924Board.org

bob · Posted: Fri Oct 28, 2005 8:16 pm Post subject: clutch play....how to adjust???

Hi,
last time i've changed my clutch. But now, i've got a problem with the clutch play adjsuting. I know that the hydraulic clutch can't be adjusted, but when the turbo blow (at least 3000 rpm), the clutch run over.... where is the problem?
In normal use, i can drive with it, but the problem is present at an accélération after 3000 rpm.
thanks fot your help.

Smoothie · Posted: Sat Oct 29, 2005 12:48 am Post subject:

The hydraulic clutch is self-adjusting, but there is an adjustment at the pedal (to be sure the piston in the master cylinder retracts fully when the pedal is released). You should have 0.5mm freeplay at top where the pedal rod contacts the master cylinder - and 3.0mm freeplay down at the pedal pad. To adjust, there's a nut on the rod that needs to be loosened, then you'd turn the rod in or out to adjust, then tighten the nut again.

Of course it's possible that the clutch is fine and what you're feeling is actually something like a loss of power due to some other problem, but you might as well check the clutch pedal adjustment first.
_________________
"..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

bob · Posted: Sat Oct 29, 2005 4:43 am Post subject:

OK smoothie, thanks for your help.
this afternoon, i've turned the nut to adjust it. I 'll test it this sunday: we have a meeting with the 911 club of tourcoing...
thank's

bob · Posted: Sun Oct 30, 2005 3:54 am Post subject:

Well, after tryed to adjust the clutch play, i think my clutch wrecked...

i had changed it , it was a second-hand buy, but it looked like ok: good thickness, good springs etc, perhaps the diaphragm spring....

for the time, i will drive with it. i can drive, but i can't speed up violently, 'cause the engine roll over

it's time to save money...

Smoothie · Posted: Sun Oct 30, 2005 4:21 am Post subject:

If you need to replace the clutch disc again, you can save money by getting one for a Ford Bronco II. They're the same size at 8-7/8", 1"x 23 spline hole. Look here - http://www.924board.org/viewtopic.php?t=10723&start=0
_________________
"..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

bob · Posted: Sun Oct 30, 2005 7:19 am Post subject:

so surprised

........ so happy

many thanks smoothie, for your advice

bob · Posted: Sun Feb 05, 2006 6:26 pm Post subject:

Well, now i'm searching for clutch dealer....not in France

how can i do ?
where can i find the ford bronco II 86' clutch for my 931 ?

Someone got an idea?
thanks
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yesus a ne fo mvoé djam

bob · Posted: Thu Mar 02, 2006 2:11 am Post subject:

anyone for an idea? please help me ...

many thanks

_________________
yesus a ne fo mvoé djam

Smoothie · Posted: Thu Mar 02, 2006 3:52 am Post subject:

I don't know where you would find it in France. Here are some US suppliers -

http://www.autozone.com/servlet/UiBroker?UseCase=C001&UserAction=performSearch&Parameters=Auto+Store%7C%7EREGULAR+PARTS+LOOK+UP%7C%7ECLUTCH+DISC

http://www.partsamerica.com/ProductDetail.aspx?mfrcode=PHT&mfrpartnumber=RCF48801&parttype=242&ptset=A

http://www.napaonline.com/masterpages/NOLMaster.aspx?PageId=470&LineCode=NCL&PartNumber=RCF48801&Description=Clutch+Disc+-+Remfd

http://www.napaonline.com/masterpages/NOLMaster.aspx?PageId=470&LineCode=NCL&PartNumber=RCF1041&Description=Clutch+Disc+-+Remfd
_________________
"..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

dpw928 · Joined: 02 Nov 2002 Posts: 1860 Location: owasso, ok 74055

Smoothie,

In 1991 Porsche changed the pedal adjustment specs on the 928 from .5mm freeplay to 1 complete rotation to preload. Since the 931 and 928 use common clutch release components, I wonder if this change should apply here. Was Porsche still publishing changes to the 924/931 workshop manual in 91?

Dennis
_________________
81 931 5 sp
78 928 5 sp Silver
78 928 AT Euro Black

Smoothie · Posted: Fri Mar 03, 2006 6:18 am Post subject:

dpw928 · Joined: 02 Nov 2002 Posts: 1860 Location: owasso, ok 74055

Smoothie,

Not sure why it was changed but readjusting the pedal on my 78 took away all the gear grinding. It's possibly they changed to composition of the blue hose which allowed more expansion.

Dennis
_________________
81 931 5 sp
78 928 5 sp Silver
78 928 AT Euro Black