If it is a straight shaft check for any set screws that may be painted over, if not get a good hold of it with a puller, put tension on it then if necessary put some heat on it while putting more tension on it. You could start out with some penetrating oil first and let it soak for awhile.

1941 Chevy
"First rebuild - complete!"
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1941 GMC resting peacefully
1946/1947 Chevy Street rod on s10 frame complete
1945 GMC panel truck in line for restoration
1941 Plymouth stock complete
1941 GMC COE in restoration process
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1941 Chevy Coe uncertain future resting now