6 replies to this topic

[RWRio93]

Hi all,

 

I have a problem with the clutch where by I am fully depressing the peddle but when I go to put it into gear it 'crunches' and i cant select a gear.

 

Obviously i need to adjust something somewhere but can anyone tell me how best to do it. I believe the clutch is fully bled through but perhaps i still need to bleed some more? 

 

Any help or pointers much appreciated.

 

Thanks

[mellon87]

I had the same problem. I ot this advice from a guy on here:

 

First of all check that the clutch arm is not bent. Then measure the linear movement at the very top of clutch arm. It must be moving a minimum of 0.55". If there is less than this movement then there is a hydraulic problem.If the top of the arm is moving 0.55" or slightly more, you need to check for wear in the top or lower clevis pins. They are the pins fixing the top clutch push rod out of the slave cylinder onto the top of the arm, and the pin holding the arm onto the clutch cover. They wear badly and effect the clutch operation.Check the clutch settings. To do this undo the two big nuts on the end of the clutch plunger and back them well off. Then pull the arm towards the inner wing as far as it will go and set the clearance between thw small projection onn the arm and the 1/4" UNF stop bolt to 0.020". Lock that bolt in position with the small 7/16" AF nut.Then get someone to push the clutch pedal right to the floor and hold it there. Screw the inner of the two large nuts in until it just touches the clutch cover. Release the pedal and screw the inner nut in a further 1/2 a flat (not 1/2 a turn!). Then screw the outer nut in to lock the inner nut in that position, making sure that the inner nut does not move.The clutch is then correctly adjusted

 

These settings are for a pre verto clutch so make sure thats what you have before doing the above. Pre verto has the long clutch arm, google it if needed.

 

It may also be that the push rod in the slave needs extended. This can be done by putting a nut or something in the slave so it acts as if it were longer.

 

Obviously this isnt the best fix as it wasnt made for this reason, but if its just a short fix you want then try it. Ive done it and it works perfectly.

 

Cheers

[Cooperman]

Glad to see someone has taken the trouble to read an earlier post of mine  .

[mellon87]

haha. ... makes me look like I know what im talking about!

 

Seriously though Rio, Cooperman knows what hes talking about so Id give it a go.

[Cooperman]

If anyone needs it I have a very comprehensive fault analysis covering clutch drag. It's on here in a couple of posts, but if you can't find it PM me and I'll send a copy.

[james113]

I had the same problem. I ot this advice from a guy on here:

 

First of all check that the clutch arm is not bent. Then measure the linear movement at the very top of clutch arm. It must be moving a minimum of 0.55". If there is less than this movement then there is a hydraulic problem.If the top of the arm is moving 0.55" or slightly more, you need to check for wear in the top or lower clevis pins. They are the pins fixing the top clutch push rod out of the slave cylinder onto the top of the arm, and the pin holding the arm onto the clutch cover. They wear badly and effect the clutch operation.Check the clutch settings. To do this undo the two big nuts on the end of the clutch plunger and back them well off. Then pull the arm towards the inner wing as far as it will go and set the clearance between thw small projection onn the arm and the 1/4" UNF stop bolt to 0.020". Lock that bolt in position with the small 7/16" AF nut.Then get someone to push the clutch pedal right to the floor and hold it there. Screw the inner of the two large nuts in until it just touches the clutch cover. Release the pedal and screw the inner nut in a further 1/2 a flat (not 1/2 a turn!). Then screw the outer nut in to lock the inner nut in that position, making sure that the inner nut does not move.The clutch is then correctly adjusted

 

These settings are for a pre verto clutch so make sure thats what you have before doing the above. Pre verto has the long clutch arm, google it if needed.

 

It may also be that the push rod in the slave needs extended. This can be done by putting a nut or something in the slave so it acts as if it were longer.

 

Obviously this isnt the best fix as it wasnt made for this reason, but if its just a short fix you want then try it. Ive done it and it works perfectly.

 

Cheers

This seems to be quite a good guide for doing this, do you have one for a verto type clutch?

 

cheers.

Edited by james113, 29 May 2013 - 07:01 PM.

[Dan]

  Verto clutches are self adjusting in use and can't be reliably adjusted during their life.  They are set when they are fitted and then they tighten up as they wear down.  You can try adjusting it but it will be a hit and miss sort of thing, you need a new one really.