Sri Lanka Railways M4

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.

Sri Lanka Railways M4
Type and origin
Power typeDiesel-electric
BuilderMontreal Locomotive Works
Order numberM-6080
Serial numberM-6080-01 to M-6080-14
ModelMX-620
Build date1975 onwards
Total produced14
Specifications
Configuration:
​
 • UICCo′Co′
Gauge5 ft 6 in (1,676 mm)
WheelbaseBogie: 11 ft 2 in (3,404 mm)
Length58 ft 3 in (17.75 m)
Loco weight93 long tons (94 t; 104 short tons)
Fuel typeDiesel
Prime moverALCO 251C3
Engine type4 stroke V12 diesel
Cylinders12
Loco brakeAir, Vacuum, Dynamic (Some vary)
Performance figures
Maximum speedDesign: 104 km/h (65 mph)
Service: 65 km/h (40 mph)
Power output1,750 hp (1,300 kW)
Career
OperatorsSri Lanka Railways
ClassM4
Number in class14
Numbers743–756
Official nameSee table
First run1975

This was the longest locomotive in the Sri Lanka Railways previously. All units are still operational. On regular operation they are not used beyond Polgahawela on the main line, and are not used on the hill country section. They used to travel on the full main line 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 (Intercity Express) 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 No. 745 "Ruwanveli"
    Class M4 No. 745 "Ruwanveli"
  • Class M4 No. 747 "Kalani"
    Class M4 No. 747 "Kalani"
  • Class M4 No. 748 "Walawe"
    Class M4 No. 748 "Walawe"
  • M4 No. 749 "Dunhida"
    M4 No. 749 "Dunhida"
  • Class M4 No. 754 "Manik"
    Class M4 No. 754 "Manik"
  • Class M4 No. 755 "Mahaweli"
    Class M4 No. 755 "Mahaweli"
  • Class M4 No. 756 "Laxapana"
    Class M4 No. 756 "Laxapana"

References
  • "Class M4 Locomotive". www.ceylonrailway.com.
  • {{cite book |last=Hughes |first=Hugh |year=1996 |title=Indian Locomotives: Part 4 – 1941–1990 |location=Harrow, Middlesex |publisher=The Continenetal Railway Circle |isbn=0-9521655-1-1 }

[[Category:5 ft 6 in gauge locomotives]

  special note =     class m4 756 [ laxapana ] unexpectedly visited kandy after 13 years [ the last journey was on 2007 which the class m4 756 hauled a oil train to kandy ] . this  visit was unscheduled. the siyane kumari train had no locomotive to haul the train from colombo to kandy, so the maradana diesel/electric shed decided to use the same locomotuve to pull the kandy stretch . although it did not had sanbox or air brakes , it still managed to climb the hills and arrive at the kandy railway station on 2023/05/12. on 2023 / 05 / 13 sunday , the class m4 756 left the kandy station with a class m5c locomotive pulling from the front with the siyane kumari train

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