Kenmore Dryer Loud Banging — What’s Happening
A loud banging noise from a Kenmore dryer is a mechanical symptom, not a fault code. Kenmore dryers are built on several OEM platforms (Whirlpool, LG, Frigidaire), so the exact layout varies by model, but the banging usually comes from a worn or failing rotating part striking the cabinet or dragging during drum rotation. If the dryer still heats and dries but makes a loud thump, rumble, or bang, the problem is almost always in the drum support system, belt path, or blower rather than the control board or electronics.
Most Likely Causes
- Worn drum support rollers Drum rollers develop flat spots, wobble, or seize over time, causing a rhythmic thumping or banging as the drum turns.
- Broken or worn idler pulley The idler pulley maintains belt tension and can crack, wobble, or break entirely, creating a loud rattling or banging noise.
- Frayed or damaged drive belt A stretched, glazed, or frayed belt can slap against the drum or cabinet and produce intermittent banging.
- Worn drum glides or rear bearing Felt drum glides or the rear bearing surface wear through, allowing metal-on-metal contact and scraping or banging.
- Loose or damaged blower wheel A blower wheel that has loosened on its shaft or picked up debris wobbles and strikes the blower housing with each rotation.
- Drive motor mount or motor wear After common rotating parts are ruled out, a failing motor or loose motor mount can transmit vibration or banging through the cabinet.
How to Diagnose and Fix
- Unplug the dryer and run a short empty cycle first to verify the noise type (thump, rattle, scrape) and when it occurs during drum rotation.
- Remove the front or rear access panel (depending on your Kenmore platform) to expose the drum, belt, rollers, and idler pulley.
- Turn the drum slowly by hand and feel for roughness, dragging, or a periodic bump that indicates a worn roller or glide.
- Inspect the drive belt for glazing, fraying, stretching, or missing sections and replace if damaged.
- Check all drum support rollers for flat spots, wobble, or seized bearings and replace the full roller set if any roller is worn.
- Inspect the idler pulley for cracks, looseness, or a broken wheel and verify it spins freely without wobble.
- Inspect drum glides (front or rear) and the rear bearing surface for wear or metal contact points.
- Check the blower wheel for debris, looseness on the motor shaft, or wobble and replace if necessary.
Parts You Might Need
| Part | Notes |
|---|---|
| Drum roller kit | Amazon | Includes all support rollers and sometimes shafts. Replace the full set to keep wear even. |
| Idler pulley assembly | Amazon | Maintains belt tension. Must spin freely without play or noise. |
| Drive belt | Amazon | Match the exact length and width for your Kenmore model platform. |
| Blower wheel | Amazon | Plastic or metal fan on the motor shaft. Check for cracks or looseness. |
Related Error Codes
If your appliance also shows a code on the display, these match this problem:
- Kenmore Dryer F01 error code
- Kenmore Dryer F20 error code
- Kenmore Dryer F22 error code
- Kenmore Dryer F23 error code
- Kenmore Dryer F26 error code
- Kenmore Dryer F28 error code
- Kenmore Dryer F29 error code
- Kenmore Dryer F30 error code
- Kenmore Dryer F31 error code
- Kenmore Dryer F70 error code
- Kenmore Dryer F71 error code
- Kenmore Dryer F72 error code
When to Call a Pro
Call a technician if you are not comfortable removing cabinet panels or lifting the heavy drum assembly out of the cabinet. Drum roller and idler replacement requires partial disassembly of the dryer, and reassembly mistakes can cause belt tracking problems or further noise. If you replace common wear parts (rollers, idler, belt) and the banging persists, a technician should evaluate the motor, motor mount, and structural alignment before you invest in more parts.