The short answer
A dryer is a drum on rollers turned by a belt, with a blower wheel at one end. Almost every noise it makes comes from one of those four things, and the sound tells you which: squeal for rollers and idler, thump for the drum, rattle for the blower, grind for a bearing. On the BAMFC models the drum runs on rear rollers with a front glide strip, so a rhythmic squeal that rises with drum speed is worth reading as roller wear first.
What the noise sounds like
- A scraping sound from the front of the drum — Worn glides or felt seals letting the drum contact the bulkhead.
- A high whine from the motor end — Blower or motor bearing. It is steadier and less rhythmic than a roller squeal.
- The noise stops when the machine is empty — Then it is the load rather than the machine, and a rebalanced load proves it.
- A rhythmic squeal that rises with the drum — Rollers or the idler pulley. It usually starts intermittently and becomes constant.
- NEAR MISS — The drum will not turn at all — That is a belt or motor fault and it belongs on the page about a dryer that will not start.
The ranking that matters here
- Something loose in the drum or the blower — Coins, buttons, zip pulls and underwires fall through the drum seal into the blower housing, where they clatter against the wheel every revolution. It is first because the sound is distinctive and the consequence of ignoring it is the largest. The brand-generic page leads with worn drum support rollers; here something loose in the drum or the blower takes that place.
- Worn drum support rollers — Ignored, they eventually seize, and a seized roller takes the belt with it.
- The idler pulley or the belt — This is the second classic squeal on a dryer and it is often replaced at the same time as the belt.
- Worn front glides or felt seals — The front of the drum rides on plastic glides and a felt seal. When they wear through, the drum scrapes on the bulkhead.
Check in this order, and why
- First — empty the drum and run it briefly — With the drum empty and the filter out, run the machine for a few seconds. A clatter that persists with nothing inside points at the blower housing rather than the load. The order runs from the parts that wear fastest to the ones that rarely fail, which is also roughly the order of how loud the warning is.
- Second — listen for a rhythm tied to drum speed — A squeal or thump that repeats in time with the drum is the drum support system. Turning the drum by hand with the power off often reproduces the roughness.
- Third — note whether the squeal is constant rather than rhythmic — An idler squeals steadily whenever the belt is moving, which distinguishes it from the once-per-revolution rhythm of a roller.
- Fourth — listen at the front of the drum — A scrape or rub from the door end, rather than from behind, points at worn glides or a failed felt seal — and a failed seal also leaks lint into the cabinet.
Power off before panels come off
Safety
Unplug the dryer or switch off its breaker before any panel comes off — a capacitor in the control can hold a charge after the power is off, and an electric dryer sits on a high-current circuit. Lint is the fire risk on this appliance: clean the filter every load and clear the vent duct regularly, and never run a dryer with the duct disconnected or crushed. On a gas model, leave the burner and the supply alone — that is licensed work — and if you smell gas, switch nothing, leave the building and call the gas utility or your emergency number from outside.
Where the owner job ends
Call when the noise is rhythmic and tied to the drum, when it has become a grind, or when the drum feels rough to turn by hand. Stop using the machine and call promptly if there is a burning smell or a metallic grinding: a seized roller can take the belt and the motor with it.
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Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
