Man LE140C?

Hi I have a 2002 MAN LE140C horsebox and I am about to give it a major service. I know it has never had the gearbox and differential oils changed, and I wish to do this as 1st to 2nd gear is stiff when cold. Does anyone know what kind of oil belong in each casing and roughly how much. The work is not the problem just the type and quantities.

Much appreciated