The trolley is responsible for pushing or pulling the opener arm along the chain so as to open and close.
How to tighten the chain on a garage door.
Step 4 adjusting the chain.
This is where you will be working on in the next step.
Once you have access to the inner components of the garage door opener locate the master link the point where the chain forms a junction with the cable.
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.
There may be an adjustment linked to the chain or an adjustment to the length of the door opener track.
There are only a few ways that the chain can be tightened.
The chain on my garage door opener seems to be sagging and rubbing on the track.
Locate the lower cover of the garage door and use the screwdriver to open it.
The one you re looking for is attached to a bolt found at the spot where the trolley or carriage connects to the rail.
Tightening your garage door chain is a simple matter of turning the right nut.
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.
How to tighten your garage door chain.
The chain is a very important component that makes up a garage door opener system.