[thefro526]

Originally Posted by slijin

The alternative - which is really just a wilder implementation of a pinion puller - is to cut a slot into a piece of steel (or similarly rigid material) such that it'll fit snugly around the axle, between the pinion and the motor, vise the piece with pinion up, motor down, then use a mallet with a pin punch to drive the motor out of the pinion.

This method is acceptable in a pinch, but it can damage the motor. I used this method to remove pinions from about a dozen tetrix motors last year and seemed to have damaged the bushings or some other internal part on one.