If you go to each manufactuers web site for your hard drives, the will have a utility, that you can down-load and check the drives with.
The only hard drive that I've had pack up on me, keep on freezing, and then wouldn't reboot, but limped on with reformatting until it gave the ghost completley up.
But weather it could damage another component, I doubt it, unless of course it goes up in smoke and sets fire to the whole lot. But the later is very unlikley to happen.
Are you sure that it is a hard-drive playing up, because I would imagine that it would click all the time, and not just the once, is there anything in your computer that might expand with heating up, and click at a set temperture?
I would run a diognistics utilities on them first before you comdem them.