How To Replace A Craftsman Garage Door Opener Gear

Lower the motor unit down.

How to replace a craftsman garage door opener gear. Unplug the garage door opener. Remove the outer nut and lock washer from the trolley threaded shaft and pull the threaded shaft out of the trolley. Select the parts section of your craftsman garage door opener that you want to view. With the gears back in place tighten the chain as directed in your owner s manual.

Key the model number into the search bar on the sears partsdirect webpage to view parts for your craftsman garage door opener. This is a video on how to change the gear sprockets in a craftsman garage door opener. Remove the gear and sprocket assembly. Lay the chain out on the garage floor while you complete the repair.

Clean the shaft with acetone or similar and the new one will go on pretty easy. Pull the chain off the motor unit sprocket and out of the chain spreader. Install the new gear and sprocket. Slide the outer trolley away from the inner trolley.

Replace the cover on the garage door opener plug it back in and start enjoying your now functioning garage door opener. Use a step ladder to access the garage door opener s power cord and motor unit. Careful prying with a screwdriver will ease it off. Remove the chain and cable 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. This was a craftsman model 139 53976srt.