"clocking" meaning the veins in the power steering pump have to be in the same slot they came out of. I'm rebuilding my power steering pump the veins all fell out of the housing and they need to be put back in the same order they came out of, the veins have to be in their own slot you can't mix them up.
I dont mean it doesn't line up, it does. I learned the term "clocking" by a pump rebuilder and a mechanic both used that term.