It is white nylon and may be stripped.
Garage door stuck on stop bolt.
I decided to unbolt the chain from the trolley to allow the opener to move again.
When i disconnected the door it seemed to open and close by hand smoothly.
When i pushed the button the door began to open but it didn t stop and hit the stop bolt causing a lot of stress on the chain.
The garage door opener motor will hum when attempting to open or close the door but is unable to travel due to being lodged against the bolt tab.
I have compared with the other garage door opener i have and it stops on the way up 1 2 inch before the trolley hits the safety screw bolt.
My 10yr old house has a sectional aluminum door and a 1 2hp craftsman garage door opener.
Use these troubleshooting steps if the trolley is stuck on the stop bolt or stop tab.
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A broken spring typically will make the door very hard to lift rather than causing the door to stick.
The trolley can become lodged against the stop bolt tab because the door has either opened or closed too far.
Remove the cover from the motor unit and you will find the gear just in front of the motor.
When my craftsman garage door opens up it goes all the way up until the trolley hit the safety pin.
It is a craftsman 3 4hp model 139 53918d.
Do you know what i need to do to limit the movement of the door model 139 53650srt craftsman.
The stop bolt is just in front of the motor unit.
It sounds like you may have a bad drive gear.
Recently it opened all the way until the trolley hit the bolt that stops it from going any further.
Tried to reset opening travel distance but it keeps traveling to the stop bolt and clicking.
Once it topped out the opener stuck there.
Garage door springs support most of the weight of the door when it s opening and closing.
The trolly was parked where the door would normally remain closed.
A problem came along after the assembly was complete and i tested the garage door opener.
If you find that it keeps running this can present a problem in your system.
In a typical situation the motor for your garage door opener should stop running once the door has closed.