Why is my axle nut loose?

The stub axle nut puts preload on the inner and outer bearings inner race and the spacer in between the two bearings. When CV axles become excessively worn, the joints will become loose and click when turning.

Why does my right crank arm bolt keep coming loose?

Anyone else’s right crank arm bolt keep coming loose? (Rail 7) Mine does every single ride now. Surprised it’s not an interference fit (the crank arm), it comes right off. It seems like a design issue, and I’m not sure how to fix it. Open to suggestions! My left crank arm bolt came undone the other day after 400-odd miles.

Where was the bolt that holds the left pedal on?

Last year on my previous bike I completely lost the bolt that holds the Left pedal on at the top of an epic ride at Lake Garda in Italy. Searched for ages but couldn’t find the bolt. It was just before we started the epic trails back down after doing about a 1500m climb in very hot conditions.

Why does my LHS crank bolt keep loosening?

Lost my LHS bolt during a knarly downhill & didn’t want to put the arm back on so rode out with it in my pack. Had a look this morning & the crank arm has a few knicks inside it towards the inside of the arm where it has sat halfway on moving over the steel axle.

Why does my crank wrench keep loosening up?

Dry threads have too much friction and can trip the torque wrench before the proper torque at the bolt head has been reached. Loctite performs the same function as grease in that it helps reach the proper torque. Until it sets of course. My rule of thumb is to loctite the bolts that should have it, and grease all the others.

Can a loose axle cause damage to the wheel bearing?

Yes, the vibration and movement of a loose C.V. axle nut can cause damage to the wheel bearing. Alternately, if that nut is too tight, that also can cause damage to the wheel bearing. There is a specific torque that your car’s manufacturer has specified for that nut.

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