It is really important that you install all the parts in the gear kit and heavily coat the drive gear and worm gear with the grease supplied. The part number for the kit is 41A2817 and is available almost everywhere. Don't take any shortcuts.

Ordered the gear only from Amazon.com.Guess I need to order the lube.Everything else looks like new inside the case.Thanks!!!

If you order the kit which you should it comes with everything you need including the lube. Sorry I didn't mention that earlier.

I automatically felt it was greased and was waiting to hear the cause because I had not seen this happen. Knowing the need of the grease after replacing 2-3 gears over the years (on different Sears's openers) I periodically grease my units and add the date. I have not lost a 2nd one due to the lack of grease. I have always used wheel bearing grease vs knowing a specific to use. loger