Very loud motor then nothing

it will be the bearings at the end of the brushbar need replacing

Hey Mike! Excessive noise can be contributed to dirty filters or clogs. Here's a quick link to troubleshooting steps to assist you.

http://www.bissell.com/FAQDetail.aspx?id=1421&cid=ccsocial

It sounds like it is time to replace the motor. You might also want to think about replacing the unit itself since the motor can be very expensive in comparison to the cost of the vacuum itself. I would recommend thinking about a different brand like electrolux or hoover.

The bearing or the motor is warn out they last 15 years in the case. In some rare case the brush ware out or the rely can catch fire, most central vacuum are not made to be oiled! Hot oil will catch on fire. Best to unplug the vacuum unit call a few shops and ask replacement motor cost, if you remove the Vac and take to them it will cost less.

the motor bearings are starting to fail most likely. You can diagnose the source of the noise by removing the brushroll and belt, could possibly be the brushroll bearings but if you still get the noise when the belt is off its the motor.

If the belt is really worn it can cause that. I wold try changing the belt if you haven't recently. Here are the belts you need:

Hoover Elite Rewind Belts

Check the power lines coming into the suppley 9-10 the main feed came loose, you may have to solder the wire back, but there would be a short somewhere, or you ran the it to long while clogged and blew the bendix/motor

if this sounds like an airplane taking off, then for your hoover U5288-900 it will have to be the fan that is inside the motor compartment. i have looked at hoover.com and cannot find the part num. to the fan, but i know that you can replace it. you can also get one from your local vac shop. if you do get a fan for this and need help in changing it. write me back if you get stuck. hope this helps

If it sounds really high pitched or like a airplane i would bet your motor is shot in which case it would exceed cost of your unit.