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Predator (Isaac Asimov's Robots in Time, Bk 1)
Predator - Isaac Asimov's Robots in Time, Bk 1 Author:William F. Wu An experimental robot and a team of human experts are on the trail of a renegade robot that has broken itself down into six pieces and launched them into the past. The team must retrieve all the pieces before the human past, and its future, is changed.
Governors are the ultimate in robot evolution. Composed of six separate robots, each can single-handedly run an entire human city. Now they have begun to fail mysteriously. The last unit, MC Governor, realizes its own destruction is approaching. The 3rd Law of Robotics comes into effect: A robot must protect its own existence.
To save itself, MC Governor breaks itself down into six component robots and launches its parts into the remote past. But there's something MC Governor doesn't know--time travel causes a change in its molecular structure. If its pieces are not returned to their own time, they will explode in a nuclear inferno, destroying the fragile web of human history . . .