It is possible to remove the cab with the steering mast on the truck. As you lift the cab, you will need to gradually roll the chassis forward at the same time.
I would not try to do that unless you have a way to lift the cab straight up without it wobbling all over the place.

1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission