Things You'll Need
Miele canister vacuum cleaners are equipped with power brushes, also called power heads. The cleaning end of the vacuum, equipped with a powered rotary brush, attaches directly to the vacuum cleaner hose. The rotary brush is powered off the motor by a rubberized vacuum belt. When the belt breaks due to typical wear and tear, the brush will no longer function.
Unplug the vacuum cleaner. Turn the power head over onto its back.
Remove the rotary brush cover by unlocking the screw locks located toward the back of the cover. Insert a screwdriver and give them half a turn counterclockwise to unlock.
Remove the roller cover and pull up the roller brush at the front. It will release from the main housing, and you will be able to slide the old drive belt, if still connected, off the end. Place the roller brush on the side.
Remove the four screws that attach the bottom of the roller brush housing to the top. Pull them apart and place the bottom housing cover off to the side.
Slide the old drive belt off the drive shaft gear on the motor. Push the new belt onto the motor shaft gear in the exact same way as it came off. Install the new belt with the toothed side gripping down so that it meshes correctly with the gears.
Slide the new belt over the end of the roller brush, and replace it inside the housing. Screw the top and bottom housings together, replace the roller brush cover and lock it down.