What causes an idler pulley to fail?

Idler pulleys typically fail due to wear on the bearing or the pulley wheel itself. Over time, the bearing can seize, or the plastic/metal wheel can develop flat spots or cracks, leading to increased friction, noise, and eventual breakage. Excessive lint buildup can also contribute to overheating and premature wear on the component.

Can I use the dryer if the idler pulley is bad?

Operating a dryer with a failing idler pulley is not recommended. It can lead to further damage to other components, such as the drive belt or motor, due to increased friction and strain. It also poses a potential fire hazard if the pulley overheats or the belt breaks and gets tangled. Repairing it promptly is advisable for safety and to prevent more costly repairs.

How do I know if the idler pulley or the motor is making noise?

To differentiate, always disconnect power first. Then, remove the drive belt from the motor pulley and idler pulley. Spin the idler pulley by hand; if it's stiff, wobbly, or noisy, it's likely the culprit. If the motor shaft spins freely and quietly, the idler pulley is the more probable source of the noise. If both seem fine, check other rotating parts.

Dryer Idler Pulley Repair Guide | Symptoms & Replacement

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What the W10837240 does

The idler pulley maintains tension on the drive belt, allowing the dryer drum to rotate smoothly. It typically features a bearing that facilitates its rotation.

Symptoms when this part fails

Loud squealing or grinding noises from the dryer
Dryer drum not tumbling or rotating
Burning smell coming from the dryer
Excessive vibration during operation

Compatibility

Fits the Maytag family. Specifically:

Any unit originally equipped with OEM part number(s): W10837240.
Check the model/rating plate inside your appliance and compare it against the fitment table on the product listing before ordering — this guide does not list specific compatible models because Amazon does not provide verified fitment data through this pipeline.

Tools you'll need

Phillips head screwdriver
Nut driver set
Pliers
Work gloves

Difficulty: Moderate · Time: 30-60 minutes

How to install the W10837240, step by step

Unplug the dryer from its power outlet.
Remove the front panel or top access panel of the dryer.
Locate the idler pulley and the drive belt.
Relieve tension on the drive belt and remove the old pulley.
Install the new idler pulley and properly re-route the drive belt.
Reassemble the dryer panels securely.
Plug in and test the dryer for proper operation.