Projects

Maintaining Garage Door Openers

Project Overview

Garage door openers are rugged devices that are expected to do many years of hard labour. An opener has both mechanical and electrical parts that could use a little maintenance and care. Always be sure the power is off before making any adjustments. Speaking of electricity, the first thing to check if an opener doesn't work is the power supply. Is it plugged in? Are electrical wires loose or disconnected? Lots of household fix-its are just that easy.

Step 1

Adjust Chain Tension

Eliminate a sagging chain by adjusting the chain tension. If the chain sags more than 1/2 inch below the rail, it may bang against the rail and cause undue wear on the drive sprocket. Tighten the chain until it rests 1/2 inch above the base of the rail, but be careful not to overtighten.

Step 2

Adjust Limit Screws

A door that fails to open fully can be fixed by adjusting the limit screws. Unplug the opener and locate the up-limit adjustment screw on the power unit. Turn the screw clockwise. Plug in the opener, run it through a cycle, and see if you need to adjust it more.

Step 3

Align Sensors Correctly

Safety-reversing sensors are those two little light-beam devices near the bottom of the door. If something breaks the beam while the door is closing, the sensor reverses the door. Sometimes, the beams can get out of alignment. Make sure the sensors face each other across the garage door opening in order to function properly.

Step 4

Clean and Lubricate

Clean and lubricate the drive chain and track of the automatic-door opener once or twice a year. Use a light penetrating oil instead of grease to keep from collecting dirt and grit.

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Project Details

Skill Level: Beginner

Time: 1 hour

Before you start, read this »

Due to differing conditions, tools, and individual skills, The Home Depot® assumes no responsibility for any damages, injuries suffered, or losses incurred as a result of attempting to replicate any of the home improvement ideas portrayed in this website Before beginning any home improvement project, review it thoroughly to ensure you or your contractor can finish the project and if any doubts or questions remain, consult local experts or authorities. Because codes and regulations vary greatly, you always should check with authorities to ensure that your project complies with all applicable local codes and regulations. Always read and observe all of the safety precautions provided by any tool or equipment manufacturer, and follow all accepted safety procedures.

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