About the industry: Diesel Locomotive Works [DLW] is production unit under the ministry of railways. DLW is only manufacture of diesel electric locomotive with ALCO & General Motors [GM] based technologies in the words.

1. SKYLINE INSTITUTE OF ENGINEERING & TECHNOLOGY GREATER NOIDA
INDUSTRIAL TRAINING IN DLW VARANSI
BY-PARVIND KUMAR GUPTA TO – YOGESH Kr. YADAV
MECHANICAL ENGINEERING

2. TABLE OF CONTENT
 INTRODUCTION
 PRODUCTION
 PRODUCTS OF DLW
 WORKSHOP
 TRUCK MACHINE SHOP
 LIGHT ASSEMBELY SHOP
 LOCO PAINT SHOP
 LOCO MACHINE SHOP
 SAFETY RULE FOR MACHINE TOOL

3. INTRODUCTION
Diesel Locomotive Works [DLW] is production unit under
the ministry of railways. This was setup in collaboration
with American Locomotive Company [ALCO] USA in 1961
and the first locomotive was rolled out in 1964.
DLW is only manufacture of diesel electric locomotive
with ALCO & General Motors [GM] based technologies
in the words.
.
DLW Manufactures ALCO and GM locomotives 3500 HP
and 4500 HP respectively.
DLW got its first ISO certification in 1997.

4. LOCOMOTIVE
A Locomotive is a railway vehicle that provides the
motive power for a train.
The word locomotive originates from latin loco – “from a
place” + latin motivus – “causing motions” and is shortest
form of term locomotive engine.
The first sucessful locomotive were built by Cornish
inventor Richard Trevithick in 1804.

5. PRODUCTION
DLW produces ALCO locomotives , GM locomotives .
DLW has an annual production of 327 locomotives.

6. PRODUCTS OF DLW
WDG4 – 4000 HP Traffic locomotive.
WDG4 – 4000 HP Broad Gauge High Speed
WDM3C – 3300 HP Broad Gauge Mixed Traffic
Locomotive
WDP3A - 3100 HP Broad Gauge High Speed
Passenger Locomotive

7. 01/10/16

8. WORKSHOP
The DLW workshop is located in Varanasi in an area of about 300
Acers.
In the workshop the engines are produced and exported to about
10 countries in Asia.
Parts of the locomotive are made and assembled in different
parts of workshop and then finally assembled to form the
locomotive.

9. 01/10/16
My four week training was confined to four
different sections
LAS
LMS
LPS
TMS

10. TRUCK MACHINE SHOP
 In this shop I have seen the how assemble the wheels in truck.
 Firstly they shift the wheels in axles shaft with the help of wheel
pressing upto exactposition.
 Then the arrangement of axles and wheel assembly is mount on
the truck (bogie) .
 Truck is made by casting or machining with iron or alloys metals.
 Now this assembly is transfer different sections where mount the
TRACTION MOTOR .
 And further it send into the frame section where joint the truck with
the frame.

12. LIGHT ASSEMBELY SHOP
 In LAS I have seen there are step by step process for the
assembled the locomotive.
 The complete locomotive is thus assembled before being
send onwards for final testing and spray painting.
 Tested engines are received from engine divison(Loco
Frame Shop) and assembled trucks from Light Assembly
Shop.
 Important aligment like crankshaft deflections,compressor
aligment and eddy current, cluth, radiator, fan etc. are
done during assembly stage.

13. 01/10/16

14. LOCO PAINT SHOP
In the loco paint shop the loco is spray painted by
the air tight paint booth.

15. The cleaning in done by high pressure air and is known as
air cutting.
First primer coating is done on loco and then after
different coatings are done on the loco.
It takes 4-5 days for the completion of paint on one loco.

16. LIGHT MACHINE SHOP
This machine deals with the machining of small componet required
for power unit such as cam shafts,connecting rod,gears,levers,feul
pumps supports,piston,nut and bolts,bushes,various shaft etc.

17. The Light Machine Shop divided into the following sections:
1.Shaper Section
2.Lathe Section
3.Milling Section
4.Grinding Section
5.Jig Section

18. SAFETY RULES FOR MACHINE TOOLS
 Do no operate any machine tool without proper lighting.
 Never wear rings, watches, jewellery, or bracelets while
working around the machine.
 Always stop the machine before cleaning it or taking
measurements of the workpiece.
 Always wear a safety glasses or goggles while operating
machine tools.

19. 01/10/16