Komatsu PC500LC-10R Shop Manual page 494

TEST OUTLET PRESSURE OF SOLENOID VALVE
(4) Swing parking brake solenoid valve operation table
Work equipment signal and swing signal (work equipment
including services)
(5) Travel speed increase solenoid valve operation table
When overheat 2nd setting is applied
Engine speed
Travel speed switch at Lo
Travel speed switch at Mi, Hi
Other than the above conditions
(6) Travel junction solenoid valve operation table
When travel steering signal is conducted
When travel steering signal is not
conducted
(7) Swing 2-stage relief solenoid valve operation table
When boom
raise signal is
When swing sig-
conducted
nal is conducted
except the oper-
ation of changing
swing direction
When the pump flow is divided
Other than the above conditions
30-88
Operating condition of solenoid valve
Operating condition of solenoid valve
When travel signal is not conducted
When travel signal is
conducted
Operating condition of solenoid valve
When travel single sig-
nal is conducted
Other than the above conditions
Operating condition of solenoid valve
Boom RISE PPC
pressure is Max.
2
2.2 MPa {22 kg/cm
All OFF
When any of these is ON
Max. 1200 rpm
F pump pressure or R pump pressure
is Min. 32.3 MPa {330 kg/cm
F pump pressure or R pump pressure
is Max. 18.6 MPa {190 kg/cm
F pump pressure or R pump pressure
is Min. 34.3 MPa {350 kg/cm
F pump pressure is
raising and Min.
20.6 MPa
}
When arm sig-
{210 kg/cm
nal is not con-
F pump pressure is
ducted
lowering and Min.
25.5 MPa
{260 kg/cm
30 TESTING AND ADJUSTING
Operating
state of sole-
noid valve
OFF (de-ener-
gized)
ON (ener-
gized)
Operating
state of sole-
noid valve
OFF (de-ener-
gized)
2
}
ON (ener-
2
}
gized)
Operating
state of sole-
noid valve
ON (ener-
gized)
2
}
OFF (de-ener-
gized)
Operating
state of sole-
noid valve
2
}
ON (ener-
gized)
2
} Min.
OFF (de-ener-
gized)
PC500LC-10R