December 2020
Installation, Operation and Maintenance Manual
MAN 606 Rev. 5
Maintenance
33
Section 5: Maintenance
Reassemble:
1.
Assemble the new gasket (37-39) after cleaning the surfaces of housing (8), the
flange (38) and head flange (42), which are in contact.
2.
Assemble the head flange (42), replace the washers if damaged, tighten the
screws (31) to the recommended torque.
3.
Lubricate the piston rod (17) 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 (17) and the threaded hole of the adaptor bush
(30) of guide block (14). Spread some sealant LOCTITE 452, or equivalent, on the
rod threaded end and tighten.
4.
Carefully clean the inside of the tube (21) and check that the entire surface,
particularly that of the bevels, is not damaged. Lubricate with a protective oil
film the tube internal surface and the bevels at the ends. Slide the tube onto the
piston taking care not to damaged the Teflon seal ring (46): the tube bevel has to
smoothly compress the seal ring; take care also not to damage the head flange
O-ring (43).
5.
Assemble the end flange by centring it on the inside diameter of the tube, taking
care not to damage the O-ring (43).
6.
Assemble the nuts (25) 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 bushings (33), on the yoke grooves, on the sliding blocks (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 or grease the O-ring (32).
10.
Assemble the cover (1) and the screws (2). Tighten the screws to the
recommended torque.
11.
Screw the stop screw (20) by turning it clockwise with an Allen wrench until
it reaches its original position (the same distance with reference to the end
flange surface).
12.
Screw the stop-setting screw cover (23) into the cylinder end flange.
NOTICE
After maintenance operations carry out a few actuator operations to check that its
movement is regular and that there is no oil leakage through the seals.
