Hyundai R 160 LC-3, Service Manual

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Preparation
Stop the engine.
Remove the top cover of the hydraulic
tank oil supply port with a wrench.
Push the pressure release button to
bleed air.
To measure the system relief pressure.
Install a connector and pressure gauge
assembly main pump gauge port, as
shown.
Start the engine and check for oil leakage
from the port.
Keep the hydraulic oil temperature at
50
Ź
5
Ş
C.
Measurement
Select the following switch positions.
Mode selector : H mode
Auto decel switch : OFF
Slowly operate each control lever of
boom, arm and bucket functions at full
stroke over relief and measure the
pressure.
In the swing function, place bucket
against an immovable object and
measure the relief pressure.
In the travel function, lock undercarriage
with an immovable object and measure
the relief pressure.
In the power boost function, pushing the
power boost switch at the top of right
control lever an immovable object and
measure the relief pressure.
Evaluation
(1)
ڸ
ڹ
ں
ڻ
ڼ
ڽ
(2)
ڸ
ş
ş
ڹ
ں
ڻ
ڼ
The average measured pressure should be within the following specifications.
Unit : kgf / cm 2
SYSTEM PRESSURE REGULATOR RELIEF SETTING 18)
(3)
Model
R160LC-3
Function to be tested
Boom, Arm, Bucket
Travel
Swing
Normal
320
Ź
10
350
Ź
10
260
Power boost
350
Ź
10
350
Ź
10
260
Overload
380
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