Richter RA Series Actuators - Manual (Page 8)

Installation and Operating Manual
Series RA
9590-050-de Revision 01
TM 5515 MPE/Wm Seite 8 Edition 07/2003
4.5.1 Removal of the shaft
Remove the circlip and the sliding ring from the shaft.
Clip must not be over-stretched !
Press the shaft downwards
out of the casing
.
4.5.2 Installation of the shaft
Insert the shaft into the casing
from below. Take care here to
find the correct position of the
driving shaft and piston.
Insert the sliding ring and set the circlip over the shaft
with the appropriate tongs.
Check that the circlip sits correctly.
Clip must not be over-stretched !
With the single-acting actuator, insert the return
springs following the instructions laid down in Sec-
tion 4.6 and mount the end caps, taking care to ob-
serve the defined torque for the fastening screws,
see Section 1.2.
Take care to observe the correct position (marker UP
on the cap) and the state of the cap gasket ring.
4.5.3 Removal of the piston
Remove the end cap on the actua-
tor.
Remove the return springs (single-
acting actuators).
The actuator has fastened springs.
The removal of the springs is safer
compared to actuators with non-
fastened springs.
Press the piston out of the casing by rotating the
shaft (use a suitable tool). The pistons can be pulled
out by hand.
4.5.4 Assembling the piston
Place the piston in the casing.
Take care here that the piston
gear rack fits correctly onto the
teeth on the driving pinion, and
the pistons run together
symmetrically.
Insert the return springs follow-
ing the instructions in Section
4.6 , see table 1.
Replace the end cap onto the
actuator and screw in position,
taking care to observe the pre
scribed torque for the screws in
Section 1.2.
Take care to observe the correct
position (marker UP on the cap)
and the state of the cap gasket
ring.