Remove the outer nut and lock washer from the trolley threaded shaft and pull the threaded shaft out of the trolley.
Garage door gear repair.
Replacing a circuit board sounds like a scary garage door repair but it s really quite easy.
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Start by unplugging the motor.
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Garage door opener repair or adjust for home business.
Several components will need to be removed to get at the gear.
Just follow these steps.
You ll need to get a replacement gear set.
Slide the outer trolley away from the inner trolley.
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.
Lay the chain on the garage floor while you complete the repair.
Remove retaining screws from the cover.
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.
Now you need to install the new helical gear assembly.
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It will take 10 minutes tops and only requires a 1 4 in.
With the gears back in place tighten the chain as directed in your owner s manual.
This was a craftsman model 139 53976srt.
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.
With qualified technicians that have 13.