Hyundai r35z-7 Workshop Manual page 39

(14) When the motor has reached the operation speed, check the operation while applying the load to
the actuator.
(15) Check the monitoring or measuring instrument if installed.
(16) Check the noise level.
(17) Check the oil level in the tank. Supply the oil. If required.
(18) Check the setting of the pressure control valve while applying the load to the actuator.
(19) Check the parts for any leakage.
(20) Stop the motor.
(21) Retighten all the bolts and plugs even when they have proved to by free from Leakage.
(Be sure to remove the pressure from the circuit before retightening.)
(22) Check the oil level in the tank.
(23) Check if the pump and actuator function correctly.
(24) Irregular operation of the actuator indicates that an air is left still in the circuit. When the air is
bleeded completely from the circuit, all the parts operates smoothly without any irregular
movement and there is no bubble in the oil of the tank.
(25) Check the oil temperature.
(26) Stop the motor.
(27) Check the filter if the element is fouled.
(28) If the element is heavily fouled, carry out flashing in the circuit.
To prevent damage to the pump, be sure to observe the following cautions during the operation
which may allow entry of the actuator, hydraulic oil change, etc :
After oil supply, fill the pump housing with the hydraulic oil.
(1)
Start the pump with the speed of 1000 rpm or less and take care not to allow the oil level to lower
(2)
below the specified level of the oil level gauge.
When bleeding an air from the hydraulic circuit, keep the motor speed at 1000 rpm or less.
(3)
Operate each actuator for three or more cycles and carry out idling for 5 minutes or more.
8. MAINTENANCE
The maintenance of this hydraulic pump is limited mainly to the tank, in particular, the hydraulic oil
change.
Since the maintenance interval varies depending on respective operation and use conditions, the
cautions described below for the users should be for reference only.
Checking the filter
(1)
Every day for the initial period after start up.
Once a week when the operation becomes stable.
Once a month when the operation hours exceed about 100 hours.
When any part of the hydraulic system is changed (e.g., assembling of an additional part, change and
repair of the piping), check the filter newly as in the case of startup.
( ( 2) C C hanging the filter
After startup
After 500 hours of operation
Every 500 hours of operation after that, and each time the hydraulic oil is changed or the failure
occurs. If any abnormal fouling of the filter is observed during daily check up to the first filter
change after startup, find out the cause.
In this case, do not extend the check and filter change intervals to 500 hours.
The paper filter can not be cleaned. Change the filter as a whole.
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