Posted by Jon f mn on July 10, 2019 at 19:11:06 from (174.219.19.121):
Working on my swather and the hydraulic are giving me fits. Everything worked good before I changed the drive belts. To change the belts I had to remove the pump from the drive to pass the belt through. I did not open the hydraulic anywhere, just pulled it off and layed it down. Now I have very low pressure, just enough to raise the header and real at full throttle, but I get nothing from the variable speed valve. As I said, everything worked good before. Here is a pic of the valves.
I pulled the lines near the pump and have oil flowing there. In the pic the pressure line is in the upper left, the rubber line you can just see. The u shaped line from the left to right valve is pressure to the second valve. The return is the right line on the left valve that is T'd from the right valve. The far left steel lines that are T'd are the header lift. The right rubber line in that valve is the variable speed line. The right valve is the real lift, the rubber line dropping down and left is that feed.
So where could the problem be? I don't know what the pressure is, I'll have to get a pipe fitting to hook up my Gage. It will lift the header and real at full throttle, but not at idle. I'm stumped since everything worked before.
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