If the gear becomes too worn it will no longer be able to move the chain.
Grinding noise chain not moving on garage door.
The door track rollers move each time you open or close the door leading to a lot of movement and causing wear.
Press the remote or the wall mounted start switch listen to the motor and watch the movement of the chain.
A constant grinding noise could be a sign that your garage door opener s chain or belt is either too loose or too tight either way it needs adjusting.
If you hear a garage door grinding noise it could be the rollers.
The main drive gear is the plastic gear that comes in direct contact with the worm drive gear on the motor.
This excess tension causes the gear that moves the chain to grind down.
If the chain was installed too tightly on the garage door opener it can make opening the door more difficult for the automatic opener.
This wear could damage the roller surface causing them not to roll correctly.
If the garage door opener makes a grinding noise but the door doesn t move your main drive gear is probably toast.