Hi WbainGo visit The International M-100 Group and look at the 6.3 forum. The air suspension system is the same as yours, 600 too. There is a lot of good information in there.
One thing to do is drain the air tank under the front left fender. Push up on the drain valve at the bottom. Be careful, the water is oily and squirts out all over the place.
Please post some pics of this beauty.
thanks for the info,did empty the resovoir but still will not rise.
i alse tried the other site and have picked up some interesting stuff,thanks for that.
i will keep looking and see if any of the other forums will help.
i will put on some pics when i have a bit of time or will get kids to do it as they are better at that kind of thing