Samsung Washing Machine: loud knocking sound

Professional Repair Guide

What is this symptom?

Experiencing a loud knocking sound from your Samsung washing machine, particularly during the spin cycle? This could feel like the drum is thumping against the sides, even with a balanced load. Several factors may contribute to this issue, including unbalanced loads, worn tub bearings, or faulty suspension components.

Urgency: Medium

Important Tips for Samsung Models

  • Official documentation notes a short knocking immediately after mode changes (washing to spin) that is normal and not a defect.

Possible Causes

Unbalanced load

How to Identify: Noise occurs with uneven clothing distribution or heavy items on one side; may reduce when clothes are redistributed.

Part: Drum/load distribution

Worn or defective tub bearings / tub seal

How to Identify: Loud knocking/grinding during high-speed spin; inner drum moves excessively when manually pushed; possible water leakage near bottom.

Part: Tub bearing / seal

Faulty or worn suspension components (shock absorbers / suspension rods)

How to Identify: Excessive drum movement; loud knocking as drum hits cabinet sides; front-loaders may vibrate more.

Part: Shock absorbers / suspension rods

Drive pulley or belt issues

How to Identify: Knocking or irregular noise associated with motor-driven parts; belt slipping or pulley loose.

Part: Drive pulley / belt

Foreign objects in tub or pump

How to Identify: Rattling or knocking with items like coins or safety pins; checking tub/pump catch may reveal debris.

Part: Drum / pump

Normal operational knocking related to clutch transition

How to Identify: Short knocking/thumping immediately following mode transition (e.g., wash to spin that fades quickly.

Part: Motor clutch

DIY Solutions

Redistribute Clothing Load

Easy 2–5 minutes
  1. Stop the washer mid-cycle if safe to do so.
  2. Open the door and redistribute clothes evenly around the drum.
  3. Avoid overloading or washing only a few items; balance heavy and light items.
⚠️ Safety First: Only open the machine when it is safe and paused.

Level the Washer

Moderate 10–15 minutes
Tools Needed: level tool, wrench
  1. Use a level to check if the washer is sitting flat.
  2. Adjust the feet by turning to raise/lower each corner until level.
  3. Ensure firm contact with the floor.
⚠️ Safety First: Ensure power is off to avoid movement during adjustment.

Remove Foreign Objects from Tub/Pump

Moderate 15–30 minutes
Tools Needed: screwdriver, towel / container
  1. Unplug washer and locate pump filter or access panel.
  2. Open panel and check for debris or objects.
  3. Remove any found objects carefully and reassemble.
⚠️ Safety First: Disconnect power before accessing internal components.

Professional Repairs

Replace Tub Bearings and Seal

Estimated Cost: $150 - $400+ (parts + labor)

Replace Suspension/Shocks

Estimated Cost: $80 - $250

Inspect and Replace Drive Pulley or Belt

Estimated Cost: $50 - $200

When to Call a Professional

Loud knocking persists after balancing load and leveling
Noise accompanied by leaking or visible bearing failure
Drum moves excessively when manually pushed
Internal component failure suspected (belt, pulley, motor coupling)

Preventive Maintenance

  • Check load balance every wash: Noise and vibration due to unbalanced loads
    Frequency: Every use
  • Clean pump filter periodically: Foreign object noise and pump clogs
    Frequency: Monthly

Frequently Asked Questions

Why is my Samsung Washing Machine loud knocking sound?
The loud knocking sound may be due to an unbalanced load, worn tub bearings, or faulty suspension components.
How do I fix Samsung Washing Machine loud knocking sound myself?
Redistribute the load evenly, level the washer, or check for foreign objects in the tub or pump.
How much does it cost to fix loud knocking sound?
Professional repairs range from $50 to $400+, depending on the issue and required parts.
When should I call a technician for loud knocking sound?
If DIY solutions don't resolve the issue or if you suspect major component failure, it's best to call a technician.

References & Sources

Community Analytical Insights

Analysis based on real user discussions from appliance repair communities

Can I Fix This Myself?

70%
DIY Success Rate Difficulty: Either

Common Issues Reported by Users

  • Unbalanced load causing the drum to knock against the washer's frame
  • Worn or damaged drive belt leading to misalignment
  • Faulty suspension springs or shock absorbers not dampening the drum movement

User Suggested Solutions

  1. Redistribute the load evenly in the drum. Ensure that heavy items are balanced with lighter ones to prevent knocking.

  2. Inspect and replace the drive belt if it is worn or damaged. Disconnect the power, remove the back panel, and replace the belt as necessary.

  3. Check the suspension springs and shock absorbers for wear. Replace any faulty components to restore proper drum movement.

Analysis based on 1 community discussions
View Sources

Data compiled from real discussions on r/appliancerepair and r/Appliances:

  1. Is it worth repairing my 10-year-old Samsung washing machine...

Community Discussions

loud knocking sound when turning

Replaced with a nearly new washing machine after the drive belt was chewed.

Pro needed View on Reddit →

Source: Reddit r/appliancerepair

User Comments (0)

Share your experience or solution below.

Be the first to comment!