If there's a bolt-on flange at the output shaft end, use an impact wrench and a socket to spin the output end with the shifter in high gear. That might be simpler than finding a drill with a chuck big enough to grab the pilot shaft.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!