At a glance
Symptoms
- • High-pitched squeaking or squealing during the cycle
- • Rhythmic thumping or rumbling, especially when first started
- • Harsh metal-on-metal grinding or scraping sounds
- • Loud rattling coming from the back or bottom of the unit
- • A roaring noise that gets louder the longer the dryer runs
- • Vibration that shakes the floor or adjacent washer
Common causes
- • Worn or flat-spotted drum rollers (causes thumping/rumbling)
- • Failing idler pulley bearing (causes high-pitched squeaking)
- • Worn drum glides or slides (causes metal-to-metal scraping)
- • Cracked, frayed, or slipping drum belt (causes thumping or squealing)
- • Loose blower wheel or debris trapped in the blower housing (causes rattling)
- • Failing drive motor bearings (causes a loud, continuous roar)
Safety First — Read Before You Start
- •Always unplug the dryer from the wall outlet before removing any panels. 240V electrical shocks can be fatal.
- •If you have a gas dryer, turn off the gas supply valve before moving the unit. Never attempt to disconnect or repair internal gas lines yourself.
- •Wear heavy-duty work gloves. The internal sheet metal edges of a dryer cabinet are notoriously sharp and will easily slice bare hands.
- •Dryers are heavy. If your dryer is stacked on top of a washer, get a helper to safely lift it down before beginning repairs.
- •Never bypass thermal fuses or safety switches during reassembly. They are critical fire-prevention components.
Tools & supplies you'll need
- Phillips and flathead screwdrivers
- 1/4-inch and 5/16-inch nut drivers or socket set
- Stiff putty knife (for popping top panels)
- Shop vacuum with a crevice tool
- Work gloves to protect against sharp sheet metal
- Needle-nose pliers
- Dryer maintenance repair kit (specific to your model)
Step-by-step instructions
Diagnose the Specific Noise
Before taking anything apart, run the dryer empty for a minute to pinpoint the sound. A rhythmic thumping that goes away after a few minutes is usually a flat spot on a drum roller (common in garage-kept units in colder California winters). A continuous, ear-piercing squeak is almost always a dry or failing idler pulley. A harsh metal-on-metal scraping at the front of the drum points to worn drum glides. A rattling sound from the lower back indicates something is caught in the blower wheel or the wheel itself is loose. Knowing the sound helps you buy the right parts—often, it is best to purchase a complete 'Dryer Maintenance Kit' ($25-$60) that includes rollers, an idler pulley, and a new belt.
Tip: Record the sound on your phone. If you end up needing to call a pro, playing that audio for the dispatcher can help them arrive with the exact right parts.
Disconnect Power and Access the Cabinet
Safety first: unplug the dryer. For gas models, shut off the gas valve at the wall. Pull the dryer away from the wall to give yourself working room. The method to open the cabinet varies by brand. For many Whirlpool/Kenmore models, you'll clean out the lint screen, remove the two screws under the screen lid, and use a putty knife to pop the front clips holding the top panel down. Lean the top back against the wall. Then, disconnect the door switch wire harness and use a 5/16-inch nut driver to remove the bolts holding the front panel to the cabinet. Carefully lift the front panel off its bottom clips and set it aside.
âš Warning: If your dryer is stacked in a tight laundry closet (very common in LA and SF condos), you must unstack it to work on it safely. Do not attempt to pull the front panel off while it is teetering on a washer.
Release the Belt and Remove the Drum
With the front panel off, you will see the drum and the belt wrapping around it. Reach under the drum toward the back (or front, depending on the model) to locate the idler pulley and motor shaft. Push the spring-loaded idler pulley arm to the side to release the tension on the belt, and slip the belt off the motor pulley. Once the belt is free, use the belt as a handle to lift the heavy drum slightly upward and pull it straight out of the cabinet. Set the drum aside on a soft surface so you don't scratch the exterior or damage the front felt seal.
Tip: Take a photo of how the belt is routed through the idler pulley and motor shaft before you remove it. The 'S' routing can be confusing when it's time to put it back together.
Clean the Interior and Inspect the Blower Wheel
With the drum removed, you will likely see years of accumulated lint, dust, and lost coins. This is especially true for dryers installed in dusty garages or older homes. Use your shop vac to thoroughly clean the entire interior cabinet, the motor, and the heating element housing. Next, locate the blower wheel housing. Check for loose change, screws, or heavy lint blockages that might be causing a rattling noise. Give the blower wheel a spin by hand; it should turn smoothly with the motor. If the wheel wobbles on the motor shaft, it is stripped and needs to be replaced.
âš Warning: Do not use compressed air to blow out the cabinet. You will just force highly flammable lint deeper into the heating element or motor windings.
Replace the Drum Rollers and Idler Pulley
Inspect the drum rollers (usually two in the back, sometimes two in the front depending on the brand). If they are worn, wobble on their shafts, or don't spin freely, they must be replaced. Use a small screwdriver to pop off the triangular retaining rings holding the rollers in place. Slide the old rollers off, clean the metal shafts with rubbing alcohol, and slide the new rollers on. Never apply WD-40 or grease to these shafts; lubricants attract lint and will cause the new rollers to seize prematurely. Next, remove the bolt holding the idler pulley assembly to the floor of the dryer and install the new idler pulley. This resolves 90% of dryer squeaks.
Tip: Always replace all the rollers at the same time, even if only one looks bad. If one failed, the others are right behind it.
Check and Replace Drum Glides or Felt Seals
If your noise was a scraping sound, examine the front bulkhead (the panel you removed in step 2) or the front lip of the drum. You will see plastic or Teflon glides, or a thick felt seal. If the plastic glides are worn down to the metal rivets, or the felt is torn and missing, the metal drum has been scraping against the metal bulkhead. Drill out the old rivets or unclip the old glides and install the new ones. If replacing a felt seal, scrape off the old adhesive, apply the high-temp adhesive included in your kit, and clamp the new felt in place until it dries.
⚠Warning: If the drum has been scraping metal-on-metal for too long, it can actually wear a groove into the drum itself, which may require replacing the entire drum—a costly repair.
Reassemble and Test
Place the new belt around the drum (ribbed side facing the drum). Carefully lift the drum back into the cabinet, resting it on the rear rollers. Reach underneath, pull the belt tight, and thread it through the new idler pulley and around the motor shaft using the photo you took earlier as a guide. Turn the drum by hand for two full rotations; this aligns the belt on the drum. Reattach the front panel, reconnect the door switch harness, and secure the top panel. Plug the dryer back in, turn on the gas if applicable, and run a test cycle. The dryer should now sound smooth and quiet.
Brand-specific notes
Some brands have known design quirks worth knowing about before you start.
Samsung
Samsung dryers are notorious for early drum roller failure, often presenting as a heavy, rhythmic thumping. They use four rollers (two front, two rear). Always buy the OEM DC97-16782A roller kit; cheap aftermarket rollers on Amazon frequently fail within three months due to inferior rubber compounds.
LG
LG dryers commonly suffer from a rattling noise caused by a loose blower wheel. The plastic hub of the wheel strips out on the metal motor shaft. If you hear a loud rattle that persists for a few seconds after you turn the dryer off, check the blower wheel first. Replacing it requires a 14mm socket and locking pliers.
Whirlpool
The classic 29-inch Whirlpool (and Kenmore) design is the easiest dryer in the world to work on. The lint filter is on top. A standard maintenance kit (part number 4392065) costs about $35 and replaces the belt, rear rollers, and idler pulley. It takes about 30 minutes to rebuild the entire drive system.
GE
Older GE dryers use a unique front bearing glide assembly instead of front rollers. When these plastic glides wear down, the drum drops slightly and scrapes the metal front panel, causing a horrific screeching/grinding noise. Inspect the top front edge of the drum; if you see metal shavings, order a new top bearing kit immediately.
Maytag
Modern Maytag dryers share internal components with Whirlpool, but older 'Dependable Care' models use a distinctive two-belt system and a heavy-duty motor. If an older Maytag is squeaking, it's often the radial thrust bearing at the rear of the drum. This requires a specific bearing kit and a bit more teardown.
What our techs see most often
Out here in coastal areas like San Diego or Ventura, the salty humidity loves to rust out idler pulley bearings, causing a screech that will wake the dead. If your dryer is in an uninsulated garage, those cold winter mornings can cause temporary flat spots on the rollers—if the thumping stops after 5 minutes of running, that's your culprit.
When to call a professional
- → You suspect a gas leak, or the gas supply valve is corroded and won't turn off easily.
- → The noise is a loud, continuous electrical hum or roar, and the drum is incredibly hard to turn by hand (indicates a seized motor bearing).
- → The dryer is stacked in a tight closet, and you cannot safely lift it down to access the panels.
- → You've replaced the rollers, belt, and idler pulley, but the unit still makes a harsh grinding noise.
- → The power cord or internal wiring looks burnt, melted, or smells like ozone.
Dryer Maintenance & Replacement Tasks
Step-by-step guides for individual maintenance jobs related to this appliance.
How to Clean a Dryer Exhaust Vent (Fire Prevention)
How to Deep-Clean a Dryer Lint Trap Housing (Beyond the Screen)
How to Replace a Dryer Drive Belt
How to Replace an Electric Dryer Heating Element
How to Replace a Dryer Thermal Fuse
Frequently asked questions
How much does it cost to fix a noisy dryer?
If you do it yourself, a complete OEM dryer maintenance kit (belt, rollers, idler pulley) costs between $30 and $60 depending on the brand. If you hire a professional appliance repair technician, expect to pay between $175 and $300 for parts and labor, depending on your location and the specific parts needed.
Is it safe to run my dryer if it is squeaking?
No. A squeaking dryer is a warning sign that a moving part (usually the idler pulley or a roller) is failing. If you ignore it, the part will eventually seize. This will snap the drive belt or, worse, burn out the main drive motor, turning a $40 repair into a $250+ repair.
Why does my dryer thump loudly when I first start it, but then gets quiet?
This is very common. The rubber on the drum rollers can develop temporary 'flat spots' from the weight of the heavy metal drum sitting in one position for days. Once the dryer runs for a few minutes, the rubber warms up, expands, and rounds out again. If the thumping never goes away, the rollers are permanently worn and need replacement.
Do I have to replace all the rollers at the same time?
Yes. Drum rollers experience the exact same amount of wear and tear. If one has failed, the others are at the end of their lifespan. Replacing just one will throw the drum slightly off balance and cause the new roller to wear out much faster. Always replace them as a complete set.
Can I just use WD-40 on a squeaky dryer part?
Absolutely not. Never use WD-40, grease, or oil on dryer rollers or idler pulleys. Dryers process massive amounts of lint. Any wet lubricant will act like a magnet for lint and dust, creating a thick, sticky paste that will cause the bearings to seize up within weeks. Dryer parts are designed to run dry or use sealed, self-lubricating bearings.
Related Repair Guides
Dryer Drum Not Spinning: Causes and Fixes
When a dryer powers on, hums, or even heats up but the drum just sits there, the problem is almost always mechanical — a broken drive belt, a seized idler pulley, or a worn drum roller. The drive belt alone is responsible for over half the no-spin calls we run, and at $25 for the part it is one of the most cost-effective DIY repairs you will ever do.
Dryer Takes Too Long to Dry: Fix Guide
When your dryer technically works but a single load takes two or three cycles to come out dry, you are not dealing with a broken part — you are dealing with restricted airflow. Lint, kinked vents, and a dirty moisture sensor are responsible for the vast majority of slow-drying complaints, and almost all of them are 30-minute fixes with no parts at all.
How to Clean a Dryer Exhaust Vent (Fire Prevention)
A clogged dryer vent is a major fire hazard and the number one reason your clothes take forever to dry. This step-by-step guide walks you through deep-cleaning your exhaust duct from the back of the dryer all the way to the exterior wall hood.