This will cause premature wear on the chain rollers.
Garage door chain tight one side loose other chamberlain.
Step 2 turning off the power.
Do not over tighten the chain.
Adjust it tight enough so that the center of the chain sags about 1 2 down from parallel with the track graphic below right.
You loosen the locking inner nut and turn the outer nut clockwise to adjust the excess slack from the chain.
Tightening your garage door chain is a simple matter of turning the right nut.
The one you re looking for is attached to a bolt found at the spot where the trolley or carriage connects to the rail.
Garage door chain tight one side loose other posted on may 21 2020 by bandi ruma how to fix your garage door opener garage door chain loose okice co garage door opener repair and tighten and adjust garage door cables my garage door cables are loose.
If in doubt replace the chain completely.