When I turn the mixer on, the dough hook go around but will not rotate. The nut will not stay tight where the beaters go in. The mixer is making a clicking sound when turned on.
What part needs to be replaced? Can I do it myself?
your problem is either you have a worn out planet hub there should be sort of a key , otherwise worst of all you have a broken lower part gearbox that is the crown gear in which the gear messes is sheared far lack of grease
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix blenders/mixers.