I have a friend with a 190 allis that they asked me to fix for them. The problem is that the tractor will not go when placed in gear. The most you get out of it is what I would call a hydraulic oil drag, meaning that you get a slow 1-2 inch roll in any gear and that is it. Near as I can tell the main clutch is not slipping and that is has something to do with the hydraulic power director. I have read that the PD can be a problem with these tractors but that is about all I know. I do not have a manual but my friend is supposedly getting one for me, but have not seen it yet. A little back ground on the tractor is that they bought it on the neighbor's estate sale, could not get it to start as the fuel system was all gummed up from old fuel, so they towed it a mile to their place (it may or may not have been in gear when pulled, there is some finger pointing going on). They got it running and there it sits. Until I get my hands on a manual I am at a loss. Any help would be appreciated.