Your explanation is great! I understand the linkage type, in France it's called parallelogram, I didn't know it's called "self-leveling". What I still do not understand is why there's a relief valve only on the left side.
EDIT: Correct me if I'm wrong. Since the two sides are set in parallel...
Thank you, ptsg! the regen function makes sense to me, but why would there be a relief valve on a single cylinder? Could you explain what you mean by self-leveling?
thanks for all of you responding. here's some photos. you can see the three HYDAC units with three connections as well as the single other valve with four connections.
1. I don't know what tractor it comes from but the tractor connection is designed for Zetor. So I assume it was a zetor, and by the size of it, something around 70-80hp.
2. T indeed means Tee. These are just fittings. I marked them so I have an easy time looking at the system with the diagram...
I bought a front loader (used) for my Zetor 7245. I am trying to understand how it functions as the system is not straightforward. There are four valves, three of one type and a fourth that's different, that I would like to understand what they are for. I drew a (crude) schematics based on...