Without hijacking this thread. Would like to pass on one other bid of advise that has worked for me.
As we have many of bolts and nuts that require Loctite, when one puts it on and torque, during the routine maintance checks, we tend to check the torque.
What I was told years ago and try to stick to, is that for critical areas, a calibrated torque wrench with a history of the torque cannot be over emphasized. So having a few torque wrenchs, I have two very good ones (250 inch pounds and 150 foot pounds) that I keep calibrated (Snap-on can do them). Used to have them checked once a year when doing more wrench turning, now more like every 2, but at least they are checked.
What I learned, if going over routinely a torque bolt or nut that was loctited, using the same torque and same wrench that stay calibrated will insure less chance of the checks actually tighten the threads more and breaking the bond of the Loctite. Little anal I know, but the point is, if one torque say to 25 foot pounds to a thread with loctite and then a couple months later rechecks with the same non calibrated torque wrench or another, it may be off enough that checking actually breaks the bond allowing the Loctite to not hold has designed.
Without a good calibrated torque wrench, it is safe to check but say at 90-95% of the original specs this help insure that breaking the bond is less likely. If for some reason the threads are loose, best to remove, clean and re loctite and torque new to specs.
This is for threads that use a thread locker such as Loctite. Dry threads are different. I keep all of my numbers written in a little book myself and have never had any of the bolts that I have torque come loose. Still I check, especially prior to a long trip.
Just my 2 cents.