I have read on this forum on several occasions that the limb bolts should be tightened down and then backed out one-quarter turn. Why is this necessary? What purpose is served by backing out the limb bolts one-quarter turn? Just curious.
It’s not a requirement but a good practice IMHO. Limb bolts, water supply valves (like under your sink or your commode), all kinds of things that aren’t adjusted all that often. It helps prevent things from freezing in place and gives a little room in both directions when they do get tight.
And I’ve seen and had several cases of a popping noise when the limb bolts are tight. Especially in the Dren series for some reason. Quarter turn off tight and the noise stopped.
You just don’t have any idea how much compression you are putting on the limb material when the limb bolts are tightened all the way down. “All the way down” is just suppose to be a ‘snug’ fit, but just an 1/16th of a turn more and you could be applying 100# of compressive force. So, ‘snug then back off’ is a good practice. FWIW, I only back off about 1/8th turn or just enough that a slip of paper can be pulled free.
The other very practical reason is what has already been mentioned … the ability to break free the threads in either direction, and room to apply a penetrant (WD-40, Wintergreen, etc.) if need be.
If you hunt in really wet, or corrosive environments, I’d recommend coating the limb bolts with a Marine-Grade bearing grease in addition to backing the bolt off from snug…always good insurance.
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