Telling Time

My hands are always working, turning to the right My voice chimes out loudly certain times of the day I strike powerfully and proudly at midnight I am often referred to as a great Father, even grand I stand tall with a solid body and heavy weights You must help me run smooth and use my key I most likely will survive decades and centuries but I may slow and need some work and tuning In return I will always be dependable, a friend for all time