Removing the Packing nut & packing MIGHT free up the shaft. To free up the pump vane, you'll need to remove pump mech or top of pump to pour Tranny Fluid [2 qts]in FILL Pipe.

Reproduction/Fantasy Cans
http://i124.photobucket.com/albums/p2/oldegaspump/AllCansMASTERTHUMBNAIL_zps4bfdbbc7.jpg
Rnd Can Re-lids