The short answer
A new noise from an FLD dryer almost always comes from one of the four parts that carry the drum: the rollers, the idler pulley, the belt and the blower wheel. Which one it is depends on whether the sound is rhythmic, continuous or intermittent, and on whether it changes when the drum is empty. Nothing on this list is dangerous, but a thumping rumble left alone costs more later.
What you observe
- A deep rhythmic thumping that keeps time with the drum — Drum support rollers with a flat spot. The rhythm matches drum rotation exactly, which is what makes it identifiable.
- A squeal that rises and falls with the drum speed — The idler pulley or a glazed belt. It is loudest at startup and often fades as things warm through.
- A scraping or grinding that changes with the load — Something caught between the drum and the bulkhead, or a worn drum glide. It appears and disappears as the load shifts.
- A rattle or a clatter from low in the cabinet — Usually the blower wheel, and usually because a coin or a button has found its way past the lint filter into the housing.
- NEAR MISS — the drum does not turn at all — That is a start fault rather than a noise fault, and the belt and motor checks belong on that page.
Causes, most likely first on the FLD models
- A coin or a button in the blower housing — Ranked first because it is the most common cause by a distance, the cheapest to fix, and the only one on this list that can be cleared without a wear part. It is also the noisiest.
- Drum support rollers worn flat — Second: wear parts with a predictable life, and the thumping they make keeps exact time with the drum. They fail gradually and get louder for months.
- The idler pulley or a glazed belt — Third: a squeal rather than a thump, loudest at startup. It is a cheap part and it is usually replaced together with the belt.
- Worn drum glides or seals — Last: a scraping that comes and goes with the load, and the only one here that can also mark clothing — which is often what brings people to it.
Check in this order, and why
- Run the machine empty and listen — First, because a noise that vanishes with an empty drum is a load or a glide problem, and one that does not is mechanical.
- Decide whether the sound keeps time with the drum — Second: a rhythm that tracks the drum is the rollers, and a sound independent of it is the blower. One question, two answers.
- Listen at the bottom of the cabinet versus at the drum — Third: the blower is low and forward, the rollers are behind the drum. Height alone separates them.
- Check for anything caught at the drum seal — Last of the owner checks, and it costs nothing but a torch.
Before you open anything
Safety
Unplug the dryer or switch off its breaker before reaching into the lint housing or turning the drum by hand — a capacitor can hold a charge after the power is off. Never reach into a blower housing on a machine that is plugged in, even if it is switched off at the panel.
When to call a technician
Call when the noise is mechanical and internal — rollers, idler or blower wheel — because all three sit behind the drum and reaching them means the cabinet comes apart. On an FLD dryer the honest line is the lint housing: what you can see and clear from there is yours, and what is behind the drum is not. Call sooner if the noise is accompanied by a burning smell or by marks appearing on clothing.
Nearest pages of this class
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
