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                    U18B

Production Span: 1973-1976
Amnt. Produced:  163
Length:                  54' 8"
Height:                   14' 9 1/4"
Weight:                  238,000 lbs.
Prime mover:       8-cyl FDL    
Horsepower:        1,800
Tractive Effort:      54,000 lbs.
Fuel Capacity:      2,000 gallons
Gear Ratio:           74:18
Max Speed:           70 Mph		                     U23B

Production Span: 1968-1977
Amnt. Produced:  473
Length:                  60' 2"
Height:                   14' 9 1/4"
Weight:                  270,000 lbs.
Prime mover:       12-cyl FDL    
Horsepower:        2,250
Tractive Effort:      60,500 lbs.
Fuel Capacity:      3,250 gallons
Gear Ratio:           74:18
Max Speed:           70 Mph		                     U25B

Production Span: 1961-1966
Amnt. Produced:  474
Length:                  60' 2"
Height:                   14' 7"
Weight:                  266,000 lbs.
Prime mover:       16-cyl FDL   
Horsepower:        2,500
Tractive Effort:      60,000 lbs.
Fuel Capacity:      2,900 gallons
Gear Ratio:           74:18
Max Speed:           70 Mph
                    U28B

Production Span: 1966
Amnt. Produced:  148
Length:                  60' 2"
Height:                   14' 9 1/4"
Weight:                  270,000 lbs.
Prime mover:       16-cyl FDL    
Horsepower:        2,800
Tractive Effort:      62,000 lbs.
Fuel Capacity:      3,250 gallons
Gear Ratio:           74:18
Max Speed:           70 Mph		                     U30B

Production Span: 1966-1975
Amnt. Produced:  294
Length:                  60' 2"
Height:                   14' 9 1/4"
Weight:                  272,000 lbs.
Prime mover:       16-cyl FDL    
Horsepower:        3,000
Tractive Effort:      63,500 lbs.
Fuel Capacity:      3,250 gallons
Gear Ratio:           74:18
Max Speed:           70 Mph		                     U33B

Production Span: 1967-1970
Amnt. Produced:  137
Length:                  60' 2"
Height:                   14' 9 1/4"
Weight:                  275,000 lbs.
Prime mover:       16-cyl FDL   
Horsepower:        3,300
Tractive Effort:      64,000 lbs.
Fuel Capacity:      3,250 gallons
Gear Ratio:           74:18
Max Speed:           70 Mph
                    U36B

Production Span: 1969-1974
Amnt. Produced:  125
Length:                  60' 2"
Height:                   14' 9 1/4"
Weight:                  268,000 lbs.
Prime mover:       16-cyl FDL    
Horsepower:        3,600
Tractive Effort:      60,000 lbs.
Fuel Capacity:      3,250 gallons
Gear Ratio:           74:18
Max Speed:           70 Mph		                     U50
(B+B-B+B wheel arrangement)
Production Span: 1963-1965
Amnt. Produced:  26
Length:                  83' 6"
Height:                   15' 10"
Weight:                  560,000 lbs.
Prime mover:       (2) 16-cyl FDL    
Horsepower:        5,000
Tractive Effort:      140,000 lbs.
Fuel Capacity:      5,000 gallons
Gear Ratio:           74:18
Max Speed:           75 Mph
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