Komatsu PC500LC-10R Shop Manual page 476

TEST AND ADJUST OIL PRESSURE IN WORK EQUIPMENT, SWING,
AND TRAVEL CIRCUITS
3.
Remove the oil pressure pickup plugs (PFC) and (PRC).
(PFC): Front pump discharge pressure pickup port
(PRC): Rear pump discharge pressure pickup port
4.
Install the nipple C in the hydraulic tester A to the position
where the oil pressure pickup plugs (PFC) and (PRC) were
removed.
5.
Connect the gauge A1 of hydraulic tester A to the nipple C.
REMARK
Gauge in the digital hydraulic tester B can also be used in-
stead of the gauge A1.
6.
Start the engine.
7.
Insert the pin E and the plate F between the sprocket and
track frame to securely lock the track.
8.
Select and display "Pre-defined Monitoring" (01/11) by re-
ferring to "SET AND OPERATE MACHINE MONITOR".
9.
Adjust the hydraulic oil temperature so that it is within the
specified range.
10. Set the working mode to P ("Power Mode").
11. Turn the fuel control dial to MAX (High idle) position.
12. Measure the Pump Pressure by operating the travel lever
and the pedal and then relieve 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.
Remove the testing tools and restore the machine after the test is finished.
30-70
30 TESTING AND ADJUSTING
PC500LC-10R