Bosch dishwasher rattle, low wash pressure

Dishwasher Repair
1

Our dishwasher makes a rattling noise, and does not wash properly. The soap doesn’t even get fully dissolved. The noise is associated with rotation - it winds down when I power off.

2

Remove all filters and screens inside the dishwasher and clean them. Check for a broken glass inside. If it would not help then you have to pull the dishwasher out of the cabinet, remove the circulation pump and check it.

Gene.

3

Thanks. Do you know where I can get a repair manual or procedure so I can get at that pump? If I even knew where it was, I might be able to reach it from the toekick to be sure that’s where the noise is coming from.

4

The instruction is attached to the reply.

Gene.
How to remove the base from the tank.pdf (190.1 KB)
How to remove the circulation pump.pdf (213.7 KB)

5

I got the pump off and found a two piece impeller. Several pegs in the face of one disc engage several holes in the other, but they come apart easily. Is that normal? If so, it seems I should be able to just put them back together. I tried that, but ran into another problem. The pump won’t go back in the housing. There are 4 sliding tabs, but no stagger or lead-in. Looks like I have to remove the pump housing to to get all 4 tabs engaged at once. Any instruction on how to do that?

6

Do the instructions you provided for the circulator pump also apply to the Bosch shu9925uc/12?

Thanks

7

[quote=hunterdog;125621]Do the instructions you provided for the circulator pump also apply to the Bosch shu9925uc/12?

Thanks[/quote]

Yes. it should be good for your dishwasher as well.

Here are the breakdown diagrams for the Bosch dishwasher [MODEL]SHU9925 UC/12[/MODEL]

Gene.