M4 749 arriving Ragama with Puttalam bound Express train (No 3425 Panadura-Puttalam) in 21.06.2025

SLR Class :- M4

Manufactures Model :- MX 620

Introduction year :- 1975

No of Locos :- 14

Loco Nos :- 743 to 756

Builder :- Montreal Locomotive Works

State :- Canada

Prime Mover :- ALCO V12 25 1 C3

Mode of Power transmission :- Diesel Electric (AC to DC Power Transmission )

Power :- 1700 hp

rpm :- 1050

Weight :- 98 ton

Length :- 58' 3"

Wheel arrangement :- Co-Co

Brake system : - Air and Vacuum

Max speed :- 104 Km/h

Gauge : - 1676 mm

Type :- Locomotive

Purpose/Used line :- Main line Passenger and Freight train Presently not to run beyond Rambukkana.

 

M4 753,754,755 and 756 were Special designed with Dynamic Brake for Upcountry (Colombo to Badulla) Rail track.

M4 750 damaged due to Bomb blast at near Vavniya in 2000 back in service after repair.

M4 752 re painted Red and Yellow colours for use Jaffna Intercity. again Repainted Blue & Silver.

Upgraded with Air brake at C.M.E. Ratmalana.

M4 751used for Inaugural run “Yal Rani” Passenger Train Between Kankasantrei Murukandi in 11.07.2022

All Locomotives are presently on service.

 

M4s were named,

743 : Madu

744 : Sigiri

745 : Ruwanweli

746 : Namunukula

747 : Kelani

748 : Walawe

749 : Dunhida

750 : Isurumuni

751 : Diyaluma

752 : Point-Pedro

753 : Samanala

754 : Menik

755 : Mahaweli

756 : Luxapana

 

Information as at 15.10.2025

 

Done