How to Fix a Garage Door Opener Chain

How to Fix a Garage Door Opener Chain

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Homeowners want an ideal home.

They want their homes to be not only secure but also convenient and comfortable.

Both are accomplished by garage doors.

If well managed, it can add value to a house and even make daily life easier.

However, it is also capable of acting in other ways.

If garage doors are taken for granted, they can make it more difficult to work correctly.

Garage doors need a high-quality opener to function safely and efficiently because they serve such an essential role.

Significance of garage door openers


Can a garage door work properly but creates a sound that may be heard while relaxing or sleeping? No.

A garage door that works appropriately won’t generate any sound.

It is likely for a garage door to be silent.

The best garage door opener can significantly ease the noise it makes during service, enabling anyone to rest.


Garage doors are enormously heavy.

Thus, it entails a lot of energy to function.

When opening or closing a garage door, the opener locates anything in the door’s path if it has to stop to avoid hitting an obstacle.

If a garage door opener is not working accurately, the security features aren’t as well.

With that, the value of a properly functioning opener cannot be overstated.

Easy Access

Isn’t it true that the real reason people opt for an automatic garage door opener is to make things easier?

The garage is where we keep our cars and equipment, and the overhead access must function properly so that users can come and go as they want.

Ordinary tasks will take a long time if the opener is malfunctioning.

Invariably, a good opener will help dodge the irritation of breakdowns.

We are proud to sell the best garage door openers at Docdoor.

Simply contact us for a quote.

Garage Door Opener Chain Most Common Problem

The most common problem is a loose chain on a garage door opener that knocks against rails.

This is caused by the everyday usage of garage doors.

How is that becoming a problem? It is not only noisy.

It makes the garage door opener exert more effort when opening or closing the door.

Eventually, it will make the whole garage door system less able and jump off the door track later.

That is a bigger problem.

Steps to Fix a Garage Door Opener Chain

Given that importance, a garage door opener must be well taken care of, even its other parts that make it work.

It includes a loose chain.

Thus, garage door doctors from Docdoor made this how to fix a garage door opener chain to give everyone an idea.

Step 1: Do some safety precautions.

Below are some.

Close the garage door.

Turn off the door power supply and disengage the door opener.

Use protection gears.

Prepare tools necessary.

Step 2: Locate, loosen, then tighten the adjustment nut or bolt.

On one side of the trolley assembly, there is a threaded fastener screw.

It’s about five to seven inches long and has two nuts on it: a locking nut that’s closer to the opener and an adjustment nut that’s further away.

They’re divided by a divider, though.

Loosen the locking nut slightly with an adjustable or half-inch wrench.

Then tighten the adjustment nut to tighten the chain tension.

Tighten the chain until it lies a quarter-inch above the square rail and a half-inch above the T-rail at the midpoint.

Don’t over tighten it, as this would unnecessarily wear out the chain rollers.

Expert reminder: In general, it’s preferable to have a slightly loose chain instead of a rigid one.

Tighten the locking nut until the chain has been balanced to the correct strength.

For this, you’ll need two wrenches: one to keep the adjustment nut in place and one to turn the locking nut.

Step 3: Reconnect the power and re-engage the opener.

Re-attach the opener in two ways.

One is pushing the manual release rope back toward the opener before the trolley snaps back into position.

Two is merely by opening the garage door with the wall button, which will immediately snap the trolley back into place.

The chain droops a little when re-engaging the opener.

This is common: once the door is closed, the chain can recover its tension.

Step 4: Test.

To ensure the problem is fixed, open and shut the garage door a few times.

Stiffen the adjustment bolt some more if the chain is still banging against the rail.

Bottom Line

That’s all for “How to Fix a Garage Door Opener Chain”.

If, on the other hand, the chain or the opener often goes lax, we recommend replacing either or both.

That is because chains and openers are susceptible to wear and tear over time.

If unsure, let the Docdoor garage door doctors help you.

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Peter MacDonald

Peter MacDonald

I have been servicing garage doors since I can remember. Over the years I noticed I can help my clients better if they get detailed answers to their questions beforehand. In this blog I share my tips and thoughts so you can better understand the issue you might be facing and my companies approach to fix it.

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