Yale NR035EA:
winding noise from traction motor area

during travel there is a winding noise from the motor area. oil level in the MDU is correct level. any ideas would be greatly appreciated.
  • Posted 12 May 2022 01:47
  • Discussion started by cpljarhead
  • Virginia, United States
Jeff butts
Showing items 1 - 3 of 3 results.
ok no brushes then...
you'll probably want to have motor checked for a bad bearing or possibly something coming apart inside it, or it could be as simple as some trash got inside it maybe? Make sure all the cables are securely connected and corrosion free.
i can think of maybe one other cause but that would affect the motor performance and would require checking the motor circuits and how they draw current on each leg of the power circuit, a diagnostic tool would be required for that to monitor the electrical operation between the controller and the motor.
  • Posted 12 May 2022 20:38
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
this is the newer NDR035 D831N06177T ac motor
  • Posted 12 May 2022 19:40
  • Reply by cpljarhead
  • Virginia, United States
Jeff butts
winding noise eh?
does it sound like clicking, speeds up when you accelerate?
is this an AC motor or DC?
if a DC then check the armature for unusual patterns on the commutator where the brushes ride.
if the motor has been stalled any the com bars will raise up and cause this.
the only remedy if this is the case is to replace the motor.
  • Posted 12 May 2022 15:53
  • Reply by swoop223
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com

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