3-Point Hitch Engaging 3point hitch with FEL raised caused engine to get really rough/stall
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jim44
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I must say, I have never run into this problem. That being said, how do you operate the loader and 3PH at the same time? I don't think that I have ever had occasion to even think of this, much less try it. I have difficulty operating one at a time usually..........
I must say, I have never run into this problem. That being said, how do you operate the loader and 3PH at the same time? I don't think that I have ever had occasion to even think of this, much less try it. I have difficulty operating one at a time usually..........
Good point! I wouldn't do it either. It was a friend "trying things out" :thumbdown:
Gary Fowler
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I did that a lot when I was using my box blade to loosen up the dirt and FEL to scoop it up. I would be loading the dirt from the previous pass that was loosened with BB scarifiers with the FEL and dragging the box blade loosening up another pass and also dragging a load of dirt. When I got to where I was dumping, I pulled the 3 PH lever up then immediately raised the FEL to dump its load of dirt.
Lots of time when you may want to raise both at the same time and there shouldn't be a problem other than maybe a slower reaction time but certainly not a problem with stalling the engine. I think something is not plumbed right in the hydraulics if it is doing that. The hydraulic pump should not be enough to stall the engine before it goes into relief. As a matter of fact you shouldn't even hear a change in the engine as it goes to relief.
If it was my tractor, I would find another model on the dealers lot and see if it does the same thing and if not, make the dealer fix what ever is the problem. Even if other models do the same thing, that isn't right. The dealer set up mechanic might be doing something wrong when he sets up the FEL hydraulics.
Lots of time when you may want to raise both at the same time and there shouldn't be a problem other than maybe a slower reaction time but certainly not a problem with stalling the engine. I think something is not plumbed right in the hydraulics if it is doing that. The hydraulic pump should not be enough to stall the engine before it goes into relief. As a matter of fact you shouldn't even hear a change in the engine as it goes to relief.
If it was my tractor, I would find another model on the dealers lot and see if it does the same thing and if not, make the dealer fix what ever is the problem. Even if other models do the same thing, that isn't right. The dealer set up mechanic might be doing something wrong when he sets up the FEL hydraulics.
aczlan
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I'll have to disagree. The OP said that it was "just above idle" when this happened. I interpret that to be 1500ish RPMS The BX2200 has the D905 engine which makes under 12HP at 1600RPM (per: DieselEngineMotor.Com - Kubota Diesel Engine D905 ) If the hydraulic system was making 3GPM at 1850PSI, that takes 4HP, at least 1/3 of the available HP.
That will put a significant load on the engine and could stall it out.
Aaron Z
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Here are some facts you should know.
With all valves in series in an open center hyd system, the first valve has priority and that is only if it is using all the pumps flow.
When that valve is maxing out the pumps flow, the excess fluid in flowing over the relief valve to tank.
There is no fluid available for downstream use. No 3pt, no nothing.
When the valve is only using only half pump flow half that flow is available for downstream use.
Now, here comes the problem. When the 3pt is not maxing out the cyl, the hyd work normally.
When the 3pt maxes out the cyl, the flow is diverted over the relief valve to tank. Now, the fluid backs up into the FEL valve and causes problems. It could blow seals, and flow into the FEL cyl.
If the 3pt relief valve is set to say 2500 psi, this 2500 psi is now trying to work against the resistance from the valve flow and from the pump.
With all valves in series in an open center hyd system, the first valve has priority and that is only if it is using all the pumps flow.
When that valve is maxing out the pumps flow, the excess fluid in flowing over the relief valve to tank.
There is no fluid available for downstream use. No 3pt, no nothing.
When the valve is only using only half pump flow half that flow is available for downstream use.
Now, here comes the problem. When the 3pt is not maxing out the cyl, the hyd work normally.
When the 3pt maxes out the cyl, the flow is diverted over the relief valve to tank. Now, the fluid backs up into the FEL valve and causes problems. It could blow seals, and flow into the FEL cyl.
If the 3pt relief valve is set to say 2500 psi, this 2500 psi is now trying to work against the resistance from the valve flow and from the pump.
