just hold it like that when the three segments have been bolted together the two fitters carefully push the unwieldy component through the engine the camshaft is made of surface hardened steel and will not be replaced throughout the entire life of the engine after two days the work at station 1 is completed one of the 25 mega diesel engines manufactured here each year is transported to the next station by overhead gantry the rotary station is even bigger than the first station here fitters will turn and wheel the Colossus