The South African Railways Class of 1980 is a diesel-electric locomotive. In 1980 and 1981, the South African Railways placed thirty General Electric type U26C diesel-electric locomotives in service. Manufacturer The Class type GE U26C diesel-electric locomotive was designed by General Electric and built for the South African Railways (SAR) by the South African General Electric-Dorman Long Locomotive Group (SA GE-DL, later Dorbyl). Thirty locomotives were delivered in 1980 and 1981, numbered in the range from to . Distinguishing features As built, the GE Classes , and were visually indistinguishable from each other. The ex Iscor Class loco­motives could be visually dis­ting­uished from the other series by the air conditioning units mounted on the cab roofs of most of them and initially, when it was still a feature unique to them, by their running board-mounted handrails. At some stage during the mid-1980s, all Class , and locomotives had saddle filters installed across the long hood, mounted just to the rear of the screens on the sides behind the cab. Since then, Class locomotives could be distinguished from the older models by the absence of the saddle filter. Modifications Fuel capacity As built, the Class had a fuel tank and interlinked bogies, while the Class was delivered new to Iscor with a fuel tank to cope with the lack of en route refueling points on the Sishen-Saldanha iron ore line. To accommodate the larger fuel tank, the inter-bogie linkage found on all other models was omitted on the Class . To be usable on the iron ore line, Class locomotives which ended up working there were modified to a similar fuel capacity. The inter-bogie linkage was removed and the fuel tank was enlarged by changing it from saddle-shaped to rectangular box-shaped. To maintain its lateral balance, a slab of metal was attached to each bogie in place of the removed linkage. In the second picture, the weld lines on the end of the enlarged fuel tank as well as the metal slab at the end of the bogie are visible. Running board-mounted handrails Class locomotives which are allocated to the Sishen-Saldanha Orex line are usually further modified by having removable running board-mounted handrails installed. All South African diesel-electric locomotives have their side handrails mounted along the upper edges of their long hoods. The ex Iscor Class , however, came equipped with additional removable running board-mounted handrails. Since these handrails are slide-fit