Greetings esteemed appliantologists!
I am ministering to my Maytag dishwasher, designated MDB7600AWS but known in our household as "The Dishwasher".
The whole story started with dirty upper rack dishes and insidious loss of cleaning performance... I cleaned the heck out of the water distribution system and flow plate/impeller/whatsamajiggy. Only later, by studying the posted wisdom of The Samurai, like I mean *The* Samurai (disclaimer: I am not worthy), did I discover the true cause of this blight upon our house: The Stripped Plastic Spindle.
Contemplating the stripped plastic part, I thought first "ah, how beautiful and subtle is the playing out of the laws of physics in our world... how sublime!". Second, I thought, "I wonder what genius decided to save 20cents per unit on this part" (and, in so doing, sold our land into desolation!!!... as Henry V might have said, upon encountering the same problem).
Seeing the new metal impeller spindle brought a big smile to my face.
So, now that water actually moves vigorously through the unit, two leaks become more apparent:
1) the main door gasket, along the lower left
2) a slow leak about the float stem (not dripping from elsewhere, but actually originating there... I found a lot of detergent crud, meaning this was not strictly new)
I decided to meditate upon #2 at first (water level seems nominal although I understand it could be too high by design... lower spray arm looks ok)
However, #1 was threatening the harmony of our 11-person Christmas dinner, so as an experiment I bought some 1/2 x 1/2" firm closed-cell foam generic weatherstripping at the hardware store and put it in... Surprise, it worked! I soaked the old gasket in vinegar and cleaned it and set it aside, but it does look a bit old and slightly flattened. I have also heard that it can be helpful to reinstall it rotated 180 degrees (so the previously-indented side faces in). I have also read here about shimming behind the seal and it sounds like leaks along the door seal are not uncommon.
May I ask your opinions on the following?
For the door seal:
(1) Is there anything magical about the OEM door gasket seal? It seems rather pricey. I'd intended the weatherstripping as a temporary measure, but maybe I should stick with it?
(2) Does the rotate-and-reinstall trick sound reasonable? (if the rubber is aged, seems like a partial solution only)
For the float stem "leak":
(1) Are the lower spray arm leaks subtle enough that I should try replacing it even if it looks OK?
(2) Should I just lower the water level empirically and see? (by bending the switch arm or whittling down the stem)
Thanks much in advance!
Edited by dkmn, 26 December 2013 - 06:10 PM.