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Instruction Manual
Form 5653
February 2007
Bettis Actuators G01 through G13
Bettis Service Instructions for Models G01
through G13 Pneumatic Actuators
The following instruction manual is for the Bettis of this manual. If you have any questions about
Actuator. This instruction manual was prepared by these instructions, contact the actuator manufacturer
Bettis, a member of the Valve Automation Division of before proceeding.
Emerson Process Management. Please contact
Bettis to ensure that the fol
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Instruction Manual Form 5653 February 2007 Bettis Actuators G01 through G13 Fisher and Bettis are marks owned by the Emerson Process Management business division of Emerson Electric Co. Emerson Process Management, Emerson, and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other marks are the property of their respective owners. The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accur
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ENGLISH LANUAGE BETTIS SERVICE INSTRUCTIONS FOR MODELS G01 THROUGH G13 PNEUMATIC ACTUATORS PART NUMBER: 124840E REVISION: “B” DATE: 17 December 2001
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Bettis P/N 124840E Revision “B” Page 1 of 46 CONTENTS SECTION 1.0 – INTRODUCTION PAGE 1.1 General Service Information ................................................................... 3 1.2 Definitions ............................................................................................... 4 1.3 General Safety Information ..................................................................... 4 1.4 Bettis Reference Materials ................................................................
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Bettis P/N 124840E Revision “B” Page 2 of 46 CONTENTS SECTION 5.0 - MODULE REMOVAL AND INSTALLATION 5.1 Spring Module Removal .......................................................................... 31 5.2 Spring Module Installation ....................................................................... 33 5.3 Pneumatic Power Module Removal ........................................................ 37 5.4 Pneumatic Power Module Installation ..................................................... 3
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Bettis P/N 124840E Revision “B” Page 3 of 46 SECTION 1 - INTRODUCTION 1.1 GENERAL SERVICE INFORMATION 1.1.1 This service procedure is offered as a guide to enable general maintenance to be performed on Bettis G01XXX, G2XXX, G3XXX, G4XXX, G5XXX, G7XXX, G8XXX, G10XXX, G13XXX Double Acting and Spring Return Series Single Power Module Pneumatic Actuators. This procedure can also be used on Bettis GXX2XX Double Acting Series Twin Power Modules Pneumatic Actuators. 1.1.2 Normal recommended service in
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Bettis P/N 124840E Revision “B” Page 4 of 46 1.2 DEFINITIONS WARNING: If not observed, user incurs a high risk of severe damage to actuator and/or fatal injury to personnel. CAUTION: If not observed, user may incur damage to actuator and/or injury to personnel. NOTE: Advisory and information comments provided to assist maintenance personnel to carry out maintenance procedures. ES: Extended stop screw (for travel stop adjustment over a full 100° degree travel range). ES is not intended for use a
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Bettis P/N 124840E Revision “B” Page 5 of 46 ACTUATOR BETTIS PART ACTUATOR BETTIS PART MODEL NUMBER MODEL NUMBER G01 None required G5/G7 117369 G2 123616 G8/G10 117368 G3/G4 117370 G13 122849 1.5.3 Commercial leak testing solution. 1.5.4 Non-hardening thread sealant. 1.6 LUBRICATION REQUIREMENTS NOTE: Lubricants, other than listed in step 1.6.1 should not be used without prior written approval of Bettis Product Engineering. 1.6.1. All temperature services (-50°F to +350°F)/(-45.5°C to 176.6°C) u
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Bettis P/N 124840E Revision “B” Page 6 of 46 2.1.3 The Pneumatic Power Module can be disassembled while still attached to the Drive Module or the Pneumatic Power Module can be removed from the Drive Module and disassembled separate to the actuator (refer to Section 5 - Module Removal And Installation). 2.1.4 To ensure correct re-assembly; that is, with Pneumatic Power Module or Spring Module on same end of Drive Module as was, mark or tag right (or left) and mark mating surfaces. 2.1.5 For Sprin
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Bettis P/N 124840E Revision “B” Page 7 of 46 2.2.4.2.2 Refer to assembly drawing page 2 of 2 Detail "E". If not already removed unscrew and remove two socket cap screws (3-130), with lockwasher (3-140), from outer end cap (3-80). 2.2.4.2.3 Remove socket cap screw (3-130) with lockwasher (3-140) from keeper (3-360). 2.2.4.2.4 Remove keeper (3-360) from outer end cap (3-80). 2.2.4.2.5 Push jackscrew (3-290) back into the outer end cap far enough so that the jackscrew adapter (3-280) will not inter
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Bettis P/N 124840E Revision “B” Page 8 of 46 2.2.8.1.2 Remove o-ring seals (4-80) from the inboard end of tie bars (3-20). 2.2.8.2.3 Remove tie bars (3-20) by pulling the tie bars out and through piston (3-30). NOTE: G4 models have flats on outboard end of tie bars (3-20) for wrench placement. NOTE: G5 through G13 models have a female square on the out board end of tie bars (3-20) for wrench placement. 2.2.8.2 Remove G4 through G13 tie bars (3-20) as follows: Unscrew and remove tie bars (3-20) f
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Bettis P/N 124840E Revision “B” Page 9 of 46 2.2.14 Unscrew and remove piston rod (3-40) from drive module. 2.3 DRIVE MODULE DISASSEMBLY NOTE: Review Section 2 steps 2.1.1 through 2.1.5 General Disassembly before proceeding with Drive Module Disassembly. 2.3.1 If not already removed remove piston rod (3-40) from drive module. NOTE: If the actuator is equipped with submerged stop screws with stop screw covers (1-195) then proceed to and complete steps 2.3.2.1 and 2.3.2.2 prior to doing step 2.3.2
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Bettis P/N 124840E Revision “B” Page 10 of 46 2.3.12 Using hex cap screws (1-110), install into holes vacated by hex cap screws (1-120). Use these hex cap screws to jack the housing cover up for removal. Alternately rotate the hex cap screws clockwise until housing cover (1-20) is clear of housing (1-10). NOTE: G01, G2, G3 and G4 model housing cover will have cast tabs for placing prying tools to aid in cover removal. 2.3.13 Remove housing cover (1-20) from housing (1-10). NOTE: Groove pins (1
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Bettis P/N 124840E Revision “B” Page 11 of 46 NOTE: One spherical washer (1-40) will be removed from guide block (1-30) when extension rod assembly is removed. On spring return actuators also one spherical washer (9-40) will be removed from guide block (1-30). 2.3.25 Remove the remaining spherical washer (1-40) from guide block (1-30). On spring return actuators also remove the remaining spherical washer (9-40) from guide block (1-30). 2.3.26 Unscrew and remove two stop screw nuts (1-190) from
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Bettis P/N 124840E Revision “B” Page 12 of 46 2.6 M3 JACKSCREW DISSASSEMBLY NOTE: The jackscrew bearing retainer (7-110) / (5-110), needle bearing thrust washer assembly (7-100) / (5-100) or retainer ring (7-90) / (5-90) does not require disassembly from the jackscrew assembly (7-40) / (5-50) except for the need to replace worn parts. For disassembly of these items refer to step 2.6.7. Remove M3 handwheel or M3 hex drive hub per Section 2.5. 2.6.1 G01-M3 JACKSCREW DISASEMBLY FROM BLIND END CAP
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Bettis P/N 124840E Revision “B” Page 13 of 46 2.6.4.2 Unscrew and remove hex flat nut (7-50) from M3 jackscrew assembly (7-40). 2.6.4.3 Unscrew and remove two socket cap screws (7-120) from M3 adapter (7-40). 2.6.4.4 Remove M3 jackscrew (7-40) from M3-SR adapter plate (7-10). 2.6.5 M3 THRUST BEARING DISASEMBLY FROM M3 JACKSCREW ASSEMBLY 2.6.5.1 Remove M3 bearing retainer (5-110) / (7-110) from inboard end of M3 jackscrew assembly (5-50) / (7-40). 2.6.5.2 Remove needle roller thrust bearing (5-10
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Bettis P/N 124840E Revision “B” Page 14 of 46 NOTE: The parts and seals used in the actuator will be assembled using lubricant as identified in section 1 step 1.6.1. 3.1.5 For Spring Module Installation refer to Section 5 step 5.2. 3.2 DRIVE MODULE REASSEMBLY NOTE: Review section 3.1 General Reassembly before proceeding with Drive Module Reassembly. NOTE: Refer to assembly drawing page 2 of 2 Detail "B" for section drawing of guide block. 3.2.1 If guide bar bearing (2-20) is being replaced inst
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Bettis P/N 124840E Revision “B” Page 15 of 46 3.2.10 Install second spherical washer (9-40) over threaded end of extension rod assembly (9-50). NOTE: The spherical side of the washer will go on the extension rod assembly facing the head of the extension rod assembly. 3.2.11 Install extension rod assembly (9-50) into guide block (1-30) and up against the first spherical washer (9-40). 3.2.12 Install extension retainer nut (9-60) over extension rod assembly (9-50) and screw into guide block (1-3
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Bettis P/N 124840E Revision “B” Page 16 of 46 3.2.22 Align hole in guide block (1-30) with the matching holes in the two yoke/guide block bushings (2-30) and the slots in the arms of yoke (1-70). NOTE: The yoke pin can be held in place by installing a screw into the .375-16UNC tapped hole in the upper end of yoke pin (1-80). 3.2.23 Install yoke pin (1-80) by inserting into the upper yoke arm, upper yoke/guide block bushing, guide block, lower yoke/guide block bushing, lower yoke arm and resting
