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Moen Solutions

My Disposal is Leaking-New Installation

 
This article will help you determine the source of a leak on a newly installed Moen garbage disposal.
Leak Test
  1. Place sink stopper in sink and fill the sink with water.
  2. Wrap paper towels directly at the very top of the garbage disposal around the sink flange.
  3. Wrap paper towels around the drain discharge elbow on the side of the garbage disposal where it connects to the disposer.
  4. Wrap paper towels around the dishwasher connector on the side of the garbage disposal where it connects to the dishwasher.
  5. Once you have wrapped all the necessary places, release the stopper and let the water drain.
  6. Check all of the paper towels to see if they are wet. If any are wet, the leak is coming from that area and is caused by an issue with the installation of that specific item.
Where Do You See Water?
Leak Around the Top of the Garbage Disposal 

top leak.png

Leaking around the top of a garbage disposal is usually caused by one of the following.

Not enough sealant used-If there is too little or no sealant used under the sink flange than it can result in leaking around the sink flange.

Black rubber or fiber gasket-The gasket needs to be seated flat against the underside of the sink.

Loose screws-If the mounting hardware screws are loose this will allow for movement which can result in leaking.

Damaged cushion mount- Replace part (Moen Part # 1824).

breakdown.png 1- Sink Flange
2- Rubber or Fiber Gasket
3- Cushion Mount
Leak Around the Middle of the Garbage Disposal 

middle leak.png

First ensure that the water is not leaking from the top of the garbage disposal and dripping down. Below are other potential reasons for a leak.

Custom Installation- Using another brand drain kit (1-1/2" drain discharge tube) for a unique installation:

  • Drain elbow gasket- See image "Correct Position For The Drain Elbow Gasket".
  • Re-using the drain elbow gasket- Re-using the drain elbow gasket from the original garbage disposal can cause leaking and is not recommended.

Dishwasher Connector (7/8" dishwasher connection):

  • Loose connection- If the dishwasher discharge connector or dishwasher clamp are loose there can be a leak.
  • Re-using the dishwasher connector- It is recommended to use the dishwasher connector, Moen part #1023, from the new garbage disposal.

Drain Discharge Elbow: 

  • Loose screws- The screws on the drain discharge elbow have Loctite on them which can make them feel threaded in all the way when they can be tightened a little more.
  • Drain elbow gasket- See image "Correct Position For The Drain Elbow Gasket".

Correct Position For The Drain Elbow Gasket:

gasket.png

1- Flare on drain discharge elbow

2- Black rubber gasket

3- Metal flange

Make sure that the drain elbow gasket is on the drain discharge elbow and behind the flare of the drain discharge elbow with the metal flange behind that. If the drain elbow gasket is installed between the garbage disposal and drain discharge elbow then the water may leak.

Leak Underneath of the Garbage Disposal 

bottom leak.png

 Leaking on the outside of garbage disposal housing:

  • Loose connection- If the dishwasher discharge connector or dishwasher clamp are loose there can be a leak.

Leaking from the metal plate on the bottom of the garbage disposal:

  • Loose screws- The screws on the drain discharge elbow have Loctite on them which can make them feel threaded in all the way when they can be tightened a little more.
  • Drain elbow gasket- See image "Correct Position For The Drain Elbow Gasket".

Correct Position For The Drain Elbow Gasket:

gasket 2.png

1- Flare on drain discharge elbow

2- Black rubber gasket

3- Metal flange

Make sure that the drain elbow gasket is on the drain discharge elbow and behind the flare of the drain discharge elbow with the metal flange behind that. If the drain elbow gasket is installed between the garbage disposal and drain discharge elbow then the water may leak.

 

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