crank oneself up

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Hi. I have to translate a text about Apollo 13 and I came across this phrase which I don't really understand, so any kind of help you can offer, either an explanation or a translation would help.

Kranz, a buzz-cut ex-fighter pilot would crank himself up for a challenging day at work by playing "Stars and Stripes Forever" in his head.

I think it might mean something like "Kranz (...) se daba ánimos en un día difícil de trabajo repitiendo la tonada de Stars and Stripes Forever"
  • sacnils

    Senior Member
    English - Yorkshire, England

    Yes I think you've got the idea, except that I understood from the text that the "cranking up" took place before his day at work, more in the sense of "he prepared himself for".
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