Repeating thump
A steady bump-bump-bump once every drum turn, often worse with towels or jeans.
Start here: Run the dryer empty for a minute. If the thump is still there, suspect a worn dryer drum roller or something stuck to the drum path.
Dryer noise troubleshooting
Dryer Drum Making Loud Noise
Direct answer: If your dryer drum is making a loud noise, the most common causes are something caught in the drum path, a worn drum support part, or a belt and pulley issue. Start by identifying the sound: thump, squeal, scrape, or rumble.
Most likely: On most dryers, a repeating thump or rumble comes from worn dryer drum rollers, while a high squeal often points to a worn dryer idler pulley or a belt rubbing where it should not.
A dryer that suddenly gets loud usually gives you a pretty honest clue. A flat-spot thump, a metal scrape, or a sharp squeal each narrows the list fast. Reality check: a dryer can keep running for a while with bad support parts, but it usually gets worse, not better. Common wrong move: running several more loads to “see if it clears up” can chew up the belt, drum, or front supports and turn a small repair into a bigger one.
Don’t start with: Don’t start by ordering a motor or control part. Loud drum noise is usually mechanical and visible once the drum support path is checked.
If the noise changes with load size,start with an empty-drum test before opening anything.
If you hear scraping metal or smell hot rubber,stop using the dryer until the drum support path is checked.
Last reviewed: 2026-04-28
Match the sound before you chase parts
High squeal or chirp
A sharp squeak at startup or while the drum is turning.
Start here: Listen near the lower front or rear of the cabinet. This usually fits a worn dryer idler pulley, belt edge rub, or dry front drum glides.
Metal scrape
A dragging or grinding sound, sometimes with shiny marks inside the drum.
Start here: Stop using it and inspect the drum opening and baffles first. A failed dryer drum glide or a loose item caught between drum and bulkhead is common here.
Deep rumble or growl
A rough rolling sound that gets louder as the dryer warms up.
Start here: Check for worn dryer drum rollers or a drum riding out of position. This is more than normal dryer hum.
Most likely causes
1. Worn dryer drum rollers
This is the most common cause of a loud rumble or repeating thump. Rollers develop flat spots or rough bearings, and the drum rides hard on them.
Quick check: Turn the drum by hand with power disconnected. If it feels rough, lumpy, or noisy, the rollers move to the top of the list.
2. Worn dryer idler pulley or damaged dryer belt
A squeal, chirp, or rubbery rubbing sound often comes from the belt path. The idler pulley bearing dries out or the belt frays and tracks badly.
Quick check: If the noise is sharpest at startup and changes as the drum gets moving, inspect the belt and idler area next.
3. Failed dryer drum glides or front support strips
When front supports wear through, the drum can scrape metal-to-metal or sag at the opening. You may see wear dust or scoring near the front rim.
Quick check: Look at the front drum opening for felt damage, missing glide material, or shiny scrape marks.
4. Item caught in the drum path or loose drum hardware
Bra wires, screws, coins, or a loose baffle can make a loud scrape or clack that sounds like a major failure.
Quick check: Spin the drum slowly by hand and look for one exact spot where the noise repeats or catches.
Step-by-step fix
Step 1: Start with the easy outside checks
A surprising number of loud dryer noises come from the load, the drum itself, or something trapped where you can reach it without taking the machine apart.
- Unplug the dryer before putting hands inside the drum area.
- Empty the dryer completely and check the drum for coins, screws, bra wires, zipper pulls, and anything stuck in the drum holes or seams.
- Press on each dryer drum baffle from inside. If one feels loose or clicks, that can be the noise.
- Look at the front drum opening for fabric, strings, or debris rubbing the edge.
- Spin the empty drum by hand and listen for scraping, rough spots, or one repeat point each turn.
Next move: If you remove a trapped item or tighten a clearly loose baffle and the noise is gone, run a short empty cycle and then a small load to confirm normal operation. If the noise remains with an empty drum, move on to separating the sound type and checking the support parts.
What to conclude: An empty-drum noise points away from laundry and toward the drum support path, belt path, or a trapped object you cannot see from the front.
Stop if:
- You see scorch marks, melted plastic, or belt dust collecting heavily inside the drum opening.
- The drum binds hard and will not turn smoothly by hand.
- You find sharp metal damage that could cut clothing or hands.
Step 2: Separate thump and rumble from squeal and scrape
The sound pattern tells you where to spend your time. Rollers, glides, and pulley problems do not usually sound the same.
- Plug the dryer back in and run it empty for 30 to 60 seconds only.
- Listen for a low thump or rumble versus a high squeal or a metal scrape.
- Note whether the noise is worst at startup, steady the whole time, or tied to one spot in each drum rotation.
- Shut the dryer off and unplug it again before opening any panels.
Next move: If you can clearly label the sound, the next inspection is much faster and you are less likely to buy the wrong part. If the noise is mixed or hard to place, inspect both the drum rollers and the front drum support area before deciding.
What to conclude: Low rolling noise usually fits dryer drum rollers. A sharp squeal leans toward the dryer idler pulley or belt. A scrape at one point in the turn often fits worn dryer drum glides or a caught object.
Step 3: Inspect the drum support path
Once outside checks are done, the most productive inspection is the path that physically supports the drum as it turns.
- Disconnect power and open the access panel or cabinet section needed for your dryer design.
- Check the dryer drum rollers for flat spots, wobble, seized bearings, or heavy wear.
- Inspect the front drum support area for worn dryer drum glides, missing glide pads, damaged felt, or shiny metal rub marks.
- Look for black rubber dust, frayed belt edges, or signs the drum has been riding out of position.
- Turn the drum by hand while watching the support points if accessible.
Next move: If you find rough rollers, missing glides, or clear rub marks, you have a solid repair direction and can replace the failed support parts. If the support path looks sound, inspect the belt and idler pulley next before blaming the motor.
Step 4: Check the dryer belt and idler pulley
A worn pulley or damaged belt often makes the sharpest noises, especially on startup or as the drum first takes load.
- Inspect the dryer belt for frayed edges, glazing, cracks, or sections worn thin.
- Spin the dryer idler pulley by hand. It should turn smoothly without grinding, wobble, or squeal.
- Check whether the belt has been riding off-center or rubbing a bracket.
- If the belt is damaged, inspect the pulley and drum supports too, because belts usually fail for a reason.
Next move: If the idler pulley feels rough or the belt is visibly damaged, replace the failed belt-path parts before running the dryer again. If the belt and pulley look good and the noise is still clearly from the drum area, go back to the rollers and front support parts with a closer look.
Step 5: Replace the failed support part, then verify with an empty run
Once the bad part is identified, the best finish is to replace only the worn component set that matches the evidence and then confirm the sound is gone before doing laundry.
- Replace worn dryer drum rollers if you found flat spots, rough bearings, or rumbling support wheels.
- Replace worn dryer drum glides if the front support is scraped through, missing material, or letting the drum ride on metal.
- Replace the dryer idler pulley if it squeals, grinds, or wobbles by hand.
- Replace the dryer drive belt if it is frayed, glazed, or damaged, especially if it has been rubbing off-center.
- Reassemble the dryer, run it empty for several minutes, then dry a small load and listen for any remaining noise.
A good result: If the dryer runs smoothly empty and with a small load, the repair is complete.
If not: If the same loud noise remains after the worn support part is replaced, stop and inspect for a second failed support part or a motor or blower issue that needs a deeper teardown.
What to conclude: Dryers often wear more than one support part at the same time. If one part was badly worn, its partner parts may be close behind.
Replacement Parts
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FAQ
Why is my dryer drum suddenly making a loud thumping noise?
A sudden repeating thump usually means a dryer drum roller has developed a flat spot, or something is stuck in the drum path. Start with an empty-drum spin test and a close look for trapped items before opening the cabinet.
Can I keep using a noisy dryer for a few more loads?
It is better not to. A worn roller, glide, or idler pulley usually gets worse fast, and continued use can damage the dryer belt, drum edge, or front support area.
What does a dryer idler pulley sound like when it is bad?
Most bad dryer idler pulleys make a sharp squeal, chirp, or dry bearing sound, especially at startup. Some also wobble or grind when spun by hand with the dryer unplugged and opened up.
Is a loud dryer noise usually the motor?
No. On most dryers, loud drum noise is more often caused by rollers, glides, the belt, or the idler pulley. Motor problems are less common and usually show up after the drum support path checks out.
Why is my dryer scraping metal inside the drum opening?
That usually means the front drum support has worn through, often because dryer drum glides are missing or badly worn. Stop using the dryer until you inspect that area, because metal-to-metal contact can damage the drum.
Should I replace just one dryer drum roller or all worn support parts together?
If one roller is clearly bad, inspect the others closely. Dryers often wear support parts together, and replacing only the worst one can leave another noisy part behind.