Whirlpool garbage disposal vibrates excessively and causes the sink to shake during use.

Safety first: Turn off power before inspecting under the sink.

• Check for foreign objects: With power off, inspect the grinding chamber and remove any objects stuck on one side of the impeller.
• Verify mounting ring: Check that the Whirlpool mounting assembly is tight against the sink flange. Tighten the three mounting screws evenly.
• Inspect sink flange: Ensure the flange is seated flat and not cocked to one side.
• Check plumbing alignment: Make sure the discharge pipe is not forcing the disposal to sit at an angle.
• If vibration continues: The impeller plate may be bent or the motor shaft may be out of balance, requiring replacement of the disposal.