Thinking of a potential diorama in 1/35th scale.
Question is - did world war two vintage steam engines require periodic major maintenance, and how often? Looking for a reason to show an armored loco with some of the armor removed to show the engine underneath and possibly some parts like major access covers to inside the engine itself removed with a somewhat grungy looking crew cleaning the boiler or what ever. It seems large boilers in buildings run for a long time between major cleanings - like the whole winter - but trains may present another situation.
Any refenence works?
Thanks in advance,
Val Kraut