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Hydro Issue


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#1 BairleaFarm OFFLINE  

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Posted April 10, 2013 - 09:50 PM


The 1650. This was run for a few hours last year with 80w-90 and parked. I flushed and changed the filter. I run napas case hydro fluid. Hytrac maybe?

I know very little about hydros. It goes slow up hill and fast down hill. It won't raise the plow while in motion. If the plow gets stuck the hydro whines. I would think with no wheel weights and empty tires the tires would spin.

What could be the problem?

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#2 KennyP ONLINE  

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Posted April 11, 2013 - 05:10 AM

I'm no expert on Hydros. But I saw something in your other thread about the trunnion by IHCubGuy. That can cause a lot of issues on these. If I can find some info on it I will post it here. It is part of the linkage.

As far as the lift not working when moving, you may still have some of that 80-90W in the cylinder. If it cool out, that won't move very fast.

 

Edit: found this on the fluids.

TransLubChart.jpg


Edited by KennyP, April 11, 2013 - 05:16 AM.
Added pic

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#3 BairleaFarm OFFLINE  

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Posted April 11, 2013 - 05:13 AM

I'm going to read the manual and find out about the truin. It's been 80 and I ran the lift for a hour plus the random times I've had it running. I would think all the gear oil would be out.

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#4 KennyP ONLINE  

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Posted April 11, 2013 - 05:39 AM

I found this and made it into a PDF for the folks needing it.

Yeah, the fluid should have changed out by now. Maybe some others have ideas to help you along on that issue. I wonder if there is a pressure relief that has failed so you have no pressure build up?


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#5 olcowhand ONLINE  

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Posted April 11, 2013 - 08:18 AM

With the lift not working right, it sounds like either a relief valve stuck open/worn, or relief spring broken, or possibly an air leak allowing air into the system.  There should be 2 regulating relief valves....one for the hydro supply, another for the lift circuit.  If worse comes to worse, ship the entire hydro unit to me & I'll check it out.  I think it'll fit in a large flat rate box & just cost a bit under $16 each way.


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#6 BairleaFarm OFFLINE  

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Posted April 11, 2013 - 08:33 AM

Thanks... I've Parked it in the barn. I need a little break. My current rush is to get the allis tiller mounted on the st10 after I figure the fuel/hunt issue out.

I wonder if I could put a pressure gauge somewhere in the system?

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#7 olcowhand ONLINE  

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Posted April 11, 2013 - 08:36 AM

The manuals show how/where to place gauges to check the charge pump, but not the hydro pump itself.  If the charge pump isn't putting enough volume/pressure out, then the hydro can't perform.



#8 BairleaFarm OFFLINE  

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Posted April 18, 2013 - 06:12 PM

I mowed with it today. Other than the hydro it mows well. It has a hydraulic filter. After a little over a hour of mowing the lines and bottom of the differential were so hot I couldn't hold my hand on it.

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#9 HowardsMF155 OFFLINE  

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Posted April 18, 2013 - 06:57 PM

I mowed with it today. Other than the hydro it mows well. It has a hydraulic filter. After a little over a hour of mowing the lines and bottom of the differential were so hot I couldn't hold my hand on it.

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You may want to read this discussion here about hydros.  Some VERY knowledgeable people were contributing.

http://gardentractor...run-your-hydro/

 

One post states that it does get hot, and it would be better to test with an infrared type gauge not your hands.



#10 EricFromPa ONLINE  

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Posted April 18, 2013 - 11:17 PM

You may have a collapsed line going to your lift cylinder.It won't be obvious just to look at them when they are installed on the tractor but they do have a metal core.If one were to have been Kinked or crushed shut it would cause the problem that your seeing.It doesn't take but a couple minutes to take both lines off once you have the fuel tank out of the way.






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