Try to lower the door.
Garage door shake go going down.
Clutter or obstructions that block the sensor are the first problems to look for if your door won t close or in extreme cases open at all.
In a typical situation the motor for your garage door opener should stop running once the door has closed.
Over time the springs of the garage door can get worn out or break.
It goes partway down reverses direction and goes back up again.
If you find that it keeps running this can present a problem in your system.
There are two types of pulleys.
There are two types of pulleys used in garage door systems.
For most doors a complete rotation of the screw allows the door to advance 2 inches.
As a result they are unable to balance out the weight of the door as it opens and closes.
Press fit pulleys and cast iron pulleys.
Press fit pulleys are the most used type of pulley system.
If your garage door hits it bounces up and starts to open again your garage door is working well.
Depending on the brand.
If this is the case with your garage door ensure that you get the springs replaced.
This is almost always the result of a dirty or obstructed safety feature.
As a result the door may fall too fast as it closes.
Repairing garage door springs.
First check the sensor lights.
Simply lay a 2 by 4 on the ground and let the garage door come down on top of it.
Lastly you ll want to perform a safety test.
Turn the down adjustment one full turn counterclockwise.
However if your garage door doesn t bounce back up then you know you have a problem.
You push the button to close the garage door.