Unplug the garage door opener.
How to replace belt on craftsman garage door opener.
Install the new belt.
315 series 139 53939d is a residential garage door opener.
Use a step ladder to access the garage door opener s power cord and motor unit.
This was a craftsman model 139 53976srt.
I have a 1 2 hp craftsman garage door opener that is about 20 years old.
Https amzn to 2uwvnkj i m working on a chain drive opener.
I have checked that there is power to the opener and that is not the problem however if i tap the underside of the opener motor with a stick the unit lights up and the.
Take the garage door opener down.
The model is powered by a 1 2 hp motor.
Recently the wall switch that powers opening and closing is not lit and will not activate the opener.
As soon as you understand the problem you will be able to decide whether you can make craftsman garage door repair by yourself.
Craftsman 315 series 139 53939d garage door opener troubleshooting.
The garage door opener uses a belt drive to move.
Reinstall the garage door opener.
The garage door opener belt is an important part of the workings inside the opener when the belt is not working correctly the door will slip fail to open or come crashing down.
This is a video on how to change the gear sprockets in a craftsman garage door opener.