How do I diagnose a noise problem with my Bissell Upright?

My Bissell CleanView Bagless is making excessive noise. This started after I replaced a broken belt. Is there a way to troubleshoot this problem to determine whether or not I need to replace the motor?
Negron, September 2004


done
TAKE THE BELT OFF THEN TRY IT WHAT SAUGHT OF NOISE IS IT IF IT IS VIBRATING THE HOOVER WITH THE BELT OFF THEN IT IS PROBERBLY YOUR MOTOR IF IT ONLY DOES IT WITH BELT ON THEN IT IS YOUR BRUSH ROLL ASHNASH2007@YAHOO.CO.UK

ASHNASH2007@YAHOO.CO.UK, July 2007
where do i get spares for my proheat 7920

john glover, October 2005
link Click here to see other fixes for Bissell Upright.