After close examination we found the chain was off track.
How to fix garage door chain.
If your chain is badly corroded you may need to remove the chain from the carriage assembly and soak it in lubricant for a few hours.
Another common cause for a loose chain could be the front sprocket breaking.
If in doubt replace the chain completely.
Step 2 turning off the power.
Garage door didn t open in the morning.
Once you are clear that the only problem is a slightly loose chain then you can begin fixing the problem.
Make sure that the garage door is closed and that you have another way of getting out of the garage.
If the chain on your garage door is rusty you need to apply lubricant into it to loosen the corrosion.
Sprocket is at the end of the opener rail closest to the garage door opening.
To do this put some lubricant on a piece of rag this use the rag to wipe the chain.
Make basic checks first.
Check the breaker controlling the door opener and.
How to fix a garage door chain drive sprocket 1.
Around this sprocket as well as the gear and sprocket at the motor.
Ensure that the unit is plugged in the door isn t locked and if you are using a remote that the remote has batteries.
The reason the chain went off track was because the chain.
Pull down the trolley cord to release the trolley from the chain arm and lower the door by hand.