Guys,
I would not modify a Navy motor or any 16 square hole intake housing. (To Rare!)
I would press pin out of gear using a simple jig on small arbor press.
That way you can remove the steel eccentric cam to replace shaft seal or packing.
(See first picture.)
(Second picture) is a 1941 oscillator style pump from my 1941 Wizard WB-3 showing
The brass eccentric and drive pin retainer.
Good luck,
Bob
