[eugenebrooks]

We have pressed our fair share of pinions on and off FP motors.
You have to make a suitable support for the pinion to press
the shaft out, and a very square (to the shaft) hammer blow
is often required to break the shaft loose before you press.
When pressing a pinion back on, you have to remember to
support the shaft at the back of the motor, and not the motor
itself, or you will ruin the motor. The last bit of travel does
require a shim with a hole in it, or a small socket, to get the
shaft to stick out of the pinion properly.

Eugene