This part is found in the same location as the Terminal Block at the back of the Dryer. It acts as a safety device which prevents your appliance from overheating.
I first ordered the replacement knob. It had broken before and I had repaired using a steel washer and epoxy to support the cracked plastic. When the support system I installed broke, I suspected a deeper problem; increased resistance to knob rotation in the control system. I removed the front panel to get back at the switch area. I wanted to lubricate the whole control, but UT seemed to be well sealed. Finding a couple areas where the plastic came together, held by a permanent metal mount, I used a pressurized silicone lubricant and sprayed into the small spaces. That allowed for easier rotation of the control, hopefully giving a longer lifespan to the new knob. DO
