Clutch helper spring question

[997at]

Hi Guys. Putting everything back together after a complete CIS overhaul. Got the engine back in the car and am now reinstalling the clutch helper arm and omega spring. Got everything back on and set gap between the helper arm and the throw out lever. Tried the clutch and heard a metal to metal knock at the end point of clutch pedal release. The issue is that the omega spring is hitting the heat exchanger. Any easy fixes for this, or is this a sign of a tired omega spring? I could always just adjust the cable to put more tension on the spring to move it away from the exchanger except I noticed that the threads on my cable in this range of the adjustment are stripped. New cable time maybe? Clutch was operating fine before I took the engine out.
Another quick question. Why does the factory call for a 1mm gap between the release arm and the helper arm stop bolt? This just makes for a notchy feel at the top of the pedal push.Smoother just to set the gap to zero? Thanks for any advice.

[proporsche]

Hi, your problem is that this L shape bracket on the clutch arm is bend.Remove the arm remove the bracket and shape it back .The shaft for the Omega spring has to stop on the "L" bracket.On picture number one .
The 1mm on little finger is necessary so clutch pedal has a free play on it.Believe me the Porsche technician would tell you otherwise back in the Porsche factory.
Once you are adjusting the cable there should be more then 1mm gap.While adjusting the cable watch the omega spring for movement.As soon as you see it moved stop adjusting the cable.Then you do adjustment on the little finger .I used to loosen the cable a little more for tall clients and tight for shorter personas.The clutch should engage in the middle

Also make sure all is lubricatedincluding the shaft on which is the clutch arm.
Ivan

[997at]

Originally Posted by proporsche

Hi, your problem is that this L shape bracket on the clutch arm is bend.Remove the arm remove the bracket and shape it back .The shaft for the Omega spring has to stop on the "L" bracket.On picture number one .
The 1mm on little finger is necessary so clutch pedal has a free play on it.Believe me the Porsche technician would tell you otherwise back in the Porsche factory.
Once you are adjusting the cable there should be more then 1mm gap.While adjusting the cable watch the omega spring for movement.As soon as you see it moved stop adjusting the cable.The you do adjustment on the little finger .I used to loosen the cable a little more for tall clients and tight for shorter personas.The clutch should engage in the middle

Also make sure all is lubricatedincluding the shaft on which is the clutch arm.
Ivan

Ivan, thanks for the info. I'll check out the L shaped tab when I get home tonight. It might have been that when I snapped the spring back into position that it bent the tab a bit. I like your adjustment procedure...makes much more sense than the factory procedure to be honest. I'll let you know if that solves the problem.

[proporsche]

I wanted to add one more thing.The Omega sprigs actually never gets tired.
Usually they get broken on plate with the big S on the end and sometimes middle plate.I used to collect the old and made out of broken pieces a new perfectly working Omega spring(the steel is very good quality).
The secret is lubrication.For this i use only one kind .It is Wurth HHS 2000.I recommend you to get one for your garage;-)

Ivan

[theiceman]

Yup Ivan helped me out with this exact thing last fall , the spring was falling under the " L bracket" and hitting the exchanger.
Interesting to note however that once adjusted the spring actually doesn't touch that L bracket, it is really only used for the initial setup of 1.00mm .
When adjusting for the 1.2mm it pulls it away and that becomes the rest position.
If you are not sure what I mean you will see when you adjust

[spindlycat]

hi guys
sorry to ressurect this thread but it has best pictures for me to compare with mine.
Should my clutch arm shaft (number 1 in pic) stop inside the 'L' plate (inside number 2) or should it rest on outside of that L plate?
My plate looks exactly the same as one in your picture, it only has a small lip on it, but what should it look like if you that one is bent?

[proporsche]

can you explain better??

this
it only has a small lip on it, but what should it look like if you that one is bent?

[spindlycat]

The first picture shows mine setup before i Push the clutch pedal, then after pushing the pedal seems to pull the omega spring around and now pedal is half way between floor and brake pedal, see below picture where spring seems to have rotated around



surely this is not correct? that is why i am questing the 'L' plate.
Any help appreciated.
ta jon

[proporsche]

your clutch cable looks loose and the adjustment on the little finger is to large...

[spindlycat]

proporsche, thanks for replying.
I have tried this several times now and with cable 15mm nuts tight.
Upon first depress of clutch pedal it seems to be pulling the omega spring around, look at the position in pictures.
I wanted to check how i know if my 'L' plate is bent as it looks identical to the picture labelled '2' in red in original posting. When i say the lip i mean the side of 'L' which is the upward facing angle which i assume should be 90 degrees compared to face held in with two screws.
The other big question though is should the arm site outside or inside of the 'L' plate, as at the moment when i setup inside the L plate, as soon as i depress pedal it just pulls the spring around

[proporsche]

it has to rest when you let it go on the L shape bracket.If not ..remove it and make sit strait.Also your adjustment is not correct on the little finger too much space..as seen on the pic...the 15mm nut should be tight only after adjustment .On your pic i see the cable is loose...
Ivan