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

Technical Background:

The washer's Motor Control Unit (MCU) sends a 120V AC signal to the motor windings to initiate agitation. The motor then drives the gearcase, which translates the rotational motion into the oscillating motion of the agitator. Any mechanical failure within this system can cause abnormal noises.

Symptoms:

The homeowner reports a loud grinding noise emanating from the washer during the agitation cycle. The noise may be intermittent or constant during agitation.

Possible Causes:

Worn or damaged motor coupling
Failed or failing gearcase
Foreign object lodged in the agitator or tub
Worn agitator dogs or cam (if applicable)
Defective motor bearings

Solution:

1

Disconnect power to the washer at the breaker panel (LOTO).
2

Remove the washer's cabinet to access the motor and gearcase assembly.
3

Inspect the motor coupling for signs of wear, cracks, or breakage. Replace if damaged.
4

Manually rotate the agitator shaft. If it's difficult to turn or feels rough, the gearcase likely has internal damage and needs replacement.
5

Check for any obstructions between the agitator and the wash tub. Remove any foreign objects.
6

Inspect the motor. Use a multimeter to test the motor windings for continuity (should show a low resistance reading). Also check for shorts to ground.
7

If the motor windings are good, but the motor still makes a grinding noise when powered (without the belt connected), replace the motor.

Safety Warning:

Disconnect power to the washer at the breaker panel before performing any repairs. Use Lock-Out/Tag-Out (LOTO) procedures to prevent accidental re-energization. 120V AC is present when the washer is connected to power; exercise caution.

Prevention:

Avoid overloading the washer with excessive laundry. Regularly inspect the motor coupling for wear and replace it preventatively every 2-3 years. Use the correct type and amount of detergent.

Expert Tip:

Some Roper washers have a diagnostic mode. Simultaneously press and hold the start/pause and cycle selection buttons for 3 seconds to enter diagnostic mode. This may reveal error codes related to motor or gearcase issues.

Frequently Asked Questions

•How do I access the motor coupling on my Roper washer?

Typically, you'll need to remove the cabinet. This usually involves removing screws at the rear of the machine and sliding the cabinet either upwards or forwards. Refer to your specific model's service manual for precise instructions.

•What is the typical resistance reading I should expect on a good washer motor winding?

A healthy washer motor winding usually exhibits a low resistance, often between 3 to 10 ohms. However, the exact value can vary slightly depending on the motor's design. Zero ohms indicates a short, and infinite ohms indicates an open winding.

•How much does a gearcase replacement typically cost, including parts and labor?

Gearcase replacement costs can vary widely depending on the model and local labor rates. Expect to pay between $300 and $600 for the complete job, including the part and labor. Getting a quote from a qualified appliance repair technician is recommended.

Roper 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 access the motor coupling on my Roper washer?

•What is the typical resistance reading I should expect on a good washer motor winding?

•How much does a gearcase replacement typically cost, including parts and labor?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: