I think I have a bad timer and it is part number ap3037275, the timer itself has a part number of m460-g on it. I have found many of these much cheaper than mine but I dont know if they are all the same or if there are many different variations to this one unit. Also, should I replace the whole timer assambly or just the motor and gear unit on the back. Can I check the small motor with an ohm meter? sorry for the long post and thanks for the help.