Originally Posted by
dsbrantjr
The only one-time use bolts I am aware of are on aircraft engines and (I think) Mercedes-Benz connecting rod bolts.
Theres actually a lot of automotive bolts that are one time use, like many cylinder head bolts (especially VW/Audi), some brake caliper bolts, and some others.
Originally Posted by
alcjphil
That bolt can be reused pretty much as often as you want to. When opening up an Ultratorque crank, pay particular attention to the spring clip on the drive side cup, you will see it just behind the crank. It is absolutely needed for the cranks to work properly. When removing the cranks, remove the clip before you remove the centre bolt. When you reinstall, install the drive side crank, then put the clip into place, making sure that the clip fits fully into the small holes on bottom bracket cup. This can be tricky because you have to work behind the drive side chainrings. Once the cup is in place, you can install the non drive side crank arm and then tighten the centre bolt. With practice, installation only takes about 5 minutes
Awesome thanks for the tips. I remember from building it that clip was a PITA, and I recall theres like a wobbly washer inside the bearing cup I need to make sure stays there right? Thanks again