loco-info.com - Sri Lanka Railways class M4

In 1975, the Montreal Locomotive Works built 14 broad-gauge diesel locomotives for the Sri Lanka Railways. Their internal manufacturer's type was MX-620, but their operator designated them M4. At a weight of 93 tons, they have six axles to keep the axle load low. Power comes from an ALCO 251C3 that delivers 1,750 hp. Their design speed of 104 km/h is limited to 65 km/h in service.

General
Built	1975
Manufacturer	Montreal Locomotive Works
Axle config	C-C
Gauge	5 ft 6 in (Indian broad gauge)

Dimensions and Weights
Length	58 ft 3 in
Rigid wheelbase	11 ft 2 in
Service weight	208,337 lbs
Adhesive weight	208,337 lbs
Axle load	34,833 lbs

Boiler

Boiler

Power Plant

Power Plant

Power
Power source	diesel-electric
Top speed	40 mph
Engine	ALCO 251C3
Engine type	V12 diesel
Engine output	1,750 hp (1,305 kW)

Calculated Values
Power-to-weight ratio	0.0084 hp/lb
Adhesive weight/Total	1 : 1.00

diesel locomotive

passenger

freight

last changed: 10/2024

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