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  #1  
Old 05-06-2018, 07:45 AM
Mcamp Mcamp is offline
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Default 2072 trans trouble
I'm working on a 2072 that works great until you work it hard for awhile pulling cat 0 plow, it will lose hyd lift and power steering, the drive power is lower also. It has Hy-tran and a new NAPA filter no change. Could it have a bad pressure relief valve? After it sits and cools down everything works good. Any help is appreciated.

Thanks
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  #2  
Old 05-06-2018, 08:54 AM
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CubDieselFan CubDieselFan is offline
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How many hours are on the tractor?
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  #3  
Old 05-06-2018, 09:26 PM
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913 hrs, the tractor is very nice cond.
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  #4  
Old 05-06-2018, 09:38 PM
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Is the fan still on the driveshaft and is the pump clean on the outside so it can cool?
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  #5  
Old 05-07-2018, 12:37 AM
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Shrewcub Shrewcub is offline
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If it's clean and cool, and not whining excessively, I would be looking at the charge pump relief valve. Ignore the non-ported pump pic. The attached image shows the diagram for my thoughts due to your specific symptoms.
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File Type: jpg Screenshot_2018-05-07_00-05-22.jpg (26.8 KB, 280 views)
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  #6  
Old 05-07-2018, 09:41 PM
Mcamp Mcamp is offline
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Yes it is spotless clean and fan is there. No whining. I wondered about the relief valve but never have had one fail that's why I decided to ask for more input. Now to get time off work to dig into it.

Thanks
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  #7  
Old 06-18-2018, 10:27 PM
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Finally got to work on 2072 yesterday. I changed out relief valves with known good ones, and still have the same issues.
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  #8  
Old 06-19-2018, 12:26 AM
J-Mech J-Mech is offline
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Sounds like it is toast. Probably didn't get the oil and filter changed like it should have. Or someone towed it too fast.

Only way to know for sure is to do a pressure check on it when it's cold, and again when it's hot. Too bad there is no port to check drive pressure. But, if the charge pressure is low when it's hot, the charge pump may be bad. Could have a suction leak on the tube or at the charge pump also.

You said new hy-tran and Napa filter. Like IH hy-tran? Or did you just mean new oil? Which Napa filter? 1410, or that other one Napa likes to say is a good cross?
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  #9  
Old 06-21-2018, 09:50 PM
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IH hy-tran napa 1410 filter,i'll probably try changing the charge pump if no change then time to open it all up for a look.thanks
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  #10  
Old 07-15-2018, 07:24 AM
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I ended up swapping out the pump and everything works good.I'll tear into this pump when i'm off work this winter and have more time.Thanks for the input on my trouble.
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