In a typical situation the motor for your garage door opener should stop running once the door has closed.
Garage door shake go going down.
Turn the down adjustment one full turn counterclockwise.
If your garage door hits it bounces up and starts to open again your garage door is working well.
This is almost always the result of a dirty or obstructed safety feature.
You push the button to close the garage door.
Simply lay a 2 by 4 on the ground and let the garage door come down on top of it.
If you find that it keeps running this can present a problem in your system.
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.
As a result the door may fall too fast as it closes.
There are two types of pulleys.
Press fit pulleys and cast iron pulleys.
Over time the springs of the garage door can get worn out or break.
However if your garage door doesn t bounce back up then you know you have a problem.
There are two types of pulleys used in garage door systems.
Your garage door s pulley system is responsible for ensuring that the door moves smoothly up and down on its tracks so strange behavior like shaking as the door descends warrants further investigation of the pulleys.
Repairing garage door springs.
Continue to turn the down.
For most doors a complete rotation of the screw allows the door to advance 2 inches.
First check the sensor lights.
Depending on the brand.
Press fit pulleys are the most used type of pulley system.
Try to lower the door.
If your garage door shakes when opening or closing or sounds like it is going to fall off the track the problem is most often the pulleys.
As a result they are unable to balance out the weight of the door as it opens and closes.