28
March 2022
Installation, Operation and Maintenance Manual
MAN 707 Rev. 3
Section 5: Maintenance
Maintenance
Reassembly
1.
Assemble the head flange (31, Figure 22) with the assembly piston and
cylinder tube.
2.
Lubricate the upper and lower piston rod (1-2, Figure 22) surfaces with a
protective oil or grease film and introduce it into the head flange hole, taking care
not to damage the O-ring (3). Carefully clean the threaded end of the piston rod
(1-2, Figure 22) and the threaded hole of the head flange. Spread some sealant
LOCTITE 452, or equivalent, on the rod threaded end and tighten.
3.
Carefully clean the inside of the tube (11) and check that the entire surface,
particularly that of the bevels, is not damaged. Lubricate the tube internal surface
and the bevels at the ends with a protective oil or grease film. Slide the tube onto
the piston taking care not to damage the Teflon seal ring (10); the tube bevel has
to smoothly compress the seal ring; take care also not to damage the head flange
O-ring (17-29, Figure 22).
4.
Assemble the end flange by centering it on the inside diameter of the tube, taking
care not to damage the O-ring .
5.
Screw the fixing screws (32, Figure 22). Tighten the screws, alternating between
opposite corners.
NOTICE
Carry out a few operations (Section 3) to check that there are no leakages from
the gaskets.
