Amana Dryer Making Metallic Grinding Noise:... | appliancefaults.com

Technical Background:

The dryer's MCU (Main Control Unit) controls the motor relay based on timer settings and thermistor inputs. The motor relay energizes the motor, which turns the drum and blower. Mechanical noises often stem from worn or damaged components in the drive system. Voltage to the motor is typically 120V AC or 240V AC depending on the model and system.

Symptoms:

The homeowner reports a metallic grinding or scraping noise coming from the Amana dryer during operation. The noise may be consistent or intermittent, and may be louder during certain parts of the drying cycle.

Possible Causes:

Worn Drum Support Rollers
Damaged Drum Slide/Glide
Worn or Broken Blower Wheel
Foreign Object in Blower Housing
Worn Drum Belt
Motor Bearing Failure

Solution:

1

Disconnect power: Unplug the dryer from the outlet or turn off the breaker.
2

Remove the dryer cabinet: Typically involves removing screws at the rear panel and/or top of the machine. Consult the service manual for your specific model.
3

Inspect the drum support rollers: Look for flat spots, cracks, or excessive wear. Replace if necessary. Common sizes are 5/16-inch or 3/8-inch.
4

Examine the drum slides/glides: These are usually located at the front of the dryer drum. Look for wear or breakage. Replace if needed.
5

Check the blower wheel: Remove the blower housing and inspect the blower wheel for damage or obstructions. Remove any debris. A 1/4-inch nut driver is usually needed.
6

Inspect the drum belt: Check for wear, cracks, or fraying. Replace if necessary. Ensure it is properly seated on the motor pulley and drum.
7

(Advanced) Check motor bearings: If the noise persists, motor bearing failure is likely. This usually requires motor replacement or licensed technician repair.

Safety Warning:

Disconnect power before performing any repairs. Lock Out/Tag Out (LOTO) procedures should be followed. Some components may retain a high voltage charge even after the unit is unplugged. Exercise caution.

Prevention:

Regularly clean the lint filter after each use. Inspect and clean the dryer vent duct at least once a year to prevent lint buildup and ensure proper airflow. Avoid overloading the dryer, as this can put excessive strain on the components.

Expert Tip:

Many Amana dryers have a diagnostic mode. Refer to the service manual for the specific sequence to enter diagnostic mode for detailed error codes and component testing. A common sequence involves pressing a combination of buttons simultaneously.

Frequently Asked Questions

•How do I access the drum rollers on my Amana dryer?

Accessing the drum rollers typically involves removing the front panel of the dryer. Refer to your model's service manual for specific instructions, as disassembly can vary. You'll likely need a 1/4-inch nut driver and a Phillips head screwdriver.

•What type of lubricant should I use on the drum rollers?

It is generally not recommended to lubricate drum rollers. If the rollers are making noise, they are likely worn and should be replaced rather than lubricated. Lubricating them might temporarily silence them, but it won't fix the underlying problem and may even attract lint, exacerbating the issue.

•How do I check if the motor bearings are bad?

Checking the motor bearings typically involves removing the belt and manually rotating the motor pulley. Listen for grinding or squealing noises. If you suspect bad bearings, it's best to have a qualified technician check the motor using an ammeter during operation to measure current draw, or physically inspect the bearings by disassembling the motor which requires specialized tools.

Amana Dryer Making Metallic Grinding Noise: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I access the drum rollers on my Amana dryer?

•What type of lubricant should I use on the drum rollers?

•How do I check if the motor bearings are bad?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: