3. INTRODUCTION
Diesel Shed Gonda was established in year 1982 with a small holding of
only 22 WDM1 locomotives. In the past 31 years,it has witnessed many
technological changes and has emerged one of the major diesel shed for
maintenance of BG locomotives.
As on date,Diesel Shed Gonda is homing 160 BG locomotives against the
berthing capacity of 130 locos . Diesel Shed is also extending technical
assistance to Chhapra Satellite Shed.
Diesel Shed Gonda is also maintaining 140 Ton Crane stabled at GKP.
4. Classification of locomotives
The Classification of Locomotives of Indian Railways consists of 3 alphabets
which indicate the specific charecteristics followed by numerical subscript
such as :
1 . The first letter denote the guage for which locomotive is designed .
W stands for WIDE GUAGE i.e Broad Guage
Y stands for METER GUAGE
N stands for NARROW GUAGE
2 . The second letter stands for the source of energy.
D for DIESEL TRACTION
A for AC TRACTION
3 . The third alphabet indicate the type of service the loco is designed for
P stands for PASSENGER SERVICE
G stands for GOODS SERVICE
CONTINUED ............
5. S stand for SHUNTING i.e the locomtive can be used for Shunting Purpose
only and cannot be used in the Main line .
The numerical digit indicates the HORSE POWER or MODIFICATION .
As a thumb rule Higher the digit higher the HORSE POWER
Sometimes these are alphabets in Subscripts
A alphabet indicates locomotives can work with both Vaccum and Air Brake
Coaches/Wagons
B alphabet indicates locomotives can work only with Air Brake Coaches
C alphabet indicates Fabricated Bogie
D alphabet indicates 3100/3300 HP locomotive or the Loco has both sides
Driving Cabin termed as “DUAL CAB”
6. IMPORTANT INNOVATIONS
• SFC Recorder
• Microcontroller Based Governer Test Stand
• Bogie Frame Manipulator
• Lube Oil Pump Gear Hydraulic Puller
• Gauge Comparator Unit
• Shock Pulse Meter
• Outboard Housing Bus Puller
7. SFC RECORDER
Computerized SFC Recorder is an important instrument for measuring
SFC of locomotives . SFC is an Important factor for calculating the
performance of locomotives which is based on temperature , correction
factor with altitudes and following parameters such as TG voltage and
Current and Engine Shaft Horse Power.
8. MICROCONTROLLER BASED GOVERNOR TEST STAND
MCBG is used to control the RPM of Diesel Engine.
Following main operation of the MCBG is checked on this test stand
• Dry Run testing with the help of dry run push button of the control
unit and to control the fuel rack movement in configuration mode as
per requirement with changing of parameters.
• Checking of auto callibration of actual unit as per configuration.
9. Bogie frame manipulator
Previously Bogie Frame and Linear Welding Work require for Bogie
Maintenance of Diesel Electric Loco was being done by Over Head
welding . This method was labour intensive and very time consuming
and it also effects the bogie frame welding . Now by using shed ’s
internal sources , Bogie Frame Manipulator has been prepared so
the work is done with lesser time and improved quality.
10. LUBE OIL PUMP GEAR HYDRAULIC PULLER
Previously Gear of Lube Oil Pump was removed by locally heating the
gear & with the help of locally made tool , in which more time and man
power were wasted . Now a days Hydraulic Puller is used for removing
the gear to save the man power & time.
11. GAUGE COMPARATOR UNIT
There was no any arrangement in Diesel Shed Gonda to check the
accuracy/calibration of Anolog gauge. Due to improper calibration
of gauge so many disputes occurred in loco during operations . To
avoid these troubles 1 Gauge Comprator Unit has been developed
Diesel Shed Gonda with its own limited resource. After developing
of this unit all gauges of loco are being successfully calibrated.
12. SHOCK PULSE METER
There was no any arrangement available in Diesel Shed Gonda for checking
of any internal defect of CE & PE roller bearings of T/M during overhauling
of the assembly.A Shock Pulse Meter is commissioned and is being used for
checking of health of roller bearings of T/M and giving positive result.
13. OUTBOARD HOUSING BUS PULLER
As per RDSO instruction bulletin an out board housing bush extractor (puller)
has been developed in Diesel Shed Gonda with its own limited resources . By
using this gadget Out Board Housing Bush is being easily changed in position
with less man power and in very short time period .
