MDB421RFR0 Frigidaire Dishwasher - Instructions

My daughter held the flashlight steady as a rock as I hooked not one, but two new hinges in place. Throughout the whole ordeal neither of us complained or lost our resolve. We conquered!

First point of leakage was the door. Turns out that a gasket at the bottom of the door functions as a wave trap. As the bottom sprayer spins it sprays against the door and creates a small wave of water this gasket was starting to disintegrate, it was letting water surge over the small tray at the doors bottom. Easy to replace just pull down and remove press fit on inside door bottom. Only when this was replaced did I find the real leak but not until I guessed at the tub seal as the leak. Very hard to see where the water really comes from! Turns out it was not the tub seal but a clip that holds the heater element got smashed down from a dropped dish rack at some earlier time and this caused the heat to increase at the clip and eventually heat the clip to extent it melted the tub directly under it. JB Weld to the rescue and we have a waterproof tub again. Well almost! The tub gasket resisted my best efforts to seat correctly and thus required a new tub gasket, still hard to seat but after 2-3 attempts we have a winner. Total cost about 50 bucks vs. 6-700 for a new unit. Wife is happy!!

It was super simple. I popped the clips that were holding the old spray arm on and then popped the new one in place.

I read the instructions that others had posted and completed the repair in less than 5 minutes!

Pulled old gasket off with small hook. Replaced new gasket by pressing in with my fingers.

I removed the kick panel at the bottom front of the dishwasher. Then using a flashlight and a cross point screwdriver, I removed the thermostat from about the middle left. It requires a short screwdriver, but not quite as short as a stubby. I unplugged the wires, noting that one of them was a little burnt looking. The burnt looking connector was still okay. I then installed the new one, with the green dot on the thermostat having the slightly burnt looking connector. Then I ran a load of dishes and the dishwasher worked as it was supposed to. It has worked okay twice since then.

1 Removed 2 screws to remove door panel so as to access back of dispenser.
2 Unplugged 2 color-coded wires attached to dispenser
3 Removed 6 screws attaching the dispenser.

Reversed these 3 steps to install new unit.

Easy. Don't even think of calling the repairman.

After moving the dishwasher out from the cabinetry, I removed the screws holding the pump in place. Pulling the pump from the formed plastic opening, I found a toothpick lodged in the pump housing. At the same time I noticed that the front o-ring was deformed due to being the incorrect size (too large). It was installed at the factory this way.

I went online to search for new parts. PartSelect was the second or third listing on the search page. I submitted the dishwasher model number and was taken to a set of parts illustrations. I was easily able to find the o-rings I needed.

turned off electricity, pulled dishwasher out about a foot, turned off water too dishwasher, removed inlet valve and replaced it with new.

This repair project was easy enough that my 15 yr old son had it almost all done without me. The hardest part was getting the wires unplugged from the old latch. Once we got the pliers out to help us get a grip, everything went smoothly!
This was a quick and easy fix for an older dishwasher that still works!

Removed 6 phillips head screws that hold the front panel in place...let the panel hang in place...then remove 2 torex screws that hold the handle to the dishwasher ( # 25 torex screw driver needed ).......then pry the wire connections off the old handle..remembering where they go on the new latch.....and reverse the process for the new handle install..and for the gasket just follow the inst's on the sheet that comes with the kit..very easy...but when you close the dishwasher with the new gasket..it's going to be very hard to close..( well for me it was )for the 1st few times...

Viewing the instruction video provided online made my repair process extremely easy. Only thing that held me up was finding a tool to help me remove the torque screws from the latch. Thank goodness for inheriting my grandfather's tools and eventually finding the right bit. The latch came with a new gasket but I recommend not replacing it if it's not necessary. I did replace ours at first but it was too thick and caused our dishwasher to leak. So I placed our original gasket back after cleaning it up and it works just fine. This wife was able to complete this project with two kids under the age of 4 and a hyper border collie running around while the husband was at work.

Completly disconnected and layed dishwasher on its side for better access. New valve support was 1 inch longer than original but created no problem. it took no more than 30 min. to complete job.

Removed the two screws that mount to count top pulled the dishwasher out to see how the spring was attached , installed the new spring and the job was done the job it took about 15 mins. to complete.

Easiest repair EVER!!! You just pull the old spray arm off (be sure to keep all the smaller pieces that click it into the bottom of dishwasher) and pop the new one in. Done!