can't move forward or reverse

2004 F350 4x4 diesel 6.0 liter. While driving the truck, I lost forward and reverse. Engine still runs. Any ideas what happened and how to fix?

The tractor just stopped moving. All belts appear to be in the correct positions.

I have a yardman mower that won't go when I put it into gear. Is there anything besides the drive belt that could be the problem. The last time I used the mower, I ran out of gas at the end, so I just pushed it into the shed. Now it won't go into gear. Thank you.

I have a ayrd king rider mower model 742RL w/7speeds. Engine runs fine but will not go foward or reverse, can anybody help me out of warannty

I bought a ceiling fan hoping there would be a schematic. The fan has a fwd/rev switch on it but it will be hanging 20ft in the air. I'd like to put a switch on the wall so I can reverse it without getting a ladder. I can't figure out how (especially without a schematic)? But in the fan itself...