What is green Loctite meant to be used for? I only ask because removing the chainring bolts from the granny ring on my XT crankset resulted in this...
One new T30 tool (rather than cheap bit) and they came out with green stuff on them. Bloody tight they were!
Loctite shouldn't cause that. It's not glue, just holds threads in place, but only should take a little extra torque to break the stuff to free the bolt. Only time I've bust a key is after over tightening a bottom bracket cup (failure to remember one of them goes clockwise to undo!). None of the high torque stuff needs loctite anyway. Chainring bolts don't need much torque and a little loctite just helps keep them in place. My bet is they were gorilla tightened in the first place.
ReplyDeleteHad a (very) quick Google about green loctite. Apparently it isn't supposed to give up without heat and an impact/shock. I used neither, hence the struggle I think. It was the ones into the crankset rather than the 2 part nut/bolt ones so much easier to over tighten though.
ReplyDeleteOnly ever used the regular blue loctite or the white stuff that comes from the factory on some bolts. Not sure about the green stuff.
ReplyDeleteSnap (no pun intended) :-)
ReplyDeletewow takes a lot to break them, even cheap ones!
ReplyDeleteHad crank in one hand and socket driver in the other so probably not a simple twisting force, probably a bit of a bend as well but the replacement proper T-handled tool still had a noticeable twist in the shaft before they went, thought something else was going to break before it actually undid. Went with a very strange grinding noise, and then still very still for a couple of full turns. It certainly works the green stuff!
ReplyDeleteGreen loctite I believe is bearing lock and as Tim Moore says, blue is good for stopping threads undoing themselves.
ReplyDeleteI use blue on my truvativ crank arms as they kept undoing themselves, just make sure the threads are clean before applying.