Sri Lanka Railways M4

Sri Lanka Railways M4

Class M4 No. 745 Ruwanweli
Type and origin
Power type Diesel-electric
Builder Montreal Locomotive Works
Order number M-6080
Serial number M-6080-01 to M-6080-14
Model MX-620
Build date 1975 onwards
Total produced 14
Specifications
Configuration:
 ​
 • UIC Co′Co′
Gauge 5 ft 6 in (1,676 mm)
Wheelbase Bogie: 11 ft 2 in (3,404 mm)
Length 58 ft 3 in (17.75 m)
Loco weight 93 long tons (94 t; 104 short tons)
Fuel type Diesel
Prime mover ALCO 251C3
Engine type 4 stroke V12 diesel
Cylinders 12
Loco brake Air, Vacuum, Dynamic (Some vary)
Performance figures
Maximum speed Design: 104 km/h (65 mph)
Service: 65 km/h (40 mph)
Power output 1,750 hp (1,300 kW)
Career
Operators Sri Lanka Railways
Class M4
Number in class 14
Numbers 743–756
Official name See table
First run 1975

The Sri Lanka Railways M4 is a class of diesel-electric locomotive manufactured in Canada by Montreal Locomotive Works. Fourteen of the manufacturers' model MX-620 were imported in 1975.

This was the longest locomotive in the Sri Lanka Railways previously. All units are still operational. Normally they are not used beyond Polgahawela on the main line. Usually not going upcountry now. But have gone there regularly until the previous decade.

They are painted in a livery of dark blue, light blue, silver with yellow striping; although No. 752 Point Pedro was painted in a special ICE livery.

Fleet

Number Name Notes
743 Madhu Air Brakes Added
744 Sigiri Air Brakes Added
745 Ruwanweli Air Brakes Added
746 Namunukula Air Brakes Added
747 Kelani Air Brakes Added
748 Walawe Air Brakes Added
749 Dunhinda Air Brakes Added
750 Isurumuni Air Brakes Added
751 Diyaluma Air Brakes Added
752 Point Pedro Special ICE livery was on this locomotive. Now normal livery.
753 Samanala Imported with Dyn Brakes. Air Brakes Added
754 Menik Imported with Dyn Brakes. Air Brakes Added
755 Mahaweli Imported with Dyn Brakes. Air Brakes Added
756 Laxapana Imported with Dyn Brakes. Air Brakes Added
Class M4 at Peradeniya Junction

References

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