4. It is a production unit owned by Indian Railways, for which it manufactures diesel-electric locomotive and its spares part. It was established in collaboration with M\s ALCO (American Locomotive Company), USA. Founded in 1961, the DLW rolled out its first locomotive three year later, on January 3, 1964. It has evolved diesel-electric locomotive manufacturing plant, capable of building all components of the locomotive in-house, including the engine, super structure, and fabricated bogies and under frames.

5. Diesel-electric locomotive were introduced to exploit their versatility, low maintenance requirements and cost effectiveness as compared to steam engine. Got its first ISO certification in 1997 and ISO-9001 and ISO-14001 in December 2002. Today, it (DLW) produces advance locomotive having output range from 2600 to 4000 hp. It has supplied locomotive to other countries such as Sri Lanka, Bangladesh, Malaysia, Tanzania, and Vietnam etc.

6. Pre-inspected engine block, crankshaft, cylinder liners, pistons, connecting rods, cylinder heads, exhaust manifold, turbo supercharger and all related piping are used in assembly of engine. Electrical machines like traction alternator, auxiliary generator and exiter are there after coupled on the engine.

7. EngineALCO- 251 Power Rating800 KW, 1500 KW, 1750 KW, 2000 KW, 2200 KW, 2400 KW Speed of engine1000 rpm Cooling arrangementRadiator/ Heat exchanger Control systemProgrammable logic controller (PLC) Starting systemAir motor/ DC motor

11. Bull Gear Journals Driving shaft Tire Axle Wheel Centre

12. Tested engines are receives from Engine Division. Similarly under frames are received from Loco frame shop and assembled trucks from Truck machine shop. Super structure compartments and contractor compartment are received from respective manufacturing and assembly shops of Vehicle Division. Important alignments like crank shaft deflection, compressor alignment and Eddy Current clutch/radiator fan alignment are done during assembly stage.

14. Electrical control equipments are fitted and control cable harnessing is undertaken. The complete locomotive is thus assembled before being sent onwards for final testing and spray painting. All locomotive are rigorous tested as per laid down test procedures before the locomotive is taken up for final painting and dispatch for service.