Here's the ultimate motor tool

If you need information about installing, repairing, and
maintaining any type of electric motor, this book belongs in your
toolbox. Completely revised and illustrated, it covers principles
of motor function, choosing and replacing motors, identifying and
repairing common problems, performing routine maintenance, and
more, all without excessive math. It's the guide your father relied
on, now fully updated for the twenty-first century.

* Understand both AC and DC motor function and operation

* Repair small series motors and troubleshoot special types of
motors

* Compare methods of motor control, including various switches,
starters, and timing relays

* Troubleshoot fractional horsepower motors, including split-phase
induction, capacitor start, repulsion, shaded-pole, hysteresis
synchronous, and universal motors

* Learn the best procedures for stripping and rewinding armatures
and stators

* Modify AC motors for speed control

* Discover which tools and supplies you'll always need