Track Chain
The chain on my garage door frequently comes off the track (gondola) when I open the door. Corrective Action?
Could be that your chain is loose, or the idler gear is worn out on the end of the operator. you can tighten the chain on the operator to where the chain is about 1/4 to 1/2 inch above the bottom of the rail. dont tighten it too much or it will come off also, there is also, too much is too much in this case. Also check the drive gear on the operator, it could have a worn out bushing under it also. It would help to know what kind of operator you have , that would help out alot also.....
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