After the torque converter there is a single plate clutch operated by a foot pedal. The foot pedal controls an air cylinder. When the foot pedal is pushed down it puts air into the cylinder and disengages the clutch. A large spring returns the cylinder and engages the clutch. The clutch did not move under air pressure. I tried to move the cylinder with a large bar. The cylinder was rusted stuck. I took the cylinder out of the loco and took it home. I hooked the cylinder up to the winch on a tow truck and put some tension on it. after 4 days it broke loose.
With the linkage disengaged, the clutch plate was stuck between the flywheel and the pressure plate. I worked on that for a couple days. I finally got the clutch adjuster freed up and the with the adjuster backed off the clutch plate freed up.
