Replacing garage door torsion springs can be hazardous if not done correctly. Here are some common mistakes DIYers make and tips on how to avoid them:
1. Using Incorrect Tools for the Set Screws
Using a box or socket wrench on set screws can lead to serious injury if the cone slips. Never use a screwdriver to wind or unwind torsion springs. Instead, use an open-end wrench or a small adjustable wrench.
2. Using the Wrong Winding Bars
Winding bars should be 18 inches long and fit securely in the winding cone holes. The bar edges should have sharp 90-degree cuts, not rounded edges. If the only available bars do not fit securely, it is best to hire a professional to avoid injury.
3. Failing to Insert the Winding Bars Fully
Always insert the winding bar ultimately into the winding cone until it "clicks" into place. Mark the bar with tape when it meets the cone to easily monitor its depth while winding or unwinding.
4. Touching the Set Screws Before Inserting a Winding Bar
Before loosening any set screws, ensure a properly fitting bar is inserted into the winding cone. This prevents the cone from spinning uncontrollably, which can cause serious injuries.
5. Installing Springs on the Wrong Sides
Ensure the spring wind direction is correct. The left side should have a right-wind spring, where the end of the wire points upward, and the cone is typically red. The right side should have a left-wind spring, where the end of the wire points downward, and the cone is usually black.
6. Not Stretching the Springs After Winding
After winding the torsion springs, it is important to stretch them slightly to compensate for the shaft's horizontal movement during operation. This ensures the door closes completely. To do this, mark the shaft 1/4 inch beyond the winding cone, lift the winding bar, and tap the top of the bar just under the winding cone to bind it to the shaft as you stretch it. Once the cone aligns with the mark, tighten the set screws.
7. Failing to Test the Door Balance
After winding the springs, always test the door balance. The garage door should stay closed when fully down, stay in position when halfway open, and remain open when fully raised. Adjust the spring tension as necessary by adding or removing quarter turns.
Safety Reminder
Replacing garage door torsion springs can be extremely dangerous. If you are unsure about any step or lack the proper tools, seek help from a qualified professional.