Kitchenaid washing machine KAWE850VAL1. It wasn't agitating or spinning. I could hear the motor run. I opened it up and found the coupler broken. I replaced the coupler and put everthing back together.

Now the motor is not running but I can hear it humming. I figure that what happened is that the transmission froze up and this is what caused the coupler to break. So I took it all apart again and sure enough, where the motor couples to the transmission, I am not able to turn the transmission shaft.

I decided I would put it back together until I can learn more about fixing it. I reattached the motor and pump and put the cabinet back into place. I thought, what the heck, I'll just try it one more time. I put it into the spin cycle and pulled the knob out. IT STARTED TO SPIN. I let it spin a few more seconds and it was spinning good. I shut it off and then pushed it back into postion against the wall. Then I put it back into the spin cycle and pulled the knob out. I WON"T SPIN AGAIN!!!! I can hear the motor humming. It does fill with water, although I only let a few cups of water to enter machine.

What do you think is going on? Is there shift linkage that could be screwed up. Cause it seems that I should be able to turn the transmission shaft by hand, but I do not know that for sure. What would cause it to not spin or agitate, then be ok when I messed with it, and then not spin again after I moved it?