Sakai SV201-1, Shop Manual

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9-054
TROUBLESHOOTING
3-3. Vibrator System
If a problem occurs in the vibrator systems such as the vibrator pump, vibrator motor and vibrator solenoid valve,
determine the cause and carry out action as required, according to the following general troubleshooting items.
(NOTICE)
When checking whether or not the pressure is correct, refer to the pressure standard value for each
hydraulic circuit.
3-3-1. No vibration
Check point Cause Check/Action
1. Oil Level of
Hydraulic Oil Tank
Oil level in hydraulic oil tank is low. Fill tank until correct oil level is obtained.
2. Suction Filter for
Vibrator Pump
Vibrator pump flow is reduced due to
clogged filler.
Clean suction filter or replace it if necessary.
3. Vibrator Solenoid
Valve
Vibrator pump cannot discharge oil because
spool of vibrator solenoid valve does not
shift.
Repair vibrator solenoid valve or replace it if
necessary.
4. Vibrator Motor Internal leakage of vibrator motor. Measure drain quantity from vibrator motor.
If drain quantity is larger than standard
value, repair vibrator motor or replace it if
necessary.
•
•
Output torque is not transmitted due to worn
spline of vibrator motor output shaft.
Replace vibrator motor.
5. Vibrator Pump Insufficient discharge rate from vibrator
pump due to reduced efficiency of vibrator
pump.
Measure discharge flow rate of vibrator
pump with flow meter.
If discharge flow rate is not within specified
range, repair vibrator pump or replace it if
necessary.
•
•
Insufficient pump discharge due to wear of
vibrator pump drive shaft spline.
Replace vibrator pump.
•