smc ?s

i have 6 brand new smc 3/8 valves,  they been on the truck less than a day , the two dumps for the front stick almost every time i hit it down and my rear fill sticks all the time , anyone else had this problem? anything i could do to solve this?

what psi are you running?

do you have a water trap?  could be crap in the tank and lines got into the valves.  i did have a problem with smc's on my f150 when i was running a edc without a water/oil trap.  got the water/oil trap, replaced the diaphragms and didnt have any problems.

try a 90, or even a plug with a hole drilled in it on the dumps, something to get a little back pressure to allow the diaphram to close easier   as far as the fill  possibly trash???had the same problem on my smc's when i first installed them 5 years ago.

ya me too, run like 150 in the tank in mine too... so it cant be the pressure...dump valves stick open or closed fill valves stick...sux, guess i gotta take em all apart and oil them...

everyone i know that used to run 3/8 smc's always had the same problems.it was wierd the 1/2 never had a problem its was always the 3/8.never could figure it out and this was years ago.

i drain my tank once a week, they stuck the first time they got put on, now its every once in awile,  im running 200psi  .. everyone else that ive talked to that loved an swore by smc said they run 200psi threw them, think some marvel mystery air tool oil would mabye lube them up alil ? are would that be a bad idea?

ive had the 3/8 smcs for about 6 months now and they never stick so thats another casebut i would try the water trap and also very carefully open them and clean them