If its in your ops manual you are permitted to do it. I've done
4 of them so far in my career (3 unplanned, 1 planned). The
procedure is as what Dani said.
If its NOT permitted in your Company's books then DON'T do
it, even though the manufacturer may have a procedure. You
will not only incur the wrath of the CP, but the Authority who
issued your licence will also want to know what the hell you
were doing as it'll be seen as a safety issue.