2. This is sort of why steam locomotives needed about 8 hours of maintenance per day. Back when VHS tapes were "in", one of my favorite tape sets was restored railroad training films (ok, nerd pron, so what). One of which showed a lot of what went on behind the scenes in a locomotive maintenance facility - and why steam locomotives were limited to 8 hours of work per day: 8 hours driving, about 4 hours cooling down, 8 hours maintenance and about 4 hours of heating the water in the boiler. When diesel electric locomotives started becoming "a thing", some people said thing like "they're junk - the wheels fall off". Looking at why the wheels had such "bad" wear problems, it turns out that those locomotives were being driven 24/7, not 1/3 of the time like steam locomotives.
2. This is sort of why steam locomotives needed about 8 hours of maintenance per day. Back when VHS tapes were "in", one of my favorite tape sets was restored railroad training films (ok, nerd pron, so what). One of which showed a lot of what went on behind the scenes in a locomotive maintenance facility - and why steam locomotives were limited to 8 hours of work per day: 8 hours driving, about 4 hours cooling down, 8 hours maintenance and about 4 hours of heating the water in the boiler. When diesel electric locomotives started becoming "a thing", some people said thing like "they're junk - the wheels fall off". Looking at why the wheels had such "bad" wear problems, it turns out that those locomotives were being driven 24/7, not 1/3 of the time like steam locomotives.