clutch Adjustment Question

Hugh R · 12-29-2007, 12:39 PM

Yes, I did a search, but didn't find the answer. 101 Projects say adjust the stop to 1.2mm and then hook the cable back up and adjust the gap to 1.0mm. Fine, I do that and the Omega spring is up against the heat exchanger. I push on the clutch and get under and the spring has "cammed" over to a different position with no gap at all on the adjustable stop, is this correct?

The first pic is what it looks like after I adjust and then push down on the clutch, and there is no gap. The second pic is where I think the spring should be while I'm adjusting the stop gap and the again with the cable connected.

Thanks for any insight.

Oh Haha · 12-29-2007, 03:42 PM

IMO, you have too much travel in the pedal causing the Omega spring to move too far. How far does the pedal move? Does it feel "right"?

Hugh R · 12-29-2007, 05:29 PM

Thanks Wayne, but I think I figured it out. I'll give it a drive tomorrow and see. As long as its in the air, I'm going to retorque the CV joint bolts. I'm tracking it for the first time the end of January at Willow Springs and don't want anything coming loose.

wesayso · 12-30-2007, 05:06 AM

Here's a thread that might help:
Clutch Cable Investigation
I think if you clean the helper spring it will return to the right position (near the HE) again.
But it seems you allready found your solution. Please add what you found to help others that may encounter the same trouble.

Inniswhe · 01-19-2008, 06:18 PM

I have been searching for an answer to what I think is the same problem as Hugh had and am looking for advise.

I am adjusting the clutch cable on my 84 and noticed too that when I set the 1.2 mm gap, I can pull the helper spring forward with my hand and it will stay slightly forward off the heat exchanger in the "cammed" position as described by Hugh. It does not seem to have enough strength the hold the lever back against the heat exchanger. This is prior to adjusting the cable so there is not even pull from the pedal spring.I don't think it is possible to set the 1.0mm gap with this arrangement.
I sprayed some PB blaster in there to loosen the adjusting nuts up and also to see if the helper springs are freed up and they are definately not fused together . There is actually some space between them so I am thinking the springs are just worn out but I am wondering if it could be something else. See pics below.

If it is the spring I will order a new one. If I replace the spring should I replace the cable and any other components as preventative maintenance so I am not back in here again soon ?

Anyone have any thoughts or opinions

Background:
I am new to 911's and I am adjusting my clutch as well as some other repairs that were identified in my PPI so I do not have alot of knowledge to draw upon. I live in PEI , no where near any Porsche mechanics so I have the bentley book, 101 , and research this site a great deal.

My tranny was a little notchy when I test drove the car and the PPI ( by a hightly recommended independant in Boston) identified the clutch as being out of adjustment, with no slack. He indicated that the clutch should be adjusted first to try and correct the notchy shifting. This guy is very experienced, he could not say for sure if clutch adjustment was the problem but he thought it very well could be. The shifting was not really bad or anything but entering 2nd is a little tricky.

Lever with helper spring against H/X:

Position " cammed " forward just from pushing with my hand:

Inniswhe · 01-20-2008, 03:21 PM

Anyone have any insight into my helper spring?

Hugh R · 01-21-2008, 03:03 PM

What I did was I cammed it towards the heat exchanger. When its the other way you can't get the clearance of 1.2 mm on the stop. When I push on the clutch, it closes that gap (i.e., it cams the other way). That worked for me. I suppose when you go to adjust it again, you'll have to cam it back towards the H.E.

Inniswhe · 01-21-2008, 03:23 PM

HughR,

Do you think this means our helper springs are worn out ? It sounds to me like they must be . Others have talked about the snap that should be there when the spring comes back to the h/x ?
I can probably hold it back to make the adjustment and will probably do that but I am curious. I guess it probably doesn't make a big deal if the spring is worn as I believe it was added to assist the driver and reduce pedal effort when the spring cams forward.

Ross

Hugh R · 01-21-2008, 06:37 PM

Its possible the spring is worn out. At the moment, mine is working fine.