how do I tighten this chain

Old 12-11-16, 08:00 AM
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how do I tighten this chain


I'm trying to tighten my garage door chain, I view many videos online but they show a different type of bolt system than the one I have. The garage door is a early eighties Barmac with a chain
I tried to turn in but it twisted the chain.Name:  IMG_1111.jpg
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Old 12-11-16, 10:39 AM
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Appears that the lock nut gets loosened and the center piece turns to tighten or loosen both ends. I'll bet it's just corroded and not turning smoothly.

May need to remove the link to the chain, remove, clean, and reinstall.

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