hitachi ex200 manual control

this   is  the  pump    hitach  ex200   landy   excavater
this  pump   controll   by  two  high   speed   solenoid  valve   this   valve  controll  servo  piston  #9
this   servo  piston   controll   pump    presure   and   flow 
1)  how  to  manual  controll   pump

 
this  bolt  can    controll   servo  piston #9   it  can  change  pressure   of  the  pump 

   
(02)  control acceleration

         use   cabel

(3)  controll  travel   hi and  low   use  24v    controll   box  valve

you can now use this machinery and saved 10 k lol
not perfect but will work good in the pit I think