wondering if any one has used a hydraulic throw out bearing in a 1939 ford 3 speed transmission. Seems the simplest solution wondering if anyone has done it or a thread on it.
I used a hydraulic TO brg on my car (not a flathead) only because I had no room for mechanical linkage. To me, 1st choice is pure mechanical, 2nd choice if must hydraulic would be a slave cylinder working the fork. Last choice would be the hydraulic bearing. Why? Most trouble prone (not always, but it happens), no adjustment (I'm a control freak), most expensive ($125 min, prolly more for a better brand). If you go that way, follow the mfr's measuring instructions very carefully before ordering. The first one I bought was too long, had to exchange for a shorter one. (Too short can be shimmed. Too long makes for some further work or problems.)
X2..AND to change you have to separate engine and trans; do that once [like on a ot 92 Ford pick up] and you will have deeper thoughts about the "trick" TOB...
tried the slave cylinder idea and it will not budge the fork arm. you could push with both feet and still nothing
"tried the slave cylinder idea and it will not budge the fork arm. you could push with both feet and still nothing" I think you may have other problems
Same as Jimmy2car I would be led to believe that you have other problems not related to the hydraulic clutch setup. The onlything I can think of on the master cylinder /slave cylinder setup is that they may be miss matched and the master cylinder doesn't have enough poop to push the clutch in. Such as using a small car master cylinder/slave cylinder setup off a little four banger car that has a very light clutch to begin with. For the past 40+ years guys have used the mid 60's Chevy/GMC hydraulic clutch master and slave cylinder combo with little or no problems as those are designed for some serious clutches.
You need to diagnose the issue you're having before you jump to the conclusion that you need a hydraulic throwout bearing. Pull the transmission out of the car and check the throwout arm, throwout bearing, pressure plate, etc.