Komatsu PC500LC-10R Shop Manual page 429

30 TESTING AND ADJUSTING
REMARK
If the swing lock switch is turned on, the main relief valve is set for high-pressure relief.
12. Turn the fuel control dial to MAX (High idle) position.
13. Test the boost pressure when the oil pressure is relieved in arm IN circuit + one-touch power maximizing is
ON by operating the work equipment control lever.
For standard values, see the "Gauge pressure" in STANDARD VALUE TABLE, "STANDARD VALUE TABLE
FOR ENGINE".
REMARK
• "Charge Pressure" on the monitoring is displayed in absolute value.
• The absolute pressure includes the atmospheric pressure. Check the atmospheric pressure because it
changes with altitude.
• The relationship between the absolute pressure and the gauge pressure is as follows.
Gauge pressure = Absolute pressure - Ambient pressure
Remove the testing tools and restore the machine after the test is finished.
3
Boost pressure pickup plug (1):
2.0±3.9 Nm {0.2±0.4 kgm}
2
Boost pressure pickup plug (1):
Liquid adhesive (LS-2)
PC500LC-10R
TEST BOOST PRESSURE
30-23