Questions and Answers for Whirlpool 99001788 Lower Washarm

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Hi, both my washer arms won't rotate. Everything I can find online says there is a clog somewhere and I don't have enough water pressure but motor is good and I seem to have plenty of water pressure. I have disassembled pump/pump housing all the way down and cleaned everything out and can't find any clogs, filter is clean. Both impellers are in good shape. I figure I either need to replace the wash arms or some of the pump housing parts at this point. Any guesses?

Marc for Model Number maytag mdb4030awb

Answer Hello Marc. Make sure the water level is high enough. Should be up to the bottom of the heater. If not, replace the water valve. Also, you can clean the spray arms on the unit.

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I had my dishwasher repaired and the lower spray arm was replaced. The replacement part split. According to the repairman there has been an ongoing problem with this part. I've been waiting six weeks for this part and want to know if the problem with the spray arm has been resolved. I'd order the part myself if I knew it would work. Thank you

Richard for Model Number mdb4000awb

Answer Richard, We here at APP are not aware of an "on going" issue with the 99001788 lower spray arm. There was an issue, approximately one year ago, but the manufacturer remedied that, almost immediately. Please contact the APP Customer Service Team, with your previous order number and information, so we can get you up and going. Thanks

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Note: This question is for the older version of this part, but we thought you might still find it helpful

How to remove dishwasher filter under lower spray arm

Barbara for Model Number Maytag dishwasher DWU9202AAB

Answer Hello Barbara. Unscrew the nut in the center of the washarm and lift off the lower spray arm. Then remove the screws out of the cover and lift off the cover. Now you can lift out the filter 99001791. Hope this helps.

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Note: This question is for the older version of this part, but we thought you might still find it helpful

I have same issue, wash arms don't spin during cleaning process but water level is at heating element. Filter is dirty. Could that be the issue?

Mike for Model Number DWU9302AAE

Answer Hello Mike. Yes, if the filter is dirty, the water does not go back into the sump and it will not spray. You need to clean the filter first. Thanks.

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Hi, Do you need any special tools to remove the wash arm cap AP4114625 Thanks, Vin

Vin for Model Number MDB6000AWA

Answer Hi Vin. No, you just unscrew it and lift it up. Then you can unsnap it off the filter guard to use a pick tool to clean out all the jet holes that get plugged and effects cleanability. Thank you.

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The wash arm is clogged and I want to replace, how do I get the old clogged wash arm off?

Glynn L. for Model Number MDB4000AWX

Answer Glynn, Your pretty lucky, it's an easy change out. Remove the lower rack, and unscrew the wash arm nut and nozzle 99001428 remember the nozzle orientation, so when you re install it, it has a specific orientation. slowly and carefully lift up on the spray arm and cover assembly. Unsnap the spray arm from the cover. reverse the procedure and test the unit for operation. Thanks and Good Luck.

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Note: This question is for the older version of this part, but we thought you might still find it helpful

The wash arms don't want to spin during the cleaning process. They freely spin when I open the door and spin them but they don't while in the wash cycle what do I do?

Trina for Model Number DWU9202AAE

Answer Hello Trina! You will need to make sure that you have the correct amount of water entering the machine. Once filled, the water should be right at or touching the bottom of the heating element. If you do not have the correct amount of water, you will have some sort of filling issue with your valve. Your valve is part number 99001359. Check this and let us know!

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I washed a meat scissor in the dishwasher. One of the lock pins came off in the dishwasher. Can't seem to find it in the tub. It probally is in the filter tray. I want to remove it before it gets into anything. Want to remove the washerarm, lower screw, seconary, shield, & filter guard, to get to the filter. How do i get the arm off?

Mim for Model Number MDB7100

Answer Hello Mim. You will need to unscrew the wash arm cap 99001428 to remove the lower spray arm. Once removed, the spray arm will lift off. Hope this helps.

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Lower Washarm

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