Komatsu PC400LC-5 Operation & Maintenance Manual page 78

11. EXPLANATION OF COMPONENTS
11.16.1
METHOD OF RELEASING PRESSURE IN
1.
2.
3.
4.
CONTROL CIRCUIT ON MACHINE
EQUIPPED WITH ACCUMULATOR
Place the work equipment on the ground. Close the crusher
attachment jaws, etc.
Stop the engine.
Move the safety lock lever to the free position. Move the work
equipment control lever and the attachment control pedal to full
stroke back and forth, right and left so as to release the pressure
in the control circuit.
Move the safety lock lever to the lock position. Lock the control
lever and attachment control pedal. The pressure, however, will
not be completely released, so when the accumulator is re-
moved in the control circuit, gradually loosen the screws. Never
stand in the oil ejection direction.
2-34