Make basic checks first.
Garage door chain keeps getting loose.
Safety sensors are the electronic eyes near the base of the door track on both sides.
Just make sure that the chain hangs around 1 2 below the top of the rail.
When the bolts and nuts become loose they can cause your garage door to make a vibrating or rattling noise when you open and close it.
Garage door opener systems may be chain driven belt driven or screw driven.
Tightening up the chain is therefore an important part of regular maintenance.
First you should check the safety sensors.
This work should be done by a qualified garage door contractor.
When your garage door opener chain becomes loose it creates a loud slapping sound and causes the rollers to smack against the track because of jerky door movements.
Disengage the door from the trolley by pulling the emergency cord if none of the basic checks reveals a simple.
Then look to see if the rollers are in working order.
These cables can become frayed and worm requiring replacement.
You may find that a loose garage door opener chain has less power to open and close your garage door or you may find that it is just hitting the door as it moves it and creating an annoying sound.
If you find that your garage door opener chain has become loose with time you may want to tighten it up in order to remove some of that slack.
A loose chain isn t just noisy it also forces your opener to do more work making the whole system less efficient.
You don t want it too tight or it has cause the sprocket bushing to wear out prematurely.
Verify if there isn t a block between them.
They need to have a clear line of sight between them in order for the door to work properly.
How to fix a chain drive garage door when it won t open 1.