the problem.