You need proper tension on a garage door to operate the door by hand or with an automatic opener. If the tension is too loose, the springs that help lift the doorway are ineffective as well as the weight of the door causes this unsafe. Too much tension equates to a door that does not shut all the way or stay closed. If your garage door has torsion springs throughout the inside of the door opening, then you need a professional to adjust the tension. Sectional doors and hinged doors have been corrected with a basic procedure for each kind.
Extension Springs
Close the garage door. Position a stepladder in the locale of the automated opener. Unplug the power cord to the opener. Pull down on the emergency release cord to disconnect the door in the opener’s track.
Lift up the doorway halfway in the inside, using one of the cross members. If the door stays at the halfway position without assistance, the tension is correct. If it lowers by itself, the tension is too loose. It is too tight if it increases beyond halfway without assistance.
Open the door fully by hand. Cut a two-by-four brace that installs vertically in the outer border of the doorway, using a handsaw. Place the brace in place in the outer border of the doorway.
Move the stepladder to the area of an extension spring in the upper end of the doorway in the trail on a single side. Loosen the lock nut on the threaded adjuster stem in the outer end of the pulley and spring assembly with an open-end rhythm.
Tighten the adjuster three full turns clockwise to include tension in the event the door closed and did not stay open halfway. Loosen the adjuster three turns counterclockwise in the event the doorway raised without assistance. Repeat the exact same adjustment in the pulley and spring adjuster on the opposite path.
Hold the outer border of the door open with one hand and get rid of the two-by-four brace. Lower the door halfway and test the tension. Repeat these steps, as necessary, until the door stays open halfway.
Lower the door by hand. Pull the disconnect cord to re-engage the closer. Plug in the power cord to the automated opener.
Hinge Springs
Disconnect the doorway in the automated opener, using the disconnect cord. Go to the exterior of the garagedoor.
Raise the door with the handle on the exterior. If the door is difficult to increase, the tension at the hinge springs is too loose and the automatic closer must work too difficult to raise the doorway. If the door increases too fast, the tension is too tight and the automated opener must work too difficult to shut the door.
Open the door fully to relieve the tension on the hinge springs at each side of the doorway opening. Put in a vertical two-by-four brace in the outer border of the door to prevent the door from dropping closed when the springs have been adjusted.
Ask an assistant to help fix the tension on the springs.
Put on gloves. Begin at the hinge and spring at the same side of the doorway opening. Note the link in the anchor chain where the hook in the lower end of the spring is attached, such as the third or second link in the upper end of the string.
Grip the spring together with both hands and pull downward so your helper can disconnect the anchor chain from the hook in the lower end of the spring.
Pull downward on the spring and reattach the hook in the lower end of the spring at the following link down the string to increase the spring tension. Reattach the hook at the following join to loosen the tension. Repeat the identical procedure at the hinge and spring in the opposite side of the doorway.
Hold the door open and remove the brace. Reattach the doorway in the opener track utilizing the disconnect cord.