This video applies t.
Overhead door spring winding chart.
Your door will have either one or two torsion springs.
Each torsion spring consists of spring coils stationary cone and a winding cone fig.
On standard lift doors the formula is dh dc 1 or the door height in inches divided by the drum circumference in inches plus one.
After winding the spring you may need to add or subtract a quarter turn or more.
3 3 8 or 3 3 4 step 3.
Measure the overall length of the garage door spring unwound take all your measurements from the broken spring.
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Do not include the winding and stationary ends.
Determine the wire.
Install new or use this pair of left install new or use this pair of left and right wound torsion springs to replace broken sectional garage door torsion springs.
Both the winding and stationary cones are professionally installed for safe operation.
Measure the spring only from coil to coil.
The spring coils are color coded depending on the spring size and the winding cone is color coded separately either red or black.