MDB4709PAM1 Maytag Dishwasher - Instructions

My dishwasher motor was getting very noisy lately and finally died altogether. (the fwd bearing and seals had worn out. There was a small pile of what looked like white sand under the motor from the wear) I removed the dishwasher from the counter after turning off the power at the breaker box. I then turned the dishwasher on its side. The pump motor is removed by first removing the electrical connector, then loosening the retaining bolt and twisting the motor counterclockwise about a quarter turn. The gasket required a little force to become unseated from the housing but not to bad. Wiggle and pull! Be sure to take a look at the alignment at this point to facilitate reinstallation.To install the new motor, align the mark on the impeller(small delta) with the mark on the motor. Insert Motor into housing and turn clockwise one quarter turn till retaining bolt hole is aligned. Install retaining bolt. Be sure to note the position of the stainless steel screen where you insert the motor. Place it back in position before installing the pump if it is disturbed. I lubed the oring with vaseline prior to install also. The new oring was diffrent and did not feel very tight when i installed , but there were no leaks and the dishwasher is running like new. Partselect had the part at my door the next day with no upgrade in shipping charges and I will use them in the future. This forum helped me choose them and made the task easier to do. Hope this helps you as well.

unscrewed dishwasher from cabinet ...,moved out slightly....while door closed ...reached with long nosed pliers door spring pulled forward...and allowing white plastic part that fits through sleeve and fit new sleeve over it...pulled spring attaching white plastic part and pushed unit back to cabinet and replaced screws DONE.

Checked grinder and cleaned it several times, adjusted blades. Dishes would be clean for approx. 6 cycles, then would not clean. Placed dishwasher on its front and removed the motor. Removed grinder and impeller which I found to be worn so that the blades would not turn on the grinder which caused it to collect food particles. The impeller locks in easily.

This product comes in a bottle with a brush like Liquid Paper. It goes on incredibly easy. A second coat might be needed. I wanted to prevent rust from setting in so I covered the scratches and dings. The paint is a little brighter since my washer is 10 years old but it still looks great.

1. Disconnect power at the breaker, 2. remove two wood screws fastening the dishwasher to the cabinet and slide the unit out approximately 2 inches. 3. Remove old latch strike and replace with redesigned strike. 4. Slide unit in and reattached to cabinet. 5. Remove 11 screws holding inner panel of door assembly and one screw holding user interface unit to door. 6. Disconnect snap cable to latch assembly and replace the latch unit. 7. Reassemble.

To empty the water in the dishwater basin, I pushed the cancel button and closed the door. I then turned the electrical breaker to the off position that supplies electricity to the dishwasher. I confirmed the power was off by attempting to start the dishwaser. I removed the metal plate between the dishwater door and the floor by removing the two screws. I removed the two screws that connect the top of the dishwasher to the underside of the countertop. I shut the water valve that supplies hot water to the dishwasher (mine was located under the sink). I disconnected the drain hose (plastic) by using pliers to loosen the clamp the holds the hose on the outlet of the drain pump (drain pump is much smaller than the pump that needed replacement). A towell is handy to soak up the water that comes out the hoses. I loosened the nut on the water supply hose (this was difficult because of lack of room)using a wrench and pliers. I opened the door on the metal box that houses the wire nuts for the electrical connection to dishwater, and I removed the wire nuts and the screw for the ground wire. Once the white, black, and gound wires were disconnected, I could pull the dishwater out. I also had to pull the drain hose out from the clips on the side of the washer to pull the dishwasher out into the middle of the kitchen floor. I flipped the dishwasher on its back. I removed the single bolt that held the broken pump motor to the dishwasher, and then the motor twisted counterclockwise and I pulled it out. The pump shaft would not turn freely with my pliers, so I knew the motor was broken. I removed the pump end (impeller) from the dishwasher by tapping it with my screwdriver. The impeller end came out along with a metal screen. The metal screen was 50% plugged, so I cleaned it and put it back in place. I wet the gasket on the new pump motor and slid it back in place while rotating clockwise and locking it in place with the tabs. I replaced the bolt that holds the motor in place and reversed the repair procedure to re-install the dishwasher. Be sure to run the dishwasher and look for any leaks. The last step is to replace the metal plate between the floor and door. While I had the dishwasher pulled out, I discovered another problem with the pulleys and strings that prevent the heavy door from flopping down, but I won't include this repair. The pump and motor must have been failing for some time because the dishwasher is much quieter now and the dishwasher is much faster. I am sure the plugged screen didn't help either.

I shut off the power to the dishwasher, then I removed the front panel under the door. On the right side just behind the electrical box there are two wires going up to the hi-limit thermostat, (you may need a small mirror to see it), remove one screw that is holding the thermostat bracket, unplug the wires from the old thermostat and install new one. Screw bracket and thermostat back to the underside of the dishwasher, reinstall the front panel, turn on the power, done.

removed both upper and lower racks. removed lower spray arm(left hand thread) removed "water delivry tube and upper spray arm. removed torx screws on pump cover. removed inner chopper cover. Chopper assy had come apart and was full of food crud. cleaned out and installed new chopper assy. kind of tricky don't force it. reassembled. tested OK.could tell sound of more forceful water pressure

Put thread tape on threads. Screwed water hose to part. Pushed hose onto part. Pushed electric clip to part. Screwed part onto washer. Done

Primarily, I read the instructions on line and watched the great videos explaining the repair. While the DW was out, I decided to change out the Drain Pump and the Chopper Assembly, even though only the Circulation Pump and Motor was my problem. These three items are the primary mechanical wear components and it made sense to me to replace these items. Perhaps I'll get another 10 years out of the DW. Two notes about the repairs. If you replace the chopper it isn't clear in the video where exactly it fits into the housing as the video mechanic did a great job of blocking the view of this part of the procedure. It took me awhile to figure out the chopper screen didn't go in the narrow trough, but just outside of that trough. Also, to lubricate the gaskets when putting the motor and the drain pump back in, I use a light coating of petroleum jelly. It is a good lubricant to facilitate the insertion of the both pumps. The pumps slid in easily and there were no leaks when I test ran the DW outside of the cabinetry. If you have a modicum of mechanical ability this job is a very simple, straight forward process. Good Luck!

I released the heater element from the clips on the bottom of the waaher tub. I pulled the unit out from the wall and disconnected power. There are two slip on wire terminals on each end of the heater element accessible from the back that need to be removed. One of them was badly rusted from leaking water, which had caused the short, and had to be replaced. These terminals and the crimping tool to install them are available at any home center. I removed and discarded the old plastic nuts since one of them was damaged by arching from the short circuit. Moving around to the front of the dishwasher, I removed the old heater and installed the new one. I had ordered new rubber washers, but the new heater came with them already installed. Since one of the old ones failed and caused the leak, they are a good thing to keep around as spares anyway. I installed the new nuts and tightened them to enough to ensure that the washers made a good seal. I reconnected the wire terminals to the heater, reconnected power and moved the unit back into place. The circuit opening when the heater failed caused a "call for service" error and the controller would not allow the unit to run. You will know you have this by the "CLEAN" LED flashing seven times. Clear the diagnostics by pressing the buttons for "HEATED DRY", "NORMAL", "HEATED DRY", "NORMAL" and after the controller resets, the dishwaher is ready to run. It's worked like new ever since.

Turned off water and disconnected line, then disconnected drain, turned off power and slid dishwasher out and turned turned upside down and removed hold down bolt ( it is a 3/8 head bolt) removed wire from motor and twisted motor assembly approximately 1/4 turn counter clock wise and removed old motor and seal assembly reinstalled new motor with new seal and rewired. Turned washer back upright and removed filter assembly and lower jet arm, removed cover for food disposal and reinstalled disposal blade back on pump drive reinstalled cover and filter assembly and jet arm. Slid unit back in place and anchored down to cabinet and turned water and power back on ran washer through a short cycle to clean any soap build up that was left inside and that was it, it all works just like new.

Turned off power, turned off water supply and diconnected, slid out dishwasher. Removed the spray wand and tilted dishwasher to access the two nuts and disconnet the wires. Removed the two nuts using a socket. Removed the old heating element and replaced with the new one secured with new nuts ( the old ones were fine but since I bought two new ones why not). Pluged the wires back up slid the dishwasher back in hooked up the water reinstalled the spray wand cut on the water and power. Good as new.

I had a repair guide for my dishwasher which helped. First I removed the water distribution system inside the dishwasher and then removed the door panel. Next I removed the front bottom access panel. I placed a pan under the pump and hoses to catch water when I removed the outlet hose. Very important here! One must remove the pressure switch from the outlet port or else you can't get the pump clear of the washer tub. Next I removed the drain pump by releasing the catch and turning the pump counter clockwise. Now for one of the hard steps. I had to remove three pins which hold the pump assy to the wash tub. Two of them are out of sight so you have to weave you hand past all the hardware and "feel" for the back two. At this point the pump assy just lifts out. Remove the motor /pump by removing one bolt and turning it counter clockwise and withdrawing. I put the new one in. Don't forget to put the pump screen in as I missed this and had to redo the job. Reverse all the previous steps being careful to keep the motor guard out of the pump seal area. Use lots of silicon seal grease and check for leaks on first power up. It took me a couple of adjustments to get a leak-free seal.

Removed dishwasher from under the counter and took it to my shop. With the washer on its side, I removed the motor, then the impeller and seal. I then disassembled the motor and replaced the front bearing(purchased separately). This required an arbor press. I then reassembled the motor and installed the new seal and impeller. Reassembled in reverse order. Reinstalled under the counter and made conections. Checked for leaks and proper operation.