How To Replace Garage Door Opener Sprocket

This is a video on how to change the gear sprockets in a craftsman garage door opener. Fasten the sprocket cover back in place and plug in the power to the garage door opener. Now you should find you can raise your door using the opener without the chain jumping.

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Use a step ladder to access the garage door opener s power cord and motor unit.

How to replace garage door opener sprocket.

Lower the motor unit down. If it is just a gear you are replacing you should remove it after you have unbolted assembly and replace it with a new one by going in reverse order. After adjusting the chain lubricate it with the recommended lubricant or lithium grease that s used on bicycle chains. If it is the entire assembly you need just replace the assembly with your new one.

Remove the chain and cable assembly. 10 return to the floor and pull the manual release cord to refit the trolley to the chain arm putting your door opener back into automatic mode. This was a craftsman model 139 53976srt. Simply remove those for replacement.

Position a work table near the area under your motor unit to hold the garage door opener. Refer to the opener s installation instructions or the manufacturer s website for the correct chain tension and.

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