my 240's Clutch pedal adjusting itself?

[Neil]

I like my clutch adjusted with as close to off the floor engagement as i can.

my problem is if I adjust the pedal lower by threading the rod in, within hours the engagement is back up at the top which feels like my dads volvo station wagon. The whole pedal assembly moves back up as if I made no adjustment at all. This 1) really sucks for drivability and 2) confuses the **** out of me.

I could go thread the adjustment rod in all the way right now. On a 50 mile trip the engagement would slowly start to make its way back up to a 'normal' position. I know how a clutch master cylinder works, but Im having a hard time understanding what's happening in my case. Its as if the piston is moving back farther and farther. I could then later thread the rod back out a bunch, pump it a couple times so its at a more factory setting half way point, but itll still creep up to the top.

i installed a stainless clutch flex line and new slave and deleted the dampener assembly. when i did this I bled the entire line clean with fresh castrol gt-lma. The CMC is still the original.

someone tell me what stupid thing im not thinking of that's making this happen. its really uncomfortable feathering the clutch when engagement is higher than the brake pedal. Obviously a new clutch master would be the next step and most likely be the fix but I still want to know what the hell's happening just for the sake of figuring it out.

[Neil]

durr boy do i feel silly.

The rod into the MC is just used to take up slack. The 14mm pedal stopper lock nut that i'd seen plenty before but never payed any mind to is what adjusts the height.

feels so awesome now. instead of a pickup truck it feels like a sports car again.

[rsmithdrift]

I think my pedal did this. I had a new clutch and master cylinder installed 1,500 miles ago, and 500 miles ago my clutch went from grabbing about 1/4 to 1/2 way up, it started creeping and is now all the way at the top. I know it's not the clutch slipping because it's new and I get on it alot.

Could you explain how you adjusted this to me if you don't mind? It really is obnoxious and I don't have a fsm.

[kamikazestorm420]

theres a rod with a 12mm? or a 10mm nut on it.

you loosen the nut and turn the rod towards the master cylinder to raise the engagement point, and turn it the other way to lower the engagement point.

dont lower the engagement point too much, because you wont be able to get it in gear.

[Neil]

Its a combination of that and turning in the stop-bolt.

to detail my answer to my own question,

loosen the 12mm nut on the rod going into the MC. Turn in the rod say, 4 full turns. Do not yet tighten the 12mm. Look higher and adjust the 14mm bolt down so when the pedal is up, theres a teeny bit of slack before it engages the mc. Test the engagement. Play with the 14mm height stop bolt and the rod to get the engagement you want. Then tighten the 12mm nut on the rod to keep it from vibrating out of position.

If you do not adjust this 14mm height stop bolt, engagement will creep back up on you.

It is also important to have a little slack at the top of the pedal travel wherever you set it. If you have NO slack, the release bearing may be constantly riding on the pressure plate which will wear it out quickly, or worse, engage the pressure plate just enough to make the clutch feel like its slipping.

The rod into the MC is just used to take up slack. The 14mm pedal stopper lock nut that i'd seen plenty before but never payed any mind to is what adjusts the height.

Modified by Neil at 10:35 PM 2/5/2006