Speed Queen Washing Machine Smells Like Burning Rubber:... | appliancefaults.com

Technical Background:

The MCU (Microcontroller Unit) controls the motor speed and direction during the spin cycle. High amperage draw caused by excessive friction can overheat components, including the drive belt or motor windings. Voltage paths from the MCU to the motor control board dictate motor operation.

Symptoms:

The homeowner reports a distinct burning rubber smell emanating from the Speed Queen washing machine specifically during the spin cycle.

Possible Causes:

Worn or damaged drive belt
Motor pulley friction
Tub seal failure
Foreign object lodged in the tub or pump
Overloaded washing machine

Solution:

1

Disconnect the power: Unplug the washing machine from the outlet.
2

Inspect the drive belt: Open the washer cabinet (typically rear access panel). Look for cracks, fraying, or excessive wear on the belt. Replace if damaged.
3

Check motor pulley: Examine the motor pulley for damage or obstructions. Ensure it rotates freely.
4

Examine tub seal: Look for signs of water leakage around the tub seal. A failing seal can cause friction and burning smells. Replace if leaking.
5

Check for obstructions: Inspect the tub and pump for any foreign objects (socks, coins, etc.) that may be causing friction. Remove any obstructions.
6

Replace drive belt (if necessary): Use a 5/16-inch socket to loosen the motor mounting bolts. Install new belt and tension it correctly. Consult service manual for proper tension.
7

Test run: Plug in the washer and run a short spin cycle to confirm the burning smell is gone.

Safety Warning:

Always disconnect the power to the appliance before performing any repairs. Lock Out/Tag Out (LOTO) procedures are critical to prevent accidental electrocution. Some components may retain a high voltage charge even after the appliance is unplugged.

Prevention:

Avoid overloading the washing machine. Regularly inspect and clean the lint filter. Consider replacing the drive belt every 3-5 years, or as recommended in the owner's manual.

Expert Tip:

Speed Queen washers often have a service mode accessible by pressing a specific sequence of buttons. This mode allows for diagnostic testing of various components, including the motor and pump. Consult the service manual for the exact sequence for your model. A common sequence involves holding the 'Start/Pause' and 'Cycle Select' buttons simultaneously for 5 seconds to enter diagnostics.

Frequently Asked Questions

•What is the correct drive belt tension?

Refer to the service manual for your specific model. Typically, deflection under moderate pressure should be about 1/2 inch.

•How do I access the pump to check for obstructions?

Access varies by model, but often involves removing the front or rear panel. You may need a 1/4-inch nut driver or Phillips head screwdriver. Ensure the washer is unplugged and water supply is shut off.

•What voltage should I expect at the motor during the spin cycle?

The voltage will depend on the specific motor and model, but it's typically 120V AC. Use a multimeter to measure the voltage at the motor terminals during the spin cycle. Consult the wiring diagram for your model.

Speed Queen Washing Machine Smells Like Burning Rubber: Troubleshooting Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the correct drive belt tension?

•How do I access the pump to check for obstructions?

•What voltage should I expect at the motor during the spin cycle?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: