Bern
Well-known Member
- Location
- Mount Vernon, WA
Some of you may have caught the conversation Sean and I were having regarding the 5000 hydraulic system, specifically with regards to the use of the "tapping manifold" meant to power items such as external loader valves, without tying up the tractor remotes.
Today I received the official instructions from NH regarding the use of their manifold. As I suspected all along, the tapping manifold gets its oil straight from the pump (you can clearly see this in the drawing), meaning the factory remotes and 3-point hitch are all "downstream" from the manifold. This necessitates the use of a "power beyond" valve that would then be plumbed into said manifold and the tractor rear axle using 3 different lines. The instructions make it clear, shown in yellow highlight, that a power beyond valve is to be used.
No doubt many have got away with using a standard valve in an application like this, however every time you lift something heavy with the 3-point hitch, or deadhead the tractor remote(s), you are subjecting the exhaust core of your loader valve to pressures it was never designed to see. This may or may not be a problem down the road depending on how often you use downstream functions, and to what kinds of pressures they might see. The higher the pressure, and the more often it is done, makes it more likely that the valve will leak.
Let me know if anyone needs further clarification on this.
Today I received the official instructions from NH regarding the use of their manifold. As I suspected all along, the tapping manifold gets its oil straight from the pump (you can clearly see this in the drawing), meaning the factory remotes and 3-point hitch are all "downstream" from the manifold. This necessitates the use of a "power beyond" valve that would then be plumbed into said manifold and the tractor rear axle using 3 different lines. The instructions make it clear, shown in yellow highlight, that a power beyond valve is to be used.
No doubt many have got away with using a standard valve in an application like this, however every time you lift something heavy with the 3-point hitch, or deadhead the tractor remote(s), you are subjecting the exhaust core of your loader valve to pressures it was never designed to see. This may or may not be a problem down the road depending on how often you use downstream functions, and to what kinds of pressures they might see. The higher the pressure, and the more often it is done, makes it more likely that the valve will leak.
Let me know if anyone needs further clarification on this.