How To Fix A Garage Door Opener Chain

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    How To Fix A Garage Door Opener Chain

    A broken or loose garage door chain is a common problem for most garage car owners.

    This slack chain develops over time when your automatic door motor deteriorates.

    If this happens to your garage door opener, you should fix the chain by tightening it.

    However, fixing this by yourself is not recommended.

    Fixing or repairing a door opener chain is risky, and you might end up having a severe injury.

    It’s better to leave it to the expert to avoid accidents.

    On the other hand, if you think that you have the skills to finish this project.

    This article will give you ideas on how to fix a garage door opener chain.

    Still, if you changed your mind and want to rely on an expert, Garage Door Repair Pros Ottawa will help you fix the door opener chain.

    We have a team of professional garage technicians that has the skills and knowledge to finish the job correctly.

    We offer many garage door services, such as installation and repair for both residential and commercial properties.

    Don’t waste another minute and call us now!

    Fastening Your Door Opener Chain

    Fastening your automatic door chain is not hard if you locate the correct nut.

    This nut is attached to a bolt where the carriage or trolley is connected to the rail.

    The trolley’s job is to push or pull the door opener arm together with the chain.

    As a result, it can lock or unlock the garage door.

    Also, there is a piece of rope dangling from it, which re-engages or disengages the opener.

    Below will be the step-by-step process for this project.

    Unplug The Power Supply And Detach The Opener

    Before starting any projects like this, be sure to establish a protective measure.

    The first thing you need to do is to ensure that your garage is not open.

    Next, unplug the power supply to make sure that you don’t get electrocuted.

    If you don’t know where to disconnect, remember that opener outlets are in the ceiling.

    It’s dangerous when you’re working, and then suddenly your garage door starts opening.

    Also, you’ll use a step ladder while attempting to mend with the trolley.

    So, unplugging the power supply is essential.

    Next, separate the automatic door from the opener.

    After separating the garage door, drag down the manual release rope, then pull it back toward the opener.

    Find The Adjustment Bolt

    If you’re looking for the trolley assembly, it should have a bolt on the side.

    It’s a fastener that’s about six inches long where the nuts are attached.

    This adjustment lock nut and the locking nut are detached from each other by a separator.

    Threading the adjustment nut will increase the door chain’s tension.

    Secure The Adjustment Nut And Untighten The Locking Nut

    Get a half-inch wrench and begin loosening the locking nut moderately.

    Next, fasten the adjustment lock to increase the tension of the door opener chain.

    After adjusting the tension of your chain, you should also tighten the locking nut.

    Restore The Power And Re-attach The Opener

    Connect your opener and then re-engage it by dragging the manual release rope towards the opener.

    However, after re-attaching the opener, you might see that the opener chain will start to bend.

    Bending is normal, especially when the garage door is open because the chain will regain its tension.

    Observe Your Garage Door

    Open and close your automatic door repeatedly to ensure that the problem is solved.

    In case the opener chain is still overlapping against the rail, tighten the screw a bit more.


    A broken garage door opener chain is troublesome and expensive.

    So, the best thing to do is call a professional garage door technician to repair your chain and avoid accidents.

    Assuming you managed to fix your door opener chain, it should last for more than a year to properly work.

    However, if the chain is still slacking, it signifies that you need to replace either your chain or opener.

    Luckily, we are here to help.

    Garage Door Repair Pros Ottawa will help you right away.

    If you live in Ottawa, we offer garage door service for both commercial and residential establishments.

    Simply remember our name and call us now!

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