As this is a forum I thought I would ask and then if anyone searches on here for belts on a 939 they would find an answer .
When you say “belt service” do you mean an annual oil service with belts or a full desmo service? This gets confused a lot with the new schedules now. The belts are 5 years or 18k miles. The desmo doesn’t get done til 18k miles. There’s no time trigger.... they are two different jobs entirely. Standard time for belts (at 5 years) is about 1.5 hours on top of the annual service. I don’t have the info to hand but an annual and belts would be around 350 plus the vat.