Moen Decoupled Rotor / Broken Internal Coupling

Moen garbage disposal motor runs but the jam plate does not spin (no grinding action)

Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Sheared internal drive coupling between motor and jam plate, Stripped rotor shaft, Internal mechanical failure of grind assembly, Manufacturing defect after heavy impact

How to Fix / Troubleshooting

Safety first: Turn off and unplug the disposal.

Confirm symptom:
- Look into the disposal while briefly turning it on (use extreme caution and keep objects and hands away).
- If you hear the motor but the jam plate does not move, the internal coupling is broken.
No field repair:
- Moen disposals do not provide access to repair the internal coupling.
Replace unit:
- Remove the disposal from the mounting assembly and install a new Moen disposal.

Repair Difficulty

Hard 4/5

Required Part

Jam Plate / Motor Coupling (Integral to Motor Assembly)

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