Diesel Electric Locomotives of Sri Lanka Railways | Class M Series

#Sri Lanka Locomotives #Sri Lanka Train Journeys
#Class M1 #Class M2
#Class M3 #Class M4
#Class M5 #Class M6
#Class M7 #Class M8
#Class M9 #Class M10
#Class M11 #Class M Series

CLASS M1 SERIES
Imported from 1953
Removed from service from 1986
25 Nos. of Locomotives
Class M1 539 to 563
Class M1 Was Built by Brush Bagnail Traction Company - UK
89 Tons Weight, V12 Four Stroke Diesel Engine
(A1A)(A1A) Axle Arrangement
1000 hp Power Output

CLASS M2 SERIES
Imported in 1954 - 1966
4 Sub Classes
14 Nos. of Locomotives
13 Nos. of Locomotives are in Operation
Class M2: 569, 570, 571 (Destroyed), 572, 573
Class M2A: 591, 592, 593
Class M2B: 594, 595
Class M2C: 626, 627
Class M2D: 628, 629
Class M2, M2A, M2B & M2C Were Built in, General Motors Diesel - Canada
M2D Was Built in Electro-Motive Division - USA
EMD G12 Locomotive Model
79 Tons Weight, V12 Two Stroke Diesel Engine
(A1A)(A1A), M2C - BO'BO'
1425 hp, M2D - 1310 hp, 112 km/h Max Speed

CLASS M3 SERIES
Manufactured by Ceylon Government Railway
02 Nos. of Locomotives
Currently, Locomotives Were Scrapped
Class M3 589 in 1956
Class M3 590 in 1958
Officially named as 'Jayanthi'
BO-BO Axle Arrangement
47 Tons Weight
6 Cylider Four Stoke Diesel Engine
89 km/h Max Speed
2 x 180 hp Power Output

CLASS M4 SERIES
Imported in 1975
14 Nos. of Locomotives
All Locomotives are in Operation
Numbered Class M4 743 to 756
Class M4 was Built by Montreal Locomotive Works - Canada
MX-620 Locomotive Model
94 Tons Weight, V12 Four Stroke Diesel Engine
CO'CO' Axle Arrangement
1750 hp Power Output

CLASS M5 SERIES
Imported in 1979
16 Nos. of Locomotives Imported Class M5: 767 to 782
After Few Years of Operation M5 Locos Were Taken Out of Service Due to Technical Issues
Then Some Selected Locos Were Refurbished into 3 Sub Classes
Class M5A: 769 Fitted With MTU 396TC13 Prime Mover
Class M5B: 768, 772, 777, 778 Fitted With Paxman Valenta RP200L Prime Mover
Class M5C: 767, 771, 775, 776, 779, 781, 782 Fitted With Caterpillar 3516 DITA P' Mover
Class M5 Was Built by Hitachi Company - Japan
Then Class M5A, M5B & M5C Were Refurbished in Sri Lanka
66 Tons Weight, V12 Diesel Engine
B-B Axle Arrangement
97 km/h Max Speed
M5 - 1640 hp, M5A & M5B - 1150 hp & M5C - 1600 hp

CLASS M6 SERIES
Imported in 1979
16 Nos. of Locomotives
14 Nos. of Locomotives are in Operation
Class M6: 783 to 798
Loco Numbers 793 and 798 Were Destroyed by Terrorist Attacks
Class M6 Was Built by Thyssen-Henschel in Kassel, West Germany,
Under Licence from Electro-Motive Division of USA
EMD G22M Locomotive Model
87 Tons Weight, V12 Two Stroke Diesel Engine
(A1A)(A1A) Axle Arrangement
1650 hp Power Output, 96 km/h Max Speed

CLASS M7 SERIES
Imported in 1981
16 Nos. of Locomotives
15 Nos. of Locomotives are in Operation
Class M7 803 was Condemned
Numbered from Class M7 799 to 814
Class M7 was Built by Brush Traction Company – UK
66 Tons Weight, V8 Two Stroke Diesel Engine
994 hp Power Output
80 km/h Max Speed

CLASS M8 SERIES
Imported in 1996 - 2001
Only One Sub Class as M8A
10 Nos. of Locomotives - M8(8), M8A(2)
All Locomotives are in Operation
Numbered Class M8 841-848 & Class M8A 877, 878
Class M8 & M8A were Built by, Diesel Locomotive Works, Varanasi, India
WDM-2 Locomotive Model
112 Tons Weight, M8 (V16) & M8A (V12) Four Stroke Diesel Engine
M8 - 2800 hp, M8A - 2200 hp
120 km/h Max Speed

CLASS M9 SERIES
Imported in 2000
10 Nos. of Locomotives
Numbered as Class M9 864 to 873
All Locomotives Were Out of Service for Several Years,
After Few Years of Operation
In 2010 the process of returning the fleet to service began
Now 5 Nos. of Locomotives (864, 866, 867, 870, 872) are in Operation
Class M9 Locomotives Were Built by, Alstom Company - France
AD 32C Locomotive Model
100 Tons Weight, V12 Four Stroke Diesel Engine
866 & 867 Locos Were Replaced With New Prime Movers
CO'CO' Axle Arrangement, 3200 hp, 110 km/h Max Speed

CLASS M10 SERIES
Imported in 2012
Only One Sub Class
9 Nos. of Total Locomotives; M10 (3) & M10A (6)
All Locomotives are in Operation
Numbered as Class M10 - 915, 916 & 917 & Class M10A - 941 to 946
Class M10 & M10A Locomotives Were Built by, Diesel Locomotive Works, Varanasi, India
WDM-3D Locomotive Model
117 Tons Weight, V12 Four Stroke Diesel Engine
C-C Axle Arrangement
2300 hp, 120 km/h Max Speed

CLASS M11 SERIES
Imported in 2018 - 2019
10 Nos. of Total Locomotives
Numbered as Class M11 - 949 to 958
Class M11 Locomotives Were Built by, Diesel Locomotive Works, Varanasi, India
EMD 12-710G 3C Locomotive Model
130 Tons Weight
3000 hp, 120 km/h Max Speed

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