After the grouping of 1925, the Great Southern Railways classified them Class 551 or Class J26, and fitted them with new smokeboxes, safety valves and chimneys. The nameplates, builder’s plates and sandbox numbers were removed at this time and replaced with a numberplate.[2]
After 1920 they were forced to move from the Achill branch when that became restricted for 6 wheel coupled locomotives.[1]
Their low axle loading gave them good utility and they were often popular, though some duties stretched their abilities.[3]
Three engines, 553, 555 and 560 were fitted with enlarged cabs and modified footsteps. This enabled an additional ton of coal to be carried and they successfully worked on the enclosed Waterford and Tramore section.[3][1]
Model
An etched-brass kit of the Class E / J26 has been produced by Studio Scale Models including brass etches and cast white metal parts.[4]