Damage on the tracks will often be in form of bends or crimps.
Garage door opener shakes when closing.
This issue tends to be worse when the door has been closed for a while.
In a worn pulley system the cables often get caught and cause the door to jerk or shake as it closes.
There are two types of pulleys.
Press fit pulleys and cast iron pulleys.
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.
When the door is opening or closing it runs on a set of tracks which keep the door in place.
Cast iron pulleys are the less popular pulley type that consist of one solid cast iron piece.
A garage door opener that is shaking really hard when opening or closing is the warning sign of a bigger problem.
They should be inspected to ensure that they are aligned correctly on the wall.
The first thing you should do is close the garage door and inspect the spring s.
Products used in this.
If your press fit pulley system has surrendered you may be able to see frayed cables or a separated press fit casing.
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.