1. Removal of the main control valve assembly
1 Reduce the workfinder to the ground and stop the engine.
2 Modern excavator operating the joystick and the pedal to the hydraulic line pressure line.
3 Slowly loose air breathing apparatus on the fuel tank for unloading attention to prevent sputtering of residual liquid burns skin due to pressure.
When the piping and hose are disconnected, the oil in the tube flows out, and the oil flowing out is placed in the container.
4 Remove the bolt and disconnect the tube.
5 Disconnect the pilot hose.
6 Disconnect the servo hose
7 Lift the control valve assembly and remove the mounting bolt on the control valve
8 Remove the control valve assembly. Check if all hoses have been disconnected when the control valve assembly is removed.
2. Installation of the main control valve assembly
1 Install in the order in which the removal is reversed.
2 discharge air from the cylinder (arms, arms, bucket), rotary motor and walking motor
