A/C CA Cutch/gear slipping

I was just recently given an Allis Chalmers CA. I don’t exactly know the year as my neighbor just dropped it off. I used it today to pull around a green chop feeder to put hay in for the cows and noticed it drove beautifully out to the wagon but I put it in reverse it didn’t move. I put it back into forward and it didn’t move either. Placed it back into reverse and it clunked and started moving as I was letting the foot clutch out. Hooked the wa gin up and tried to go forward and it would move until after a few cycles of the clutch it clunk d and then moved. It wouldn’t pull the empty wagon unloaded up a slight grade so I unhooked to finish chores.

Could it be because it sat in the barn for a few years? Hand clutch or foot clutch? I ordered a service manual but with Xmas it’s a few days out.
 
The following will give you a quick idea of which clutch to look at first. Put a good load on the PTO with the tractor in gear. If the tractor and PTO both stop, it is the engine clutch. If the tractor stops moving and the PTO still operates, it is the axle clutch.
 
The following will give you a quick idea of which clutch to look at first. Put a good load on the PTO with the tractor in gear. If the tractor and PTO both stop, it is the engine clutch. If the tractor stops moving and the PTO still operates, it is the axle clutch.
Right on, I’ll give that a whirl tomorrow evening when I do chores again. Are parts relatively available for these tractors?
 
What Jim said. I rebuilt my axle clutch not to long ago got parts from sandy lake ac parts. If you do not need live pto you can put a c axle in it and do away with the clutch.
 
it's not impossible that the drive shaft in the torque tube from engine clutch has stripped. Same for something in the axle.
 

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