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Specifications subject to change without notice
Edition: August 2017
Maintenance EB 31a-01_EN
•
Mounting the position indicator
(see Fig. 31)
◦ Place the position indicator ( 19 ) on the shaft, making
sure that it is in the correct position.
◦ Tighten screw ( 24 ).
Fig. 31
The actuator assembly is now completed.
6.2
Third generation rack-and-pinion actuators
6.2.1
Actuator disassembly
Note:
Before disassembly, it is important to check
that the actuator is not pressurized and all
accessories (e.g. solenoid valves or limit switches)
have been removed.
Refer to the detailed drawing of actuator (Fig. 39).
•
Removing the cam or position indicator (if fitted)
(see Fig. 32)
◦ Open the spring clip ( 18 ) using a suitable pair of
pliers.
Note:
Make sure that the spring clip is not stretched too
far.
◦ Use a tool (e.g. screwdriver) to lift the cam up slightly.
•
O-ring replacement on angle adjusting screw OPEN
(see Fig. 33)
◦ Undo nut ( 12 ) using a socket wrench.
◦ Unthread the adjusting screw ( 10 ) and remove the
washer ( 11a ) and O-ring ( 11 ). This must be done on
both sides.
◦ After renewing the O-ring ( 11 ), slightly tighten the nut
(without locking) to tighten the adjusting screw with O-
ring and washer.
◦ The two adjusting screws are first to be locked
properly once the final assembly has been completed
and on adjusting the piston.
Fig. 32
Fig. 33
Fig. 34
•
Removing the end caps
(see Fig. 34)
◦ Unscrew the screws ( 13 ) in the sequence shown in
Fig. 34. For Type SRP (single-acting), remove the
compression springs ( 17 ) as well.
◦ Renew gasket ( 14 ).
