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1086 Low Pressure on Remote(s)

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addisonfarms
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PostPosted: Thu Oct 11, 2018 2:01 pm    Post subject: 1086 Low Pressure on Remote(s) Reply to specific post Reply with quote

In follow-up to my post earlier this week about the problem of not being able to lift the disc behind my 1086, the suggestions were to get a pressure reading and if possible a flow-rate. Couldn't get a flowmeter but did get the pressure gauge.

Both remote outlets only generate 1000psi @1900rpm.

Without having that flowrate determination, is this enough information to warrant checking pressure valve? My understanding that in its most basic sense, the pressure is a result of the resistance in the circuit (i.e. pressure valve). Since the reading is only 1000psi when it should be closer to 2000, it could indicate that the valve spring or other component has failed or gotten weak and providing enough resistance in order to get the pressure higher. All of that as opposed to low pressure = bad pump.

You guys helped me greatly getting this far, just looking for a little advice on whether or not to focus on the valve or go buy a pump.

Thanks.
 
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fastfarmall
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PostPosted: Thu Oct 11, 2018 2:27 pm    Post subject: Re: 1086 Low Pressure on Remote(s) Reply to specific post Reply with quote

I am no expert on hyd problems, but that sounds low,my M with the belly pump has got that much pressure, the super MTA with the live pump i can set that a lot higher, but then it push's a seal out in the pump !! One of the hyd guys will chime in!!
 
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Kevin Meier
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PostPosted: Thu Oct 11, 2018 3:28 pm    Post subject: Re: 1086 Low Pressure on Remote(s) Reply to specific post Reply with quote

If your brakes and other hydraulics are
working ok I would assume it's the pilot
relief valve located under the seat. You
can see it from the rear of the tractor. I
believe it should be a 2500 lb. valve.
 
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addisonfarms
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PostPosted: Thu Oct 11, 2018 5:27 pm    Post subject: Re: 1086 Low Pressure on Remote(s) Reply to specific post Reply with quote

CVPost-Kevin Meier wrote:
(quoted from post at 19:28:13 10/11/1Cool If your brakes and other hydraulics are
working ok I would assume it's the pilot
relief valve located under the seat. You
can see it from the rear of the tractor. I
believe it should be a 2500 lb. valve.


Looking at the parts catalog it breaks it down into two different versions - with draft control and without draft control. I have a draft control on my 3-point but on that diagram it is called a CUSHION RELIEF VALVE but on model without draft control its called PILOT RELIEF VALVE. I'm assuming you were referring to the cushion valve right?
 
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Kevin Meier
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PostPosted: Thu Oct 11, 2018 6:33 pm    Post subject: Re: 1086 Low Pressure on Remote(s) Reply to specific post Reply with quote

Pilot relief valve
 
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addisonfarms
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PostPosted: Thu Oct 11, 2018 6:52 pm    Post subject: Re: 1086 Low Pressure on Remote(s) Reply to specific post Reply with quote


Kevin, is this the correct valve?



 
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Kevin Meier
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PostPosted: Fri Oct 12, 2018 5:12 am    Post subject: Re: 1086 Low Pressure on Remote(s) Reply to specific post Reply with quote

#7 is the correct part
 
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addisonfarms
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PostPosted: Fri Oct 12, 2018 5:51 am    Post subject: Re: 1086 Low Pressure on Remote(s) Reply to specific post Reply with quote


Thanks for your help. I will get one ordered and let you know how it goes.

I'm curious, since this valve is located on the 3-point housing would it also affect pressure in the 3-point hitch?
 
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Kevin Meier
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PostPosted: Fri Oct 12, 2018 6:14 am    Post subject: Re: 1086 Low Pressure on Remote(s) Reply to specific post Reply with quote

Yes. The 3 point would be weak
 
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Kevin Meier
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PostPosted: Fri Oct 12, 2018 6:23 am    Post subject: Re: 1086 Low Pressure on Remote(s) Reply to specific post Reply with quote

If your 3 pont works I'd check elsewhere.
Maybe a filter or blown oring
 
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addisonfarms
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PostPosted: Fri Oct 12, 2018 7:29 am    Post subject: Re: 1086 Low Pressure on Remote(s) Reply to specific post Reply with quote


Well not sure if I'd describe it weak but it's slow to raise my JD7100 4-row planters. Once up it will hold them there even at idle. But raises them pretty slow. Didn't try shutting it off to see if it would hold them. When hooking remote to my haybine it will raise the cutterhead, but again slow - about same speed as 3-point lifts. Cylinder reaches end of stroke and you can't even tell the engine is lugging. But it will not raise my 13' set of JD 210 discs. Will go until wheels contact the ground and thats it. Other tractor will raise them so its not the cylinder.

That would still point to the pilot valve you mentioned wouldn't it?
 
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Kevin Meier
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PostPosted: Fri Oct 12, 2018 7:31 am    Post subject: Re: 1086 Low Pressure on Remote(s) Reply to specific post Reply with quote

Sure sounds like it
 
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addisonfarms
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PostPosted: Fri Oct 12, 2018 7:46 am    Post subject: Re: 1086 Low Pressure on Remote(s) Reply to specific post Reply with quote


Thanks for the quick response and advice. I will get one and replace it and report back.
 
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caterpillar guy
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PostPosted: Sat Oct 13, 2018 1:38 am    Post subject: Re: 1086 Low Pressure on Remote(s) Reply to specific post Reply with quote

If you want to check the flow put the gage on a tee. Then with a ball valve you can adjust the flow to build pressure. This will need some extra oil for the trans, and a couple of pails to catch the oil flowing out. The extra oil is to make up for the flow going out. Then with a timer you can measure the quantity and calculate volume.
Since the pressure is low I would suspect the pump. The reason is I have never needed to change or mes with the relief valve on any of the tractors here. That is with 06 56 66 series tractors All still in use here.
 
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addisonfarms
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PostPosted: Sat Oct 13, 2018 4:02 am    Post subject: Re: 1086 Low Pressure on Remote(s) Reply to specific post Reply with quote

CVPost-caterpillar guy wrote:
(quoted from post at 05:38:14 10/13/1Cool If you want to check the flow put the gage on a tee. Then with a ball valve you can adjust the flow to build pressure. This will need some extra oil for the trans, and a couple of pails to catch the oil flowing out. The extra oil is to make up for the flow going out. Then with a timer you can measure the quantity and calculate volume.
Since the pressure is low I would suspect the pump. The reason is I have never needed to change or mes with the relief valve on any of the tractors here. That is with 06 56 66 series tractors All still in use here.


Thanks for that workaround to the flowmeter caterpillar.
 
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