Garage Door Adjustments Don't Last

kookykittyJune 9, 2011

Hello, I'm hoping someone has an idea about what's wrong with our garage door opener. We have a Craftsman 1/2HP garage door opener (model 139.539...). About a month ago it started acting up - not opening all the way, opening and shutting on it's own, etc. I say "etc" because it's not behavior is not consistent. So we would fix it by tweaking the adjustments. But the problem is that the "fix" would only last about 2 days before it would start all over again. This last "fix" we zeroed out the force admustments because we had reached the max, then started over (the travel limit adjustments don't seem to have a max) That fix only lasted 2 days and now it's not working again.

Here's generally what it seems to be doing:

first try: opens up about 3 ft.

second try: closes all the way

third try: opens about 6 inches

fourth try: closes, then opens on it's own

fifth try: closes and may or may not stay closed.

Does anyone have any idea why our fixes will only last 2 days?



Thank you for reporting this comment. Undo

I think you need to remove the cover from the motor unit and check for a bad drive gear. It is white nylon and is just in front of the motor. It will be obvious if it is going bad. The part number is 41A2817 and it comes with instructions. It is available at Sears or any good door opener service company. Do not accept it if the instructions are not included.

    Bookmark   June 9, 2011 at 5:09PM
Sign Up to comment
More Discussions
Snowblower help
I have a M t d model 317e760f118 track driven snow...
Garage Door Torsion Spring
Have you noticed that local HomeDepot/Lowes do not...
Wayne Dalton i-Drive vs. Belt Drive vs. Screw Drive
Hello All, I am looking to install 2 new garage door...
Craftsman 3/4 HP Garage Door Opener w/Extension
I just installed a 9.18450 opener with a track extension...
Good material to patch potholes in old garage floor?
I have some pot holes in my 1963 garage floor. The...
Sponsored Products
Lana Chest
$2,799.00 | Horchow
18 Inch Larch Canapa Bathroom Vanity Set
Fairmont Maple Caramel Jute Glaze Stained Wood Shaker Kitchen Cabinet Sample
CliqStudios Cabinets
Travessa Bronze 16 1/2" High Outdoor Wall Light
Lamps Plus
Hilo Area Rug
Grandin Road
VerPan | Fun 1WA Wall Light
Levolor 2 1/2-inch Visions Faux Wood Blinds
Rustic Mint Tray
$25.99 | Dot & Bo
People viewed this after searching for:
© 2015 Houzz Inc. Houzz® The new way to design your home™