 The locomotives had weights attached between the frames to increase adhesion.Over time, most of the Class 14C family of locomotives were "rebalanced" by having these weights increased or reduced to redistribute, increase or reduce the axle loading and adhesive weight by altering the loads on the individual coupled wheels, leading bogies and trailing pony trucks.Coupled wheel axle loading adjustment was achieved by attaching steel boxes, filled with an appropriate amount of lead, over each axle between the frames.