Saturday July 5, 2014
It is essential to use the appropriate measures to weigh garage doors in order to verify the dimensions of the torsion springs. The weight; track radius; height; and drums assist in determining the appropriate springs for proper balance of the garage door. It is important not to use a digital scale. A commercial scale that is designed to weigh packages should be used instead. An expert installation contractor should be contacted if individuals do not have prior experience installing and maintenance garage doors. It is a wise decision to consult a professional if persons are simply unsure of the required procedures and dangers.
Important Note: Performing any type of maintenance on a garage door is extremely dangerous. Ensure strict attention is paid to all safety tips and precautions.
Disconnect the arm of the opener. Simply disconnecting the trolley from the carriage is not sufficient. The outer carriage may become caught on the inner carriage and result in an incorrect reading. Failing to disengage the outer carriage may cause damage to both the opener and door. This neglect can also alter the reading of the weight.
Place a board on top of the analog scale and place the scale in the front of the middle of the door. In the case that one or both springs are broken, reinstallation of cables for cable drums should be performed at this time.
Pull the cone of the broken spring down using a winding bar. A hefty pipe wrench may also be used to pull down upon the shaft. This action should cause the door to lift. Scoot the analog scale under the garage door. Gently drop the door down to the scale and read it. In the case that both springs are broken, or that there is only one, shimmy the door to ensure it is free inside the tracks then read the weight. Heavier doors that are greater than 150 pounds and/or have one spring wound will require the use of two scales. Place them under the first line of hinges of each end of the door.
If one spring is currently wound, push the pipe wrench or winding bar up ¼ turn. This action should loosen the cables a little and position the complete weight of the garage door upon the scale. Gently shimmy the door while pushing the bar up to ensure that it is free inside the tracks. Also ensure that the cables stay loose as this is being performed.
Read the scale and continue to push on the pipe wrench or winding bar. Both of the cables must be loose during the reading of the scale. It may be necessary to ask an assistant to view the weight reading, if the dial is exceptionally small. Once the weight reading has been completed, lower the pipe wrench or winding bar to enable the tension of the spring to shift to the cables and cable drums. Reverse the former steps in order to retrieve the scale from under the garage door.