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#1
06-06-2016, 10:08 PM
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2084 Hydro Problem
I have a 2084 that slows down uphill. If I give it more forward lever it will speed back up. Loading up the power steering by moving the wheel all the way one way or the other also slows the speed slightly. forward/reverse lever is snug and stays in one spot. I also checked the trunnion and appears to be fine. springs are intact. Maybe they are weak? outer spring will move back and forth between the keepers but I was told this is normal? Could there be an internal problem? Pump seems fine I can spin the tires with ease. Any ideas? Thanks
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#3
06-06-2016, 10:30 PM
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Is this normal for a 2084? I've had other cub hydros that didn't do this. If this is normal then I would be happy.
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#5
06-07-2016, 09:04 AM
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The speed control lever is NOT cruise control.
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[B]Roland Bedell[/B] CC Models: 100, 105, 1450, 782, (2) 784, & 2072 [SIZE="4"][B][COLOR="Red"]Buy:[/COLOR][COLOR="Blue"] Made in the USA[/COLOR][/B] [/SIZE]:American Flag 1:
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#6
06-07-2016, 09:46 AM
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Quote:
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Terry O,100,72,102,123,104,124,105 125,129,149,1200,982 (2)2182s w/60in Habans 3225
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#7
06-07-2016, 10:29 AM
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Let me try to make this simple. The Cub hydro consists of a variable displacement hydraulic piston pump and a fixed displacement piston motor. At a set point the pump sends a given volume of oil to the motor. The motor because of clearances between the pistons and the cylinders that they fit in allow some of the oil to leak past the pistons. This is similar to blow by on an engine. Now lets assume that you are going down hill, the load imposed by the tractor against the motor is reduced so the amount of oil that leaks past the pistons is also reduced so you get an increase in ground speed. Now when you go up hill the load on the motor is increased causing more leakage past the pistons causing a reduction in ground speed. That's why you find yourself adjusting the speed control lever to maintain a given speed.
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2264 with 54 GT deck 1641 AKA Black Jack with a 402-E Haban Sickle bar mower JD317 dump truck BX2670 with FEL
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#8
06-07-2016, 01:07 PM
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Makes sense all. Thanks!
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