Hello from Norway - with a slightly different Chevy

[FiretruckOfTheNorth]

Hello, folks! My name is Harald, I live in Norway and own this set of wheels:





It's a 1974 Pronto fire appliance, made by Hämmerli of Switzerland. The body is coachbuilt, but the frame and running gear however is a K20 truck, with the 4.8l inline six. The frame is lengthened a bit at the very front. The cab-over steering is provided by what I think is a steering column from a Chevy van from the same area.

Being built on a very common vehicle, parts are cheap and easily available, provided I'm able to figure out what those parts really are!

I'm hoping I can pick your brains to figure out a thing our two, as the old gal needs some maintenance from time to time.