 In addition to the first three batches, one more batch would be acquired in 1922, all four with different maximum axle loadings, to bring the total in the class to 73.Through reboilerings, rebalancings and cylinder bushings during its service life, this single class eventually ended up as six distinct locomotive classes with two boiler types and a multitude of axle loading and boiler pressure configurations.In 1919, a third batch of twenty Class 14C locomotives was ordered from the Montreal Locomotive Works (MLW) in Canada.