MTH Steam 0-8-0 Motor turns by hand not with power.

Missabe....don't think it is a good idea to apply track power (AC) directly to the can motor to test it, as it operates on DC voltage. The motor will not run, and you can do irreparable damage to it.

If you are going to test a can motor, make sure you have a variable DC transformer to do it with, or have a bridge rectifier inline between the AC transformer and the can motor, to supply a DC current.

Peter......Buco Australia.

Thanks.  I hope I didn't create another problem.  Thanks for info on DC can motors.

Ignorance can be expensive but expensive lesson is never lost.

What Buco said.  Every O-gauge loco made in the last 10 years that I can think of has a DC motor.  Never put leads from an AC transformer to these motors, or you will demagnetize them or burn them out!  Not only that, but unless you also disconnected the motor from the electronics board stack, you were feeding AC back into the motor driver circuit (which probably isn't good! )

If you REALLY want to verify the mechanical integrity of the drive train, you have to disconnect the motor from all on-board circuitry.  Then you can put DC power on the motor terminals.  If you don't have an HO power pack or bridge rectifier handy, you could even use clip leads to a 9V battery.  Watch your fingers because it'll run fast!!  If the motor spins and the wheels turn quietly with ample power, then your problem is electronic and not mechanical.