If the chain on your garage door is rusty you need to apply lubricant into it to loosen the corrosion.
How to fix garage door chain.
Pull down the trolley cord to release the trolley from the chain arm and lower the door by hand.
A new front sprocket costs.
Step 2 turning off the power.
The reason the chain went off track was because the chain.
Around this sprocket as well as the gear and sprocket at the motor.
To do this put some lubricant on a piece of rag this use the rag to wipe the chain.
Another common cause for a loose chain could be the front sprocket breaking.
How to fix a garage door chain drive sprocket 1.
Once you are clear that the only problem is a slightly loose chain then you can begin fixing the problem.
Check the breaker controlling the door opener and.
Make basic checks first.
Move the ladder to the outer end of the chain arm near the garage door.
After close examination we found the chain was off track.
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.
Sprocket is at the end of the opener rail closest to the garage door opening.
If in doubt replace the chain completely.