Garage Door Repair Glossary

This concise West Hollywood–specific glossary decodes the 12 most common garage-door repair terms you’ll hear from our white-glove craftsmen. Knowing these terms helps you spot issues early, ask the right questions, and protect your home’s safety and curb appeal in our unique micro-climate.

Whether you live near the Sunset Strip or up in the hills, understanding garage-door parts keeps your daily commute smooth and your property secure. Felix Morgan Garage Door’s Repairs LLC specializes in meticulous, clean, and fully guaranteed work across West Hollywood and neighboring areas like Beverly Hills and Culver City. If you’re unsure what’s making noise or why your door won’t close, our expert team is ready to help. See all services or request a free estimate.

Torsion spring

A tightly wound metal coil mounted above the garage door that counterbalances the door’s weight, allowing it to open and close smoothly. Unlike extension springs, torsion springs unwind rather than stretch, providing more controlled force and lasting up to 10,000 cycles. In West Hollywood’s warm climate, these springs can weaken faster from heat expansion, so annual inspection by a licensed technician is critical to prevent sudden snaps that can damage property or injure residents. See our full list of services.

Extension spring

A long, coiled spring that stretches along the horizontal tracks on either side of the garage door, pulling the door upward when it opens. These springs are under high tension and can snap if overloaded or corroded—especially concerning in coastal-adjacent areas like West Hollywood where salt air accelerates rust. Regular lubrication and tension checks every 6–12 months help prevent costly failures and ensure safe operation.

Track

The metal rails—usually two vertical and one horizontal—that guide the garage door as it moves. Tracks must stay perfectly aligned; even a slight bend can cause the door to bind, make noise, or derail. In older West Hollywood homes with original tracks, wear and corrosion are common. Our technicians use precision laser alignment to restore smooth, quiet operation and extend the life of your system.

Roller

Small wheels attached to the sides of the garage door that roll inside the tracks, supporting the door’s weight and enabling smooth movement. Nylon rollers are quieter and more durable than steel, ideal for West Hollywood’s noise-sensitive neighborhoods. Worn or cracked rollers cause jarring vibrations and can jump the track—especially during Santa Ana winds—so replacing them during a spring service is a smart preventative step.

Opener

The motorized unit mounted on the ceiling that automates your garage door’s opening and closing. Modern openers use DC power for quiet operation and smart-home integration. In West Hollywood, where many homes have ADUs or guest suites, a reliable opener with battery backup ensures access during power outages. We install and service brands like LiftMaster and Chamberlain with industry-leading warranties.

Photo-eye sensor

A pair of infrared beams mounted near the bottom of the garage door frame that detect obstructions in the door’s path. If the beam is broken while closing, the door reverses immediately—preventing accidents. In West Hollywood, where pets and children are common, these sensors are a critical safety feature. We calibrate and test them during every service to ensure they meet current UL safety standards.

Limit switch

An internal switch inside the garage door opener that tells the motor when to stop opening or closing the door. If misadjusted, the door may not fully close or could slam shut. In West Hollywood’s tight garages, precise limit settings prevent damage to vehicles and walls. Our technicians fine-tune these settings during installation and recalibrate them whenever we service your opener.

Weatherstripping

Flexible rubber or vinyl seals attached to the edges of the garage door to block drafts, dust, and moisture. High-quality weatherstripping with a high R-value (see below) is essential in West Hollywood’s micro-climate, where temperature swings and coastal humidity can cause energy loss and rust. We replace worn strips during tune-ups to improve insulation and reduce noise.

R-value (insulation)

A measure of how well garage door insulation resists heat flow. Higher R-values (typically 6–18) mean better temperature control inside your garage. In West Hollywood, where garages often double as workshops or guest rooms, insulated doors with R-12 or higher keep spaces cooler in summer and warmer in winter, cutting HVAC costs and protecting stored items from heat damage.

Cable drum

A grooved wheel at the end of the torsion spring shaft that winds and unwinds the lift cables as the door moves. If the cables fray or the drum cracks, the door can become unbalanced and dangerous. In West Hollywood’s older homes, original drums may be worn or mismatched. We replace them with heavy-duty steel drums during spring replacements to ensure safe, long-lasting operation.

Bottom seal

A thick, flexible seal attached to the bottom edge of the garage door that blocks water, pests, and debris from entering. Over time, UV exposure and wear degrade the seal, especially in West Hollywood’s sunny climate. A cracked or flattened bottom seal lets in dust and critters—we replace it during routine maintenance to protect your garage’s interior and stored belongings.

Travel module

The electronic brain inside modern garage door openers that controls speed, force, and safety features. It communicates with sensors, remotes, and smart-home systems. In West Hollywood’s tech-forward homes, a malfunctioning travel module can cause erratic behavior or failure to respond. We diagnose and replace faulty modules to restore reliable, silent operation.

Trolley

The sliding mechanism that connects the garage door opener to the door itself, pulling it along the tracks. A worn or misaligned trolley causes jerky movement or failure to open. In West Hollywood’s compact garages, proper trolley adjustment ensures smooth, quiet operation without damaging adjacent walls or vehicles. We inspect and realign it during every opener service.

Manual release

A red-pull cord or lever inside the garage that disengages the opener, allowing you to open or close the door by hand in case of power loss or opener failure. In West Hollywood, where power outages during fire season are common, this feature is a lifesaver. We test and lubricate the manual release during every service to ensure it works instantly when needed.

Frequently Asked Questions