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5-50
GROUP 14 EPPR VALVE
COMPOSITION
EPPR (Electro Proportional Pressure Reducing) valve consists of electro magnet and spool valve
installed at main pump.
Electro magnet valve
Receive electric current from MCU and move the spool proportionally according to the specific
amount of electric current value.
Spool valve
Is the two way direction control valve for pilot pressure to reduce main pump flow.
When the electro magnet valve is activated, pilot pressure enters into flow regulator of main pump.
Pressure and electric current value for each mode
1)
HOW TO SWITCH THE POWER SHIFT (STANDARD
↔
OPTION) ON THE CLUSTER
You can switch the EPPR valve pressure set by selecting the power shift (standard
↔
option).
Management
·
Service menu
-
Power shift (standard/option) : Power shift pressure can be set by option menu.
·
290F3CD149
290F3CD126
290F3CD150
290F3CD151
Enter the password
(1)
(2)
(3)
2)
1. PUMP EPPR VALVE
Mode
Pressure
Electric current
(mA)
Engine rpm
(at accel dial 10)
kgf/cm
2
psi
Standard
P
8
114
290
±
30
1850
±
50
S
10
±
3
142
±
40
330
±
30
1750
±
50
E
12
±
3
171
±
40
360
±
30
1650
±
50
Option
P
0
0
160
±
30
2100
±
50
S
5
±
3
73
±
40
250
±
30
2000
±
50
E
10
±
3
142
±
40
330
±
30
1750
±
50
Summary of Contents for HX130 LCR
Page 11: ...1 1 SECTION 1 GENERAL Group 1 Safety Hints 1 1 Group 2 Specifications 1 10 ...
Page 174: ...4 5 MEMORANDUM HYUNDAI HEAVY INDUSTRIES CO LTD CONSTRUCTION EQUIPMENT DIV ...
Page 536: ...8 108 125LCR8TM30 Turn casing 1 upside down and remove oil seal 3 using jig 29 ...
Page 566: ...8 138 Remove lock nut 22 and then boot 23 14 36078RL14 2507ARL10 ...