Question about Maytag MDB7100AWB Dishwasher

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Loud noise near the end of drain cycle model #MDB7100AWQ

Came on suddenly. Loud grinding, vibration near the end of drain cycle.I am guessing that something is caught in disposal blades. I have disassembled plastic parts down to round black plastic pump wheel on motor shaft. This seems so tight that I thought maybe it has reverse thread on it. Let me know, I don't want to break anything. Thanks.

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  • kfixe Apr 15, 2008

    I have the same issue what can be done to fix it? Loud noise like grinding at the end of the drain cycle.
    Thanks

  • gusmolinie May 12, 2008

    Loud viberating noise at the end of drain cycle

  • Anonymous Nov 17, 2008

    loud grinding noise near end of rinse cycle

  • oldtrophywif Nov 17, 2008

    loud grinding noise near end of drain cycle. Maytag dishwasher MDB7100

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On some othersites it was said that the plate on the discharge impeller came loose and was banging on the black metal impeller. When I took mine apart that what mine looked like. I glued mine back with J B WELD, and there is still some noise during rinse. One person said he took it out and the noise went away. The part came be bought for about $15.00 online. Are there any torque specs for these screws?

Posted on Feb 22, 2009

Have disassembled mine 3 times now... no the bolt attaching the black wheel is not reverse threaded. Just need to have a good grip on the wheel itself and you should be able to back the bolt out.

Posted on Mar 19, 2008

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I have a year old kitchen aid dishwasher and during fill cycle it makes a thumping noise. The dishwasher every 5 or 10 seconds shuts off fill cycle then turns back on which I think is what's causing...


Drain Pump

If the dishwasher is loud during operation, the drain pump might be defective or might have some debris in it. This is a common problem.


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Circulation Pump

If the dishwasher is loud during operation, and the noise is a continuous drone similar in speed to the circulation pump sound, it's likely that the circulation pump motor bearings have failed. Once this happens the circulation pump will have to be replaced, the bearings are not repairable.


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Drain Impeller

If the dishwasher is loud during operation, the drain impeller might be broken, or there might be debris in the pump. Generally, to gain access to the pump the top of the pump housing will have to be removed.


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Pump and Motor Assembly

If the dishwasher is loud the motor bearings, drain impeller or wash impeller might have worn out. All three of these components are part of the pump and motor assembly. It may be possible to replace one of the impellers, but the motor bearings cannot be repaired. In that case the pump and motor assembly will need to be replaced.


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Wash Impeller

The wash impeller is a small, plastic blade. The motor spins the impeller forcing water through the spray arms to clean the dishes. If one or more blades has broken off of the impeller the dishwasher is loud. The impeller can also scrape against the pump housing if it is damaged, warped or bent.


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Circulation and Drain Pump Motor

If the dishwasher is loud during operation, and the noise is a continuous drone similar in speed to the motor sound, it's likely that the circulation and drain pump motor bearings have failed. Once this happens the motor will have to be replaced, the bearings are not repairable.


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Help me find my model number


Water Inlet Valve

The water inlet valve is an electrically controlled water valve. When it is new, the water inlet valve is very quiet. Over time, the diaphragm inside the valve deteriorates and deforms. This deformation interacts with the water rushing in and can cause a loud vibration, buzzing, squealing or other noises. If the dishwasher is loud during the filling cycle, replacing the water inlet valve may solve the problem.

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May 24, 2013 | Dishwashers

1 Answer

Sudden loud vibration from the door of my Whirlpool dishwasher. Replacing the part didn't help.


see this causes and fix it. God bless you
Drain Pump If the dishwasher is loud during operation, the drain pump might be defective or might have some debris in it. This is a common problem.
Circulation Pump If the dishwasher is loud during operation, and the noise is a continuous drone similar in speed to the circulation pump sound, it's likely that the circulation pump motor bearings have failed. Once this happens the circulation pump will have to be replaced, the bearings are not repairable.

Drain Impeller If the dishwasher is loud during operation, the drain impeller might be broken, or there might be debris in the pump. Generally, to gain access to the pump the top of the pump housing will have to be removed.

Pump and Motor Assembly If the dishwasher is loud the motor bearings, drain impeller or wash impeller might have worn out. All three of these components are part of the pump and motor assembly. It may be possible to replace one of the impellers, but the motor bearings cannot be repaired. In that case the pump and motor assembly will need to be replaced.

Wash Impeller The wash impeller is a small, plastic blade. The motor spins the impeller forcing water through the spray arms to clean the dishes. If one or more blades has broken off of the impeller the dishwasher is loud. The impeller can also scrape against the pump housing if it is damaged, warped or bent.

Circulation and Drain Pump Motor If the dishwasher is loud during operation, and the noise is a continuous drone similar in speed to the motor sound, it's likely that the circulation and drain pump motor bearings have failed. Once this happens the motor will have to be replaced, the bearings are not repairable.

Water Inlet Valve The water inlet valve is an electrically controlled water valve. When it is new, the water inlet valve is very quiet. Over time, the diaphragm inside the valve deteriorates and deforms. This deformation interacts with the water rushing in and can cause a loud vibration, buzzing, squealing or other noises. If the dishwasher is loud during the filling cycle, replacing the water inlet valve may solve the problem.
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Sep 28, 2012 | Whirlpool Dishwashers

1 Answer

Loud sounds


Many Frigidaire dishwashers come with the promise of being the "quietest dishwasher in its class," according to Frigidaire. However, a quiet dishwasher doesn't necessarily mean that the dishwasher is silent, as some noises are normal. It can take some troubleshooting at times to determine if a noise coming from the dishwasher is typical or if it indicates a larger problem Listen for the sound of water filling and draining throughout the wash cycle. These sounds are normal and do not indicate an issue.

  • 2 Pay attention to the drain motor, which operates at the beginning of each cycle. This noise should be fairly quiet and should not sound like a loud, grinding or banging sound.
  • 3 Note that the sound will change when the wash cycle moves between the lower and middle spray arms. This sound should be temporary and fairly quiet.
  • 4 Look for hard items in the dishwasher grinder or filter if a loud crunching, buzzing or grinding sound is heard. The dishwasher can typically grind up these items within one or two cycles, but the item may be lifted out and discarded to eliminate the sound.
  • 5 Remove the bottom rack and spray arms from the bottom of the dishwasher if there is a loud noise coming from the dishwasher that does not resolve itself. Look inside for the impeller, which is round and spins. Remove any debris that may be clogging up the impeller or pump.
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    Our dishwasher is making a loud noise during wash cycle.


    if you have a torx 20, and torx 15 screw driver, you an remove the screws from the top plate of the wash motor, and underthere youll see another t15 screw converingthe "chopper" assy, sounds as if a seed, of chicken bone, perhaps apiece of glass hasgottne down there

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    1 week after installation- is very loud


    dishwasher less then 2 months old was really quiet when we purchased now has a loud vibration noise when water is pumping out.

    Jul 23, 2008 | Frigidaire 24 in. FDB1050RE Built-in...

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    Okay...based on the model number, this is a Frigidaire manufactured dishwasher. If you go to searspartsdirect.com and type in the your model number in the Search menu, you will find a useful illustration under the "Motor and Pump" heading. The drain pump is listed as item #60 in the drawing. Before you go through any major dis-assembly, check to make sure the pump is securely in place and not loose. Sometimes the pump comes loose from the mounting bracket and vibrates. Also, sure nothing is laying against it causing vibration noises (I've seen this before). If the solution is not that simple, remove the spray arm assembly inside the dishwasher and inspect all the debris traps under the spray arm assembly. The wash pump and drain pump sumps are located here. Check to make sure there's nothing obstructing the input to the drain pump. Lastly, if all else fails, remove the drain pump and inspect the impeller. If the you've inspected everything and still have the noise problem, replace the drain pump. The motor could possible be failing. The part number on the Sears website is 154580301 and costs about $40. Repairclinic.com has the same part listed as item #1257094 for $37.50 if you wish to do some comparable pricing.

    I hope this helps you. If you need further assistance, please post back and let me know.

    PS Even the quietest of all dishwashers will make some noise. However, if it has gotten to the point where you can hear it in the next room, you probably need to inspect to find the source of the problem. This is not true with all dishwasher manufacturers, but in many cases, the only difference between your "Quiet-Pack" line and regular low-end models is added insulation behind the door and lower panel to help quieten noise.

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    Diswasher motor making noise during wash cycle


    It could be the impeller on the motor. The impeller fits over the shaft of the motor and might have split/broken up. That funny noise is probably the shaft spinning inside the damage impeller. Fortunately the impeler is fairly inexpensive and easy to replace. I believe there are one or two parts/covers to remove that are held in by a roughly half dozen torx screws.

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    Loud grinding noise when washer is draining


    something in the impeller housing. not usually serviceable. not sure if that unit has two pumps. you could look underneath the tub and try to determine that, and where the noise is coming from.
    i am confident the issue relates to a pump unit.
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    mark

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