Loosen the outer nut (the nut closest to the garage door) until the chain droops below the base of the rail, then loosen the inner nut to allow room for the chain to be tightened. To add tension to the chain, tighten the outer nut. With every turn of the outer nut, the chain will rise slightly.

Should there be slack in garage door chain?

Typically you will want to tighten the chain just enough so that it is no longer hitting the garage door. If it still sags slightly, this is fine. A little sag is better than being too tight as you definitely don’t want to put the chain at risk of breaking.

How do you fix a sagging garage door chain?





How to Troubleshoot a Loose Chain on Your Garage Door

  1. Step one: disconnect the power supply and disengage the opener. …
  2. Step two: locate the adjustment bolt. …
  3. Step three: loosen the locking nut, then tighten the adjustment nut. …
  4. Step four: reconnect the power and then re-engage the opener. …
  5. Step five: perform a test.


What causes a garage door to walk to one side?

If you’re wondering why your garage door shifted to one side, the probable reason is you have a rusted or broken spring. This problem can happen due to misaligned rollers, heavy rain, and worn cables. When you realize that your garage door is shifted to one side or crooked, you should repair the door right away.

Do garage door opener chains stretch?

Chains do not stretch. Take a good look at the sprocket above the motor unit. It has a bronze bearing that wears and lets the shaft lean toward the door. This will cause the chain to sag and when it gets bad enough it will throw the chain off the sprocket.

Is my garage door chain too loose?





Keep your eye on the midpoint of the rail. When the chain is approximately 1/2″ (for T-Rail), or 1/4 ” (for Square Rail) above the base of the rail, at its midpoint, tighten the inner nut (the nut closest to the motor) to secure the adjustment. The chain is now properly adjusted.

How do I get my garage door chain back on track?

Quote from the video:
Quote from Youtube video: It is out of a pop out the gear. So the way to fix this is there is a tensioner right there that you can loosen up. And after you loosen it up you can slip the chain.

Why is my garage door chain not moving?

If the motor hums, but the chain doesn’t move, that indicates a problem with the motor. If the motor works but the chain doesn’t move, the chain sprocket may need servicing. If nothing happens at all, the safety sensors may be out of alignment.