My father in-law is just fitting a hydraulic clutch conversion to his MT75 4x4 sapphire cosworth
The box is an oppliger motorsport box and the kit is from reyland
He has fitted to the box and bled the system.
After its bled you push the peddle and there is no tension on the peddle
phoned reyland and they suggested to try and swap pipes but still nothing
he has no leaks and no oil leaks anywhere

Any one fitted one and run through the fitting procedure?

Thanks

 

are you sure it's bleeded 100% and no air trapped somewhere?
I've fitted the same kit from Martin and not a problem at all.
Had the car on 2 post lift with someone behind the wheel pressing the clutch, while I was opening/closing the bleed screw at the gearbox and keeping the fluid level up.
Also check how the slave cylinder is fitted on the box, as far as I remember the bleeding screw needs to point down below when fitted instead of up, because you can fit it both ways!

Stephan

 

As said the bleed screw needs to be at the bottom, my hydraulic conversion has been perfect

Steve

 

Strip the master, you will find one of the jangle washers has dug into the cylinder wall and scored it. The piston then gets jammed at the bottom and won't return.
Strip it down clean it up, hone the score mark out of the cylinder and rebuild leaving the washer out and it will be fine.
Seems quite common, once you know you can take the washer out before you fit it.
It could be a minor alignment issue, but I bench tested a few and found the same problem

 

Thanks. Will pass on to him to check.