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Garbage Disposal Troubleshooting


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PROBLEM: Leaking Garbage Disposal
Garbage Disposal Mounting Assembly

Garbage Disposal Flange Mounting Assembly

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Leaking Garbage Disposal

Leaks can occur at a number of places on a garbage disposer. Let's take a look at the most common:

Leak at the Sink Flange

  • Turn off power to the disposal at the electrical service panel.
  • At the disposer mount, turn the disposal to the left (counter-clockwise from bottom) to loosen and remove the unit from the mounting flange.
  • Tighten the three mounting bolts.
  • If the bolts are tight, the leak may be caused by failed plumbers putty. Loosen the bolts and push the sink flange slightly above the surface of the sink.
  • Force plumbers putty between the sink flange and the sink, going completely around the flange.
  • Tighten the mounting bolts drawing the sink flange tight to the sink surface. The putty will ooze out. Wipe away excess putty.
  • Reinstall the disposal and turn power back on at the service panel.
  • Check for leaks.

Leak at the Dishwasher Connection

  • Tighten the clamp on the dishwasher hose connected to the dishwasher inlet on the disposer.
  • Replace the hose if the hose is leaking.

Leak at the Discharge Drainpipe

  • Check the bolts holding the discharge pipe to the disposal for tightness.
  • If that does not work, remove the bolts and the pipe and replace the gasket.
  • Reinstall bolts and tighten.

See Exploded View of a Garbage Disposal.

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Related Video
Replace a Garbage Disposer

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