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Bosch WFL1662 - knocking noise


EssCee

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Hi folks.

 

I have a nice clean secondhand Bosch WFL1662 front-loading washing machine.

During spin, and occasionally during wash rotation, there is a knocking noise inside.

I have removed the top of the machine and rocked the tub front-to-back on its springs, first on the right and then on the left side. There is knock/clack always on the right side, rarely on the left. It does not vary depending on rotation of the inner drum.

Also, when rotating the drum slowly, there is a squeak.

Otherwise, it's all working fine.

I have uploaded three videos describing this to the WeTransfer sharing site, links below.

I would appreciate suggestions on probable causes and recommended repairs. It will most likley be done by myself, as my budget is currently being spent on new, non-leaking gas pipes :D

 

Thanks,

Stuart

 

Test Rock Drum:
https://we.tl/t-0n1MCLakDo

Spin Rattle:
https://we.tl/t-ImYcSK5K1a

Squeak:
https://we.tl/t-iP4h7eotwo

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Hello Stuart. 

In order to find out where the noise is coming from you need to completely pull the washing machine out and remove the back panel. It should be very obvious once you have full access to the entire machine. At the moment all you can tell is that something either at the back or at the bottom of the machine out of sight is causing the noise.

Ideally you should disconnect the washing machine from the mains. Then you can freely shake and pull without fear of electrocution. Be careful as some of the parts can be very sharp inside. So either wear something like garden gloves, or just handle everything very carefully.

You should be able to tell if something is loose. It could be anything, like the motor not fixed properly to the drum, a bolt coming loose, one of the tub weights being loose. There could be a problem around the suspension or the chassis.

The washing machine does sound generally quite noisy on top of the specific noise. That could be the motor that's getting noisy. Regarding the squeaking noise, that could be the lip of the drum catching on the back of the door seal. Check all around the door seal at the back where it is close to the drum and see if you can identify any point where the drum lip is catching the seal.

If it isn't caused by the drum lip catching on the door seal then the most likely alternative explanation is that the drum bearing seal is making that noise. There's nothing much you can do about that apart from a complete strip down and replace all the seals and bearings. It may not even be possible to replace seals and bearings independently. Many washing machines now come only as a complete outer drum with the bearings and seals already fitted. If they are available though it is still a very big job and potentially risky in an old washing machine.

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Warning:  Read this before attempting any diy repairsNo representations or warranties are made (express or implied) as to the reliability, accuracy or completeness of advice. I can't be held liable for any loss arising directly or indirectly from the use of, or any action taken in reliance on, any information on this website, which is given free of charge and in good faith.

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Well, as near as I can make out, it's the shock absorbers.

The ballast weights are not moving, the sound isn't coming from within the tub, or from the belt wheel. I can't see anything else moving.

Rattling the shock absorbers by hand from below (as opposed to rocking the tub from above) produces a similar sound.

What's the hardest part of replacing them?

Also, the squeak does indeed appear to be the drum on the door seal. Can (or should it) this be lubricated?

 

Thanks,

Stuart

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Hello Stuart. The shock absorbers should be quite straightforward to replace. The washing machine will be laid down on its front to do it. I would disconnect the washing machine from the mains and the plumbing, take off the back panel and lid, and then carefully lay it down. Just have a good look at how they are fixed on. They should just be bolted at the base. Make sure the noise isn't coming from a cracked chassis where they fix. Or a loose welded spot on the chassis. The critical thing is to observe how they are fixed to the tub. See if you can get in there with a spanner. You can buy washing machine spares from  4Washerhelp with next day delivery option.

Regarding the door seal. It could just be that it is worn and gone floppy at the back and is now catching on the drum. It might be possible to gently and carefully trim a little part of the seal that is catching with a sharp blade. If it's really bad it might need replacing. Make sure the drum isn't badly out of shape or loose on the shaft.

Need a repair or spare parts? 

Book a Repair | Buy Spares (Cheapest prices guaranteed)

Warning:  Read this before attempting any diy repairsNo representations or warranties are made (express or implied) as to the reliability, accuracy or completeness of advice. I can't be held liable for any loss arising directly or indirectly from the use of, or any action taken in reliance on, any information on this website, which is given free of charge and in good faith.

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