Install the stiffening strut on top of the top section of steel doors with the section lying flat. Then install the opener bracket that replaces the center bracket between the top two sections. While you’re working on the sections, protect them from scratches by putting carpet scraps on top of your sawhorses. Now, slide the rollers into the roller brackets.
However, if you are confident that you don’t just need new batteries, make sure to call a professional. A service person with a lot of experience will be able to look at the problem and quickly diagnose the issue, saving you precious time. Again, while you may be able to save money in the short term by taking a day off and troubleshooting the problem yourself, the amount of energy and time lost as you search out the issue will quickly surpass the cost of a professional repair.
The tech that was scheduled to repair my broken torsion spring was professional and very detailed. He arrived 30 minutes early, was completely prepared to do all the work. He let us know every step before he took it and was upfront about the costs and ways to save money and remain safe. My garage door was fixed within 1 hour. I would highly recommend!