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Sluggish Rearend On Hills 317

jd 317

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9 replies to this topic

#1 fishman OFFLINE  

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Posted August 01, 2012 - 05:09 PM

Got the 317 running good but on hill or just starting out I have to push the hydro lever all the way forward. Already changed fluid & filter didn't seem to help. Any ideas?

#2 ncb OFFLINE  

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Posted August 01, 2012 - 06:15 PM

not that familiar with the guts and operation of the hydros yet but a number of these guys are into the wizard/guru catagory,tudor comes to mind,but i may suggest you might be in need of a good pressure guage and fittings shortly ,good luck with it.hopefully one of the resident brainiacs brainiac.jpg will show up shortly and help get you fixed up

Edited by rexknightly, August 01, 2012 - 06:41 PM.


#3 middleageddeere OFFLINE  

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Posted August 01, 2012 - 06:28 PM

I would start with the easiest, check the hydro engage knob. It is in between your legs when sitting and is for, if you want to push it around...if partially engaged this could be the problem. Try messing with that first. If not, I would guess your pump is going.

#4 JDBrian OFFLINE  

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Posted August 01, 2012 - 07:00 PM

Another thing to check is the driveshaft from the engine to the hydro unit. At the hydro end it can wear and cause it to slip. The other thing is the control linkage. It's a real contraption and there could be a problem somewhere. The valves that are activated by the control knob mentioned above could be sticking as well and not fully closing off the bypass. The hydro units themselves are very rugged and last a long time unless abused.

#5 MH81 ONLINE  

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Posted August 01, 2012 - 07:34 PM

Just a question from a non-JD literate person... What oil goes in the Hydro on this? I know oil choice in a machine can make a real difference...

#6 Trav1s OFFLINE  

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Posted August 01, 2012 - 07:42 PM

Type F ATF or JD low visc HyGuard are the choices. I went with the Type F and new filter when i got my 120 ready for work.

To get back to the original post... My best guess is that there is slop in the linkage.
  • MH81 said thank you

#7 fishman OFFLINE  

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Posted August 01, 2012 - 08:10 PM

Thanks will check on everything. I know I have a little play in drive shaft but it's pinned so I can't see it slipping. I think the check valves might be problem because when checking it I can move tractor without turning knob down, not easy but can. I know on my 312 it will not move at all unless dump valve used.

#8 fishman OFFLINE  

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Posted August 05, 2012 - 10:51 AM

Switched rearend from my 312 to the 317 fixed the problem.

#9 Texas Deere and Horse OFFLINE  

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Posted August 05, 2012 - 12:23 PM

I would take apart and clean the dump valve before putting the 317 trans axle back into the 312.

#10 fishman OFFLINE  

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Posted August 05, 2012 - 07:08 PM

Yes going to check it out but the whole housing is spider webbed with cracks some dry but a few wet. So I'm thinking the pump might be junk. Not to worried about 312 motor blown in it so got time to work at it.





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