Knob,control ,white 316223028

Hello Gary, Thank you for the question. The knob is actually PartSelect Number PS1148076. If it is just the knob that is damaged no other parts are needed. I do suggest checking to see if you still have the support under the knob, Part Number: PS3506395. We do not have a video or diagram showing how to remove the knob sorry, but you just pull the old one off the shaft and line the new knob up with the shaft and push it onto the shaft. Hope this helps, good luck with this repair!