Komatsu Galeo BR380JG-1E0 Shop Manual page 292

SEN02303-00
2) Install nipple M2 and connect them to oil
pressure gauge [1] of hydraulic tester M1.
a Use the oil pressure gauges of 58.8
MPa {600 kg/cm
34
2
}.
3) Start the engine.
4) While running the engine at high idle,
measure the pump discharge pressure
and LS valve output pressure (servo pis-
ton inlet pressure) simultaneously under
the condition in the following table.
a Measuring condition and method of
judgment: If the pressures are in the
following ratio, the LS valve is normal.
Measured oil
pressure
Pump discharge
pressure
LS valve output
pressure
5) After finishing measurement, remove the
measuring tools and return the removed
parts.
2. Measuring LS differential pressure
a Measure the pump discharge pressure
and LS pressure (actuator load pressure)
simultaneously and calculate the differ-
ence between them.
1) Remove oil pressure pickup plugs (1), (2),
(3), and (4).
(1): Front pump discharge pressure
q
pickup plug
(2): Rear pump discharge pressure
q
pickup plug
30 Testing and adjusting
Ratio of oil
Condition
pressures
All work
All work equip-
equipment
ment switches
switches ON
OFF
(No load)
1
Almost same
Approx. 0.6
(Approx. 3/5)
BR380JG-1E0