The glass bowl pumps on military vehicles were eventually replaced with a steel bowl......very hard to find but boxes under the table at flea markets can yield treasures..... on military trucks that are fired up after lengthy storage...4 or 5 months in Winter time....some owners install a parallel fuel line with an outboard rubber priming bulb which allows filling the carb bowl without turning the engine over , killing the battery and increasing wear with limited oil pressure. some of the M37 Dodge 6 had a short handle on the pump that you could pump by hand and prime the system....they also had a priming hand pump squirting raw gas in the intake manifold before turning the engine...

Bob C.
CMP Heaven
The Hammond Barn