Both the SD70MAC Operator's Manual (CSX Transportation - Road Numbers 700 thru 724), and the SD80MAC Operator's Manual (Conrail Quality - Road Numbers 4100 thru 4127) have a NOTE using the same words about Engine Blow Out: "While this practice is extremely detrimental to starting motor service life, it is possible, but not recommended to do this . . . . ."
It seems to me that if the cylinder test valves are open when cranking the engine, as is the case for engine blow out, the peak torque requirement for the starting motors would be much less than required for the routine engine purge cycle, and therefore less (?) detrimental to service life. What am I missing?
It seems to me that if the cylinder test valves are open when cranking the engine, as is the case for engine blow out, the peak torque requirement for the starting motors would be much less than required for the routine engine purge cycle, and therefore less (?) detrimental to service life. What am I missing?