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D13E/YDM4/"Anh Do"(Indian)
 Co-Co Diesel Electric


D13E001

Being an ALCO fan for a very long time, I really like these locomotives. These Indian built YDM4 locomotives are a typical example of ALCO based locomotives used around the world. They were built by DLW (Diesel Locomotive Works) at Varanasi in India, which is wholly owned by Indian Railways.They were delivered as two slightly different models, some painted blue and white  and some red and white.  The blue 716-725 appear to have an extra 'cover' along the top of the long hood. (see below). I am not aware of why this is so. Locomotives 716-25 are generally used in the North and 701-715 are mainly seen in the south. If you check the photos closely there appear to be detail differences between the two types as well. e.g. location of the side grilles, lack of curved cover between the bogies on the red version. One source says that they were delivered between 1984-85 and 2001-2002. 25 were delivered numbered 701-725 Some Indian records state that no YDM4's were manufactured after 1990 (or1993), so could the last 10 (delivered in 2002) be second hand? The DSVN machines have builders plates showing 2002 for the last 10, so maybe not. The Vietnamese machines have the 'raised' cab roof, similar to those exported to Tanzania, but not present on Indian locomotives. The first batch painted red and white matched passenger cars also imported from India at the same time. It has been suggested that the locomotives and coaches were part of an assistance package from India.

D13E002

buildersplate01
Above: Builders plate on 724 clearly showing December 2002 as the build date.

DATA

Class
D13E
No. in Class
25
Manufacturer
DLW (Diesel Locomotive Works) Varanasi, India
Model
DL535A/RSD30 or YDM4 depending on who you talk to...
Gauge
1000 mm
Wheel Arrangement
A-1-A A-1-A/Co Co (References differ- Indian references clearly state Co-Co)
Road Numbers
701-708 (1983-84) Red and White / Builders # I6026-301-308
709-715 (1984-85) Red and White / Builders # I6026-341-347
716-725 (2001-2002) Blue and White/ Builders # 573 - 582
Weight
72 tonne
Length
14475 mm
Height
3535 mm
Width
3000 mm
Max. Speed
100 kph
Axle Load
12 tonne
Min. Radius
75 metres
Engine
DLW ALCO 251D-6 6 cylinder, 4 stroke inline
Power
1350 hp
Starting Tractive Effort
18935 kg
Transmission
DC-DC
Fuel
3000 litres


ROAD NUMBERS

ROAD No.
Builder's No.
Year Built
Comments
D13E-701
I6026-301
1983
Red/White
D13E-702
I6026-302
1983
Red/White
D13E-703
I6026-303
1983
Red/White
D13E-704
I6026-304
1983
Red/White
D13E-705
I6026-305
1983
Red/White
D13E-706
I6026-306
1983
Red/White
D13E-707
I6026-307
1983
Red/White
D13E-708
I6026-308
1983
Red/White
D13E-709
I6026-341
1984
Red/White
D13E-710
I6026-342
1984
Red/White
D13E-711
I6026-343
1984
Red/White
D13E-712
I6026-344
1984
Red/White
D13E-713
I6026-345
1984
Red/White
D13E-714
I6026-346
1984
Red/White
D13E-715
I6026-347
1984
Red/White
D13E-716
573
2002
Blue/White
D13E-717
574
2002
Blue/White
D13E-718
575
2002
Blue/White
D13E-719
576
2002
Blue/White
D13E-720
577
2002
Blue/White
D13E-721
578
2002
Blue/White
D13E-722
579
2002
Blue/White
D13E-723
580
2002
Blue/White
D13E-724
581
2002
Blue/White
D13E-725
582
2002
Blue/White


Photo Gallery

Click on thumbnails for fullsize image

Type 1

D13Ethumb001D13Ethumb002D13Ethumb003

D13Ethumb004D13Ethumb005D13Ethumb006

D13Ethumb007D13Ethumb008D13Ethumb009

D13Ethumb010D13Ethumb011D13Ethumb012

D13Ethumb013D13Ethumb14D13E015

D13Ethumb016D13Ethumb017D13E018

D13Ethymb019D13Ethumb020D13E021

D13Ethumb022D13Ethumb023D13E024

D13E025D13Ethumb026D13Ethumb027

Type 2

Images of D13E 717

D13E_2_thumb001D13E_2_thumb002D13E_2_thumb003

D13E_2_thumb004D13E_2_thumb005D13E_2_thumb009

D13E_2_thumb007D13E_2_thumb008D13E_2_thumb009

D13E drawing

Above: Drawing of YDM4 - second version

Locomotive Classifications

Steam Locomotives generally used the traditional French classification system. A steam locomotive with a 2-8-2 wheel arrangement is classified as 141 class, a locomotive with  4-6-2 wheel arrangement is classified as 231 class etc. Pretty straight forward, except what they did  if  two classes had a 2-8-2 wheel arrangement I'm not sure. It didn't happen so wasn't a problem?

Diesel locomotives have a completely dfferent clasification system.

All diesel classes start with the letter 'D'  (for diesel?) then a number which I believe is related to the locomotives  power output. The third character defines  Electric' (E) or hydraulic  (H).

e.g. D5H class = Diesel + 500 hp + hydraulic.

Again, what happens if two classes are the same I don't know.

I am still investigating pre 1975 classifications. Some are the same e.g. 141 steam class, and some are different e.g. 'BB' class instead of D9E.

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Railways in Vietnam website 2009-2014 David Gurnett
  Updated March 2, 2014
All images remain the copyright of their original owners and are reproduced purely for the purposes of research.

Please feel free to contact me at railwaysofvietnam@gmail.com