Washing Machine Making Knocking Sound When Spinning

Introduction

Is your washing machine making a loud knocking sound, especially during the spin cycle? This can be alarming, and ignoring it could lead to further damage. A knocking sound often indicates that something is loose, unbalanced, or obstructed within your machine. Addressing it promptly can save you money on costly repairs or replacements. The spin cycle is particularly sensitive as the drum rotates at high speeds, amplifying any underlying issues. Don’t delay let’s investigate!

Common Causes of washing machine making knocking sound when spinning

Here are some typical culprits behind that annoying knocking sound:

Unbalanced Load: Clothes clumped to one side can cause the machine to wobble and knock.
Loose Objects: Coins, buttons, or other small items trapped in the drum or pump area.
Worn Drum Bearings: These support the drum, and when worn, cause noise and vibration.
Suspension Rod Issues: These rods stabilize the drum; if damaged, the drum can hit the sides.
Shipping Bolts Still Installed: If you recently moved, check that shipping bolts were removed.
Damaged Drive Pulley: The pulley connects the motor to the drum; damage causes knocking.
Loose Motor Mount: The motor needs to be securely mounted; loose mounts amplify vibrations.
Foreign Objects in the Pump: Socks or small items can block the pump, leading to noise.

Symptoms Checklist

Confirm your washing machine’s issue by checking for these symptoms:

Loud knocking noise primarily during the spin cycle.
The machine vibrates excessively.
The machine moves or “walks” during the spin cycle.
You find small objects near the washer after a wash.
The drum seems loose or wobbly when you push it.
There is a burning rubber smell (indicating drive belt issues).

How to Fix washing machine making knocking sound when spinning Step-by-Step Guide

Unplug the Washing Machine: Safety first! Disconnect the power cord from the outlet.
Check for an Unbalanced Load: Open the washer and rearrange the clothes to distribute them evenly.
Inspect the Drum: Look inside the drum for any loose objects (coins, buttons, etc.). Remove any you find.
Check the Shipping Bolts (if applicable): If the machine is new or recently moved, ensure all shipping bolts are removed from the back.
Level the Washing Machine: Use a level to check if the machine is sitting evenly. Adjust the leveling feet at the bottom until it’s stable.
Inspect the Suspension Rods: These are located inside the machine. To access, you might need to remove the top or side panel (refer to your machine’s manual). Check for any signs of damage or looseness.
Examine the Drive Pulley: Located at the back of the machine (typically behind an access panel), inspect the drive pulley for cracks or damage.
Check the Motor Mount: Make sure the motor is securely attached to the machine’s frame. Tighten any loose bolts.
Clean the Drain Pump Filter: Locate the drain pump (usually at the bottom front of the machine behind a small access door). Clean the filter to remove any debris.
Run an Empty Test Cycle: After performing the above checks, run the washing machine empty on a spin cycle to see if the noise persists.
Listen Carefully: While the empty cycle runs, try to pinpoint the source of the noise. This will help narrow down the problem.
Check Water Inlet Hoses: Ensure that the hoses are secured properly, and are not hitting the back of the washing machine.

Fix the Issue Without Buying Parts

Before considering replacements, try these free fixes:

Reset the Washing Machine: Unplug the machine for 5 minutes, then plug it back in. This can sometimes reset the control panel and resolve minor issues.
Clean the Washing Machine: Regularly clean the drum, dispenser, and seals to prevent buildup that can cause imbalance.
Recalibrate the Machine: Some washing machines have a calibration mode. Refer to your user manual for instructions.
Inspect the Floor: Ensure the floor is solid and level. Weak flooring can amplify vibrations.
Maintenance Basics: Use the correct amount of detergent and avoid overloading the machine.

When Replacement Might Be Necessary

If the noise persists after trying all the above steps, a worn drum bearing or a significantly damaged part may be the cause. Replacing drum bearings is often a complex task best left to professionals. Suspension rods can cost $20$50 per set. Drum bearings can cost $30-$100, plus labor. Replacement might be necessary if the cost of repair exceeds half the price of a new machine.

Safety Warning

Always unplug the washing machine before performing any maintenance or repairs.
Avoid touching any electrical components while the machine is plugged in.
Be careful when lifting or moving the washing machine. It is heavy!
Clean up any spilled water immediately to prevent slips and falls.

Tools You May Need

Screwdrivers (Phillips and flathead)
Adjustable wrench
Level
Pliers
Gloves
Shop towel

FAQ

Here are some common questions and answers:

Q: Why is my washing machine only knocking during the spin cycle? A: The high speed of the spin cycle exacerbates imbalances or loose components.
Q: Can I still use my washing machine if it’s making a knocking sound? A: It’s not recommended. Continuing to use it could worsen the problem and cause further damage.
Q: How do I know if it’s the drum bearings? A: If the knocking is accompanied by a grinding noise and the drum feels loose, it could be the bearings.
Q: What if I can’t find the drain pump filter? A: Consult your washing machine’s user manual for its location.

Conclusion

A washing machine that knocks during spinning is an annoying issue, but often fixable with some careful troubleshooting. By following this guide, you can hopefully identify the cause and resolve the problem yourself. If you’ve exhausted all DIY options and the noise persists, it’s time to call a qualified appliance technician. Don’t be afraid to try you might just save yourself a lot of money!