How To Replace Garage Door Torsion Springs: A Step-by-Step Guide
Replacing garage door torsion springs is one of the most dangerous and technical garage door repairs a homeowner can attempt. These springs are under immense tension and, if handled improperly, can cause serious injury. If you’re not experienced with garage door systems, it’s strongly recommended to leave this task to a professional. However, for educational purposes, here is an in-depth overview of how torsion spring replacement is typically done.
What Are Torsion Springs?
Torsion springs are mounted horizontally above your garage door. When the door is closed, the springs are under tension. As the door opens, the tension is released, which helps lift the heavy door with ease. Over time, these springs wear out due to repeated stress and need to be replaced.
Signs Your Torsion Springs Need Replacing
- The door won’t open more than a few inches
- You hear a loud bang from the garage (spring breakage sound)
- The door feels extremely heavy when trying to lift manually
- The door opens unevenly or looks crooked
- You see a visible gap in the spring coil
Tools and Materials You’ll Need
- Two winding bars (NOT screwdrivers)
- Socket wrench or drill
- Locking pliers or vice grips
- Ladder
- Safety glasses and gloves
- Replacement torsion springs (ensure correct size and type)
Step-by-Step Torsion Spring Replacement
Step 1: Disconnect the Power and Secure the Door
Unplug the garage door opener and secure the door in the down position using locking pliers or vice grips on the tracks. This ensures the door won’t move unexpectedly.
Step 2: Identify the Spring Setup
Most garage doors have one or two torsion springs located above the door. Note the position and winding direction (left-wound or right-wound).
Step 3: Loosen the Unbroken Spring’s Tension
Insert one winding bar into the winding cone and hold it firmly. Loosen the set screws on the cone with a socket wrench. Carefully unwind the spring by alternating winding bars, turning one-quarter turn at a time. Repeat until all tension is released.
Step 4: Remove the Broken Spring
Use your socket wrench to remove the bolts that secure the spring and cable drums. Slide the broken spring off the torsion bar. If you’re replacing both springs, repeat the same steps for the second one.
Step 5: Install the New Spring
Slide the new torsion spring onto the torsion bar, ensuring it’s wound correctly (left or right). Reattach the center bearing plate and cable drums. Tighten all hardware.
Step 6: Wind the New Spring
Use winding bars to tighten the new spring—typically 30–36 quarter turns depending on the spring and door size. After winding, tighten the set screws firmly to hold the tension in place.
Step 7: Remove Tools and Test the Door
Remove the vice grips or locking pliers. Carefully lift the garage door manually to ensure it moves smoothly and stays up on its own at mid-level. If not, adjustments may be needed.
Step 8: Reconnect the Opener
Once the door is operating properly, plug the opener back in and test it with the remote.
Safety Tips When Replacing Torsion Springs
- Never use screwdrivers as winding bars—only use bars designed for this purpose.
- Always stand to the side of the winding cone, not directly in front of it.
- Wear gloves and safety glasses at all times.
- If unsure about sizing or installation, consult a professional.
Final Thoughts
Garage door torsion spring replacement is not a beginner DIY project—it involves powerful mechanical components that can be hazardous without proper knowledge and tools. If you have any doubts, contact a professional garage door technician. A trained expert can safely replace torsion springs, ensuring your door operates properly and you stay out of harm’s way.
If you’re in North Carolina and need reliable spring replacement, reach out to OnTrac Garage Doors. Our expert team provides fast, safe, and affordable garage door repairs to keep your home secure and your garage running smoothly.
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