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File:844.jpg UP 844 in Salina, Kansas Union Pacific 844 Specifications Configuration: • Whyte 4-8-4 Gauge 1,435 mm (4 ft 8+ 1 ⁄2 in )Wheelbase 98 ft. 5 in. (locomotive and tender ) Adhesive weight 266,490 lb. Total weight 907,890 lb. Fuel type No. 5 fuel oil Tender cap. 23,500 gallons water, 6,200 gallons oil Firebox: • Grate area grate removed in 1945
tubearea=2,204 ft² Boiler 86-3/16 in. diameter Boiler pressure 300 psi Heating surface: • Firebox 442 ft² • Flues 1,578 ft² • Total surface 4,224 ft² Superheater: • Heating area 1,400 ft² Cylinder size 25 in. diameter, 32 in. stroke
Career Delivered 1944 Retired never Disposition operates in occasional excursion service
Union Pacific 844 or UP 844 is a 4-8-4 steam locomotive owned by Union Pacific Railroad . It is unique in that it is the only steam locomotive never retired by a North American Class I railroad . It is now used on excursion trains.
From 1962 -1989 , this locomotive was numbered UP 8444 due to a conflict with the railroad's numbering plan for the EMD GP30 locomotives that UP owned at the time. After the conflicting GP30 was retired from service in June 1989 , 8444 was renumbered back to 844.
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