I have a hoover U5780 900 less than one month old. When I first got it, it was very quiet. Now, however, when I engage the carpet agitattor, it makes a raatling sound like there is something stuck inside. I took of the baseplate, and there is nothing in there. It seems like the bar is coming in contact with the housing somehow.
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Re: Agitator bar makes a rattling sound when engaged.
If you have caught anything like shoes laces in it. you will have to replace the agitator and also the v-belt. when you catch something in the machine and don't have enough time to turn it off, it can cause the v-belt to cut into the v channel that the v-belt sitts in. hope this helps
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Likely a broken belt. Also check the agitator brush roll bearings (in either end under the end caps) for hair, strong, thread, etc. as this will make the brush roll harder to turn and wear/break belts prematurely. If all these check okay, then observe the tensioning roller that causes the V belt (runs from the idler pulley to the brush roller) to be sure it is swinging down when the handle is released to hold tension on the belt, causing it to rotate. These tensioning rollers can break, but often are locked into the "Bare Floor" setting without the user noticing. Slide the carpet brush roll selector (located on top, next to the floor height slide adjustment) back and forth and make certain it is all the way into the "Carpet" setting to allow the tensioning roller to engage. [Note: The tensioning roller is always retracted (in the neutral or off position) when the handle is in the upright position. You must release the handle to allow this tensioing assembly to engage.]
It's most likely the bushings/bearings in the beater bar (roller). The beater bar cover is fairly easy to remove -- take it off and investigate. Could be that the roller only needs lubricating on the ends. Also, check the belt to see if it's intact or damaged.
your belts need to be replaced on average every 6 months. you can find these at a vac shop or you can order them online from the company. agitator belt packet # 40201030 and the s.p. belt packet # 40201049
You will need to take the top off. It is easy: turn the vacuum over and look at the bottom (where you can see the beater bar). There are some deep screw "wells"; these are the screws you need to take out plus the 4 silver looking screws that hold the beater bar plate in place. When you bet those out, there there will be a "notch" at the front, behind the LED light you will have to disengage. Turn the vacuum back over and take the gray top off. You should be able to see the engagement latch that is attached to the handle. This is what opens and allows the flap to shut. It has a spring attached that may have come loose. Good luck.
if the belt is more than six months old then change it even if it is not broken. then replace your filters if that doesnt work than check the hoses for a clog drop a marble down them and make sure it comes out.
You probably should have replaced the flat belt(38528035) also. But the drive belt has a idler wheel(#13) to engage it, is it riding on the belt, if not if may have jammed to one side and able to spring up against the V belt. It could have broke also.