Komatsu PC500LC-10R Shop Manual page 475

30 TESTING AND ADJUSTING
3.
Select "Pre-defined Monitoring" (04/11) or "Monitoring Se-
lection Menu" and display the following monitoring items
by referring to "SET AND OPERATE MACHINE MONI-
TOR".
Monitoring code: 01100 "Front Pump Pressure"
Monitoring code: 01101 "Rear Pump Pressure"
Monitoring code: 04401 "Hydraulic Oil Temperature"
4.
Adjust the hydraulic oil temperature so that it is within the
specified range.
5.
Set the working mode to P ("Power Mode").
6.
Turn the fuel control dial to MAX (High idle) position.
7.
Measure the "Front Pump Pressure" and "Rear Pump Pressure" by operating the travel lever and the pedal
to relieve the oil pressure in the travel circuit.
k
Be sure to perform correct lever operation by using clear hand signals and checking. Otherwise
wrong lever operation can be a cause of an accident.
k
Before operating the travel lever and the pedal, check the sprocket position locked with pin and
locked direction of the travel again.
REMARK
The machine monitor displays the pressure when the main relief valve is relieved. The travel circuit is al-
ways relieved at high pressure.
See STANDARD VALUE TABLE, "STANDARD VALUE TABLE FOR MACHINE" for standard values.
METHOD FOR TESTING TRAVEL RELIEF PRESSURE BY TESTING TOOLS
1.
Release the remaining pressure by referring to "RELEASE REMAINING PRESSURE FROM HYDRAULIC
SYSTEM".
2.
Open the cover on the left side of the machine.
PC500LC-10R
TEST AND ADJUST OIL PRESSURE IN WORK EQUIPMENT, SWING,
AND TRAVEL CIRCUITS
30-69