3pt. bogs & chatters on Ford 1510

[geezer32095]

OK finally got hydro sorted out & installed new (used) pump.. (I was having problems with intermittent 3pt hitch not working.) I am using a 30 inch 3pt scoop on a Ford 1510. 3pt has lots of power, goes up & down etc. However when it hits as high as it can go it bogs the engine down a few hundred rpms. (it IS the right pump) it did it from the first time I raised it after installing the new pump. . I put it up and down a few times to see if it would work out didn't seem to so I moved the upper limit stop on the control lever to stop it just before the bogging starts.

Used it quite a bit yesterday and several hrs again 2day. Noticed that when at the high limit I set there is a slight "chatter" vibration especially when loaded (the scoop) and just a little when empty so I move the lever down just a tad & it goes away..

Problem being, I am not getting all the lift now and the scoop doesn't quite tip straight down & sticky dirt doesn't all come out.. Any ideas/thoughts?? I could move the links in a hole & gain some hight but I am wondering why the bogging etc & if there is an adjustment or something..

 

[J_J]

You should have a relief valve in the 3pt circuit, and when you raise the lever and hold it there, the relief valve should go off at a set pressure and the pump is working real hard will put a heavy load on the engine and lower the rpm's until you move the lever back to neutral or the load is removed.

 

[geezer32095]

So you are saying the relief valve isn't relieving?? Is it damaging anything usibg it as I have it set?? There is a relief valve within a divirter manifold where a loader could be attached etc.

 

[J_J]

There should be a relief valve in any hyd circuit.

If it is not working, the pump pressure could damage some of the hyd components.

You should find out the tractor specs for the relief valve and use a 3000 psi hyd gage to check and set it.

I don't know where you have it set, do you know. The pressure is usually set at 50 to 100 psi below the pumps max psi rating.

Whoever designed the tractor, figured out all the specs for the tractor to work at a specific capacity, and in dealing with hyd, you are generally talking about load from the 3pt or loader, etc. Otherwise how much work can be accomplished with what. you have.

 

[Leejohn]

Your feed back is out of adjustment. Check your manual and see if you can find it in there. If not repost and someone can walk you thru the adjustment.

 

[geezer32095]

Thanks for the info.. nothing in the owner/operators manual no specs, just stuff like the lifting load etc. .. I didn't kno it could be set, what to set it at, should be factory set, but I am not the first owner either so who knows.. or how to do it anyway. I am not mechanicly inclined. (the new pump was just take off old one & bolt on new ) If necessary, I have an extra manifold/diverter block I can take to local Cat, or JD, or Kubota place. I would think they can find the correct settings.. There is no Ford dealer within reasonable distance.

I do have a friend that can follow the directions but we wont have a hydro gauge available.

 

[J_J]

You can build yourself a hyd gage test set for about $30.

This liquid filled gage and a short hose with a QD to match your tractor QD, or a gage and adapter into a female QD.

Mount a male QD in a tee in the IN port of the loader valve or wherever you want to measure.

3000 PSI 2.5" LF LM GAUGE

TSC might also have the gages.

 

[geezer32095]

Thanks J.J. BTW I am in St. Auggy 15 min from Ringpower. They may have it too. Now I need to find the setting.. We have a TSC also..

 

[geezer32095]

ok found the max pressure is 2,133 psi now how to adjust the relief valve to about 100 psi lower than that?? I will find a gauge tomorrow..

 

[J_J]

If the relief valve is adjustable, connect the gage and max the cyl until the relief presure shows, and then adjust it as needed,

If the relief is adjusted using shims, then you need the right shims to increase pressure. They come in different thickness for a certain amount of pressure.

 

[geezer32095]

Thanks to all.. All's well that ends well Checked the system out with the gauge and it's operating within the limits. The bogging was happening when my friend raised the operating lever above the point when the lift arms hit the top. Relief valve is holding @ 1800 psi. The max for the pump is 2,133, so all is well within limits and the scoop comes up with a full load even at low engine rpms. No need for adjustments but it was an education for me.

 

[Tx Jim]

Your feed back is out of adjustment. Check your manual and see if you can find it in there. If not repost and someone can walk you thru the adjustment.

I 2nd what Leejohn stated that feedback linkage(parts keys #27,28 & 29) needs adjustment. On tractors I've been around if feed back is "adjusted correctly" 3 pt won't raise far enough to cause valve to go into relief.

 

[geezer32095]

OK Tx Jim I didn't understand what L.J. was saying. Not familiar with all these little parts nor their adjustments. I will look at it tomorrow but I doubt I will kno if it is correct or not. I don't think linkage can go any higher or it would hit the bottom of the seat, it is very close now as I recall. Partly because I redesigned the location to be as far back as possible to get my knees out from under my chin. (and I am not that tall only 5ft 9in 180.) So you & L.J. are saying I don't want the relief to activate. The system should operate at 2,133? & it is raising too high now??

The one other thing I don't like about the tractor is that I can't easily get my size 10 boot between the fender & gear shift. I am thinking of removing some of the fender's leading bottom edge.

If I move the linkage to a position hole (there are 3) closer to the tractor it should lift a bit higher?? Will I lose some leverage that way??

 

[Tx Jim]

I'm not familiar with the feedback rod on your Ford but I am familiar with the feedback rod on my Kubota M7040. The FB rod on my Kubota required adjustment so as 3 pt hitch would raise to it's upper limit. One just sets turnbuckle on FB rod where relief valve is seated(not by-passing) when 3 pt is at upper limit and 3 pt control lever is at rear of the slot.

 

[geezer32095]

So the feed back is connected to a relief valve??? Hmmm it appears there is also one in the diverter/manafold block where the FEL would be hooked in if there was one. Is it likely there are 2?? I can't see one in the blown up view you posted.. Or what the FB rod is attached to either. I am not at all used to looking at these sort of views..

How does one know if the links are raising to their max? I think they are, they go up and stop with a definate "thump" before the raise/lower lever reaches its furthermost position possible in the bracket. At that time the engine starts to lug so I moved the upper limit stop to that point. Then it doesn't lug any more..

I found the feed back rod but I still don't understand its function or what to expect if I lengthen/shorten it etc.

I was told the relief valve will give a high pitch squeel when it goes off. I am not hearing that. When I had the pressure gauge hooked in, the pressure on start up did go to about 1800psi then drop 100psi
I can't be sure that the used pump is producing 2133psi either..

 

[Tx Jim]

On my kubota I moved 3 pt control lever rearward then with no implement on 3 pt lifted up on one 3 pt draft arm. It still had some rockshaft rotation so I adjusted feedback rod to just where I could hear relief valve then back feedback turnbuckle off 1/4 turn. 3pt raised to it's limit with no relief valve noise. Yes it would have been more scientific to install a hyd gauge on rockshaft control valve but my tractor has a cab in the way