Thursday, July 21, 2016

Whats latest in Indian Locomotives

Silent Engines:

Code of federal practice 49, Pt 229.121a limits noise inside loco cab to 85 Db.

In 3 Phase its < 85 Db at present but in Conventional its near or > 90 Db.

RDSO Modification sheet # 448 issued in this regard. 

Reliable Traction Motor Support :

RDSO Modification sheet # 447 Rev 0 issued in this regard. 

RDSO SMI No. 0269, Rev. 1

12 mm safety sling IS : 2266 Garde 1770.

1810 mm for TM 3 and 4

1510 mm long for TM 1, 2,5 and 6

Sling has D shackles on both sides. as per IS : 2415-2004 Grade 8


Standardisation of safety sling for compressors:

For 3 phase locos

RDSO SMI No. 0242, Rev. 1 issued.

8mm dia wire rope. as per IS 2762-2004 grade 1770


High reach panto: 




WBL -85


  • Can be fitted even in WAP4 ( due to DBR problem) with base as 1900 mm
  • Air bellow operated
  • Less no. of components.
  • fit for 200 kmph
  • Has Auto Droppping Device
  • Has over-reach detection device.
  • 2030 mm panto pan ( 230 mm extra )
Better CCB ( computerised control break ):

To prevent following failures:


  • Air leak from BPCB valve
  • Air leak from unloader valve
  • Breakage of AFI guage glass


To overcome:

  • Provide Wire Mesh Filter
  • Dirt collecter at CCB panel
  • BP pressure at ze
  • ro before attachment, 5 Kg after BP FP coupling.
  • Improving rubber seating quality by VITON
  • AFI glass thicness increasefrom 8 mm to 12 mm



Better bearing maintenance:


  • Follow FIFA strictly
  • Fix assembly component ij  kit form
  • Measuring radial clearance as per SMI-278
  • Induction heatng of seating of MSU bearing.
  • Adequate stock of TM and MSU bearing and grease.
  • Temp controller and demagnatising feature in induction heater.
  • Color matching of pinion as per SMI-278


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