4KMEDC300BW0 Whirlpool Dryer - Instructions

I raised the top of the dryer, removed the front, the belt and the drum. Slipped off old rollers, installed new ones and new tensioner. Reinstalled drum and belt, bolted front back on and closed the top.

I took the dryer apart ( using a repair book ) It was Super Simple to do I only needed a extra set of hand's to hold the drum in place while reassembling it. removed the hold down snap on collar's on the Motor ( after removing the Blower from the back of the dryer ( super simple. Extra set of hand's needed ) Reassembled in the same order. And now The Dryer work's like NEW..Shure Beat Buying a new Dryer..

When the problem first came up, I took the dryer apart without first looking up any instructions. This wasn't difficult, but didn't realize when removing the fan from the motor, there is a square lug as part of the fan hidden by the rear clamp securing the motor. I was able to remove the fan by holding the motor shaft with a crescent wrench and removing the fan by hand, but was difficult and gloves were necessary in case the fan loosened quickly and my hand came in contact with the sheet metal (very sharp).

I took the motor out and attempted to clean it as it was loaded with dust as was the dryer internals. I tried to lube the motor bearings and appeared to free up, but the sight of metal shavings on the rear bearing seal had me concerned. This ultimely did not work and was trying to buy some time until the new motor arrived.

This is when I looked up the motor part number and found that Parts Select had the part number in stock. I ordered the motor on a Saturday afternoon and got a quick response acknowledging my order. The motor shipped that following Monday from Fresno and arrived on my Southern California doorstep Tuesday. These guys have their act together and are helpful in making the repairs. In my case I did not have to make any adjustments to the wiring or the pulley for my model and replaced the motor the following weekend in about 45 minutes. Since I had the unit apart several times before replacing the motor, the installation went quickly.

The dryer is again working fine for a unit 12 years old and my wife is once again happy that we didn't have to purchase a new dryer.

PULLED THE DRYER APART TO GET TO THE MOTOR , REMOVED MOTOR , LOOKED FOR MODEL NUMBER OF DRYER AND DID RESEARCH ON WHERE TO BUY THE MOTOR AND BOUGHT FROM PARTS SELECT BECAUSE BOUGHT FROM THEM BEFORE

it took loess than 10 minutes to change the door switch after watching the repair video

Partselect order confirmation email included video instructions of how to change the door switch on my model dryer. Like others I had a pause with the switch connector. I viewed the video again and the instrucions showed to use the putty knife tip to push down on the connector tabs and it came right off. Replacing the switch was easy as the video instructions. Fast shipping of the right part at a good price. The video was pricless. Thank you partselect.

I typed in on my brouser Repair Kitchen Aid Dryer door switch.
And on You Tube up came several videos showing me how to ewmove the switch and install the new one.

The hardest part of the job was not instaling the switch but the dryer Vent hose from the back of the dryer after I puled it away from the wall, it disconnected and the I had to Pull the Washer out which was right next to it so I could put the vent hose back to the dyer. I has to disconnect the Hot/cold water line pull the washer out connect the dyer hose reconnect the cold /hot water lines and yada yada yada

checked all the thermostats and the heating element all good had continuity checked the red wire from the timer to the element and it was not sending 120v to the element consistently ordered the timer and replaced in 15 minutes had my dryer heating and drying clothes
parts select had all the wiring diagrams on my model and a how to do video made it easy peasy

Found a U tube video to be useful. Remover 2 screws under the filter lid. Used a putty knife blabe wrapped in masking tape to unclip the lid. 2 screws to remove the switch. Biggest difficulty is seperating the electric connector. installed replacement switch and closed lid.....reality is this is a 15 minute repair. The extra time was to take the time to remove dust and lint from behind the dryer. Easy repair.

First cleaned the back of dryer. Loosened six (6) screws on the back side of the dryer. Took a picture of the connections then proceeded to pull all the connections
Got the new timer and made all the connections. Put back & tightened all the screws . It took approximately twenty minutes to finish replacing the timer.

First, I unplugged the dyer and then I removed all of the screws for the panel that covers the rear of the dryer. This exposed the cycling thermostat's location. I then removed the wires, one at a time so I would be able to put them back on in the same place. Then I removed the one screw using a nut driver and then put the new cycling thermostat in place. It was pretty easy.

I disassembled the dryer once to clean the motor and compartment. After reasembly, the problem persistes. I ordered the motor and the second diasasssembly was accomplished in 10 minutes and the entire job took 45 minutes and the dryer was running like new. Tip- Leave the motor secured while removing the blower fan.

Just follow the instructions the one was provided with Maitanace kit we bought from you.

I order a new belt and I watched the video instructions on how to replace it, follow the instructions, removed the top and took out the dryer tumbler or can, found a broken idler pulley, order a new one, got it in about two days, replaced all the parts and now its working like a new dryer, I called several repair shops and I got estimates from $65 to $150, I spend less than $35 and it took me about 35 minutes to install and I got it fixed..

First I unplugged the dryer from 240V and removed the back cover upper (behind the switch) and lower (exposing the remainder of the parts)

Inside the upper section was a folded wiring diagram of the dryer (don't know if this was courtesy of Whirlpool or another individual, but it was a very nice touch.)

I did a resistance measurement across the heating coil and found out it was fine. I then plugged the dryer back in and carefully took voltage measurements from one phase of power (this was easily accessed where the power comes in to the dryer, just be careful not to touch or short the wires)

I had an assistant turn on the dryer (this makes things go a little faster, as you are behind the dryer otherwise) and checked for 240V across the heater coil.

Once I did not have this, I kept one lead on the left side wire (one of the power phases coming into the dryer) and moved the other lead to the left (as viewed on the wiring diagram) until I no longer had 240V. This identified the faulty component as the Thermostat High-Limit, non resetable.

I ordered the kit with the High Limit NR and High limit Thermostat (as both had to be bad). I also ordered the 150 degree cycling thermostat (although this was not necessary - for <$20 I opted to replace it as well)

Removing wires one at a time, each component is fairly easy to replace.

My only complaint is that with the combo kit, the wire attachment is a little different that the original component and requires you to cut an existing wire and crimp a different terminal to allow all three wires on the High Limit thermostat (250 degrees) to be attached. There is little to show you how exactly the crimp is to be connected (it goes on the smaller of the three wires - DO NOT CUT the jumper provided and USE A GOOD CRIMPER - not the $2 variety, or you'll be getting a new connector!!) The connector provided is designed for some strain relief from one connector to the other, however) An additional jumper with the appropriate connectors already attached would be a nicer design.

Also, make sure you do NOT screw in the smaller cover that covers the power in until you place the entire lower half cover back on the dryer (unless you want to take it off a second time, as I did...) as it uses a common screw to hold both in place.

Overall, fairly easy to do with a minimum of tools, straight blade screwdriver to remove stubborn wire connectors (esp. for HT thermostat 250), ratchet and socket for quick removal and replacement of covers, and a good T&B style crimper ($10-$20 at your local hardware and well worth it even if you only use it a couple of times)

30 minutes and done - the dryer now cranks out the heat and the advanced settings (Auto dry) work great - no more 2-3 times throug to get things dry.

If you have a minimum of mechanical ability and a little bit of electronic troubleshooting skill, you can check and repair this youself and save about an $80-$100 service call.

Thanks to Part Select for the diagram of the dryer layout as well!! (Schematic would be nice if available online, though!)

Shipped the part in about 2 days from order time, as well. Will be back (hopefully not soon, though, as something has to break first!!!)

Be safe and good luck!

(One last note: Make sure your lint trap is clear including the hose - either due to build up or a lazy kid...as this probably caused the failure as heat could not escape...)