If the brush roller stalls when it comes into contact withthe carpet, it might be that the tensioner spring has broken off. This is adesign flaw in the Eureka4870. The symptoms are: 1) brush spins until it contacts the carpet then itstalls, 2) the brush lever for setting floor/carpet is loose and lacks a firmsetting, 3) vacuum no longer has the feel of being self-propelled on carpet. Itis not very easy to repair and I don't know if a replacement tensioner iscommercially available. To fix it yourself:
It now works as good as it every did. I will next be seeking a replacement tensioner device from Eureka or a shop, since Isuspect this modification may eventually weaken and break. The plastic springanchor points are definitely a poor design by Eureka.
Were you able to locate a replacement tensioner device? Our Vacuum is exhibiting the exact same symptoms and I'd like to fix it rather than just put a band-aid on the problem, if possible.
hey localsaint...I had the same problem and found the spring loose in the machine and I have no idea where it is supposed to attach...I am also a little unfamiliar with the name of some of the parts Can you provide any more detail
I never looked for the original replacement part. My described fix is still working fine after 3 years. Also, note that the flaw is a poor design with a spring anchor that is too weak and not up to the task (as opposed to a defect in manufacturing or assembly). So a roriginal replacement part will have the same weakness and risk.
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Please be sure the roller turns freely. You might want to remove it and clean any debris found on or around it. At each end you will see a holder that keeps the roller brush in the frame of the vacuum. These parts should turn freely at the end of the roller brush. If they do not, add a bit of WD40 and turn by hand until they are moving without resistance.
Might also be a good idea to put on new belts as well.
Paul
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