It will take 10 minutes tops and only requires a 1 4 in.
Garage door gear repair.
Slide the outer trolley away from the inner trolley.
With the gears back in place tighten the chain as directed in your owner s manual.
Start by unplugging the motor.
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Lay the chain on the garage floor while you complete the repair.
Now you need to install the new helical gear assembly.
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.
It can be a complicated repair but not impossible to do yourself.
Just follow these steps.
Several components will need to be removed to get at the gear.
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This is a video on how to change the gear sprockets in a craftsman garage door opener.
You ll need to get a replacement gear set.
Pull the chain off the motor unit sprocket and out of the chain spreader.
Garage door opener repair or adjust for home business.
Remove the light cover take out the lightbulb disconnect the switch and safety sensor wires remove a few screws unplug the board and you re done.
With qualified technicians that have 13.
This was a craftsman model 139 53976srt.
It s one of the most common garage door opener repair problems there is.
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Remove retaining screws from the cover.