You dont! there are no brushes on the tc71 it has an induction motor that starts with a capacitor. But to gain access to the motor remove the back panel which involves the fan and heater wiring etc all coming off first.
casper..http://www.selfix-uk.co.uk
December 2008
I can answer this question...
how to change brushes on hotpoint tmble dryer mode tc71?
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix washing machines.