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Author Topic: Whirlpool OTR microwave oven  (Read 131 times)

Online Thorning

  • Technician
  • Member Since: Jun 2013
  • Posts: 697
Whirlpool OTR microwave oven
« on: October 24, 2019, 08:55:46 AM »

I have a microwave oven with the model number as shown above. It is about 11 years old and heats properly with no problems . It has a glass turntable. The turn table starts and runs but jerks a little as it rotates. There is no evidence of damage to the drive spindle where it contacts the glass plate/  turntable .Is this plastic spindle the problem area or should I look elsewhere in the drive underneath ?
Any suggestions ?

Online Thorning

  • Technician
  • Member Since: Jun 2013
  • Posts: 697
Re: Whirlpool OTR microwave oven
« Reply #1 on: October 24, 2019, 11:49:09 AM »
For some reason the model number did not show up in the subject line. The model number is as follows:
MH1170XSB-3

Offline johnboy3

  • Technician
  • Member Since: Nov 2012
  • Posts: 334
  • Country: us
Re: Whirlpool OTR microwave oven
« Reply #2 on: October 25, 2019, 08:59:40 PM »
Thoroughly clean the bottom of the cabinet and the turntable support rollers.  There are either lumps of dried glop on the surface of the rollers, or stuff on the circle of the cabinet where they roll.

Online Thorning

  • Technician
  • Member Since: Jun 2013
  • Posts: 697
Re: Whirlpool OTR microwave oven
« Reply #3 on: October 26, 2019, 07:02:46 AM »
It looks to be fairly clean in that area but I will reclean it and see what happens.

Offline manden

  • Technician
  • Member Since: Oct 2011
  • Posts: 277
Re: Whirlpool OTR microwave oven
« Reply #4 on: October 26, 2019, 08:00:38 AM »
Is the plastic coupler under the tray tight on the motor shaft?
It is a half round shaft so perhaps it is partially stripped.

More likely is that a gear is missing a couple teeth in the motor.