Thank you —okay so the noise and sparks are definitely coming from the motor.
I haven’t done the entirety of 3 minutes yet because:
- it seems like it looses power as I’m holding accelerator pedal down (up in air) and then I let off for a moment and depress again and then power comes back
- sometimes it doesn’t do anything when I depress accelerator—I have to rotate the one wheel while holding the other and then it goes
Sooo before I continue does that sound like motor needs servicing? As I said I don’t want to do damage the controller or anything else by trying to get it to go.
Yes, It sounds like it is landing on a dead spot.
A service on a motor is always a good idea. It sure looks like this one could use it, but the running in place sometimes works.
It was worth a try.
Tip- If you look at how the big cables are attached to your motor, you will see a nut on top, and below the cable end connector. Find a wrench that fits down on the lower nut to hold it in place as you spin the top nut off.
This keeps the whole stud from spinning if you try and turn the top nut only.
If the whole assembly turns, you could crack the insulator, and even tear off the spot welded wires on the inside. It keeps a simple clean out operation, from turning into an “order some expensive parts and wait for them to come in” job. (If your motor is really needing service, you may need to order a brush kit anyway.)
Ok so motor was removed and serviced and I was told these little things are stuck and need replacing. Does that sound correct?
Yes, that sounds correct. A motor uses two if these as a set.
Depending on your motor shop(and how stuck they are), most of the time I have been able to unstick these brushes without damage and continue using. But it takes time and patience. Two things pro shops usually don’t have much of.
Hopefully, they will also freshen up the commutator and a good overall clean out. Ask if they have a new little rubber bumper and a dab of spline grease that goes in the coupler.
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