When the door is opening or closing it runs on a set of tracks which keep the door in place.
Garage door opener shakes when closing.
This issue tends to be worse when the door has been closed for a while.
What should you do if there is damage to the garage door.
In a worn pulley system the cables often get caught and cause the door to jerk or shake as it closes.
Products used in this.
Cast iron pulleys are the less popular pulley type that consist of one solid cast iron piece.
They should be inspected to ensure that they are aligned correctly on the wall.
Press fit pulleys and cast iron pulleys.
If your garage overhead is getting jammed or shaking and jerking as it closes the tracks should be checked.
There are two types of pulleys.
Damage on the tracks will often be in form of bends or crimps.
In a torsion spring system the spring will be mounted on a spring bar torsion tube that is mounted to the header above the garage door opening.
The first thing you should do is close the garage door and inspect the spring s.
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.