my Whirlpool ice maker is making clicking sound lately. I pull out the front cover and notice the white plastic gear in the middle is making the sound. It appears that it is trying to rotate but NOT able to and got stuck in the same position. I think there is a part# 628358 imprinted on the gear. Need help to determine whether that is the problem, if so, how do I go about to fix it? Thank you for any help/suggestions.

Thank you greatly for your quick reply to my Ice Maker possible problem. I'll go ahead and order the part as mentioned. Any specific instructions on removal of old part and installation of the new part? Are there any adjustments needed after the installation of the part? Thank you again...