Can you change brushes in a small motor? How, if so.
Generally, I remove the brush caps slowly and keep the springs from flying away.
Pull out the spring(s) and tap and dump the brushs.
Degrease the brush holders
Load new brush(s),
Load new or existing, spring(s).
Replace brush caps.
It's that easy.
Good luck
Brush and spring part # 81201-brush is no longer available through Bachmann
parts. Can anyone provide alternatives to get them pleas ? Bachmann motors
are easier than Mehano motors for brush replacement.