I have a Sanitaire model S663. It came with the 12" Vibragroom I aluminum roller brush E-53272. Is the Sanitaire Vibragroom II 12" steel roller brush E-53270 interchangeable?

If the problem is the brushes aren't turning the belt might not have proper tension.

If not plug or wiring or switch, check the motor for bad,worn brushes.

It could be something has the hose constricted... You might want to do a little more cleaning inside other than just changing the bag... Have you seen the cat lately? Also check the roller brushes to see if they have something like string wrapped around the ends.
Have a nice day !!!

The brushroll is held onto that baseplate by the metal brackets on either end of it. You have to slightly bend them outward to remove the brushroll.

If you hear the brush moter running then the belt driving the roller has probably broken. It can be easily replaced by removing the brush plate underneath and pulling the roller out. Replacement belts are available on-line or may be available in hardware stores.Fit the new belt over the steel motor spindle first, then place the belt over the roller and insert the roller.
The belt will break if the roller gets jammed, so buy 2 belts and keep one as a spare.

Depending on the model you may have a single or two motor system. If it is not running well in carpet mode but still has suction check to see if the brush for the carpet head is turning. If not look for a red reset switch or spin the brush when the vac is shut off. It it spins freely the belt is either broken or badly stretched and needs replacement.

Does there seem to be good air-flow and suction? If not, look for a blockage somewhere. Otherwise (and more likely because of what you say about the sound), look to the brush roller. Does it rotate when the machine's switched on? If so, maybe the bristles are worn and no longer make contact with the carpet properly. If not, the belt that drives the brush roller is broken and must be replaced. Your Owner Manual will tell you how to do this.  Good luck!

THIS GEEN LIGHT MEANS THAT THE BELT HAS COME OFF. THE REPLACEMENT IS AS FOLLOWS: FLIP THE BRUSH (RUG RENOVATOR) OVER AND REMOVE THE SCREWS ON THE SILVER GUARD THAT KEEPS THE ROLLER IN PLACE. SLIDE THE ROLLER UP OUT OF THE SLOT, TAKING NOTE ON THE HALF MOON SHAPED SIDE. REMOVE THE OLD BELT(OR WHAT'S LEFT OF IT). PLACE THE BELT AROUND THE MOTOR SHAFT FIRST. THEN AROUND THE WOODEN BARE SPOT ON THE ROLLER. PUT THE ROUND(CIRCULAR) SIDE OF THE ROLLER IN FIRST, THEN CAREFULLY STRETCH THE ROLLER WHILE HOLDING IN THE ROUND SIDE IN ONE SIDE AND ROTATE THE ROLLER UNTILL THE HALF MOON LINES UP TO THE SLOT. PUSH IT DOWN INTO THE SLOT AND PUT THE ROLLER COVER BACK IN PLACE AND RE-INSTALL THE SCREWS. AND THERE YOU HAVE IT. HOPE THIS HELPS. PLEASE KEEP ME POSTED. THANK YOU FOR THE HONEST RATING AND FOR USING FIX-YA.

The bearings in your brush roll are bad. Replace the roller and walla problem solved!

Here is a online guide....it's for the G series Kirbys. They're similar enough that it should help. Pay special attention to the belt lifting process...it's exactly the same as for the Heritage II, and it's also where I think your problem lies. I have a Heritage II manual available too! Hope I have helped...
Marci

http://reviews.ebay.com/CHANGING-THE-BELT-ON-A-KIRBY-G3-G4-G5-GSIX-ULTIMATE-G_W0QQugidZ10000000003720039