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2-5. Measurement of vibrator circuit pressure
1. Measurement
・
Hydraulic oil temperature: 50
±
5 °C
Position the machine on level surface.
Stop the engine and block the wheels.
SW352, TW352
1) Disconnect hose (1) at the high pressure
inlet port of the front vibrator motor. Fit
adapter
t.
★
TW352 has vibrating unit in the front drum
alone.
2) Install a 0-24.5 MPa (0-250 kgf/cm
2
)
pressure gauge to adapter
t.
3) Start the engine. Move the throttle lever to
the high idle position.
4) Operate the vibrator mode selector switch
from OFF to MANUAL mode ( ). Then
switch on the vibrator on-off switch located
on top of the F-R lever. Take the gauge
reading.
★
Use the similar procedures for the rear
vibrator motor.
2. Adjustment
If measured values fall outside the specified
range, adjust as follows:
1) Slacken locknut (3) of the relief valve.
Make adjustment by turning adjusting
screw (4).
・Clockwise rotation raises the pressure.
・Counterclockwise rotation lowers the
pressure.
★
Make the adjustment with the solenoid
energized.
2) When adjustment is complete, check to
make sure that the pressure has been
correctly set.
3) If the valve is beyond adjustment,
disassemble and clean or renew the relief
valve assembly.
Carefully perform disassembly and reassem-
bly
taking necessary means to avoid
engress of dust or other contaminations.
Inspection and Adjustment
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