DeZurik POWERRAC R1 Gebrauchsanweisung - Seite 11

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DeZurik POWERRAC R1 Gebrauchsanweisung
Spring-Return Cylinder Disassembly

Spring-Return Cylinder Reassembly

Clean and inspect all parts before reassembly. Refer to Figure 6 for component identification. See
Figure 1 for orientation of cylinder assembly and end cover on spring-to-open and spring-to-close
actuator configurations.
1. Replace worn parts, especially sealing components such as O-rings, other seals, and the
cylinder tube.
2. Lubricate O-rings, other seals, and the cylinder tube walls.
3. With the O-ring and groove toward the piston rod, place the O-ring (S14), the piston (S7), and
the nut (S10) on the piston rod (S4).
4. Tighten the nut to 45 ± 5 foot pounds (61 ± 7 Nm).
5. Place the O-ring (S8) in the smaller groove of the piston (S7). Place the piston seal (S9) in the
larger groove of the piston as far around the circumference as possible without stretching the
seal. Angle the remaining portion of the seal, and carefully slip it over the edge of the piston and
into the groove.
November 2020
(Continued)
Figure 6—Cylinder Assembly
Page 11
DeZURIK
D10389