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