Our dishwasher began making a fairly loud noise recently while it is washing and rinsing. The dishes appear to be clean and undamaged once the wash has gone through its entire cycle. But the noise is quite loud and disconcerting. I have taken the parts out down to the scraper/screen assembly and cleaned them out but the sound persists. Any Ideas what might be causing the persistant noise.
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Our dishwasher began making a fairly loud noise recently while it is washing and rinsing. The dishes appear to be clean and undamaged once the wash has gone through its entire cycle. But the noise is quite loud and disconcerting. I have taken the parts out down to the scraper/screen assembly and cleaned them out but the sound persists. Any Ideas what might be causing the persistant noise.
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I have the exact same problem. Bought the dishwasher for about 1-1/2 years. Before it was really quiet. I doubt plastic nozzles inside are getting worn.
youngking,
Did you remove any parts from the pump to check for a foreign objects inside?
Gene.
Thanks Gene. there was no foreign objects in the pump.
I removed dishwash motor & its assembly and found there had been small leakage from the pump shaft to the motor bearing. The motor bearing close to the pump side was badly rustic. I cleaned and lubricated the bearing. It runs smoothly after lubricating.
I almost decide to change out the whole motor assembly. Luckily the bearing was not damaged, otherwise would cost $200 to have new motor assembly.
Did you fix the leak?
Gene.
I pulled the scraper assembly out, cleaned the screen, Removed the motor and pump volute assembly, removed the impellor and found a pile of corrosion/debris on the outside of the inboard motor bearing. I removed the bearing and found it to be dry and rough. I cleaned it up and repacked it but the bearing is too far gone so it still makes the noise. I am hoping to be able to get a replacement bearing and seal kit. Maybe I will have to buy the motor pump assembly. Any other thoughts. Bearing is an NSK 608D16.
bowser said:
…I am hoping to be able to get a replacement bearing and seal kit. Maybe I will have to buy the motor pump assembly…
Unfortunately Whirlpool does not sell just a bearing. You have to replace the whole motor assembly.
- The part number for the motor assembly is AP3179652
Gene.
I went to the local auto parts store where I live and gave them the bearing #and they found a match in an RBL roller bearing 6082RS, It cost $1.77, I used a propane torch to heat the alluminum motor housing a bit to get the old bearing and rotor out of the housing and I had to cut the old bearing off the shaft with a dremmel rotary tool. With the replacement bearing installed the motor runs smoothly and no more noise.
We are glad you were able to fix it. Good job.
Gene.
Whirlpool and contract buyer-resellers like Sears Kenmore know the seal they’ve been using between the circulation pump and its driving electric motor have been failing at a VERY high rate for years, yet they have not replaced that seal with a better design nor adopted a 2-stage seal. Worse, they know that when (not if) these seals fail, the motor shaft they have been using is rust prone and the roller bearing they have been selling is also rust prone. Given that these machines sell for hundreds of dollars, for very little more production cost, they could have used a stainless steel, motor shaft and a stainless pump-side bearing. That would have GREATLY improved these machines. If you are replacing the pump-side motor bearing, so spend a little more to get a stainless steel bearing. Bearing numbers start with 608 and have 22mm overall diameter, 8mm inner diameter, and 7mm wide.
John
I have the same problem. Have removed the motor assembly. I don’t see anything that would indicate it’s a rusted bearing. The shaft seems solid. I would expect it to ‘wiggle’ – But how can I access the bearing? Sorry, I don’t know which part is the pump. I’m guessing it’s the plastic parts on the motor. How can I remove these from the motor? Do they just pull off?
Thanks John, but how do I remove the pump/impeller from the motor shaft? I can’t tell how they are connected to the motor and I don’t want to damage it.
chinahorse said:
Thanks John, but how do I remove the pump/impeller from the motor shaft? I can’t tell how they are connected to the motor and I don’t want to damage it.
The instructions are attached to the reply.
Gene.
Ok, just to follow up. I replaced the copper pipe with a stainless hose and it completely eliminated my noise problem. It was just a vibrating rigid pipe.
chinahorse said:
Ok, just to follow up. I replaced the copper pipe with a stainless hose and it completely eliminated my noise problem. It was just a vibrating rigid pipe.
Just wanted to say thank you for sharing your diagnosis and repair with us. It’s not often we see a bad noise created by a vibrating rigid pipe, so your post was very illuminating and instructive.
Thanks again and good luck with your dishwasher.
Gene.