Lay the chain out on the garage floor while you complete the repair.
How to replace a craftsman garage door opener gear.
Select the parts section of your craftsman garage door opener that you want to view.
Step by step garage door opener gear fix.
Key the model number into the search bar on the sears partsdirect webpage to view parts for your craftsman garage door opener.
This was a craftsman model 139 53976srt.
Clean the shaft with acetone or similar and the new one will go on pretty easy.
This is a video on how to change the gear sprockets in a craftsman garage door opener.
Replace the cover on the garage door opener plug it back in and start enjoying your now functioning garage door opener.
Careful prying with a screwdriver will ease it off.
Remove the gear and sprocket assembly.
Put a thin layer of the grease included in the kit on the gear.
Make sure everything is seated back in the original positions and the interrupter wheel is fully seated.
Now you need to install the new helical gear assembly.
Install the new gear and sprocket.
Slide the outer trolley away from the inner trolley.
Use a step ladder to access the garage door opener s power cord and motor unit.
Remove the outer nut and lock washer from the trolley threaded shaft and pull the threaded shaft out of the trolley.
Pull the chain off the motor unit sprocket and out of the chain spreader.
Select the craftsman garage door opener replacement parts you need using the key number on the parts diagram as a reference.
Lower the motor unit down.