WM3431H LG Washer - Instructions

During my troubleshooting, I removed the bottom to access the drain pump. I had to cut some wire ties so that I could make removing the wires easier. After checking the pump and putting everything back together, I determined that the pump itself was bad. Pump impeller should not rotate freely! After receiving new part, I installed it relatively easy. I didn't have to remove the bottom since there was enough room through the access hole. Just make sure to make where wires go before removing old part.

I watched a video of how to replace the pump and it showed taking the top and front off to get to it. I actually found this could be done by removing the back panel from the washer. There were two hose clamps you have to squeeze and slide up and two wires going to the pump. There are three screws holding the pump that need to be removed from the front of the washer. Once these are removed all you have to do is push a tab down and the motor slide right out. The pump assembly can also be reached from the bottom of the washer.

Turn off hot water supply and activate a cycle on the washer momentarily, with hot water selected on front panel options to relieve hose pressure. Slide washer out to gain access to rear of unit. Unplug washer from AC source. Using pliers, remove washer supply hose from washer-side of the line (water may drain from hose) Remove single Phillips screw at bottom of each nylon lid holder at rear. Using a plastic putty knife, place between front panel and top lid to loosen lid and slide to rear. Remove lid and store aside. Hot and cold inlet valves sit side-by-side at top rear of the unit. Disconnect connector from valve by pulling gently away from valve plug prongs and place to the side. Using pliers, compress hose clamp and move to lower section of hose. Carefully rotate hose back and forth to remove from assembly. Inlet valve is held to washer body rear with 3 small Phillips screws. Remove first 2 and then while holding inlet valve body, remove final screw to free inlet valve assembly. Replace with new assembly by reversing these steps.Make certain when supply hose is reconnected, it is firmly tightened but DO NOT over tighten. Test washer by running a cycle to ensure there are no leaks.

new pump was a little different ,but mounted properly. Tipped washer on its side, changed pump by working trough bottom and back access. It went pretty smoothly, works fine.

Basic skill

Removed the top, the front, got to the pump, removed it and replace it with the new one.

Found the part of Part Select by describing the problem. used a Utube video and step by step we were able to take apart, replace and put back everything with just a screw driver - I saved so much money!

The pump is apparently used for more than one washer, and the R&R instructions may be significantly different. I found a youtube video for my exact washer.

Found great Youtube video, followed step by step. Only difficult part was getting the tub gasket clamp back on. But all in all pretty easy. If tub won't drain and weird noise coming from pump do not hesitate to do it yourself and save some coin!

My washer would try to spin and remove the water according to the time allowed. Consequently my washer would take longer than the time allowed to drain therefore water would send a code error then the machine would stop working. So I remove the hose from the pump and found my son's little small sock blocking the drain. I removed the sock and reinstalled all hoses. Everything is fine now. No need for a replacement item. Just a little servicing.

Found on line OE meant washer not pumping out water with the suggestion to clean the filter and inspect the pump and lines for blockage. No problems there. You must be careful to empty the water manually before removing the filter. My wet vac helped but I still made a mess. I found a mechanic to look at the washer. He said it is common for the pump on these washers to go bad, especially if the washer has sat out of service. They wanted $300 to replace the pump. I found the part on this website for $53 and replaced it myself. The only hard part was emptying the water without making a mess and leaning the washer up and back far enough safely to remove the pump, then working on my back under the machine.

greate very easy and the parts fit awsome the shiping was fast and easy very satified

unplug washer and disconnect inlet and outlet hoses. drain water from washer (about 2 gallons) by removing lint screen from front of washer. lay washer on side (I used a blanket to avoid damaging the paint) remove all the phillips head screws in the plastic bottom and the metal feet of the washer. Gently pull the bottom of the washer off. There are 3 shock absorber looking things that pull apart and are greasy. Try not to mess with them much. Just pull gently, and they slide apart. cut the zip ties holding the wires to the washer bottom piece. remove the screw in the lint screen area and gently pull the recessed plastic thing out the front of the washer. remove the screws holding the pump assembly on the front of the washer. Remove the three screws holding the pump assembly on the outlet pipe manifold. Installation is the reverse of removal, take care to put the shock absorber looking things back in gently and together at the same time when reinstalling the plastic bottom of the washer.

ordered part from Part Select and it was here very quickly,but the part came damaged (not the fault of Part Select). I ordered another one and PartSelect had it here the next day. I watched the video on how to replace it and it was very helpfull.The particular part I replaced (pump motor) does not seem very durable. I will buy an American made washer the next time I need one. I will use Partselect in the future and recomend it to others.

Conclusion was that either the control panel or the noise filter (an electrical fuse apparatus)was bad. Disconnected the water line, turned off power, and pulled unit out from cabinets. Determined that voltage was going into the noise filter (white harness) but almost no voltage coming out (red harness). Ordered noise filter. Hardest part was removing old noise filter from dishwasher frame without removing the whole unit from cabinet and turning upside down.One screw holds the part in the frame. With power off, I used a very small ratchet with phillips screw driver. Pried unit out with screw driver on side to the panel front. It has a retaining tab there.Installation was the reverse. Instead of putting screw back the way it was originally installed, I screwed it in from the outside of the frame. Much easier and just as solid. Tested unit with power on. Hooked up water line. Works great. Note: LG dishwahers have a high repair rate and that this part has a high failure rate. This LG unit was two years old. Never had to fix my 15 year old Sears dishwasher. It still works to this day. (I gave it to my daughter.)