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Customer Questions and Answers for Dryer Idler Pulley by Whirlpool

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Manufacturer Part
4.89 (64)
By: Whirlpool
Part Number: OEM18031755
Manufacturer Part Number: WP691366

Idler pulley maintains belt tension in your dryer drum assembly. Replace if the wheel is cracked, bracket is broken, or pulley has worn bearings.

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Questions & Answers

For Whirlpool Dryer Idler Pulley (Part Number: OEM18031755)

Phil for Model Number WED4950HW0

I have replaced the belt, drum rollers, and idler pulley installed as OEM parts from AppliancePartsPros and at startup of the drying cycle, I have a loud popping sound that occurs as the drum makes its revolution. As the dryer heats up and the clothes dry and the weight of the clothes become lighter, the noise gets less to the point of stopping before the end of the dry cycle. I have also checked the blower fan flywheel. The dryer is clean, there is no lint buildup on the wheel, and there appear to be no cracks in the blower flywheel or wobbling; it's not loose. What could be causing this popping sound? Thank you for your help.

1 Answer

Hello Phil, and thank you for your question. If the drum does not have a warp or a sticky residue that could cause the noise, the next step would be removing the front panel of the dryer. Once it is removed, the drum and belt would need to be removed. The door switch can bypassed or the front panel can be kept close enough to keep the door switch connected to the harness. From there, the dryer can be plugged in or the breaker turned on and the dryer can be started. If the popping continues, and it sounds like it is not coming from the console or the terminal block where the power cord connects, the noise would be coming from the heater or the motor. The power cord can be unplugged again and the heating element 279838 inspected to see if there is an indication of an arc of electricity occurring during operation. If there are no spots that look like a mini lightning bolt occurred, the popping would very likely be occurring with the motor 279827 itself.

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1 Answer

Eric, Check the rollers and the idler pulley to make sure that they are not seized. This would be the most likely cause for this issue.

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Gkevans for Model Number WED5100VQ0

I get all my parts from AppliancePartsPros and I am an engineer, but I am really puzzled. My Whirlpool electric dryer is about 7 years old. It heats and turns fine, but while running it intermittently emits a very low frequency hum that drives my wife nuts.I, fortunately, have lost most of my low frequency hearing! This 'hum' will last for a few minutes then go away. Later it will return. No discernible correlation to cold or warm state of the dryer. No squeaks or rattles anywhere. I tore down the dryer and checked the belt, idler pulley (cleaned and lubricated it), drum rollers (applied silicone to bearings and they turn freely), the roller shafts, the blower wheel (visual check, no removal) and the spin on turning the motor by hand. All of these parts seem fine. No variation in rotation speed when the motor is powered. The hum has become noticeable even to me over the past 4 weeks. I have removed the back cover and listened at every accessible location and I cannot determine a source. Do you have any thoughts?

1 Answer

gkevans, Possible blower wheel noise, you have lubricated and inspected every piece of your unit we would have told you to inspect. But remove the rear panel and take off the cover to the blower wheel and inspect it for any looseness or debris in the ducting.

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1 Answer

Be sure that when you are turning the drum that you are only turning it clockwise if you are looking from the front of the dryer.

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1 Answer

Adam, This could be just a faulty idler pulley which is the most likely cause and would want to replace the idler pulley.

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Joe Harnedy for Model Number 110.73102100

The pulley where the belt raps around and then gets attached to the motor to turn the drum, does not have a wheel contained in it as the replacement part.I have already purchased the belt before I took apart the cabinet, found the old belt in half, but when I went to install the new belt,I noticed it had no plastic wheel. Is it worth my time to wait and order the part you show as a replacement or can I use the old part which has no wheel

1 Answer

Joe, You will want to wait until you get the idler pulley for your unit because if you do not the belt will not turn properly and it will break again.

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1 Answer

Craig, it is recommended that the rollers are inspected for any residues along the bearing shafts, as well as inspecting for any debris in the front felt seal, rear drum seal, and blower wheel that may be causing a squeaking noise.

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1 Answer

Scott, If the bushing that you are referring to is part of the idler pulley then you would need to get the idler pulley for the unit. If the part is on the motor then the motor would need replaced.

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1 Answer

Paul, recheck and make sure you have the correct belt 341241 341241 or 660996, it should measure 92.25 inches in length. Make sure the belt doesn't have any twists in it ribs face down/against the drum and is outed over the drum in the proper location area of the drum. Then check and make sure the belt is routed through the opening in the idler spring assembly and onto the motor pulley properly. Recheck using the video and photos under the 341241 belt part diagram.

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1 Answer

Hello Jim, This WP691366 is the early and current configuration of this part. The manufacturer thought they could profit from this new design which wasn't lasting as long as the part warranty, so it was discontinued. You will need the configuration with the rotating wheel WP691366.

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