Heat the gear hub a little with a Propane torch, but don't overdo it to the point you damage the new fiber gear. Make sure the timing marks will line up properly as the teeth roll into place. If you have an air chisel, it taps the new gear on much quicker and more efficiently than hand hammering. Use a 1/2" drive socket the size of the gear hub and an air chisel bit that fits the square drive hole to hammer it on. Pull the fuel pump, and have someone hold the cam forward with a pry bar through the pump hole while you're driving the new gear into place.
Jerry
