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| I would say.... if it lifts like that on the three point, the main pump is fine. The problem is isolated to the remote circuit. The first thing I'd do is remove the pilot line(load sense) from either the remote or the priority pack and see if it runs oil FROM the remote when you activate one of the remote spools. If it doesn't you have a problem with one of the shuttle checks in the remote. If it does flow oil from the remote pilot line then you've got a problem with the relief spool in the priority pack. Neither issue is uncommon. I often removed the combining/sequencing valve from the left side of the priority pack, marked the set screw on the back of the valve, counted the turns out as I removed it... then drop the spring, retainer and ball from the valve and cleaned it. Reassemble and have it work. Given the hours you've probably got brakes disintegrating or something that is shedding a lot of crap into the oil and causing these problems. A lot of that stuff will bypass the filters one way or another. Also check that the filter screen is in front of the combining/sequencing valve. This valve combines the flow of the main and front pumps into the remote circuit as well as providing main system relief to the remote circuit and second pump.
One other quick check to see if the problem is a shuttle valve in the remote circuit.... dead head or activate all of the remotes simultaneously that way demand will come from all directions and not allow load sense pressure to bleed to sump past a bad shuttle valve back through a spool. If that makes it work you know you have a bad shuttle.... of which there will be one in each side of the remote stack as well as between stacks in the load sense line if the tractor has more than 2 pair of remotes.
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Ts110 hydraulic problems
