December 2020
Installation, Operation and Maintenance Manual
MAN 606 Rev. 5
Maintenance
Maximum level
Minimum level
29
Section 5: Maintenance
5.1.1
Check and Restore Oil Level in the Hydraulic Control Unit
Operate the distributor lever to “closing manual operation”.
Figure 27
Move the actuator into his “fail to close” position.
Unscrew the dipstick (1).
Check that the oil level into the tank (4) is in correspondence of the “MAX LEVEL” notch of
the dipstick.
Screw and tighten the dipstick.
If necessary substitute or added the oil, proceeding as follow:
•
Remove the dipstick (1) from the tank cover (22).
•
Unscrew the plug (27) and the washer (9) to drain all the oil.
•
If some dirt or/and sludge is found in the oil drained from the tank, before filling
with new oil in the tank, disassemble the oil tank tube, by unscrewing the two cap
nuts (2), and clean the internal surfaces of the tank. If necessary substitute the
gaskets (21) of the tank.
•
Replace the plug (27) and the washer (9) into the plate (11) and tighten.
•
Pour the new oil into the tank through the dipstick hole (1) on the cover (22).
•
Replace the dipstick (1).
•
Add oil (refer to Table 12) if in the tank the oil level is BELOW THE MINIMUM
(Figure 26) until to reach the optimal (MAXIMUM) oil level.
•
Operate the distributor lever to “Remote” position.
Figure 26
Level measuring stick
