Dishwasher fixed, need new Furnace!

Got the dishwasher put together last night after getting the correct $12 part locally. The girls will be happy to have an easier time of washing the dishes!



The furnace man came today, confirmed the freon leak is in the coaxial coil, leaking into the water system. As the furnace is 15 years old, they suggest the only alternative is to replace the whole furnace (which they'll be happy to do for $8700).

AAAARRRRGGGG!!!!!

Now it's the dishwasher!

At 3am today the dishwasher broke. When it began the discharge cycle, it started making a humongous racket.

We have a Maytag MDB7100AWQ, serial 24135498YZ. The handle of a pot prevented the bottom rotating arm from spinning, and I think it ground some plastic nubs off the bottom side of the Discharge Housing Assembly.

Under this Housing:


I found a flat disc that looks like it is to act as a slip-clutch with tabs on the bottom of the impeller:


What I'm wondering about, is this really a problem (and the shortened tabs mean I need to buy a new part) or is this by design and I need to look for the source of my grinding noise elsewhere?


When I assemble the unit without the flat disc and run the drain cycle, it is rather quite, so I really think this is the problem. Might be I need one of these: