Class W1

HENSCHEL THYSSEN (W. German). 1150hp. Imported in 1969.  Some in operation. Mainly removed from the service 20-25 year after they imported.

First Diesel Hydraulic type engine in history of railways in Sri Lanka. Manufactured according to DHG-1200 model. High RPM (~1500RPM) cause the engine worn quickly. Removal from service mainly due to lack of maintenance. Those engines needed main service after 10 years. But due to 1980 workers’ strike it wasn’t done. After that many workers were removed from the department and non skilled workers did maintenance works. Those things cause the engine to remove from service shortly.

Some engines re-engined by PAXMAN VEGA SE/RP 160 – 1250hp engines. But No. 650 and 658 are only in running condition. These two engine are also doing some light works such as shunting and hauling small goods trains and some little works inside the workshops.

In 1997 with collaboration with ADtrainz, 10 engines were reengined and reclassified as W3. No. 642, 650, 657 are also waiting for usual running jobs after repaires. These repaire are doing by using old S6 engines and also there is doubt in reliablity.

  • Builder : Henschel Thyssen, W. Germany
  • Imported in : 1969
  • Weight : 61 tons
  • Length : 12.8m
  • Power : Diesel Hydraulic 1150hp Paxman V12 12YJXL (4 stroke)
  • Maximum Speed : 80kmph
  • Axle Arrangement : B-B
  • Total number of locomotives = 45 (No. 630-674)
  • Livery : Green, Red and Yellow strip

    Class W1 # 630
    Image courtesy Mr. Charith Dissanayaka