DU4099XX0 Whirlpool Dishwasher - Instructions

I poked the old gasket with a fork tine so I could get a grip on the old gasket as I didn't have pliars, pulled it out in less than 4 seconds, folded the new gasket in half and started center top of the slot the old gasket was in and pushed the new gasket in on each side from the top to the bottom. Very easy. I'd say it took me longer to open the package with my teeth than in doing all of the above.

Disconnected hoses (2) from pump housing. Disconnected pump housing from motor (3 allen screws, not too acessible). Unscrew spray arm from pump housing (this is done by hand; no tools as the "nut" is about 3" diameter and made of plastic) Open up the pump casing and replace impeller and the bearings on each side. The thing that takes some time is to mop the water that comes off at almost each step. There is probably an intelligent way to drain everything first. I did not order the large seal (kind of a large rubber donut, larger than a donut) between the arm and the pump and I shoiuld have as it was difficult to keep the old one from not leaking: Since by hand you cannot tighten the large nut very hard and tools could damage or break it. Applying upward pressure on the pump while tightening did it. (The pump and motor are all mounted on flexible mounts, like the heavy hoses connecting to the pump housing, so that there are no vibration.)

Getting the dishwasher out was easy. Getting to the impeller was easy. Getting the impeller off of the motor shaft was the difficult part. I had to use my Dremel tool with lots of cutoff wheels to cut the impeller off of the motor shaft a little piece at a time. It appeared to be rust on the motor shaft that was causing the impeller to not come off. There is not much room for the Dremel so be careful not to nick the pump housing or cut into the motor shaft. Keep the vacuum close by to clean out the plastic impeller shavings. Clean the rust off the shaft with steel wool, fine sandpaper etc. Assembly was easy once everything was cleaned up.

Both springs (8066018 and 3368999) were replaced as recommended in your troubleshooting guide, but did not resolve the problem. Finally the Dual Motor, 3374501, was replaced. During the above, the plastic face of the door fell off, which created a nuisance task before proceeding to fix the original problem. However, while replacing the motor, I realized the purpose of the two, T-shaped studs sticking out of the motor. It is absolutely necessary that these sit inside the slots which engages the sliding plastic cover, which is spring loaded, in order to engage the release of the soap dispenser door. It was truly a learning experience, but I got it done.

I USED A PLUMBER

had to replace the insides of a leaky pump

After cleaning the filter located on top left of door(used a screw driver to pry out) and following the install gasket video problem solved.

The brackets that held the original wheels were still on the rack. They were easily pulled off the rack. The new assembly did not look like the original part. It was not difficult to see how they fit onto the rack. The only caution is to press the top part of the new assembly onto the frame before snapping the rest of the new piece into place.

I snapped the old ones off & snapped on the new ones. It couldn't have been easier!

i used a screwdriver to pry off the old wheels then snapped on the new ones.
This was the easiest repair I have ever made on an appliance.

All pieces just snap off and the new one just snap right back in place.

Remeber take a little time to do your repair correctly.

It is cheaper to repair an appliance than it is to replace.

We read your help site and was able to find what was causing our water filling probelms. Order the valve intake part and made the repair and the dishwasher works like new. You saved us a repair bill from the professionals and they couldn,t done a better job. I will recommand to site to everyone. Thanks Again

After getting the pump and motor off of the dishwasher, I used a screwdriver and small hammer to break the impeller off of the motor shaft. The shaft was corroded and pitted real bad but this doesn't matter because the shaft of the impeller actually goes through the seal. I removed the old seal and replaced it, slipped the new impeller back on the motor shaft and put the pump and motor back on the dishwasher. Our local repair man told us it couldn't be repaired and we needed a new dishwasher. I had the parts from Part Select in 2 days. The parts were less than $35 dollars and repair very simple. The person on your comment section on how to fix it that said to break the old impeller off of the shaft made the job very simple.

I prayed old wheel assembly’s off with the claw end of a claw hammer. Carefully snapped on the new assembly’s which were a little tricky to align. Went well, took about 15 min.

It took all of 30 minutes from beginning to end remove the old parts and replaced them and run a diagnostic test before I could wash dishes. The parts were exact and Parts Select has always provided the right parts, shipped fast and never disappointed me.