Emerson Hytork XL Series - Page 4

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Table of Contents
November 2022
Installation, Operation and Maintenance Manual
MAC050515 EN Rev. 0
Table of Contents
Section 10: Assembly Instructions
10.1 Grease Instructions ..................................................................................... 14
10.2 Pinion Assembly .......................................................................................... 15
10.3 Alignment of Pinion for Correct Piston Assembly ......................................... 15
10.4 Piston Assembly .......................................................................................... 16
10.4.1 Clockwise Rotation ........................................................................... 16
10.4.2 Counterclockwise Rotation .............................................................. 16
10.5 Travel Stop Assembly .................................................................................. 16
10.6 End Cap Assembly on Double-Acting Actuators .......................................... 17
10.7 Spring-Return Actuators ............................................................................. 17
10.7.1 Spring Set Adjustments .................................................................... 17
10.7.2 Installing the Spring and End Cap ..................................................... 18
Section 11: Bottom Mounted Stop Block
11.1 The Hytork Solution .................................................................................... 20
11.2 Basic Stop Block Assembly........................................................................... 20
11.3 General Notes when Fitting to Valves .......................................................... 21
11.3.1 Double-Acting .................................................................................. 21
11.3.2 Standard Conguration Fail-Safe Clockwise ...................................... 21
11.3.3 Reverse Action Fail-Safe Counterclockwise ....................................... 22
11.4 Actuator Conventions for the Normal Position............................................. 22
11.4.1 Double-Acting .................................................................................. 22
11.4.2 Spring-Return ................................................................................... 22
11.5 Assembly to Valves for Standard Rotation Conguration ............................. 22
11.5.1 Double-Acting and Fail-Safe Clockwise ............................................. 22
11.5.2 Stop Adjustment (Fail Closed) ........................................................... 23
11.6 Assembly to Valves for Reverse Action Conguration .................................. 24
11.7 Long Shaft Adaptor Dimensions and Materials............................................. 24
11.8 Adjustment of the Bottom Mounted Stop Block .......................................... 25
Section 12: Testing the Hytork Actuator
Testing the Hytork Actuator...................................................................................26
Section 13: Retractor Rods
13.1 Spring Removal System Board ..................................................................... 27
Section 14: Service
Service...................................................................................................................28
Section 15: Parts and Materials
Parts and Materials.................................................................................................29