Forum Discussion

Naio's avatar
Naio
Explorer II
Dec 25, 2019

How do I put this electric motor back together?!

Got my shave ice machine motor back from the repair guy. Started to put it on the machine. Turned the shaft and it was rough and clunky.

Since it was Christmas Eve, I decided to see if I could fix it myself. Opened the motor up, found that one of the permanent magnets had come unglued. After a quick Google, I sanded the interface and glued it down with J-B Weld, clamped it overnight.

But yes, in all this, I managed to lose track of which end had the brushes on it and which end was the shaft. There don't seem to be any markings to tell me. I'm also not a hundred percent sure that I got the magnet oriented right, although I am maybe 75% sure. Yes, it was a bad day.

So, at this point I'm hoping one of you retired engineer types can help me out. Again.

Does it matter which end the brushes are at?

Will I ruin everything if I have the magnet switched around wrong?

Sigh. Merry Christmas.
  • Naio's avatar
    Naio
    Explorer II
    alaska dennis wrote:
    Does it matter which end the brushes are at?
    Yes if you can put it back together either way One way it will spin backwarks and if permanent is in backwards no spin. To check use another magnet and it should attract on one and repel on the other.


    Thank you, Dennis :-). I did check the magnet, But whichever way I switched it around, it still attracted to both its neighbors.
  • If it were me I would return it the the "repair guy" and ask him to fix it properly.
  • Does it matter which end the brushes are at?
    Yes if you can put it back together either way One way it will spin backwarks and if permanent is in backwards no spin. To check use another magnet and it should attract on one and repel on the other.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,194 PostsLatest Activity: Feb 01, 2025