Komatsu ecot3 PC300LC-8 Shop Manual page 335

20 Standard value table
Discharge amount of hydraulic pump (P mode)
q Pump speed: At 1,950 rpm, PC current 280 mA
Test pump
discharge
Check point
pressure
(MPa {kg/cm
As desired
a As far as possible, bring pump discharge pressure P1 and P2 as close as possible to the average pres-
sure when measuring.
The error is large near the point where the graph curves, so avoid measuring at this point.
a When measuring with the pump mounted on the machine, if it is impossible to set the engine speed to
the specified speed with the fuel control dial, take the pump discharge amount and the engine speed at
the point of measurement, and use them as a base for calculating the pump discharge amount at the
specified speed.
PC300, 350-8
Discharge
pressure of
other pump
2
}) (MPa {kg/cm
P1 P2
Average
pressure
2 2
}) (MPa {kg/cm })
P1+P2
2
SEN02624-03
Standard value Judgement
for discharge standard lower
amount Q limit Q
(l/min) (l/min)
See graph See graph
9