ok when i did my ford cummins conversion i put my 94 cummins in a 91 f350. ford cummins told me to use the ford master cylaner and clutch line with the nv4500 slave cylandar which is what i did. took it on a trip last weekend the clutch has to go all the way to the floor to disengage. when letting the clutch back out maybe 3/8" the clutch grabs. and after 2 days the master cylander would be empty. any idea?

 

i would check that crappy master cylinder they are stinkin plastic junk

 

ok that still dont help me at all because the master cylander that dodge uses is also plastic as is the hd version southbend and valair sell so i can tell ya that the plastic isnt causing it

 

you definetly have a leak, do you see any fluid or a wet spot somewhere.

 

off the top of my head no everytime i fill it it drips i can take a look with having someone pump it to see if i can see anything

 

I'd look where the lines go in to the cylinders, its got a o-ring there.

 

ok i did some inverstigating no fluid leaking around the slve but there is soom around were the line conects to the mastercylander, i put the new o-ring on the line o bought from ford when i did the conversion