Dual Tilt Dozer Help

vendredi 21 août 2015

Got one I haven't been able to answer.
Topic is a Dual tilt dozer set up on a D6D 4X6608-up with 44E15,300-up angle blade.
Here is the parts diagram and basic schematic.
Rod end of cylinders are tied together.
Question is how is the common line charged and maintained?
I suspect the spring loaded check valves and relief/makeup valves in the control valve (open center hydraulics) have something to do with it by I don't have any service manual information to verify how it works.
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Dual Tilt Dozer Help

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