Admiral Dryer: Belt Tensioner Pulley Melted or Seized -... | appliancefaults.com

Technical Background:

MCU logic and voltage paths.
The dryer's motor control unit (MCU) manages the motor operation based on user settings and sensor inputs. The belt tensioner pulley is a passive component, but its failure puts extra strain on the motor, potentially leading to MCU issues if the motor overheats and backfeeds voltage.

Symptoms:

US homeowner observations.
• Dryer making a loud squealing or grinding noise.
• Clothes taking longer than usual to dry.
• Burning rubber smell emanating from the dryer.
• Dryer drum not turning at all.
• Evidence of melted plastic near the belt tensioner pulley.

Possible Causes:

Overloading the dryer with excessive laundry.
Worn or damaged dryer drum support rollers.
Restricted or blocked exhaust vent causing excessive heat.
Lack of lubrication on the tensioner pulley bearing.
Defective drive motor causing excessive belt friction.

Solution:

1

Unplug the dryer from the 120V AC outlet and turn off the breaker.
2

Remove the dryer's front panel. Usually held by screws located at the bottom or inside the lint filter housing. Use a 1/4-inch nut driver.
3

Inspect the belt tensioner pulley for melting, cracks, or signs of seizure. Also, examine the dryer belt for wear or damage.
4

Remove the old tensioner pulley by releasing the belt tension and detaching the pulley from its mounting bracket. A 5/16-inch socket may be needed.
5

Install the new tensioner pulley, ensuring it spins freely. Route the dryer belt correctly around the drum and motor pulley.
6

Reassemble the dryer front panel and secure all screws.
7

Test the dryer operation, ensuring the drum turns smoothly and there are no unusual noises. Check for proper heating.

Safety Warning:

Disconnect power before servicing. Lockout/Tagout (LOTO) procedures must be followed. High voltage components are present inside the dryer. Capacitors can hold a charge even after the dryer is unplugged.

Prevention:

• Avoid overloading the dryer.
• Clean the lint filter after each load.
• Inspect and clean the exhaust vent at least once a year.
• Periodically check the dryer belt and tensioner pulley for wear.

Expert Tip:

To access diagnostic mode on some Admiral dryers, simultaneously press and hold the 'Start/Pause' and 'Cycle Signal' buttons for 3 seconds. This may reveal error codes related to motor speed or heating element issues.

Frequently Asked Questions

•How do I check the dryer exhaust vent for blockages?

Disconnect the vent from the dryer and the wall. Use a vent cleaning brush kit to remove lint buildup. Check for any crushed or kinked sections.

•What is the correct tension for the dryer belt?

The belt should have about 1/2 inch of deflection when pressed midway between the motor pulley and the drum.

•How do I lubricate the dryer drum support rollers?

Apply a small amount of high-temperature grease to the roller shafts. Avoid getting grease on the drum surface or the belt.

Admiral Dryer: Belt Tensioner Pulley Melted or Seized - Symptoms and Fix

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I check the dryer exhaust vent for blockages?

•What is the correct tension for the dryer belt?

•How do I lubricate the dryer drum support rollers?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: