Does anyone have an explanation or solution to the brushrolls seizing up on these heads? Typically they spin for a few seconds and then seize at the open end where the motor casing fits closely up to them, at the spring end.
I've had several machines in recently with this problem. After cleaning, if they still seize, I've swapped the brushroll for a new one, but the problem persists. It's not a motor issue, as with the brushroll removed, the motor shaft spins freely. It's not a brushroll bearing issue, as the bearings are checked and are moving freely too.
I've even resorted to sanding down the inside end of the brushroll where it contacts the motor casing, and applying a little grease to the sanded area, but it's not helping.
With new heads at £60-70 a time, it would be great to find a fix for this, rather than just telling customers that they need a complete new head?