The short answer
On an NED dryer the usual explanation for abnormal noise or vibration is the parts the drum rides on rather than the motor: rollers, an idler and a rear bearing carry the whole load, they wear in a predictable order, and each one has its own sound. Work the order below rather than the order of expense: the two cheapest checks settle most of these before a tool comes out.
What you actually observe
- A rhythmic thumping that follows drum rotation — A flat spot on a drum roller, or something caught between the drum and the bulkhead.
- A rattle or ticking that changes with the blower rather than the drum — Something loose in the blower housing, most often a coin.
- The cabinet rocks and drums against the floor — Levelling and feet rather than anything inside the machine.
- A squeal that also comes with no heat — NEAR MISS: worth reading the heating page as well, because a restricted vent drives both.
- Body: Where a step below depends on which NED listing you own, the table above is the reference; nothing here is written from a model outside it.
Causes, most likely first on the NED platform
- 1. The tensioner that keeps the belt tight — The idler runs on a small bearing or bushing that dries out, and once it does the machine squeals for weeks before anything fails. A belt with a hardened or frayed edge adds a slap to it. It ranks higher on NED than on a narrow roster because NED5800D** works the same mechanical parts far harder than NED4600Y*+ does.
- 2. Drum support rollers — They are the highest-wear part on this appliance class, which is why they sit at or near the top of nearly every noise ranking. Second on NED: it takes longer to confirm than the cause above it, and it rarely arrives without warning.
- 3. How the machine stands — A dryer that is not sitting evenly walks and drums against the floor and against whatever is beside it, and the noise is often blamed on the drum.
- 4. Something loose in the blower housing — The give-away is that the noise tracks the blower rather than the drum, which is a much faster beat.
What to check first on these NED models, and why
- 1. Note whether the squeal rises and falls exactly with drum speed — That timing names the idler and the belt on its own.
- 2. Turn the drum by hand and listen for a rough spot per turn — A thump that keeps time with the drum is the rollers, not the motor.
- 3. Rock the cabinet by its corners with the machine off — A machine that rocks will drum, and it costs nothing to correct.
Before you open anything
Safety
Unplug the dryer or switch off its breaker before any panel comes off; a capacitor can hold a charge after the power is off, and a large appliance circuit is typically 30 A or higher at 240 V. The cabinet is heavy and its edges are sharp, so move it with help, and never run the machine with a panel off to hear a noise better. The NED roster covers six listings, NED4600Y*+ through NED5800D**, and what follows is common to all of them unless a step says otherwise.
Models in the NED family — The listings this family covers; it is a family page, not a model page.
Reference| Model number | Family key |
|---|---|
| NED4600Y*+ | amana:dryer:ned |
| NED4655E*+ | amana:dryer:ned |
| NED4700Y*+ | amana:dryer:ned |
| NED4705E*+ | amana:dryer:ned |
| NED5800D** | amana:dryer:ned |
| NED5800H** | amana:dryer:ned |
When to call a technician
The line is the cabinet. Levelling and a check of what is rattling are owner work; rollers, idlers, belts and rear bearings all mean the cabinet comes apart, and a machine that is scraping should not be run until it does.
The other symptoms covered for this family
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
