Garage Door Arm Adjustment

Place a stepladder beneath the box portion of the garage door opener.

Garage door arm adjustment.

Once your garage door is secured remove the spring hook from the track hanger which will allow you to move the hook and adjust the spring s tension. If you have a wooden garage door then you can trim the door down to make it fit properly. Have a helper steady the ladder. Retest the door.

Once the spring is free of tension remove from its track hanger. These may be on the side of the box but are usually at. Adjusting the height of the header bracket illustrated in the second image will help keep the curved door arm from extending below the lowest point of the door or the lowest point of the header wall. Access door gap between floor and bottom of door safety must not exceed 14 reversing sensor.

You must attach the bracket that connects the arm to the door before you can attach the arm itself. Look for two limit adjustment screws. You can do this with a jigsaw or a circular saw sanding off the bottom and replacing it in the frame so it sits properly. To adjust your garage door s side mounted springs first open your door fully and secure it in place with a c clamp below the bottom roller.

I left the door in the lift bay alone and just offset the opener completely outboard of the upper rail on one side. Settling is a problem for garage doors as it changes the way the door sits in the frame. If the door was closing too quickly move the spring to the next higher hole on the bracket. Adjust the springs on both sides of the door the same way.

You may also have to adjust the position of the door bracket shown in the third image.