planer motor slow down

[larry r. burke]

Planer motor got hot. Brushes arching more than normal. Smoked some and speed is reduced. Will new brushes likely fix this or will I need a new armature as well?

[Mark]

Hi Larry,

It sounds like the armature and possibly the field have been damaged. The arching you saw is caused by the bad armature. The smoke comes from the epoxy insulation on either the armature or field melting and burning off. You will need to inspect the field, looking for signs of heat damage. Also take a look at the plastic housings. They can sometimes melt when the motor is overheated. The armature is part #5140011-80, the field is part #5140011-78 and the motor brushes are part #5140011-85.

All of these parts are available from http://ereplacementparts.com.

Good luck with your repair!

-Mark