Hej Tomas!
Har tyvärr ingen aning, men välkommen... :welcome:
Have you tried to phone Dicken(Boulder Maskin)? or Importgaraget i Hjo?
What year is your truck?
I can send you a CD with FactoryServiceManual of a 2001, which contents the NV4500. I guess there is not that big difference between the years... but I´m a autoguy:bang so I may be wrong.
Where do you live?
try do a search in a couple of forums. I doubt that this hasn´t been discussed before.