craftsman garage door opener

tasklineDecember 7, 2006

I have just changed the gear on my opener and now it will go up only 2 feet and then it goes back down. what have I done wrong and how do I fix it? thanks for any help

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Make sure you put the black cup ( black circle ) back on the shaft and have it pushed all the way on. Also make sure the small circuit board just to the left of that cup is plugged in.

    Bookmark   December 7, 2006 at 9:06PM
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I only replaced the drive gear, nothing else. it only will move 2 feet then reverses.

    Bookmark   December 8, 2006 at 6:20PM
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You say you only changed the drive gear. Did you have the chain off the sprocket? Is the door going up two feet and reversing or going down two feet and reversing? Did you get a set of instructions with the new gear? The answers will help.

    Bookmark   December 8, 2006 at 7:41PM
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I have taken the opener down and removed the gear to see if that is the problem. the motor goes about 1 second then reverses in other direction. it seems like there is a limit switch issue but, all the connections are in tact. any thoughts?

    Bookmark   December 8, 2006 at 8:49PM
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On the front of the motor shaft (door side) there should be a black plastic cup. Make sure it is pressed all the way onto the shaft and that the quick disconnect with 4 wires is firmly pressed onto the small circuit board in the same area. This will cause the problem you are experiencing.

    Bookmark   December 9, 2006 at 12:32PM
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Don, your a hero!!! Now I have to take back the new opener I just purchased this morning from Sears. thanks for the help,


    Bookmark   December 9, 2006 at 5:40PM
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after a long time without use the door closed but now does not respond to any command. it is a model 139.xxxxxSRT and i disconnected teh single button wall mount and the only response is teh green light on the back flashing 5 times. any ideas?

    Bookmark   December 22, 2006 at 5:46PM
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