The short answer
A dryer noise is placed by whether it follows the drum or the blower. A rhythmic thump that tracks the drum is a roller or a glide; a rattle or scraping that is constant is something in the blower; and a squeal under load is the idler or the belt. On a Roper dryer the cause that ranks first is drum support rollers worn.
What you observe
- A rhythmic thump that keeps time with the drum — Drum support: flattened rollers or worn glides.
- A squeal that starts with the drum and worsens with a heavy load — The idler pulley or a glazed belt.
- A rattle or scrape that is constant and does not follow the drum — Something in the blower wheel, most often a coin.
- NEAR MISS — a hum with no drum movement — That is a drive or start fault and belongs on the will-not-start page.
Causes, most likely first on a Roper dryer
- Drum support rollers worn — Rollers flatten and harden with age, producing a thump that keeps time with the drum and grows over months. Ranked first on this dryer, because it is the classic drum-support wear and it follows the drum exactly.
- Coin or debris in the blower — Small hard objects pass the lint filter, reach the blower and rattle against the housing continuously. Ranked second on this dryer, because it is common, it makes an unmistakable constant sound, and leaving it will chip the wheel.
- Idler pulley bearing dry — The idler keeps the belt tensioned and its small bearing is the part that squeals first.
- Front glides or felt seal worn — Worn glides let the drum run metal on metal at the front, giving a scraping that changes when the drum is loaded.
Check in this order, and why
- Note whether the thump keeps exact time with the drum rotation — That timing is what separates support wear from everything else.
- Note whether the noise is constant or keeps time with the drum — Constant means blower, and nothing else needs opening.
- Note whether the squeal appears with drum movement and worsens under load — That is the idler or the belt, and both live in the same place.
What an owner can safely check
- Unplug the machine and turn the drum slowly by hand, feeling for a flat spot or roughness — This is an assessment, not a repair.
About 15 min
- Unplug the machine, remove the lint filter and look into the housing with a torch — A coin visible in the filter recess can sometimes be lifted out before it reaches the blower.
Tools: torchAbout 15 min
- Empty the drum, check the lint filter housing and turn the drum by hand listening for a rattle — Check pockets and the filter recess, which is where coins collect before they reach the blower.
Tools: torchAbout 15 min
- STOP HERE if the next step needs a meter on live terminals or a panel off — That is where an owner check ends and a service call begins, whatever the ranking above says.
Before you open anything
Safety
Unplug the dryer or switch off its breaker before removing the lint filter housing, the back panel or anything else — a capacitor can hold a charge after the power is off. On a gas machine, shut the gas off at the appliance valve as well, and never disturb a gas connection: if you ever smell gas, do not switch anything on or off, leave the building, and call the gas utility or the emergency number from outside. Never run a dryer with a panel removed, and never reach into a drum that is still turning.
When to call a technician
Call when the drum is empty, the filter housing is clear, the machine is level and the noise remains, because rollers, idlers, belts and blower wheels are all behind the cabinet. Call sooner for a squeal that has been worsening, because a belt usually breaks not long after it starts complaining. Stop using the machine and call for any burning smell with a noise, since that combination points at a seized bearing rubbing under load.
Nearest pages of this class
What this page does not cover
This page is written for the Roper dryer as a class, not for one family or model line. Where a family- or model-specific page exists for your unit it is linked above, it is the more specific answer, and it is the one to read first. Deliberately not here: part numbers, wiring colours, panel removal order and torque figures, which differ between families under the same nameplate.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
