This presentation is made on Dlw summer training.Thanks to all my guides,resources and my well wishers.

1. Presented by:
Saurabh Gupta
1564140092
Mechanical 4th year

2. INTRODUCTION
 The Diesel Locomotive Works (DLW) in Varanasi, India, is
a production unit owned by Indian Railways, that
manufactures diesel-electric locomotives and its spare
parts. It is the largest diesel-electric locomotive
manufacturer in India.
 Founded in 1961, the DLW rolled out its first locomotive
three years later, on 3 January 1964. It manufactures
locomotives which are variants based on the
original ALCO designs dating to 1960s and the GM
EMD designs of the 1990s. DLW has an annual production
capacity of 250 locomotives and plans to increase it to 275
based on the current demand.

3.  DLW locomotives have power outputs ranging from 2,600
horsepower (1,900 kW) to 5,500 horsepower (4,100 kW).
Currently DLW is producing EMD GT46MAC and EMD
GT46PAClocomotives under license from Electro-Motive
Diesels (formerly GM-EMD) for Indian Railways .Some of
its EMD locomotive products are WDP4, WDP4D,
WDG4D, WDG5 and others as of June 2015.
 Besides the Indian Railways, it regularly exports diesel-
electric locomotives and has supplied locomotives to other
countries such as Sri Lanka
, Malaysia, Bangladesh, Mali, Senegal, Sudan ,Tanzania,
Angola, and Vietnam and also to a few users within India,
such as ports, large power and steel plants and private
railways.

5. HEAVY MACHINE SHOP (HMS)
 This shop carries out the machining of cylinder block
(M.G. & B.G.) main base, saddler Main bearing caps,
Splines, Turbo Super, Charger, Lube Oil, Fuel Oil &
Water header) cam bearing housing.
 Planning, Milling, Drilling, Tapping, Boring Honing,
Serration milling etc. are some of the operations.

6. LOCO ASSEMBLY SHOP
 Component Fabrication
 Underframe Fabrication
 Bogie Manufacturing
 Locomotive Assembly

7. Side view of GM locomotives

8. LPS (LOCO PAINT SHOP)
 In loco paint shop, generally painting of locomotives is done after final
assembly .After painting, it goes to LTS (Loco Test Shop) for final
inspection & after which it is delivered to its destination.
 Working in LPS:Cleaning and masking inner & outer area of the engine
by compressed air& thinner.
 Cleaning, sanding, dusting by compressed air and primer painting by
Epoxy Zinc Phosphate on outer side of Loco.
 Doing H.R gray painting inside as well as applying Epoxy putty on outer
parts of Locos.
 Masking, sanding, dusting through compressed air and finish painting
inside driver’s cabin.
 Sanding, cleaning through compressed air and Epoxy Surfacer painting
on outer areas of Loco.
 Sanding, cleaning through compressed air and P.U finish painting (2
coating) of1st Border area and then masking & marking.

9.  Sanding, cleaning through compressed air and P.U finish
painting (2 coating) of2nd Border area and then masking &
marking.
 Sanding, cleaning through compressed air and P.U finish
painting of rest outer portion of Loco (single coating).
 Sanding, cleaning through compressed air and P.U finish
painting of rest outer portion of Loco (double coating).
 Sanding, cleaning through compressed air and P.U finish
painting of both bogies.
 De masking of both inner & outer areas of Loco.
 Pipe marking (colour coding) ,stencil work ,DV Hood ,net
painting, face setting & door lock painting ,touch up
painting & applying Decol.

10. Painting in LPS

11. SAS (SUB-ASSSEMBLY SHOP)
 SAS or Sub assembly shop of workshop is a place where
assembly of different parts are carried out. It mainly
concerns with the assembly of cylinder –piston
arrangement and all other necessary accessories that
are required for proper working of cylinder piston
arrangement.
 There are basically four assemblies which are carried
out in SAS shop. These are:

12.  Power Assembly
 Water pump Assembly
 Clutch drive Assembly
 Rocker arm Assembly
 Valve bridge Assembly
 OST Assembly

13. EES (ENGINE ERICCSION SHOP)
 In Engine Ericcsion Shop, the assembly of crankcase,
cylinder and other accessories & mountings are done.
 First of all, crank case is washed in crank case washer.
Then nut bolts and other accessories are mounted in it.
 Then crank shaft and oil pane are attached .
 Then camshaft and other mountings like OSTD,
Governor, Water pump, lube oil tank, Filter, Exhaust,
Turbo jet etc are mounted on engine.
 After full& final assembly of engine is done before it is
sent to ETS (Engine Test Shop) for final testing.

14. Diagrammetic representation of
Locomotive Engine

15. Real representation of GM locomotives

16. CTS (CENTRAL TRANSPORT SHOP)
 CTS or Central Transport Shop is a shop where
maintenance is done of vehicals used in entire DLW.
From the cars of officials to vehicals used in lifting
materials and material boxes .Examples are jumbo
trucks, fork lift truck.
 Fork lifter truck is a diesel run vehical which works on
hydraulic principle (Pascal law) to carry out lifting
function. It is mainly used for lifting material boxes
upto 2 tones. It is diesel operated vehical.

17. Fork Lifter

18.  Jumbo truck is a battery run vehical used for material
handling. It has a flat platform over its chasis to make
room for material to be carried.
Jumbo Truck

19. Thank You