Hyundai HX145LCR Manual page 315

EPPR VALVE CHECK PROCEDURE EPPR VALVE CHECK PROCEDURE
4) 4)
(1) (1)
Check electric current value at EPPR valve Check electric current value at EPPR valve
①
Disconnect connector CN-75 from
EPPR valve.
②
Insert the adapter to CN-75 and install
multimeter as figure.
③
Start engine.
④
Set S-mode and cancel auto decel
mode.
⑤
Position the accel dial at 10.
⑥
If rpm display show approx 1750 ± 50
rpm check electric current at bucket
circuit relief position.
⑦
Check electric current at bucket circuit
relief position.
(2) (2) Check pressure at EPPR valve Check pressure at EPPR valve
①
Remove plug and connect pressure
gauge as figure.
·Gauge capacity : 0 to 50 kgf/cm
②
Start engine.
③
Set S-mode and cancel auto decel
mode.
④
Position the accel dial at 10.
⑤
If tachometer show approx 1750 ± 50
rpm check pressure at relief position of
bucket circuit by operating bucket control
lever.
⑥
If pressure is not correct, adjust it.
⑦
After adjust, test the machine.
2
(0 to 725 psi)
5-56
Spec : 100~700 mA
Adapter(P/no.:21Q6-50410)
EPPR valve
Multimeter
CN-75
Main pump
Spec : 2~25 kgf/cm (30~350 psi)
2
Pressure adjusting
screw locknut
EPPR valve
CN-75
Valve casing
Main pump
Valve casing
145ZF5MS21
Pilot pressure
supply line
145ZF5MS22