Replace the drive gear.
How to change drive gear on craftsman garage door opener.
2 drive out the roll pin holding the old gear in place with a pin punch and hammer.
With the gears back in place tighten the chain as directed in your owner s manual.
How to replace a gear and sprocket in a chamberlain liftmaster sears craftsman garage door opener duration.
Lay the chain on the garage floor while you complete the repair.
4 replace gear mechanism lining up the screw holes on top.
Slide the outer trolley away from the inner trolley.
This is a video on how to change the gear sprockets in a craftsman garage door opener.
Remove the outer nut and lock washer from the trolley threaded shaft and pull the threaded shaft out of the trolley.
Replace the cover on the garage door opener plug it back in and start enjoying your now functioning garage door opener.
Put a thin layer of the grease included in the kit on the gear.
Pull the chain off the motor unit sprocket and out of the chain spreader.
Insert the new roll pin through the gear and drive shaft.
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3 lube all the teeth of the replacement gear and the worm gear it engages then place the new gear on the shaft and drive the roll pin back in to hold it.
Pull the drive gear off the drive shaft.
Step by step garage door opener gear fix.