Tk5 with 4.0 Problem

[Rustbucket350]

I just swapped a 4.0 in my Bronco II with a 4.0 clutch. I did not swap the throwout bearing or slave cylinder. Now I have no clutch pressure and I cant shift in gear with it running. Before the swap the clutch worked awesome. Do I need to swap the throwout bearing and/or slave to make it work?

 

[adsm08]

Well the later slave won't work in your TK transmission, and the TOB should be the same.

It should have worked.

 

[Rustbucket350]

That's what I thought. I thought I might have ruptured the clutch line during the swap but it doesn't appear to be leaking. Maybe the slave or master just decided to go bad all of a sudden? I'm not sure how I'd test for one or the other.

 

[adsm08]

have someone work the clutch while you watch the slave, see if you can see it moving.

i have had to pump the clutch up a bit after engine replacements before.

 

[Rustbucket350]

I tried to bleed it tonight and took a look in the inspection hole but I couldn't see anything but the pressure plate. Maybe I wasn't looking hard enough. Somebody also left the rubber grommet in the clutch reservoir when they put it in so it wasn't getting any fluid.

 

[Rustbucket350]

I had an idea. I tried to replace the throwout bearing when the motor was out and kept pushing on the slave cylinder. Is it possible I caused the slave cylinder to fail by repeatedly shoving it inwards? This trans is old and I bet that slave cylinder is garbage anyway.

 

[Rustbucket350]

Well the slave definitely went out. Brake fluid all inside the bell housing. Turns out its an FM145 too lol it was just too dirty to read.

 

[Rustbucket350]

It was definitely the slave, thank god O'Reilly had one and the clutch came right back.