Morrison-Knudsen TE56-4a | 
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| Data Sheet Information Compiled by:   Jean-Denis Bachand | 
| New: 7 Novembr 2008 | 
Artwork by:  Jean-Denis Bachand | 
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|  Builder: ALCO/MLW | 
Engine:  251B  | 
|  Cycle:  4 | 
Bore & Stroke: 9 X 10 | 
|  RPM Max/Min: | 
1025 / 350 | 
| Type: V12 | 
Total Horsepower:  1600 | 
| Main Generator: GE | 
Model:  581 | 
| Gear Ratio: 74:18  | 
Speed: 65 mph   | 
| Trucks:   4-Wheel | 
Configuration: B-B  | 
| Traction Motor Blowers: 2 | 
Model: Mech Drive | 
| Weight: 247,000 lbs | 
Traction Motors: GE 753 (4)   | 
| Tractive Effort (starting) 60,000 lbs @ 25% | 
Tractive Effort (continuous): 52,500 lbs @ 10.0 mph | 
| Multiple Unit Capability: Yes | 
Dynamic Braking:  Yes | 
| Auxilary Generator:  GE GMG139 GY24 | 
Alternator:  n/a | 
| Air Compressor:  Westinghouse | 
Model:  3CDC | 
| Air Brake:  Westinghouse | 
Model:  26L | 
| Quantity Built:  10 
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Dates: 9/1974 to 3/1976 | 
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| Exterior Dimensions
 |  TE56-4a | 
| Total Length | 
55'-11.2" | 
| Wheel Diameter | 
40" | 
| Truck Wheel Base | 
9'-00" | 
| Height to Top Hood | 
14'-06" | 
| Height to Top Cab  | 
14'-05.2" | 
| Cab Width | 
10'-00" | 
| Hood Width | 
9'-11.2" | 
| Height of Walkway | 
7'-10" | 
| Walkway Width | 
5'-00" | 
| Center Bolster | 
30'-00" | 
| Center Front Truck to Front Pilot | 
9'-03.2" | 
| Center Rear Truck to Rear Pilot | 
8'-09.2"  | 
| Distance between Truck Centers | 
39'-04" | 
| Minimum Turning Radious | 
30 degrees  | 
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| Fuel Oil:  3200
 | Lubricating Oil:  111 | 
| Engine Cooling Water: 70.5
 | Sand Capacity:  26 cu. ft. | 
Options: 
- TECU controls each traction motor
 - IGBT Controls (liquid-cooled)
 - Engine turbocharged and aftercooled
 - Tier 2 EPA Emission Level
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| - | 
- Contemporary Diesel Spotter's Guide by Louis A. Marre and Jerry A. Pinkepank 
 - Contemporary Diesel Update by Louis A. Marre and Jerry A. Pinkepank 
 - Delaware & Hudson by Jim Shaughnessy (second edition) 
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