EMERSON Manuals Bettis M11 Hydraulic Override System for HD, T, and G-Series Pneumatic and Hydraulic Actuators
Summary
Optimize your knowledge of the Bettis M11 Hydraulic Override System designed for HD, T, and G-Series Actuators. This comprehensive service manual provides trained technicians with detailed instructions covering everything from initial fluid filling to complex disassembly and reassembly procedures. It serves as an essential guide ensuring safe, proper maintenance and effective operation of your hydraulic control system components.
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Operation and Maintenance Manual
126858E Rev. F November 2014
Bettis M11 Hydraulic Override System For HD, T, and G-Series Pneumatic and Hydraulic Actuators
Page Summary Contents For EMERSON Manuals Bettis M11 Hydraulic Override System for HD, T, and G-Series Pneumatic and Hydraulic Actuators
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Operation and Maintenance Manual 126858E Rev. F November 2014 Bettis M11 Hydraulic Override System For HD, T, and G-Series Pneumatic and Hydraulic Actuators
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Operation and Maintenance Manual Table of Contents 126858E Rev. F November 2014 Table of Contents Section 1: Introduction 1.1 General M11 Service Information .............................................
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Section 1: Introduction Operation and Maintenance Manual November 2014 126858E Rev. F Section 1: Introduction 1.1 General M11 Service Information 1.1.1 M11 is a compact modular hydraulic override syst...
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Operation and Maintenance Manual Section 1: Introduction 126858E Rev. F November 2014 CAUTION: APPLY THREAD SEALANT Apply thread sealant per the manufacturer's instructions. 1.2 Definitions WARNING If...
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Section 1: Introduction Operation and Maintenance Manual November 2014 126858E Rev. F 1.4 Fluid Requirements 1.4.1 M11 Manual Hydraulic Override System Fluid Requirements: Hydraulic fluids, other than...
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Operation and Maintenance Manual Section 2: General Information 126858E Rev. F November 2014 Section 2: General Information 2.1 Actuator Power Operation CAUTION: PLACE CONTROL KNOB IN AUTO POSITION Po...
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Section 3: M11 System Fluid Filling Instructions Operation and Maintenance Manual November 2014 126858E Rev. F Section 3: M11 System Fluid Filling Instructions 3.1 Double-Acting Actuator M11 System Fl...
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Operation and Maintenance Manual Section 3: M11 System Fluid Filling Instructions 126858E Rev. F November 2014 3.1.2.2.3 HD-Series Actuators, remove pipe plug from the top area on the outer end of the...
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Section 3: M11 System Fluid Filling Instructions Operation and Maintenance Manual November 2014 126858E Rev. F NOTE: Add fluid to the reservoir through the open port left vacant in Step 3.1.2.10. 3.1....
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Operation and Maintenance Manual Section 3: M11 System Fluid Filling Instructions 126858E Rev. F November 2014 3.1.3.6 Stop pumping the M11 pump handle when hydraulic fluid appears at both vacant pipe...
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Section 3: M11 System Fluid Filling Instructions Operation and Maintenance Manual November 2014 126858E Rev. F NOTE: The pressure pump should not exceed 10 to 20 psi when force filling the M11 hydraul...
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Operation and Maintenance Manual Section 3: M11 System Fluid Filling Instructions 126858E Rev. F November 2014 NOTE: Only remove the pipe plugs located at the highest points, in the vertical plane, of...
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Section 4: M11 Disassembly Instructions Operation and Maintenance Manual November 2014 126858E Rev. F Section 4: M11 Disassembly Instructions 4.1 M11 Pressure Release Instructions NOTE: Shut off and e...
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Operation and Maintenance Manual Section 4: M11 Disassembly Instructions 126858E Rev. F November 2014 4.2.2 Loosen socket cap screws (30-20) and remove the M11 reservoir from the M11 mounting bracket ...
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Section 4: M11 Disassembly Instructions Operation and Maintenance Manual November 2014 126858E Rev. F 4.3.4 Refer to Assembly Drawing. To remove the check valve (20-40) from the manifold (20-10), move...
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Operation and Maintenance Manual Section 4: M11 Disassembly Instructions 126858E Rev. F November 2014 4.3.15 Remove pivot pin (20-130) from pump rod (20-50). NOTE: If the M11 pump is equipped with Aut...
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Section 5: M11 Reassembly Instructions Operation and Maintenance Manual November 2014 126858E Rev. F Section 5: M11 Reassembly Instructions 5.1 M11 General Reassembly Instructions CAUTION: INSTALL NEW...
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Operation and Maintenance Manual Section 5: M11 Reassembly Instructions 126858E Rev. F November 2014 5.2.1 Refer to the Assembly Drawing. If disassembled, reassemble the following items: 5.2.1.1 Pipe ...
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Section 5: M11 Reassembly Instructions Operation and Maintenance Manual November 2014 126858E Rev. F 5.3.2 Install one check valve (20-40) with O-ring seal into the bottom of pump rod (20-50). 5.3.3 I...
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Operation and Maintenance Manual Section 5: M11 Reassembly Instructions 126858E Rev. F November 2014 5.3.16 If removed, install two pump links (20-60). Retain the two pump link to pump cover (20-20) u...
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Section 5: M11 Reassembly Instructions Operation and Maintenance Manual November 2014 126858E Rev. F 5.3.28 Install the control knob (20-320) onto the control valve (20-190). 5.3.29 Retain the control...
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Operation and Maintenance Manual Section 6: Modifications 126858E Rev. F November 2014 Section 6: Modifications 6.1 M11 Pump Handle Reorientation 6.1.1 Remove the four socket cap screws (20-110) from ...
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Section 7: Document Revision Operation and Maintenance Manual November 2014 126858E Rev. F Section 7: Document Revision Table 1. Revision Overview ECN DATE REV BY * DATE 26 October 06 COMPILED L. Rami...
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Operation and Maintenance Manual Section 8: Appendix 126858E Rev. F November 2014 Appendix A: List of Drawings A.1 Part No. VA127247-Q, M11 Assembly Drawing Appendix
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Section 8: Appendix Operation and Maintenance Manual November 2014 126858E Rev. F A.2 Part No. VA135978-A, M11 Installation Drawing Appendix
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Manual Details
| Brand | Emerson |
|---|---|
| Pages | 28 |
| File Size | 1.36 MB |
| Published | June 06, 2026 |
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Frequently Asked Questions
What kind of actuators is the M11 system designed for?
It is designed for Bettis Double-Acting and Spring-Return Actuators.
Under what circumstances should I disassemble the M11 system?
You should only disassemble it if either the pump or the reservoir fails its manual hydraulic override function.
What thread sealant should be used on M11 threads?
Use a non-hardening thread sealant; do not use Teflon tape.
Is periodic field maintenance recommended for the M11 system?
Bettis does not recommend periodic field maintenance for the M11 Manual Hydraulic Override System.