MDB7749SBB2 Maytag Dishwasher - Instructions

I watched the video and this was the easiest repair ever. Took longer to disconnect and reinstall than it did to change out the pump. Highly recommended watching the video

Shut the power to the dishwasher off. Pulled unit out from under the counter top and raised the left hand side up for easy access. Disconnected the wiring, undid the clips, turned counter clockwise and removed. Reversed the order for installation and Connected the power. Ran several cycles successfully. Problem fixed. Burnt out water pump. Good as new if not better so far. Easy item search, Fast Shipping, Quality Part, Fair Pricing. Thank You Partselect.com

Removed bad wheel sets using screw driver to help pry broken part loose. Then just snapped in replacement. Took less than 5 mins. Now it works great.

I found instructions on line when I goggled my dishwasher name and model number with the words noisy door. There were three or four good suggestions at a couple of the sites I visited. I tried applying vasoline, then silicone to the rope where it travels through the plastic guides but that just cut the sound down about 50%. My dishwasher has plastic guides that look like rollers but they don't turn, they are fixed in place. The ropes squeak as the pass over the guides. The replacement part kit has plastic guides that turn like wheels now so the rope does not drag over them and squeak. This repair could be done by me in 20 minutes or less every time now that I know what I am doing.

I removed the black bottom metal cover then turned the nuts on the adjusting (leveling) bolts to lower the front end of the dishwasher so I could pull it out of the cabinet. Once I lowered is as low as it would go I opened the door and pushed down on it which tilts the dishwasher down and you pull out on it and the top lip clears the cabinet. If your dishwasher just pulls out the first time you try these steps may not be necessary.
Once the dishwasher is out the guides and rope are down at the bottom in the front by the door. It's obvious what to do to replace them.

Remove upper tray and spray arm. Remove two screws retaining pipe for upper spray arm and overhead. Unscrew retainer on top of lower spray arm and remove. Gently rotate the upper feed pipe clockwise until pipe can be removed from lower pipe. You may then remove the lower pipe and bearing housing where the seal is. Reverse order for reassembly. I also replaced upper spray arm bushing. Very simple, remove one screw and the arm will come out.

Disconnect the water supply, the drain line, and the two screws that go up into the cabinet frame, then pull the dishwasher out from under the counter. Tip the unit onto it's face and the main pump/motor is facing up. Turn off the power then unplug the electrical connector from the motor. Remove the single bolt at the base of the motor then turn the whole motor ~1/4 turn counter-clockwise. A firm pull will remove the motor/pump at this point.
The new motor/pump has a new seal. See that the arrows on the pump volute and the motor frame are lined up before inserting into the housing. The new motor/pump slides into the housing easily and a 1/4 turn clockwise will pull it in tight. Re-install the locking bolt and revers the rest of the steps to get running again.

.The easiest way to complete the impeller and chopper motor replacement is to disconnect the power, water and drain line, remove the dishwasher from the cabinet, set the washer on its back.

From this point everything is visible, pump housing, motor, etc. and it's a matter of disassembly and reassembly. Make note or a drawing of where all the wires are connected so you reconnect them in the right spots.

Reinstall water lines and power and check for leaks before replacing shield or kick plate.

Cut power and turn off water. Pulled the dishwasher out of the cabinet. Removed internal spray unit. Lay a plastic bag on bottom of tub in case a screw falls from upper spray assembly while removing. Disconnected and drained all hoses. Put down plastic lined tarp on floor. Lay dishwaser on its side onto tarp. Removed hose from recirculation pump, removed water sensor and recirculation pump from housing and detach electric connection. Removed 3 plastic push clips and removed entire motor-pump unit from tub. Position new motor-pump unit into tub. Replace 2 push clips into position, then used a flat screwdriver to put some tension and position plastic pump assembly so I could insert 3rd push clip into position. Replaced all components & reconnect hoses. Turn on water & power. A relatively simple repair. Too bad the original motor-pump only lasted 3 years. Not built like the used to. Thank goodness for Part Select.com Great schematics and descriptions. Excellent website, service, delivery and excellent Part! Thank You!

If your chopper assembly has a catastrophic failure like mine did, chances are it took out the teeth on the circulation motor as well. This will lead to the teeth on the chopper being destroyed by the impeller as soon as you turn the dishwasher back on. First, follow the instructional video to remove the motor (found on this site on the circulation motor page) and chopper assembly (also found on this site on the chopper assembly page). The impeller is screwed onto the input shaft of the motor, and you must keep it from turning so that you can unscrew the impeller assembly. I removed the back cover of the motor (there are four screws holding it on) and held a flat pry bar on the rotating assembly inside the motor to keep it from turning, then unscrewed the impeller from the shaft. Mine came off very easy, but be careful not to let your pry bar slip or damage the motors internals. After that, install the washer and grommet from the impeller seal kit on to the impeller, and screw it back on while keeping the motor from turning with your pry bar. Lastly, reinstall the motor and chopper assembly per the aforementioned instructional videos. The whole thing took around an hour to do, and it is much cheaper than replacing the entire circulation motor.

The repair was really easy. First disconnected electricity staring with fuses and removing wires from dishwasher, then disconnected drain hose and water hose. Pulled it out and removed pump turning clockwise no need for tools and same way installed new one. Very easy

I followed the YouTube video exactly and it went very well

Was a cinch just watched the video whole procedure took an hr or so

removed old gasket, installed new.
No Leaks!!
Saved the cost of a new dishwashers

You need to pull the unit out to get access to the spring connected to the rear leg frame. Use the everything in the kit. The rollers are upgraded and will guid the cable better.

pull out the dishwasher
lay it on its side
use a 1/4" drive socket with extension and a universal joint to undo the the hidden bolt,
twist the motor 1/4 turn. this is the hard part you have to pull fairly hard and rock the motor around a little to get the o-ring to let the motor slide out.
lube up the new motor with jet dry or soap and insert back it, turn it back 1/4 turn, install the bolt and plug the motor control wires back in, then reinstall it back under the counter