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JD 301 industrial loader tractor Overheating

Have a JD 301 industrial loader tractor w/ shuttle. Gas powered.
Am having overheating issues. Thermostat replaced, no help.
thermostat removed, no help.
Same tractor will not climb any sort of slight grade in 7th or 8th gear. Matter of fact it won't pull itself in 8th on level roadway.
Help

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  • danny herget
    danny herget Jul 17, 2010

    Have you tried replaceing the hydraulic and transmission filters?It sounds like the hyraulics are restricted and putting too much load on the engine.Also the water pump may be causing some of your problems,does the tractor work well when it is cool or the same cool as hot?

  • rdt4691 Jul 17, 2010

    Hydro filter replaced, Removed thermostat and tried that, Cool or warm, air temp doesn't seem to matter???

  • rdt4691 Jul 18, 2010

    Thanks for the info wiseguy212. The thermostat has been eliminated as the issue. Oil and coolant ok, no white smoke. I am leaning toward something amiss in the hydrolic system. Since it labors in the higher gears.
    Had it ideling just a few minutes ago, Trans in 4th High / Lo range selector in "P" shuttle in N. within 10 minutes, temp was at 220. Going to try the same test, but put everything in neutral positions. If i'm not mistaken, this should eliminate any loading by the hydro system. And we shall see what happens.

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You may need to do a compression test on the engine to confirm whether or not the head-gasket needs to be replaced,that's where i would start if the thermostat is not the problem and the hydraulics are not loading up.Check for oil in the radiator or anti-freeze in the oil as well as for white smoke out of the exhaust,all are indicators of a bad head-gasket.

Posted on Jul 18, 2010

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