I-Tork PDS Pneumatic Actuator
Installation and operating manual (PDS-M0108/1010)
I-TORK PDS PNEUMATIC ACTUATOR
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automatically and pull out the pistons (3).
5)
Loosen the Set Screw (27) of Scotch - Yoke (5).
6)
Take the Snap Ring (21)/Washer (12)/Thrust Washer (11) out from the top of
shaft.
7)
Separate the shaft (4) from the body.
8)
Replace the part.
9)
For Assembly: Do the Reverse.
Converting PD to PS Actuators:
All I-Tork PD (Double Acting) actuators can be converted to PS (Single Acting)
actuators by adding a spring pack as follows.
Caution: Vent all compressed air from the actuator and disconnect all
electrical power before dismantling.
If ‘Fail Open’ position is required:
All parts are the same except for the addition of the spring pack; just the PD cover
needs to be replaced with the appropriate PS spring pack.
If ‘Fail Closed’ position is required:
1. Loosen the Adjusting Screws (23) from the body.
2. Disassemble the End Covers (2).
3. Disassemble the Pistons (3) according to PD disassembly.
4. Rotate the Pistons (3) and Yoke (5) 180°; then assemble the pistons to the body.
5. Mount Spring Pack to the body when the pistons (3) are in their inner most
position.
