Washer Knocking When Spinning

Introduction

Is your washing machine sounding like it’s about to take off during the spin cycle? That knocking sound is a sign something isn’t right and needs your attention. While it might seem alarming, often the problem is something you can diagnose and potentially fix yourself. Ignoring it can lead to more serious damage to your washer or even damage to your floor. This guide will walk you through common causes and how to troubleshoot them, even if you’ve never worked on an appliance before.

Common Causes of Washer Knocking When Spinning

Here are some of the most frequent culprits behind that knocking noise:

• Unbalanced Load: Clothes bunched up on one side create uneven weight distribution.
• Washer Not Level: If the machine isn’t sitting squarely on the floor, it will rock during the spin.
• Shipping Bolts: These bolts, used for transport, MUST be removed before use.
• Worn Suspension Rods: These rods help stabilize the drum; worn ones can cause excessive movement.
• Damaged Snubber or Dampening Pads: These pads cushion the drum’s movements; damage allows more noise and vibration.
• Loose or Worn Drive Pulley: This pulley connects the motor to the drum; if loose, it can cause knocking.
• Foreign Object in Drum: Small items (coins, buttons) stuck between the inner and outer drums.
• Worn Drum Bearing: A worn bearing results in excessive play and noise.

Symptoms Checklist

Confirm the issue and narrow down the cause by checking these symptoms:

• Knocking noise only occurs during the spin cycle.
• The washing machine shakes violently during the spin.
• The machine walks or moves across the floor.
• You notice unusual vibrations.
• The knocking sound changes with different load sizes.
• There are visible signs of wear or damage on the machine’s components.

How to Fix Washer Knocking When Spinning Step-by-Step Guide

Follow these steps to troubleshoot your knocking washer:

1. Check the Load Balance: Stop the washer, redistribute the clothes evenly inside the drum, and restart the spin cycle.
2. Level the Washer: Use a level to check if the washer is sitting evenly. Adjust the leveling feet (usually located at the bottom corners) until the bubble is centered.
3. Inspect for Shipping Bolts: If you recently purchased the washer, ensure all shipping bolts (usually located at the back) have been removed. Refer to your owner’s manual for specific locations and removal instructions.
4. Check the Floor: Make sure the floor is solid and doesn’t have any soft spots. A weak floor can amplify vibrations.
5. Clean the Washer: Run an empty wash cycle with a washer cleaner to remove buildup and potential obstructions.
6. Examine the Suspension Rods: (Unplug the washer first!) Open the top or back panel (depending on your model) and visually inspect the suspension rods for signs of wear or damage. They should be firm and in good condition.
7. Inspect Snubber Pads/Dampening Pads: (Unplug the washer first!) Check for worn, cracked or missing pads that dampen the tub’s movement. These are usually located near the bottom of the washer.
8. Check for Foreign Objects: (Unplug the washer first!) Use a flashlight to look for any objects stuck between the inner and outer drums. You may need to manually rotate the drum to inspect the entire circumference.
9. Inspect the Drive Pulley: (Unplug the washer first!) Locate the drive pulley at the bottom of the washer and check if it is securely attached to the motor shaft. Look for any signs of looseness or damage.
10. Run a Calibration Cycle: Some washing machines have a calibration cycle that helps them adjust to the load. Consult your owner’s manual for instructions on how to run this cycle.
11. Check the Water Level: Make sure the water level is appropriate for the load size. An incorrect water level can affect the balance of the drum.
12. Reduce Load Size: Overloading the washer can cause imbalance and excessive noise. Try washing smaller loads.
13. Listen Carefully: While the washer is running (and knocking), try to pinpoint the location of the noise to narrow down the potential source.

Fix the Issue Without Buying Parts

Often, you can resolve the knocking issue without replacing anything:

• Reset the Washer: Unplug the washer for a few minutes, then plug it back in. This can sometimes reset the control panel and resolve minor issues.
• Deep Clean: Regular cleaning prevents buildup that can contribute to imbalance and noise.
• Recalibrate: Use the calibration cycle if your washer has one.
• Routine Inspections: Check the leveling and load balance regularly.

When Replacement Might Be Necessary

If the knocking persists after trying the above steps, it may indicate worn-out parts. Common culprits include:

• Suspension Rods: $30 – $80 per set.
• Snubber Pads/Dampening Pads: $10 – $30 per set.
• Drum Bearing: $50 – $150 (this is a more complex repair and might require professional assistance).

Safety Warning

• Always unplug the washing machine before performing any repairs.
• Be careful when moving the washing machine; it can be heavy. Get help if needed.
• Avoid working on electrical components if you are not comfortable.
• Clean up any spilled water to prevent slips and falls.

Tools You May Need

• Level
• Adjustable wrench
• Screwdrivers (Phillips and flathead)
• Pliers
• Flashlight
• Gloves

FAQ

Here are some common questions:

• Q: Why is my new washer knocking? A: Make sure you’ve removed all the shipping bolts.
• Q: How do I know if the suspension rods are bad? A: Visually inspect them for damage, and check if they feel loose or wobbly.
• Q: Can I still use the washer if it’s knocking? A: It’s not recommended, as it can cause further damage.
• Q: How often should I clean my washing machine? A: At least once a month, or more frequently if you use a lot of detergent.

Conclusion

A knocking washing machine can be a nuisance, but with a little patience and these troubleshooting steps, you can often diagnose and fix the problem yourself. Before calling a technician, try these solutions. You might just save yourself time and money!

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