How to replace a dryer idler pulley

This DIY dryer repair guide explains how to replace a dryer idler pulley. The spring-loaded idler pulley keeps the belt tight so the belt can grip and rotate the drum during the drying cycle. A worn or damaged idler pulley squeals or squeaks when the dryer is running. Because typical machine oils collect dust, lubricating the idler pulley only makes the problem worse. If the idler pulley makes noise when the dryer is running, replace it with the manufacturer-approved dryer part.

The video below shows an electric dryer, but the repair process is the same for gas. Follow these steps to replace the idler pulley in Kenmore, Whirlpool, Maytag, Amana, Roper, Crosley and Estate dryers with a lint screen housing located in the top dryer panel.

Instructions

1. Shut off the power

Unplug the dryer. If it's a gas dryer, shut off the gas.

Wear work gloves to protect your hands.

2. Raise the top panel

Pull the lint screen out of the housing in the top panel of the dryer.

Use a Phillips screwdriver to remove the 2 screws that secure the lint screen housing to the top panel. To release the clips that lock the top of the dryer in place, push a putty knife under the lid near the left and right edges of the front of the dryer.

Lift the top and prop it securely against the wall behind the dryer.

3. Remove the front panel

Use a slot screwdriver to release the locking tab on the wire harness plug for the door switch. Disconnect the wire harness.

Use a 5/16-inch nut driver to remove the front panel mounting screws from the inside of the dryer.

Pull the front panel forward slightly, and then lift and unhook it from the 2 bottom hangers.

Pull the front panel off of the dryer and set it aside.

4. Remove the idler pulley

Take a digital picture of the configuration of the drive belt on the idler pulley and the motor pulley so you can install it correctly.

Lift the front of the drum to access the drive motor and idler pulley.

Push the idler pulley to the right to release tension on the drive belt.

Release the drive belt from the drive motor pulley and pull it out of the idler pulley.

Pull the idler pulley out of the bracket in the base of the dryer.

5. Install the new idler pulley

Install the idler pulley in the bracket at the base of the dryer and thread the drive belt through the new idler pulley.

Push the idler pulley to the right and loop the drive belt over the motor pulley.

Tip: While the dryer is open, vacuum dust and lint from inside the dryer.

6. Reinstall the front panel

Position the front panel on the hangers at the bottom of the dryer.

Line up the mounting holes and reinstall the screws in the top of the front panel to secure it to the dryer.

Plug the wire harness back into the plug on the door switch. Make sure the locking tab engages properly.

7. Reassemble the top panel

Lower the top panel and snap it into place.

Reinstall the screws in the lint duct housing and reinstall the lint screen.

8. Restore power to the dryer

Plug the dryer into the wall outlet. If it's a gas dryer, turn on the gas supply to the dryer.