43
Installation, Operation and Maintenance Manual
MAN 564 Rev. 6
June 2020
Maintenance
Section 5: Maintenance
4)
Assemble the washer (44) onto the sealing washer (43).
5)
Screw the stop screw into the threaded hole of the end flange until it reaches its
original position (the same protrusion with reference to the flange surface).
6)
Check that the sealing washer (43) and the washer (44) are in contact with the
flange surface.
7)
Tighten the lock nut (25).
Reassemble:
1)
Assemble the new gasket (36) after cleaning the surfaces of housing (8) and head
flange (17), which are in contact.
2)
Assemble the head flange (17), replace the washers (37) if damaged, tighten the
screws (15) to the recommended torque.
3)
Lubricate the piston rod (20) surface, with a protective oil film and introduce it
into the head flange hole, taking care not to damage the O-ring (39). Carefully
clean the threaded end of the piston rod (20) and the threaded hole of the
adaptor bush (30) of guide block (14). Spreads some sealant LOCTITE 452,
or equivalent, on the rod threaded end and screw into the adaptor bush (30)
threaded hole and tighten.
4)
Carefully clean the inside of the tube (19) and check that the entire surface,
particularly that of the bevels, is not damaged. Lubricate the inside surface of the
tube and the bevels at the ends. Slide the tube onto the piston taking care not to
damage the piston O-ring (42) and the head flange O-ring (40).
5)
Assemble the end flange by centring it on the inside diameter of the tube, taking
care not to damage the O-ring (40).
6)
Assemble the washers (24) and the nuts (16) onto the tie rods (18). Tighten the
nuts to the recommended torque, alternating between opposite corners.
7)
Restore a generous coating of grease on the contact surfaces of the yoke (11) and
the bushing (33), on the yoke grooves, on the sliding block (5), on guide bar (9).
8)
Assemble the new gasket (10) after cleaning the surfaces of the housing (8)
and cover (1).
9)
Lubricate with protective oil the O-ring (32).
10)
Assemble the cover (1) and the screw (2). Tighten the screws to the
recommended torque.
11)
Carry out a few actuator operations to check that its movement is regular and
that there is no air leakage through the seals.
NOTICE
After maintenance operations carry out a few actuator operations (5 - 10) to check that
its movement is regular, that there is no air leakage through the seals and to eliminate
any oil residues in the air circuit, deriving from the lubrication of the seals during the
replacement phase.
