2013 JD 4720 Hydraulic Pressure Relief

   #1  

jghop10

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Mar 22, 2021
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2
Tractor
JD 4720
Hello all,
I am looking to increase my hydraulic pressure on my 2013 JD 4720 because I checked the pressure and it was 2300 psi. The problem I have ran into is I cannot find the relief valve to do the adjustment I tried to use the picture provided in the technical manual (photo attached) however there was nothing there and the configuration is different. If anyone has any information on how to adjust this it would be greatly appreciated. Thank you.
8F4B539C-62A3-4ED9-8548-F257092AF7B0.jpeg
 
   #2  

Zebrafive

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Aug 5, 2010
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Location
South West MI
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John Deere 2030, John Deere 6415
Parts shows a relief valve on a two spool valve.
4720 2spoolvalve.JPG
 
  
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#3  
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jghop10

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Joined
Mar 22, 2021
Messages
2
Tractor
JD 4720
Thank you so much Zebrafive, I know exactly where that is located to. I wonder if tightening or loosening the nut on the exterior will adjust the pressure or if it needs shims. Thank you.
 
   #4  

Zebrafive

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Aug 5, 2010
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South West MI
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John Deere 2030, John Deere 6415
Just guessing............no shims, nut locks adjustment. Loosen nut, turn center shaft, tighten nut. Again this is a guess.
 
 
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