Tractor Repair: Case 1070, clutch plates, slave cylinders

Question
Hey Arnie, I just bought a Case 1070, It's a diesel with 4600 hours. I have other tractors but they are IH or CIH, I have never had a case. I do lots of minor repairs on my tractors but I have worked with IH all my life, but case is new to me . This tractor has a couple problems, I'm hoping you can tell me where to start.
   The most troublesome to me is that the brakes don't work, the left one works a little, but the right one and the park brake don't work at all. Can i adjust them using the linkage, and does the park brake link into the same brakes? Or do i need to open up the brake housing?
   Second, the PTO turns all the time, at low idle i can stop it with my hand, but at higher RPM's i can not. Is there a PTO brake i can adjust, and if so, where? If not, what can i do?
   Lastly, the clutch is very hard to push in. There is quite a bit of free play, but the last inch or so is very hard. It will not shift unless it is pushed all the way to the floor, which is hard enough for me to do, my children can not do it. What do you think? Can it be adjusted? How?

Answer
  The brakes probably need to be bled or adjusted.  They are supposed to be self adjusting, but sometimes the self adjusters don't work.  There are small slave cylinders on top of the brake housings with bleed screws that you can bleed with the engine running.  You don't have to push the brake pedals, just open the bleeders and let the oil run until there are no bubbles.  When the pedals are pushed, the slave cylinders push up on the actuator arms to apply the brakes.  The cylinders don't have much stroke, so they have to be adjusted with the knurled knob until they only move about a half inch until the brakes are applied.  If they still don't hold, then the brake housing covers should be removed and the brake disks replaced.  There is a spring loaded pto brake inside the pto housing, but it is not adjustable.  If the pto keeps turning when disengaged, the pto clutch plates are warped or the pto brake needs replacing or both.  The pto housing will have to be removed from the rear of the tractor to repair it.  From your description of the clutch pedal, it sounds like it is not a powershift model.  Powershifts have a pedal that only operates a hydraulic valve and is very easy to push.  The free play can be adjusted by turning the turnbuckle on the linkage and may help make shifting easier, but will not make the pedal any easier to push.