Hi guys, and girls of course....
I have a problem with my Giant, the left side crank arm keeps coming loose. Its a tapered square drive axle BB, and a Truvativ Isoflow chainset.
I've torqued the bolt up and used threadlock, but it still came loose.
I tried changing the stainless steel 8mm hex key bolt for a 14mm mild stell one to see if it had any more bite but no joy. I've also tried tightening the bolt way beyond its recommended torque, but it still comes loose.
The threads on the bolt seem fine, and I have no problem with the fixing slipping or crossthreading when I'm tightening it up.
I obviously need either a bolt or a BB but which is it????
Thanks in advance.