KUDS35FXBLA KitchenAid Dishwasher middle arm not rotating.

[Tim C.]

Model Number

KUDS35FXBLA

Brand

KitchenAid

Age

6-10 years

The middle spray arm does not seem to be spraying or moving during any cycle. Thus the dishes in the top rack not rinsed well. I have cleaned the sump and replaced the chopper. Also replaced the pump impeller. There are no blockages in the spray arms and the water level is good. I can heard the water sloshing about and the bottom always comes out clear. No error codes.

I am considering replacement of the water supply tube (WPW10077859) or the spray arm assembly. However the ones installed seem to be ok. I did purchase a new pump but I may send it back. The current one seems to be working.

Any and all help appreciated.

 

[Jake]

Hi Tim, Check the lower flapper in the water feed tube first, it should be completely closed.

Here's the water feed tube assembly for your model:
WPW10077859 Feed Tube Assembly


Look at post #3 here:

FIXED - KitchenAid (KUDT03FTSS0) Question Regarding Feed Tube with Third Level Spinner

I have parts out of my dishwasher for cleaning and/or replacement. My feed tube (with third level spinner) is currently out of the dishwasher. When holding this part in my hands, in its naturally oriented mounting position, I see that the top rubber flap is completely open and the lower rubber...

www.applianceblog.com

Jake

 

[Tim C.]

The upper flap is open and the lower appears closed.

 

[Tim C.]

Here is a better pic. It is used with the upper rack raised so the upper flap should be open.

 

[Jake]

Looks good.

If you cleaned out your sump basin and chopper screen, did you also check the black rubber check valve flapper? That should not be curved with you pull it out and should not be obstructed.

Watch this video below:

Jake

 

[Tim C.]

Yes pulled the flapper valve and made sure it was intact and flat.

 

[Jake]

Ok, then if the water feed tube is not broken, cracked, or clogged then I doubt that will fix it.

Did you check the middle spray arm manifold tube to see if its broken, cracked, or clogged?

Water Supply Tube WPW10323424


Other than that, the only part that can cause this problem is the wash motor itself, if the machine has plenty of water in it, normal water level would be about a few inches below the heating element.

Here's the wash motor assembly for your model:
WPW10757217 Circulation Motor


Jake