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5-56
EPPR VALVE CHECK PROCEDURE
Check electric current value at EPPR valve
Disconnect connector CN-75 from EPPR
valve.
Insert the adapter to CN-75 and install
multimeter as figure.
Start engine.
Set S-mode and cancel auto decel mode.
Position the multimodal dial at 10.
If rpm display show approx 1750
佳
50 rpm
check electric current at bucket circuit
relief position.
Check electric current at bucket circuit
relief position.
Check pressure at EPPR valve
Remove plug and connect pressure
gauge as figure.
余
Gauge capacity : 0 to 50 kgf/cm
2
(0 to 725 psi)
Start engine.
Set S-mode and cancel auto decel
mode.
Position the multimodal dial at 10.
If tachometer show approx 1750
佳
50
rpm check pressure at relief position of
bucket circuit by operating bucket control
lever.
If pressure is not correct, adjust it.
After adjust, test the machine.
Multimeter
CN-75
EPPR valve
Main pump
Adapter(P/no.:21Q6-50410)
Valve casing
Main pump
Pressure adjusting
screw locknut
Valve casing
CN-75
EPPR valve
Pilot pressure
supply line
刮
刯
到
刱
刲
刳
刴
Spec : 100~700 mA
Spec : 2~25 kgf/cm
2
(30~350 psi)
14095MS21
14095MS22
4)
(1)
刮
刯
到
刱
刲
刳
刴
(2)
Summary of Contents for HX140L
Page 12: ...SECTION 1 GENERAL SECTION 1 GENERAL Group 1 Safety Hints 1 1 Group 2 Specifications 1 10...
Page 209: ...4 5 MEMORANDUM...
Page 694: ...8 68 125LCR8TM30 Turn casing 1 upside down and remove oil seal 3 using jig 29...
Page 734: ...8 108 Assemble plug 2 Plug NPT1 16 11 EA 17 21078TM68 21078TM69 21078TM70 21078TM71...
Page 756: ...8 130 Remove lock nut 22 and then boot 23 14 36078RL14 2507ARL10...