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Fit the cam (1) in the desired position in reference to the top
and bottom position of the shaft, as well as the direction of
rotation of the actuator, see Figure 3-6.
Figure 3-8:
Cam position
Fit the internal thrust bearing (8).
Insert the shaft (30) completely.
Fit the external thrust bearing (8).
Fit the thrust washer (10) and spring clip (18) using pliers.
Info
Information for actuators manufactured after 2006
With this actuator version, the adjusting screws (2) are fi t from
the inside in the actuator housing, see Figure 3-17. This assembly
must be performed before piston and end cap assembly.
Carry out Chapter "3.14.5 Assembly of the adjusting screws,
actuator version after 2006" before Chapter "3.14.2 Cam
assembly" and Chapter "3.14.3 End cap assembly".
3.14.2 Cam assembly
(see Figure 3-3, Figure 3-7, Figure 3-8, Figure 3-9, Figure 3-10
and Figure 3-11)
Figure 3-9:
Shaft end
EB 31a_EN
December 2022 edition
Subject to technical changes
Assembling the piston o-ring (16)
Fit the piston bearing (5) and piston bearing (15).
Grease the bearing surface of the piston (25) in the housing
(29) and the piston teeth.
Either clamp the top end of the shaft in a vice or hold the
shaft end stationary with the corresponding counterpart and
place the housing (29) in a horizontal position, see Fig-
ure 3-7.
Figure 3-10:
Cam position
The cam (1) is located in the correct position, see Figure 3-8.
For the standard direction of rotation (clockwise to close),
turn the housing (29) 40° to 45° counterclockwise, view from
below.
From the view from the top, turn clockwise, depending on
how the shaft is held, see Figure 3-9.
Figure 3-11:
Assembling the pistons - housing rotation angle
Press both pistons (25) into the housing (29) at the same time
until the pistons are engaged and turn the housing clockwise
or counterclockwise until the travel end is reached, see Fig-
ure 3-9 and Figure 3-10.
Figure 3-12:
Assembling the pistons
Design and principle of operation
3-5
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