I am having trouble with a vintage HAAS 1994 VF-3 z-axis 4-brush type motor.
It had overheated which kicked the machine off.
I inspected the internals, and could not see anything looking or smelling burned or discolored.
I blew all the carbon dust out, polished the commutator, cleaned out the slots between the copper terminals, and inspected the brushes
The questions I have are :
Would I get continuity between the commutator and the steel shaft if the windings are OK , or does continuity mean a short in the windings ?
With the motor wired up, but not installed and the power turned on,but the control not 'powered up' would I be able to turn the motor shaft by hand or not ????
Thanks for your help.