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Hydraulic Experts Reply Here

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IaGary

03-16-2006 05:20:27




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I run a hydraulic motor powered sprayer with my 79 1086. ( old style pump )
After 3 or 4 hrs. the hydraulics get a little hot and the booms are slow to lift with the cylinders.
Not a big issue on speed but am I doing damage to the hyd pump on tractor?
Can I plum this differant or do something to keep the oil cooler?




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Bob M

03-16-2006 06:52:49




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 Re: Hydraulic Experts Reply Here in reply to IaGary, 03-16-2006 05:20:27  
I'm now hydraulic expert! However the outfit where I moonlight occasionally operates a Case/ASS(?) 16 row planter. It utilizes both the tractor hydraulics to fold/unfold and operate the marker arms, and has it's own independent PTO pump-driven hydraulic system to operate the other planter functions.

The independent system includes a large (close to 2 ft square) air-cooled oil cooler mounted on the planter tongue. An electric (or hydraulic? - I cannot recall) fan forces air through the hyd cooler.

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Anyway I submit if your tractor hydraulics losing power after running a while the system is being overheated. Sooner or later this will damage seals, and may cause the oil to breakdown and thus shorten life of the pump. So either an auxiliary oil cooler or else separate PTO hyd pump (with cooler) are indicated.

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the tractor vet

03-16-2006 06:29:37




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 Re: Hydraulic Experts Reply Here in reply to IaGary, 03-16-2006 05:20:27  
You are sayen that your running this sprayer on the open center system correct?? and this 1086 must be under the a 79or80 model somewhere around there they went to the PFC system . So just how hot is the oil getting over 180also ya may want to check and make sure that you do not have a restriction on the oil cooleror that the oil cooler itself is not blocked with chaff in the finns . We are running a bale wrapper on my 806 like none stop all day and she will get the oil up to around 160-170 . Dusty is sorta hard on it when he is wrappen you know how youg guys are got to hurry hurry , now when we would try and run it on the one 1950 she would heat the oil up in 10 to 15 bales . ya may want to run it on a flow rater and see just what the pump is putting out free flow and then again at 1250 then againat 2000 the pressure releif should be kicking out around 2350 . At the 1250 check it should be doing atleast 10.5 gpm.

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Janicholson

03-16-2006 06:19:07




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 Re: Hydraulic Experts Reply Here in reply to IaGary, 03-16-2006 05:20:27  
If there are now hoses running to the motor or cylinders for several yards, replace them with finned piping from steam baseboard heaters. The surface area might just keep things cool. use pipe rated for the pressure! This tactic will keep from making ugli on the tractor.
JimN



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Nat 2

03-16-2006 05:44:26




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 Re: Hydraulic Experts Reply Here in reply to IaGary, 03-16-2006 05:20:27  
The internal hydraulics weren't designed to run a hydraulic motor for long periods of time like that. You should really have a dedicated PTO-driven pump to run the motor.



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gene bender

03-16-2006 05:37:32




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 Re: Hydraulic Experts Reply Here in reply to IaGary, 03-16-2006 05:20:27  
Why dont you put a tranny cooler in the return line and get electric fan from junt yard and also add a temp guage this can be mounted on the sprayer rig anyplace out of the way. Also can add a resivour on the sprayer for more oil capacity.



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genep

03-16-2006 06:11:46




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 Re: Hydraulic Experts Reply Here in reply to gene bender, 03-16-2006 05:37:32  
The oil cooler is a good idea, just be sure it is rated to handle the flow of the motor or you will create a restriction and make more heat.



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