Komatsu Galeo BR380JG-1E0 Shop Manual page 286

SEN02303-00
(9): Accessory valve
q
The solenoid selector valve drives
q
actuators of 3 kinds.
a Adjusting relief pressure (High pressure
setting side)
Primary conveyor motor
q
Conveyor elevator cylinder
q
The high relief pressure is the pressure
q
applied when the 2-stage relief valve is
turned OFF and the pilot pressure is not
applied to the selector port.
1] Disconnect 2-stage selector pilot
hose (14).
2] While fixing holder (15), loosen lock-
nut (16).
a If the holder is
turned to the right, the pres-
q
sure rises.
turned to the left, the pres-
q
sure lowers.
a Quantity of adjustment per turn
of holder:
Approx. 25.3 MPa {258 kg/cm
3
Locknut:
93 – 123 Nm {9.5 – 12.5 kgm}
3] Connect pilot hose (14).
28
4] After finishing
again that the oil pressure is normal
according to the above described
measurement procedure.
a If the high pressure setting side is
adjusted, the low pressure setting
side changes. Accordingly, adjust the
low pressure setting side, too.
a Adjusting relief pressure (Low pressure
setting side)
Lock cylinder (Extension and retrac-
q
tion)
The low relief pressure is the pressure
q
applied when the 2-stage relief valve is
turned ON and the pilot pressure is
applied to the selector port.
1] Disconnect 2-stage selector pilot
hose (14).
2] While fixing holder (17), loosen lock-
nut (18).
a If the holder is
}
2
a Quantity of adjustment per turn
3
30 Testing and adjusting
adjustment,
turned to the right, the pres-
q
sure rises.
turned to the left, the pres-
q
sure lowers.
of holder:
Approx. 25.3 MPa {258 kg/cm
Locknut:
78 – 93 Nm {8 – 9.5 kgm}
BR380JG-1E0
check
}
2