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Farmall & IHC Tractors Discussion Forum
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Reply to 2500 or 574 help

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chadd

06-15-2007 23:10:05




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Thanks for all of the replys. I figured I would just post the answers to the questions in a new thread so everyone would see them.
Hugh:
The tractor has the optional factory external hydraulic pump for industrial use. It is rated at 18 gallons per minute. Also, the majority of the plumbing for the hydraulics is actually below the operators platform. the heat rises up through the console on the right side and the platform.
Janicholson:
I was wondering about the valve thing myself. There are several valves in the system, and a previous owner plumbed a set of remotes in for trailing implements. They are powered by the external loader pump as well. I have cleaned out the fuel system repeatedly and it hasn't helped. It has the shut off solenoid without a provision for a main jet adjustment. How do I richen it up?
Caterpillar guy:
The radiator and cooler were blown out with water and compressed air. It still ran 3/4 of the temp gauge, but it does plug back up fast, so you are probably right, it should be recleaned.
The tractor has an aftermarket set of control valves with two levers built in and they are not the IH ones. They are similar to ones used by most aftermarket loaders, but they have no provision for a float setting and even though there are 4 ports, only two appear to work (i.e I can't use two way implements) The filter that you are referring to has been changed every year. The haybine is a Gehl 880 PTO driven with a simple one way hydraulic cylinder for lifting it up.
Wolfman:
These levers are mounted behind the operator on top of the fuel tank. They don't seem to have a float setting, and all 18 gpm from the pump runs through them. The loader moves very quickly though, so I don't think that they are the restriction, although I could be very wrong. They are connected to the pump by braided rubber hose about 3 or 4 inches in diameter.

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Janicholson

06-16-2007 07:06:07




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 Re: Reply to 2500 or 574 help in reply to chadd, 06-15-2007 23:10:05  
The answer to hydraulic heating may be a combination of two things, In an open center system the return to resivoir valves/lines must be open causing zero pressure on the pump when all valves are in neutral, or float. If this is not the case it needs to be. A oil cooler with a fan if possible in the return line is also desirable. It needs to flow the 17 GPM of the pump.
The carb may need to be cleaned, If it is varnished up some the main jet can restrict flow. The float level is another possible lean causing issue if it is a bit low in the bowl. Measure carefully. The third is that if it still needs choke, the main jet may need to be replaced, or drilled out. (drilling is not the best solution as it is hit or miss, and the drill sizes are in number drills, not fractional, and tiny increments are all that is needed. Do not drill anything unless you have a second main jet to take it back to where it was. A CO HC meter hooked to the exhaust can assist in setting the fuel/air ratio. If it needs choke, it needs adjustment and will suffer low power and heating till fixed. JimN

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georgeky

06-16-2007 05:55:59




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 Re: Reply to 2500 or 574 help in reply to chadd, 06-15-2007 23:10:05  
I didn't reply to the first post because I didn't think I could help. I can tell you what I have seen with these, In 1980 dad bought a new 584 it has been a great tractor and doesn't get very hot on the operator. In 1981 he bought a new 484. This little tractor is a very good tractor, but will absolutely cook your brains. My uncle has a 574 that that would heat you up to, but he changed that underslung exhaust system to an upright and it cooled it off by 20 degrees for the operator. Keep in mind that none of these tractors run hot on the gauge. Anytime one of them is running hotter than normal it has been radiator problems. Dad had to recore the one on the 584 once, I forget what was wrong exactly, but it got to running hot and the recore fixed it. You may want to have that radiator checked out by a good repair shop. Hydraulic oil will get quite hot with lots of use. I am wondering why the need for all that extra plumbing and the other pump, these tractors have a good hydraulic system on them to start with. Hugh, in 1980 when dad bought the 584 it was parked right beside a 686 with wide front and canopy. I tried to get dad to buy it instead of the 584, he said he didn't need a tractor that big drinking up extra fuel. The 584 cost 10,900. Could have bought the 686 for 11,500. That was not a big difference considering the extra 15 HP of the 686. My 666 doesn't burn as much fuel as his 584 or mine. You are right about the design of these. Any Farmall tractor is 4 times as cool to operate, that is why I use so many of the old ones myself. I like riding above all that heat.

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Fromjb2

06-16-2007 05:37:00




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 Re: Reply to 2500 or 574 help in reply to chadd, 06-15-2007 23:10:05  
Hi Hugh, is correct about that series of tractor being not designed for North American temperatures.
My brother has a 684 Diesel and when doing heavy PTO work in the summer the transmission gets so hot you can't hold your hand on it, also the rad fan blows all the hot air back along the engine to the operator. I believe the hydraulic oil cooler should have a larger capacity for the North American climate.

Re external hydraulic setup, since this is an open center system, make sure there is a return line to the reservoir.

Re rad, on the Diesel models they clog up very fast because there appears to be 3 or more tubes in there and the air has no direct path for the dirt to be suck thru by the fan.

jimB

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Hugh MacKay

06-16-2007 09:08:53




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 Re: Reply to 2500 or 574 help in reply to Fromjb2, 06-16-2007 05:37:00  
Jim: None of these first tractors with cabs, even the Farmalls where you sat almost completely above the engine were great when something went wrong. Those first cabs were all add ons and heat rises.

I remember once the A/C quit on my 1066, hot July day and the tractor was demonstrating a Rockland Rotoveyor. Rockland rep said 200 hp min, thus the 1066 was warmed up a bit. Dust is a major factor on one of those, thus you don't open cab more than necessary. My operator wanted to impress upon me the importance of getting the A/C repaired, thus had a thermometer with him in the cab. When it hit 135 degrees F, he beckoned for my attention. The A/C got fixed the next day as these lads were running 24 hours per day.

I once remember a neighbor running a 484 open station. It was so hot he tried shorts. that transmission gave him a lot of leg burns.

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Hugh MacKay

06-16-2007 03:31:08




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 Re: Reply to 2500 or 574 help in reply to chadd, 06-15-2007 23:10:05  
chadd: First let me say I never believed your heat problem was any one specific item, but rather a combination of factors, most of them right in the tractor design. Europeans used this design in all makes, operator sitting low straddled the transmission and when the transmission became the hydraulic rerervoir it only made the problem worse. Bear in mind Europeans were not subject to the summer time heat we get across much of North America.

When IH started importing these tractors it was a cost factor, they supposedly were hp for a fraction of the cost of North American built tractors. I was buying new tractors when the 74-84 series came along. 574 and 584 were far less money than a comparable hp Farmall.

The design items you have against 74 and 84 series tractors especially your gasser. You have a 50 hp gas engine blowing all it's heat back, then you have that horizontal exhaust, an absolute nono with that much gas hp. The operator's platform is straddle the transmission and hydraulic reservoir. Then the platform is closed right off at the back by the fuel tank. There is hydraulic plumbing under that right control panell. Add to this a cab, and the whole design makes these a hot tractor, from an operator point of view. Even when everything is working perfect these are not a great enviornment. They funnel most the entire tractor heat right into the cab, and heat rises.

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