Pull the chain off the motor unit sprocket and out of the chain spreader.
How to replace drive gear on craftsman garage door opener.
Pull the drive gear off the drive shaft.
With the gears back in place tighten the chain as directed in your owner s manual.
Now you need to install the new helical gear assembly.
Insert the new roll pin through the gear and drive shaft.
Replace the cover on the garage door opener plug it back in and start enjoying your now functioning garage door opener.
This was a craftsman model 139 53976srt.
Step by step garage door opener gear fix.
Lay the chain on the garage floor while you complete the repair.
Replace the drive gear.
Put a thin layer of the grease included in the kit on the gear.
This is a video on how to change the gear sprockets in a craftsman garage door opener.
Nick sgaragedoorservice 148 624 views 41 15.
Use a punch and hammer to drive the roll pin out of the drive shaft.
How to replace a gear and sprocket in a chamberlain liftmaster sears craftsman garage door opener duration.