Garage door opener is very strong and seldom does the chain actually break.
How to fix a garage door opener chain.
Chain drive garage door openers have a sprocket that is attached at the top of the motor.
The main drive gear is the plastic gear that comes in direct contact with the worm drive gear on the motor.
Replace the main gear drive if the garage door opener makes a grinding noise but the door doesn t move your main drive gear is probably toast.
Garage door opener won t open all the way fix.
Chain driven garage door openers should have some slack in the chain for optimal performance.
Over time the sprocket s teeth can wear and the chain may jump or skip when the opener raises the door.
If your garage door is closing fully and then reversing to open again then it may be due to a problem with the close limit switch.
Having an automatic door opener in your garage is a great convenience but you have to give the opener and all its parts regular.
In order to fix this you ll want to make small changes to the close limit setting until the door opener knows to stop once the door has reached the floor.
In this case the cable can be replaced fixing the problem.
How to fix a chain drive garage door when it won t open.
Sometimes the cable will break if it is a combination chain and cable drive system.
You can put the chain back on your automatic garage door opener using a simple adjustment mechanism.