October 2015
Service Instructions
127072E Rev. C
1
Section 1: Introduction
Introduction
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 G01X0X.X-SR-M11, G2X0X.X-SR-M11, G3X0X.X-SR-M11,
G4X0X.X-SR-M11, G5X0X.X-SR-M11, G7X0X.X-SR-M11, G8X0X.X-SR-M11 and
G10X0X.X-SR-M11 Spring-Return Series Single Hydraulic Power Module Actuators
with M11 or M11-S hydraulic override module.
1�1�2 Normal recommended service interval for this actuator series is ve years.
NOTE:
Storage time is counted as part of the service interval.
1�1�3 This procedure is applicable with the understanding that all electrical power and
hydraulic pressure have been removed from the actuator.
1�1�4 Remove all piping and mounted accessories that will interfere with the module(s)
that is to be worked on.
1�1�5 This procedure should only be implemented by a technically competent technician
who should take care to observe good workmanship practices.
1�1�6 Numbers in parentheses ( ) indicate the bubble number (reference number) used
on the Bettis assembly drawing and actuator parts list.
1�1�7 This procedure is written using the stop screw side of the housing (1-10) as a
reference and this side will be considered the front side of the actuator. The
housing cover (1-20) will be the top of the actuator.
1�1�8 Actuator module weights are listed in Section 6 Table 6.1.
1�1�9 When removing seals from seal grooves, use a commercial seal removing tool or a
small screwdriver with sharp corners rounded off.
1�1�10 Use a non-hardening thread sealant on all pipe threads.
CAUTION: FOLLOW MANUFACTURER'S INSTRUCTIONS
Apply the thread sealant per the manufacturer’s instructions.
1�1�11 Emerson recommends that disassembly of the actuator modules should be done
in a clean area on a work bench.
1�2 Definitions
WARNING
If not observed, user incurs a high risk of severe damage to actuator and/or fatal injury
to personnel.
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