Komatsu Galeo PC800-8 Shop Manual page 365

30 Testing and adjusting
Adjusting
1. Adjusting jet sensors of left 5-spool control
valve and right 4-spool control valve
a If the jet sensor output differential pressure
of the left 5-spool control valve or right 4-
spool control valve is abnormal, adjust jet
sensor relief valves (19) and (20) according
to the following procedure.
• (19): Jet sensor relief valve of left 5-spool
control valve
• (20): Jet sensor relief valve of right 4-spool
control valve
1) Fix adjustment screw (21) and loosen lock-
nut (22).
2) Turn adjustment screw (21) to adjust the
pressure.
a If the adjustment screw is
• turned to the right, the pressure ris-
es.
• turned to the left, the pressure low-
ers.
a Pressure changed by 1 turn of adjust-
ment screw: 0.288 MPa {2.94 kg/cm
3) Fix adjustment screw (21) and tighten lock-
3 Locknut: 59 – 78 Nm {6 – 8 kgm}
nut (22).
4) After finishing adjustment, check the oil
pressure again according to the above
described measurement procedure.
PC800, 850-8
}
2
SEN00788-02
17