In order to fix this you ll want to make small changes to the close limit setting until the door opener knows to stop once the door has reached the floor.
Fix my garage door lock.
Locate the square hole on the inside of each door track.
Close your garage door and remove your existing garage door lock.
Locate where the ends of the locking bars.
Use the chisel to remove the door stop.
If your garage door is closing fully and then reversing to open again then it may be due to a problem with the close limit switch.
How to replace a lock on a garage door step 1.
Remove the pin that secures the inside lock handle to the lock shaft in the center of the door panel.
Replacing the lock or handle on a garage door can be accomplished with the appropriate tools.
Close the garage door and secure the door down with a pair of vice grips.
Depending on the model you have you may need to pry it out with a crowbar and hammer or remove it with a drill.
Place the vice grips on the door track.
Pull the inside.
Pry up on it until it comes loose and remove it.
Replace a garage door lock or handle with help from a garage do.
How to fix a garage door that won t lock step 1.
Step 3 install replacement install the new lock according to the manufacturer s instructions.
In most cases a homeowner can fix an overhead garage door lock catch in a relatively short time using everyday hand tools 1 close the garage door.
Close the garage door and attempt to lock the door from the inside.
If it won t lock open the door.
Tap the end of a chisel under the door stop on the striker side of the jamb.
The hole will be around the height of the second door.
Working inside the garage clear away all items.