Hyundai R 160 LC-3, Service Manual

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GROUP 4 POWER BOOST SYSTEM
Main control valve
Arm 1
Boom 2
Swing
LH travel
Arm 2
Bucket
Boom 1
Service
RH travel
Main relief
valve Power boost
solenoid valve
Engine speed
sensor
Main pump
Pilot pump
EPPR valve
Drive signal
Drive signal
P M
Engine
Fuel injection
pump
Accel
actuator
Power boost
button
LH control
lever
CPU controller
Motor drive signal Potentiometer signal Engine speed sensor signal
Mode switch signal
POWER MODE
H S L F
Power boost button signal
When the power boost switch on the left control lever knob is pushed ON, the maximum digging
power is increased by 10
$
.
When the power set is at H or S and the power boost function is activated, the power boost solenoid
valve pilot pressure raises the set pressure of the main relief valve to increase the digging power.
ş
ş
This function does not work at L and F.
Default
ť Power boost solenoid valve : OFF
Ɠ
Ɠ
Description
Power set
Main relief valve set pressure
Time of operation
H or S
320kgf/cm 2
-
H
350kgf/cm 2
Even when pressed continuously,
it is canceled after 8 sec.
OFF ON
Power boost switch