spray arms do not spray

[hookcapn]

I have hard water and have started using 'Dishwasher Magic'  Amazing stuff.
I recently noticed food debris on some dishes.
When the arms stopped spraying, I started to trouble shoot after checking the manual on this site.
Results:
First filter was packed solid. could not readily remove it  to clear but after hours finally cleared this area.
Diagram was not clear on the names of parts nor on what they should look like.
I also chipped away mineral deposits from other removed parts. Wow almost a pound.
I reassembled ( manual was less than helpful here) and tried DW with no arm spray.

Any suggestions?  

Model MDB7600AWW

[Repair-man]

Here's the manual for the Jet Clean II dishwasher. Please review the information and ensure that you have reassembled the pump and upper housing correctly, including the 2 white rings that act as gaskets under the lower spray arm.


Also be advised that if your water valve is not filling the tub to the heating element as it should, the unit will not have any force of water thru the wash arms. Replace the valve if so.

[hookcapn]

I assume that my objective is to clear any obvious debris.
Then reassemble to test.

[Repair-man]

Good assumption! Again, pay heed to the 2 things I mentioned that will impede wash action.

...ensure that you have reassembled the pump and upper housing correctly, especially the 2 white rings that act as gaskets under the lower spray arm.
... if your water valve is not filling the tub to the heating element as it should, the unit will not have any force of water thru the wash arms.

[hookcapn]

I have taken apart again
Cleared some nominal mineral deposits down to chopper blades.
I can twist the shaft and it does not appear to have any damage.
Is it necessary to pull motor up and out?
I cleared a mineral stoppage in the overflow pipe in the manifold (now water is flowing readily there.
When I first tested the DW this AM there was water coming through the lower arm about 3 inches high.
It then stopped and when I just retested there was no water coming through the arm.
As to the two points you mentioned, the water does touch the heater element however there were no "white washers" under the lower arm.
I appreciate your suggestions, where to from here?

[Repair-man]

You need to replace the wash impeller seal assembly. The base of it has likely stripped and is not turning with the shaft of the motor. This is best done with the motor removed, as you have to insert a screwdriver into the base of the motor to hold the rotor still so you can unscrew the old impeller and seal assembly. Maytag has changed the impeller seal to a metal type instead of the cheap plastic one it came with originally.

[hookcapn]

In searching for part mentioned, I located a "wash impeller assembly" #1011977.
There was no mention of "seal". Is that a separate part?

The manual mentioned that the impeller can be used as a "wrench" to hold shaft. Do I still need to lift out motor? So far I have not lifted the motor out.

I feel that I am getting closer.

[Repair-man]

Do you also know that I'm a Maytag factory trained technician? (Many years with them)

If I recommend pulling the motor to do the repair, you can take it to the bank that this is the easiest way. It takes 30 seconds to release the motor and raise it out.

The part you want is the 99003341 seal & chopper assy. Wait till you have the part in your hand, as it comes with a very good instruction sheet (also mentions removing the motor)

[hookcapn]

I did not know you were a Maytag technician.

Thank you for the reassurance. I get cautious when a seal is involved. If it does not have to be broken, I don't.  If it must, I will.

I have ordered parts and will keep you informed for courtesy and benefit of others.

I still marvel at the amount of mineral deposits.  I hope my own parts are not as loaded.

Thanks for the quick responses.

[hookcapn]

TA  DAA!!!!!!!!!!!!

Dishwasher is working again.
It is clean as a whistle and I will continue a regimen of "Dishwasher Magic".

Thank you "Repair-man"

The innards are no longer a scary proposition.