Latest Author Articles from Jim Sorensonhttp://www.articleside.comen http://www.articleside.com/home-improvement-articles/garage-door-repair-loose-sagging-chain-on-opener.htm your automatic garage door is made up of several major working parts. there is the hinged door itself, the largest part. there is the spring, wire and pulley system, the mechanical pieces that make th... http://www.articleside.com/home-improvement-articles/garage-door-repair-loose-sagging-chain-on-opener.htm your automatic garage door is made up of several major working parts. there is the hinged door itself, the largest part. there is the spring, wire and pulley system, the mechanical pieces that make th... http://www.articleside.com/home-improvement-articles/how-to-unwind-a-garage-door-spring-dangerous.htm your garage door opens and closes with the use of a garage door torsion spring. if you look up near the tracks at the back of your garage door system, you will normally see one or two large, tightly c...