‘64 4020D Syncro Hydraulics

By the “hitch valve” are you referring to the rear hydraulic hookups (where you’d connect hoses from implement)?
 
Thx Jim,

In light of my diagnostics thus far….any suggestions re: where you’d go next if it’s in your shop? Thx!
I suggest getting hyd oil up to operating temp then check each hyd operating valve with a laser thermometer noting which hyd control valve has the highest temperature. Control valve with highest temperature is probably causing hyd's to stop operating correctly.
 
By the “hitch valve” are you referring to the rear hydraulic hookups (where you’d connect hoses from implement)?
VuFBUXr.jpeg


Hitch valve area.
 

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