Barry B Oceanside , NY April 24, 2017 Appliance: KitchenAid 30" Built-In Electric Thermal Convection-Upper KEBC207KBL02 Kitchenaid Oven Kebc207kbl02: Fan motors was screeching when oven was turned on. How to replace Cooling Blower Kit. Turned off power to the oven. Remobed the trim and unscrewed 4 screws holdin the ovens to the wall. Removed the upper and lower doors from the oven. Placed a folding chair on each side ofnthe oven. This was about the right height to support my stove. Then with the assistance of my friend we slidnrhe stove out of the wall onto the open folding chairs. We removed the top cover and back cover exposing the upper and lower fan. We then unscrewed the fans and removed the power clips. A pair of pliers or an offset screwed driver was needed.for.the lower fan. installation was just tje reverse. Before placing the obens back in the wall, power wad temporarily restored to test the installation and operation. Aftet a successful test power was turned off. The oven was slid back into the wall. Screws were replaced. The trim and the doors were then replaced. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes