take the two screws out of the top brush plate. make sure to keep track of brushes and springs
as they tend to "spring" out. turn armature out of motor. Now turn the wheels on the motor to make sure they
turn freely. Clean commutator face, brushes. drop of oil where commutator shaft sits into motor. grease gears
in gear box, grease worm gear on commutator shaft. reinsert commutator/shaft back into motor. clean brush plate
and brush tubes. reinstall brushes, brush plate and screws. make sure all wire connections are soldered tight.
If there is an e-unit. I would 1rst spray it with CRC electronic cleaner(available at Walmart in automotive section, red can).
let dry, test on track. Usually I have good luck with that CRC cleaner and sometimes all is well after that. worse case scenario
you may have to pull e-unit apart and clean drum inside of e-unit. Have fun and goodluck
Popi
