How To Tighten The Chain On A Garage Door Opener

This motor is attached to a bracket on the.

How to tighten the chain on a garage door opener.

Chain adjusts by shortening the chain itself. The trolley is responsible for pushing or pulling the opener arm along the chain so as to open and close the garage door. Because chains are lubricated with grease you can expect to get a little dirty while putting the chain back on your opener. There are only a few ways that the chain can be tightened.

Before you test the garage door make sure the chain is properly threaded through the mechanism sprockets. You can put the chain back on your automatic garage door opener using a simple adjustment mechanism. Both adjustment types should be done with the door closed and disconnected from the opener using the emergency release. Turn it counterclockwise holding the other nut in your hand to prevent it from turning.

Divide that measurement in half to find the center point on the rail. Use chalk and mark the center of the. Make sure you are away from the mechanism before you test it. Using your wrench you can start to loosen up the adjusting nut on the side of your carriage closest to the opener head.

The chain connects to a threaded anchor that you can move in and out to tighten or loosen the chain as needed. Then test the door to make certain that the door is opening and closing properly. Noticing that your garage door chain is sagging is a relatively easy task and is also one of the most common reasons why doors malfunction. Measure the length of the garage door opener rails from the garage door to the motor.

Then use the wrench to tighten this second nut clockwise until the chain is tighter but not so taut that it is completely inflexible. Most garage door openers use an efficient electric motor attached to the ceiling of your garage. Even if a chain is sagging a mere half inch below the rail it could cause problems to the drive sprocket because of banging into the garage door rail.