Ramm...is it possible that the productive life of a loco might come down from 25-30 years to under twenty if the overhauling is not done as suggested or if the loco is pushed way beyond it's capacity even with proper,timely overhauling??? That's two scenarios i would like you to throw some light on.
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P.S - Appreciate your well structured answer and also in finding the markings at the front of the loco. :) Thanks.