Using your wrench you can start to loosen up the adjusting nut on the side of your carriage closest to the opener head.
Tighten up garage door chain.
Climb up on a stepladder and take a look at the trolley assembly.
The reason the chain went off track was because the chain.
The trolley is a piece of metal that moves along the.
How to troubleshoot a loose chain on your garage door step one.
After close examination we found the chain was off track.
Measure the length of the garage door opener rails from the garage door to the motor.
Disconnect the power supply and disengage the opener.
Turn it counterclockwise holding the other nut in your hand to prevent it from turning.
Adjust it tight enough so that the center of the chain sags about 1 2 down from parallel with the track graphic below right.
Divide that measurement in half.
How to make a chain tighter on a garage door 1.
A sagging chain is a result of normal usage of the garage door opener.
Adjust the chain on a garage door opener with help from a garage door spec.
Then use the wrench to tighten this second nut clockwise until the chain is tighter but not so taut that it is completely inflexible.
Do not over tighten the chain.
Open the garage door and find the trolley on the opener rail.
Garage door didn t open in the morning.
This will cause premature wear on the chain rollers.
Locate the adjustment bolt.
The chain is a very important component that makes up a garage door opener system.