aquarius TDL52 dryer drum not spinning until i take top off and push it?

i have a hotpoint aquarius TDL52 that is not working. the drum does not spin empty or with a few bits in it. it makes the right noises so i took the top off to check the belt and it looked fine. i plugged it in and put on a 10 min cycle and it didn't move until i gave the drum a bit of a push and it got going. when it stopped during the cycle it wouldn't get going again until another push. i suspect that if there are brushes on the motor it would be the thing to go after next. does anyone have a PN for these if they are on the motor???
thanks