@Dave NYC Hudson PRR K4 posted:I don't know if the TMCC 1361 K4 has that issue(wouldn't expect it to be, but what do I know). .
This gearbox is strictly a Legacy design and appeared in 2011 in these first run k4s.
From there ,it found its way into the light and heavy mike's, northerns, mountains, consolidations,pacifics articulateds etc.
Its not used in the ESE hudsons or the j3a . It is not in the small 0-6-0s either.