Hyundai HX145 LCR, Manual

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5-58
EPPR VALVE CHECK PROCEDURE EPPR VALVE CHECK PROCEDURE
Check electric current value at EPPR Check electric current value at EPPR
valve
valve
Disconnect connector CN-133 from
EPPR valve.
Insert the adapter to CN-133 and install
multimeter as figure.
Start engine.
Set S-mode and cancel auto decel
mode.
If rpm display approx 1750
±
50 rpm
disconnect one wire harness from EPPR
valve.
Check electr ic current in case of
combined boom up and swing operation.
Check pressure at EPPR valve Check pressure at EPPR valve
Remove hose from A5 port and connect
pressure gauge as figure.
·
Gauge capacity : 0 to 50 kgf/cm
2
(0 to 725 psi)
Start engine.
Set S-mode and cancel auto decel
mode.
If rpm display approx 1750 ± 50 rpm
check pressure (In case of combined
boom up and swing operation).
If pressure is not correct, adjust it.
After adjust, test the machine.
Solenoid valve
Spec : 400~600 mA
(combined boom up and swing operation)
Boom priority
EPPR valve
CN-133
Multimeter
Adapter
(P/no.:21Q6-50410)
Block
Safety solenoid valve
A4
Solenoid valve
Boom priority
EPPR valve
Safety solenoid valve
Block
12~37 kgf/cm (170~530 psi)
(combined boom up and swing operation)
Pressure
gauge
145ZF5MS15
145ZF5MS16
①
②
③
④
⑤
⑥
2) 2)
(1) (1)
①
②
③
④
⑤
⑥
(2) (2)