Customer Questions and Answers for Defrost Timer Cam by Whirlpool

This defrost timer cam replaces the plastic cam on a mechanical defrost timer. It restores the timer's changeover between cooling and defrost, helping prevent frost buildup on the evaporator and temperature swings inside the refrigerator.

• Mounts on the timer shaft to actuate the internal switch between cooling and defrost
• Helps resolve issues like heavy frost on the evaporator, warm fresh food section, or a unit stuck in defrost/run
• Corrects timer advancement problems caused by a stripped, cracked, or missing cam
• Typically installed with the defrost timer in the control housing or rear service area

• Disconnect power before servicing
• Access the defrost timer and note the original cam's orientation for reference
• Remove any retainer, pull the old cam straight off, and press the new cam fully onto the shaft without forcing
• Reassemble, then manually advance the timer to confirm it switches modes before restoring power