Clearly something is binding catching or blocking the door sections or roller wheels in the tracks.
Manual garage door won t stay closed.
If you re craftsman chamberlain etc garage door opener is closing and then opening up its likely a common problem related to the stop limit mechanism.
Start by rotating the down limit screw or knob one complete turn in the minus direction.
First check the sensor lights.
Continue adjusting until the door opens and closes satisfactorily.
This could cause unnecessary damage.
How to adjust manual garage doors to stay up step 1.
Your garage door may be binding i e not rolling smoothly along the garage door tracks.
Adjust in small increments a half turn or less.
Raise the garage door up to its fully open position.
The craftsman garage door opener shown here has two set screws that control door travel.
You should find two plastic screw heads or knobs on the.
Check the motor housing mounted to the ceiling of your garage.
It is also possible that the door is becoming wedged as it gets toward the lowest position.
Test after each adjustment.
It could be as simple as one of the track mounting bolts has come loose and is binding with the roller as it tries to go by.
Adjusting the limit travel setting the most common reason as to why a garage door won t stay closed is that the limit settings are off.
Locate the cable clip that is attached to an s hook toward the front of the horizontal track.
Test the garage door to see if it stays.
Secure the garage door in this position by clamping vice.
With this tool in hand follow these steps.
To test for this use the manual release handle rope hanging from garage door opener track to release the garage door from the opener.
Depending on the brand.
Replacement safety sensors http amzn to 2j1kp7q replacement ultra quiet rollers http amzn to 2j1kwjn it s a really easy fix and the things i show in.
There can be a few reasons as to why your garage door won t stay closed and by doing some snooping and checking a few parts of the garage door system you ll be able to see what s really going on.
Start by checking the rack and the rollers to see if something has become stuck.