The World's #1 Vacuum Cleaner Advice, Repair, Discussion & Information Forum
Much more likely that the brushes have worn down, if you open it up it will be very easy to check them. All you need is a T20 driver to remove the top of the housing and a suitable socket to undo the nut on the fan: from memory it's 13mm. The outer metal cowling is simply tapped off around the rim, friction fit only.Remember that the nut on these is a left handed thread: you need to hold the fan steady and turn the nut clockwise to undo it.