Loader GPM and operating pressure

   / GPM and operating pressure #1  

farmboy238

Member
Joined
Mar 16, 2010
Messages
33
Location
Holly Springs, NC
Tractor
Kioti DK45se HST + JD 4066m
I have a DK45se Hst I would like to know what the operating hydraulic pressure is on this machine, also if I am reading my book right it says that the pump capacity is 63.9 gpm. Can that be correct? That seems to be a little much to me. Any help on this will be greatly appreciated.
 
   / GPM and operating pressure #3  
To amplify, the main pressure relief valve is supposed to be set at 2560 psi. Other relief valves (like on the loader) are usually set lower.

The hydraulic pump has two sections. The smaller section supports the power steering and some control functions (like PTO and 4WD clutches). The main hydraulic pump is rated at 9.62 GPM at 2600 RPM. The number you cite is probably liters/min. Flow at lower RPMs is proportionately lower.
 

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