Bruno S Medfield , MA February 07, 2020 Appliance: Bosch Wall Oven HBL5351UC/03 Bosch Wall Oven Hbl5351uc/03: Noisy cooling fan unit overheating.. How to replace Evaporator Fan Motor (With Fan Blade), 1 Unit. Replaced cooling fan 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours