Thank you guys for your input. I tried the pry bar to no avail but got it to pop right off with a puller (the one circled in blue).
I put the Pump in a vise, placed the two "arms" over the outside of the gear (over the teeth) and it took quite a bit of force but it popped right off without damaging anything.
*Just be ready for it to 'POP' off. It would be wise to place something soft under the gear to catch it when it does come off.