Loud grinding noise when dishwasher was draining

ApplianceMaytag Dishwasher

ModelMDB5000AWW

Level of DifficultyReally easy

Time to do repair30 - 60 mins

Age of Appliance5 - 10 years

Tools Socket set

Joann From Oakland, OR

Oct 20, 2010

3 out of 3 people found this instruction helpful

1. Print out the "pump and motor" exploded diagram and label the numbered parts down to #11 (discharge housing assembly).

2. Unscrew the "lower spray arm cap" (#34) by hand (it just twists off), remove the "jump up nozzle" (#1), and lift the "lower spray arm" (#2) and filter guard" (#36) out together.

3. With a torx screw driver, remove the screws holding the "pump cover and secondary filter assembly" (#4), taking note how the assembly was positioned. Be careful not to lose the two plastic "lower spray arm seals".

4. Lift out the "pump housing filter" (#6) and "rinse arm assembly" (#7).

5. With a 5/16 wrench, remove the bolts holding the "discharge housing assembly" (#11). You will likely find a plastic disk just sitting there under the discharge housing assembly. This is the source of your problem. It is the lower plate that has worn loose from the rest of the assembly and the noise is from it being ground by the impeller below.

6. The simplest fix is to order a new "discharge housing assembly" along with gaskets #37 - O-ring (for "pump cover in step #3. Mine was missing.) and #38 - "upper discharge housing gasket. Three parts to order and save your exploded diagram for when you put it back together.

7. Remove the "discharge housing nut" at the top of the old discharge assembly, lift off the "wash arm support", and put both on the new discharge assembly.

8. Insert new seals where they belong and reassemble the dishwasher in reverse order.

Help other customers find the most helpful instructions.

Were these instructions helpful?

Diagrams and Parts List for this repair

Part PhotoPart DescriptionPriceAvailability

Upper Discharge Housing Gasket

Part Number: PS2098976

$3.96
In Stock

O-RING

Part Number: PS2099290

$19.45
In Stock

Discharge Pump Housing

Part Number: PS2340910

$22.87
In Stock