Maytag Washer Drive Pulley: Plastic vs. Metal - Which is... | appliancefaults.com

Technical Background:

The Maytag washer's MCU controls the motor speed and direction via voltage regulation. The drive pulley transfers rotational force from the motor to the transmission, which then drives the wash basket. A plastic pulley can be prone to cracking or stripping under heavy loads or due to age. A metal pulley offers increased durability but may transmit more vibration.

Symptoms:

The washer is making a loud banging noise during the spin cycle. The washer is not spinning. The drive pulley appears cracked or broken. The drive belt keeps slipping off the pulley.

Possible Causes:

Worn or cracked plastic drive pulley.
Stripped splines on the pulley hub.
Excessive load during wash cycles causing pulley stress.
Imbalanced loads causing vibration and premature wear.
Defective motor or transmission placing undue stress on the pulley.
Foreign objects caught between the pulley and drive belt.

Solution:

1

Unplug the washer from the 120V AC outlet. Use a multimeter to confirm the outlet is de-energized.
2

Remove the washer's rear access panel using a 1/4-inch nut driver.
3

Inspect the drive pulley for cracks, wear, or damage. Check the belt for proper tension and wear.
4

Remove the old pulley using a pulley puller tool if necessary. Note the direction of the belt routing.
5

Install the new metal drive pulley, ensuring it is securely tightened to the motor shaft. Torque to manufacturer specification if available.
6

Reinstall the drive belt, ensuring it is properly seated on the pulleys.
7

Reinstall the rear access panel and plug the washer back into the 120V AC outlet. Run a test cycle.

Safety Warning:

Always disconnect power to the appliance before performing any repairs. Use proper lockout/tagout (LOTO) procedures. Capacitors can hold a dangerous electrical charge even after the unit is unplugged. Wear appropriate safety glasses and gloves.

Prevention:

Avoid overloading the washer. Distribute clothes evenly in the wash basket. Inspect the drive belt and pulley periodically for wear and tear. Consider replacing a plastic pulley with a metal one for increased durability. Check suspension components.

Expert Tip:

After replacing the pulley, run the washer in service mode to check for any error codes and calibrate the motor speed. Enter service mode by pressing and holding the Start/Pause button, then pressing the Power button twice within 2 seconds.

Frequently Asked Questions

•What is the correct belt tension for the drive belt after replacing the pulley?

The belt should have approximately 1/4 to 1/2 inch of deflection when pressed midway between the pulleys. Too tight or too loose can cause premature wear.

•Will a metal pulley cause more vibration than a plastic pulley?

Potentially, yes. A metal pulley can transmit more vibration. Ensure the washer is level and the suspension components are in good condition to minimize vibration.

•Where can I find the torque specification for tightening the pulley to the motor shaft?

The torque specification should be listed in the washer's service manual. If unavailable, a general torque of 15-20 ft-lbs is often sufficient for this application, but always prioritize the manufacturer's recommendation.

Maytag Washer Drive Pulley: Plastic vs. Metal - Which is Better for Repair?

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the correct belt tension for the drive belt after replacing the pulley?

•Will a metal pulley cause more vibration than a plastic pulley?

•Where can I find the torque specification for tightening the pulley to the motor shaft?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: