Product review (5 stars): Try this before calling for service or replacement
We inherited a Maytag Neptune MAH9700AWM washer when we bought our house in 2014. It worked fine for a while but started getting "nd" errors. The first time I pulled the back off the washer and peeked into the drain pump, there was a dark black quarter blocking the intake. I took it out and things were good for a while but the "nd" error would come again and it got to the point where the water didn't drain AT ALL during a wash and we had gotten quotes for a new unit. I took the machine apart one more time and decided the price of replacing the drain pump was worth the gamble versus the cost of service or replacing. We got this part from "Parts4sale" here and it was shipped a few hours later and arrived 2 days later. Install was a couple screws to open washer and a couple bolts to swap out the old part. Two test loads later and no issues.