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4000 H.P. DIESEL PASSENGER LOCOMOTIVE
Designed and Built For
THE GREAT NORTHERN RAILWAY COMPANY
By Electro-Motive Division * General Motors * La Grange, Illinois
This diesel passenger locomotive consists of two lead units. Each unit is equipped with two General Motors 12 cylinder, V-type, 2-cycle Diesel engines having a bore of 8 1/2 inches, stroke 10 inches and a unit fuel injection system. These engines are rated at 1000 HP each at 800 RPM, providing a total of 4000 HP for the locomotives. Each engine is directly coupled to a DC generator. Current from these generators is fed through control apparatus to four traction motors - two to each truck - and geared directly to the driving axles. Two six-wheel trucks are used in each of these units for smoother operation in the upper high-speed range, middle wheels being designed to aid in weight distribution only.
Overall length over couplers: 142'-2 1/2"
Maximum width over grab irons: 10'-6 7/8"
Width over body posts: 9'-10"
Height overall above rails: 14'-10"
Wheel diameter: 36"
Rigid wheel base of trucks: 14'-1"
Roller bearing journals: 6 1/2"-12"
Truck swing designed for 21 degree curve or 274-foot radius
Distance between truck centers (each unit): 43'-0"
Fuel oil: 2400 gals.
Sand: 32 cu. ft.
Lubricating oil: 560 gals.
Engine cooling water: 600 gals.
Boiler water: 2400 gals.
Total weight fully loaded: 634,240 lbs.
Weight with one half of variable supplies: 613,500 lbs.
Maximum tractive effort at rim of driving wheels at 25% adhesion: 103,380 lbs.
The Great Northern Railway was first of the northern transcontinentals to utilize 5400 HP Diesel freight locomotives, built by Electro-Motive Division of General Motors. A large fleet of these and 6000 HP diesels transport freight faster over mountain territory.