Originally Posted by
krapes
The main thing I'm concerned with is the tension that should be applied on installing the crank this time. Apply as much force as necessary or go for a specific amount of torque? If I regularly tighten my cranks, should I not have this problem again?
Torque specs here:
http://parktool.com/repair/readhowto.asp?id=88 . A square-taper crank bolt requires 25-35 foot-pounds of torque. Grease the threads on the bolt. Whether you grease the tapers on the spindle is up to you- there's opinions on both sides. Rechecking the torque after riding a week is a good thing, IMO, but after that they should not come loose.