Question about Maytag 24 in. MDB9750AW Dishwasher

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Maytag dishwasher legacy 300 quiet series

Maytag dishwasher sounds as though it has 'grinding' during cleaning cycle.  either it is unable to dispose of a harder than food like item...or what?

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  • Dianka Feb 17, 2008

    We have had this Maytag Quiet Series 300 dishwasher for 3 years now without a problem. Now when we try to get it to go through a wash cycle it sounds likes it grinding and no water is coming out through the wash cycle. The dishes are "hot" and the drying cycle was activated, the dishwashing detergent "flap" is open and the detergent is spilled on the inside of the door but the water never cycled through.

  • J Mark Feb 17, 2008

    My dishwasher sounds like it's laboring as it washes. The labored sound is there
    immediately after starting the wash cycle. Originally we would hear a
    rattling sound at times during the wash cycle but that eventually
    stopped. I took the spray arm apart in the bottom of the dishwasher but didn't find anything unusual. The labored sound definitely was not there for the first several months of operation. I don't know where else to look....

  • Dideben May 27, 2008

    Help! My maytag 300 has been making that nooise for quite a whiile now...now the dishes are still dirty when it is done cleaning and the soap is still sitting in the dispensers. Don't know what to do!?

  • LainiMarie Jun 07, 2008

    It is quiet when it is heating the water. As soon as the water starts to fill it starts this labored grinding noise. I have not let it finish a cycle.

  • Anonymous Oct 08, 2008

    We have had our Maytag for several years now with no problem. Now when we try to get it to got through a wash cycle sometimes no water comes out. The detergent flap is open and the detergent is spilled on the inside of the door but the water has not cycled through. What might be the problem??



    It is Model MDB6000

  • horsepower7 Oct 15, 2008

    I have had the dishwasher for around 3 years and in the past 2 weeks it started making a grinding noise after it fills and starts running. It is washihing nicely but the noise is getting louder as the days go on.

  • fracton Nov 05, 2008

    I had the dishwasher about a year and half. First it started making more noise than normal. Then it began to make a loud grinding noise.

  • c2bburton Nov 17, 2008

    My Maytag Quiet Series 300 started making a clicking noise like something is rattling round in the motor or bottom sprayer arm. Now its buzzing every few seconds. Any solution beside sending in that lonely Maytag repair man?
    After reading the manual it looks as though there may be something hard in the internal garbage disposal. That's what the clicking noise sounds like, like when you get a bone down in the garbage disposal. Any help in know how to open the garbage disposal?


  • titoman Nov 27, 2008

    my maytag is making this weird noise that sounds like it grinding. its loud and i would like to fix it

  • medinac13 Dec 22, 2008

    MY MAYTAG DISWASHER LEGACY 300 sounds like it's grinding, how do I disassemble and find the problem?

  • boxerbulldog Jan 25, 2009

    Maytag dishwasher 300 quiet series.....sounds like grinding sometimes and buzzing. any idea what to check for? thanks

  • Tim Carlin
    Tim Carlin Jan 15, 2014

    My maytag's handle broke and i replaced it. The machine is now having a high pitch wine. What could be the problem?q

  • Pat Bosiger
    Pat Bosiger Feb 26, 2014

    I found u tube more helpful.

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I was so impressed with the advice on this website, I thought I would take a stab at this. The difference is, I will include all the steps, so if I go into a little too much detail for you, I'm sorry, but I felt a few things got left out that needed to be said.

Tools Needed: screwdriver with t-15, and t-20 torx bits (available at any hardware store), and a pair of pliers. Also I used a headlamp so I did'nt have to hold a flashlight with my teeth.

step#1- Clear a spot on your counter or kitchen table and remove both the lower and upper racks from your dishwasher. The lower rack just lifts out, the upper you will find two light blue plastic caps that once removed will allow you to slide the rack off of the metal slides. Next, the long L shaped spray bar that goes up the back and across the top needs to be un-clipped and removed, 2 clips at top and 2 clips at the back. It might take a little wiggling but that spray bar slides into the top cover, once unclipped push back at the bottom and tilt the upper part toward you, it should come out fairly easily and give you wide open access to the cover. Next you want to remove the plastic nut that holds the spinner in place, using your pliers turn it counter clockwise, it should loosen fairly easily, and remove nut and spinner. Next with either a T-20 or T-25 torx bit, remove the 3 screws that hold the outer cover in place, notice the direction of the tube that plugs into the spray bar, make sure it goes back in the same way. Now remove the T-15 screw that holds the black grinder cover in place and remove screw and cover. Now remove the 6 screws that hold the inner cover in place and remove the cover. You can now see what all the fuss was about, mine included a piece of pistachio shell, a bay leaf, and a cherry pit. Once it's all cleaned out, just reverse these steps and be ready! You have just earned your place as your homes resident handyman or woman!

Posted on Jun 14, 2010

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  • blurryeyedmom Feb 02, 2012

    Thank you for posting the details. My 1st attempt I couldn't figure out that the L spray bar could be snapped out of the clips. On mine, I found two additional screws after the inner cover (6) before I could remove the final cover below the grinder. My culprit was a thin piece of plastic smaller than ones little finger nail and a small plastic end cap (still not sure what from). It's nice not to hear the grinding sound anymore, and not to have to call the repair per$on!

  • andyro Jun 05, 2012

    Thanks you so much. Fantastic details. It's so quiet now that at some point I thought that it wasn't working.

  • keirn May 27, 2014

    We did all of this and it seems there is a screen that can have hard water buildup. Can't clean hard scale from between the screens. Any other suggestions? Also have used that hard scale remover (can't remember the name).

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I have Model MDBH970AWW Quiet Series 300 Maytag dishwasher, started making a strange and sudden sound that wasn't "normal" Took out my six-sided (not Philips) tool, removed spray arm by hand, eventually got to the bottom of the tub (remember how and where all the screws go and in what order). I found a small nail, and a tooth pick which must've been moving in a circled fashion, all the while "chipping" away at the black gasket, hence the black floating particles or stuck to the sides of the tub. Granted the tooth pick must belong to my husband, but the 1 inch nail - dishwasher came with house and was 2 yeats old at the time. At any rate, these were removed and all the dirty food-filled water was removed. Apparently the tub hasn't drained 100% everytime. At any rate, the washer now runs quiet as it should and smells as good as new. DMA

Posted on Nov 02, 2007

  • 5ilver5urfer Jun 30, 2012

    Awesome repair notes this worked great found plastic pieces of fork melted in bottom section

  • HandyGal Jan 04, 2013

    Very helpful solutions. I was curious to see what ours had collected over 6 years - 2 wooden matches, a pistachio shell, a b read bag closure, and a rubber tyne tip. Actually, just noticed the other day the tip was missing. The picture taking did help in reassurring me in the reassembly. Awesome fix!

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FYI... I followed Miss Midget's steps... and there it was... a piece of plastic... actually one of the end caps from the rack. Poor design if you ask me. So for all you "grinders" out there, it's an easy fix... just need the appropriate star screwdriver. It went back together easier than it did taking it apart. Thanks.

Posted on Nov 28, 2007

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If you take a series of photos with your digital camera as you dismantle the dishwasher ( or whatever ) you can see where the parts go when re-assembling things

Posted on Dec 06, 2007

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Like they all said...removed the arm( small cap nut-removees CCW as any usual nut), the plastic cover (3 larger screws), then tipped it back enough to remove the inner top cover then unscrewed the black impeller (small circular thing with 
one screw in the middle) then removed the bottom plastic housing.  At this point you can see the cutter blade and the channel which will have the junk floating around causing the problem.  I found a rubbewr foot off a cutting board and a plastic piece of a bird feeder.  Shocks me that this little stuff made sucha hugh sound.  Be sure you get it back in the same orientation.  The bottom plastic must align to the drain in th erear...mostly if the screwsa align then it is right.

Don't let this scare you...easy.  Just don't rush and over tighten the screws.

Ray    rayhubb@gmail.com

Posted on Jul 06, 2008

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I cannot program a time delay all of a sudden. Couldl it be that the switch has gone bad. Is this an easy fix

Posted on Sep 06, 2009

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Thanks for the tip! Same grinding issue on my Maytag Quiet Series 300. Easy to disassemble, but I had to do it twice! First time, I found a flat plastic bread package clip and thought, "aha"! But when I re-assembled it, same grinding sound. Disassembled again and found two other small wooden pieces I hadn't seen before, reassembled and "voila"! Back to quiet. So a word of advice - when you're in there the first time, look hard to make sure you find all the foreign matter!

Posted on May 23, 2009

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Miss Midgit's steps were great - however, if you un-clip the "arm" from the back and top - goes faster. After it is unclipped, tilt it forward. Found broken pieces of black plastic and a Corelle sticker - we don't own any.

Ran a test run and it still stopped at 38 minutes. Husband asked what the High Temp Wash was - did not know and did not set. Finally figured out that once it gets to 38 minutes and water temp is not high enough, it stays at 38 until water gets hotter, then goes on it's merry way to count down.

Posted on Oct 26, 2009

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Just fixed my Maytag Quiet Series 300 using the above steps to disassemble the spinning arm and other inside tub stuff and found a screw and a few small chicken bones and such...   That was it- it "sounds" like this dishwasher is succeptible to small particles getting down into the inner workings that cause some noises-maybe common to all dishwashers- I don't know I am not a repair guy- or at least not on most days...today I am as well as totally impressing my wife... Thanks!!!!

Posted on Apr 28, 2009

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The solution works perfectly. I found a large plastic piece and a few other pieces of junk. The whole repair took about 40 minutes.

Posted on Nov 05, 2008

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Maybe stupid question, but do you have to cut off the power supply when going inside the dishwasher for a problem such as this?

Posted on Mar 01, 2013

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Please help! Can't get clips to stay on back and top of dishwasher when reassembling! thank you!

Posted on Dec 01, 2012

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This solution "sort of" worked for me. I took apart the lower assembly and unfortunately found that my impeller was damaged and the plastic pieces that were causing the occasional noise were actually from the "neck" of the impeller where the screw held the impeller in place ... so I have to order a new impeller to see if this totally corrects my problem but I'm sure it will - I'll report back in a few days when my kitchen "project" is reassembled with the new part (appliancehelp.com and appliancepartpros.com were two of the better sites I found that actually included diagrams of all the parts in my appliance on their website - and I ordered for them as well).

Posted on Jun 28, 2012

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Thank you Miss Midget! I loved being able to fix it my self instead of having to bug my husband when he got home with another project!
ps - digital camera idea was awesome - I took a pic at each step!

Posted on Aug 07, 2008

Same grinding sound issue on my Maytag Quiet Series 300 MDB5601AWW. This was a relatively simple fix with a couple of Torx bits (T-20,T15). Removed a toothpick and a the remains of a couple of rubber feet from my cutting board. Working fine now.

Posted on Mar 30, 2008

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Thats interesting.. i just pulled a nail out of mine also...
Not one of my nails... weird looking small gauge but long. They must be leaving these things inside.

Posted on Jul 10, 2008

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