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Maintenance Manual
Ensure that the cleanliness of the new hydraulic oil is within what is recommended; 20/18/15
according to ISO 4406-1999 (comparable to NAS 1638 or SAE AS 4059 class 9). If the cleanliness level
cannot be stated, or is not within what is recommended, use a 10μm mesh sized filter, to filter the oil
before filling it into the Steering Gear.
1.
Turn the selector switch on the motor controller to position
2 "STOP".
2.
Open the breathing filter [1] and fill oil into the oil tank.
3.
Open the venting plugs [2] on top of the rudder actuator as
illustrated.
4.
Start the pump units by turning the selector switch on the
motor controller to position 3 "LOCAL CONTROL"
5.
Fill oil into the rudder actuator by operating the handles on
the control valve manually for a few seconds.
6.
Pay attention to oil level in oil tank and repeat the procedure
until the rudder actuator is filled up with oil.
7.
Turn the selector switch on the motor controller to position 2
"STOP".
8.
Repeat the same procedure on the second pump unit.
9.
Oil level in oil tank to be within min and max.
10. Perform the venting procedure.
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Filling and Refilling of Oil
Note!
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