Kitchenaid Dishwasher Buzzing

[jchrisa]

Have a Kitchenaid KUDP01FLBL2 dishwasher several years old. Made grinding noises for a couple of minutes when starting last time, the grinding noise stopped and then made a moderately loud buzzing noise.

I disassembled to the chopper and removed a 1" long bone and re-assembled. Ran it through a full cycle and appears to be running fine but it still makes a buzzing sound when it is running (stops when draining). Any ideas? Thanks for your help!

[HayZee518]

check the plastic piece above the macerator blade. the bone could have bent one of the struts down so it strikes the macerator blade making a noise.