In 1946 I purchased a 1 1/2 ton Ford truck from the Government. (As Is). The clutch was stuck . A fellow vet told me to put the transmission in high Gear and try to get the engine running. This is the hard part. (maybe pull with a dozer). You should be able to drive the vehicle at this point. Start up a steep hill and let the vehicle stall and chug a lug backwards . This should loosen up the throw out bearing and solve the problem. It worked for me. Octagon1