Amana Washer Motor Grinding Sound During Agitation:... | appliancefaults.com

Technical Background:

The Motor Control Unit (MCU) sends voltage to the motor windings, initiating the agitation cycle. The voltage path includes the motor windings, capacitors, and related circuitry. A faulty component or mechanical obstruction can cause the motor to draw excessive current or vibrate abnormally, resulting in a grinding noise. The clutch links the motor to the transmission to control the agitation and spin cycles.

Symptoms:

The homeowner reports a loud grinding noise emanating from the Amana washer during the agitation cycle. The washer may still be agitating, but the noise is abnormal and concerning.

Possible Causes:

Worn or damaged drive belt.
Failed clutch assembly.
Worn or damaged motor coupling.
Worn or damaged transmission bearings.
Foreign object lodged in the pump or between the tubs.

Solution:

1

Disconnect the washer from the power outlet (120V AC) and water supply.
2

Access the washer's motor and drive components by removing the cabinet panels using a 1/4-inch nut driver.
3

Inspect the drive belt for wear, cracks, or damage. Replace if necessary.
4

Examine the clutch assembly for slippage or damage. If faulty, replace the clutch assembly.
5

Check the motor coupling for wear or breakage. A worn coupling will cause play and noise. Replace if necessary.
6

Listen to the transmission while manually turning the agitator. A grinding sound indicates internal transmission damage. Replacing the transmission is often more cost-effective than repairing it.
7

If the grinding noise persists after replacing components, check for any foreign objects trapped between the inner and outer tubs. Remove any obstructions.

Safety Warning:

Always disconnect power to the appliance before performing any repairs. Lock Out/Tag Out (LOTO) procedures must be followed. High voltage components are present within the washer's control system. Exercise caution.

Prevention:

Avoid overloading the washer, as this can strain the motor and drive components. Regularly inspect the drive belt for wear and tear. Run a washer cleaner cycle monthly to prevent buildup and debris accumulation.

Expert Tip:

Enter diagnostic mode by pressing and holding the start button for 3 seconds, then select the agitation cycle. This mode allows you to isolate and test the motor and clutch independently.

Frequently Asked Questions

•How do I test the clutch assembly to determine if it's slipping?

With the washer unplugged, try turning the spin basket by hand. If it spins freely in both directions without engaging the agitator, the clutch is likely slipping.

•What is the typical lifespan of a washing machine transmission?

The typical lifespan of a washing machine transmission is 8-12 years, depending on usage and maintenance. Overloading the washer frequently can shorten its lifespan.

•How do I remove the inner tub to check for foreign objects?

First, remove the agitator. Then, you'll typically need a spanner wrench to loosen and remove the tub retaining nut. After removing the nut, you should be able to lift out the inner tub.

Amana Washer Motor Grinding Sound During Agitation: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I test the clutch assembly to determine if it's slipping?

•What is the typical lifespan of a washing machine transmission?

•How do I remove the inner tub to check for foreign objects?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: