Washing Machine Vibrating Violently During Spin

A washing machine that shudders, bangs against a cupboard or travels across the floor during the spin cycle is alarming and usually cheap to fix. There is a short list of causes, and they can be worked through in about fifteen minutes.

This guide covers them in order of likelihood, which is also roughly the order of how easy they are to resolve.

Transit bolt positions and suspension designs differ between machines, so the AEG owner’s manuals and guides for your exact model are worth opening before you remove anything.

1. Transit bolts still fitted

If the machine is new or has recently been moved, check this before anything else. Transit bolts lock the drum assembly to the casing for transport and must be removed before use.

Look at the rear panel for three to five bolts with plastic collars. Remove them and fit the blanking caps from the accessory pack. A machine spinning with transit bolts fitted transmits the entire drum movement directly into the casing, which produces exactly the violent shaking people describe.

Keep the bolts. A machine moved without them refitted can suffer internal damage in transit.

2. The machine is not level, or it rocks

Level and stable are two different things, and the second matters more.

Check level with a spirit level across the top in both directions.
Then push each corner in turn. Any rocking means a foot is not carrying load, and that corner will lift during spin.
Adjust the feet until the machine sits firmly on all four, then lock the nuts where fitted.
Re-check after the first spin, since machines settle.

A machine on a wooden suspended floor is harder to stabilise than one on concrete, and may move even when correctly levelled. An anti-vibration mat helps, and so does positioning against a solid wall rather than in the middle of a floor span.

3. The load is unbalanced

Modern machines detect imbalance and reduce spin speed rather than shaking, but a badly distributed load still causes movement, particularly at the start of a spin.

A single heavy item — a towel, a duvet, a pair of jeans — is the classic cause. Adding a few smaller items gives the drum something to balance against.
Overloading prevents redistribution entirely. The drum cannot rearrange a tightly packed load.
Items that absorb a lot of water, such as towels and bathmats, are much heavier wet and concentrate mass on one side.
Anything that can tangle — sheets, hoodies with drawstrings — can trap a heavy item in a bundle.

If the machine pauses and re-tumbles repeatedly before spinning, that is the balance routine working. It is a good sign, not a fault.

4. Something is caught, or in the wrong place

Check the drain pump filter behind the access panel at the front bottom. Coins, buttons and hair grips collect there, and a heavy object in the pump housing can cause noise and vibration.
Check for an item trapped between the drum and the outer tub. A distinctive symptom is a scraping or rattling noise that changes with drum speed.
Check that the machine is not touching adjacent units. A machine with a few millimetres of clearance can bang against a cupboard while appearing stable.

5. Worn suspension or bearings

If the machine has been fine for years and has gradually got worse, the problem is more likely to be mechanical wear.

Shock absorbers and suspension springs lose damping over time. The symptom is excessive drum movement that the balance routine cannot compensate for.
Drum bearings produce a rumbling or grinding noise that rises with spin speed, often accompanied by movement. A failed bearing eventually damages the drum and seal.
A useful test: with the machine off, grasp the drum at the top and pull it toward you, then push it back. Some movement is normal; a lot of movement, or a clunk, suggests worn suspension.
Spin the empty drum by hand and listen. Rumbling or roughness points to bearings.

Both are service repairs. Bearing replacement in particular is labour-intensive on many designs, and on an older machine the cost can approach replacement value.

Distinguishing the causes by symptom

Violent shaking from the very first spin on a new machine — transit bolts.
Movement that varies load to load — balance or levelling.
One corner lifting visibly — levelling or a rocking foot.
Rumbling that rises with speed and got worse over months — bearings.
A bang at the start of spin then settling — usually load distribution.
Scraping or rattling at any speed — a trapped object.

If you are unsure which of these applies to your machine, it is usually quicker to find a user manual for any device and check the suspension layout than to guess from the noise.

Preventing it

Do not overload. Half to three-quarters full is where most machines perform best.
Wash bulky single items with a few smaller ones.
Check the pump filter regularly, which also catches items before they cause damage.
Re-check levelling after any move, including sliding the machine out to clean behind it.
Empty pockets. Coins are the single most common foreign object found in pump housings.

Frequently asked questions

Is some vibration normal?

Yes. A high-speed spin moves a significant mass at speed and always produces some vibration and noise. The concern is movement, banging or a change from how the machine used to behave.

Will a lower spin speed solve it?

It reduces the symptom and leaves clothes wetter. It is a reasonable workaround while you investigate, not a fix.

Are anti-vibration pads worth using?

On suspended wooden floors they genuinely help. They are not a substitute for correct levelling.