Hey, very random but hoping someone might know something about these old things! I've just acquired a '77 Ford tractor (think it's basically a 3600 underneath). I got it the night before last and managed to work the loader without issues and back it off the lorry (so far so good). I decided yesterday morning to use it to tow something out the shed but couldn't get the loader to lift at all. It's a Quickie loader that someone has kind of butchered on to the ASC valve. So, I just assumed it's probably low on oil. Went and bought the proper stuff for the rear axle this morning from the New Holland dealer. Went and checked the oil level and it was actually already showing as full. I figured it probably wouldn't hurt any to add a bit more so I turfed in an extra litre. This made no difference. So then I started loosening off pipe unions to see if I could kind of bleed it. I get nothing downstream from the ASC and get a little bit of ooozing (steady stream but not gushing) from anything upstream of it. Not really sure what to try now. I'm wondering if a check valve might be blocked or I'm just doing it wrong somehow. Tried all kinds of combinations which don't seem to do anything. The 3 point linkage doesn't seem to be doing anything either. Before I get into full on strip down mode is there anything else I should try? Is there any way of testing individual circuits without having pressure gauges etc? It's just weird that it was all working last week when I saw it and again on Thursday but ever since then nothing.... Cheers, Oli.