Bettis LCD PAK Seal Installation for CBA Series Actuators Manuals & Guides

Service Instructions
Part Number: 153955, Rev. B
Release: May 2012
LCD PAK Seal Installation for CBA Series Actuators
Service Instructions
Part Number:153955, Rev. B
Table of Contents
Section 1: Introduction
1.1 Purpose ......................................................................................................... 1
1.2 Denitions .................................................................................................... 1
1.3 Service Tool Information ............................................................................... 1
1.4 Lubrication Requirements ............................................................................. 1
1.5 Other Notes .................................................................................................. 1
Section 2: Installation
2.1 Tools Used..................................................................................................... 2
2.2 Kit Items ....................................................................................................... 2
2.3 Procedure ..................................................................................................... 3
Table of Contents
Section 3: Document Revision
Revision Overview..................................................................................................10
Appendix A: List of Figures
List of Figures.........................................................................................................11
Table of Contents
I
Service Instructions
Part Number:153955, Rev. B May 2012
Section 1: Introduction
Section 1: Introduction
1.1 Purpose
The purpose of these instructions is to inform the reader/installer on the correct procedure for installing CBA torque-shaft seals, using Installation Rings that are designed specically for this task and are included in CBA service kits. If instructions are followed, the chance for seal dam­age upon installation should be eliminated.
1.2 Definitions
1.2.1 Installation Ring - A rubber ring that comes with the CBA service kit to be installed into the snap ring groove of the torque-shaft prior to new seal installation.
1.2.2 LCD PAK Seal - A custom seal designed with a double sealing point surface. LCD stands for “Lip Cut Double.” The term “PAK” received its name from the “PolyPak” seal which is a combination of a PolyPak shell energized with an O-Ring expander. The LCD PAK seal used for the CBA does not contain an O-Ring expander.
1.3 Service Tool Information
There are many ways to install the LCD PAK seals, because different tools can be used to do so. In these instructions, basic shop tools that are commonly available were used to illustrate that it is not needed or important to use special tools.
1.4 Lubrication Requirements
It is very important to not over-grease the seal upon installation. Over lubricating can cause problems during installation by halting the seal from seating all the way in the groove (if too much grease is between the seal and housing). As shown in the pictures below, use a light coat of grease on the seals when installing.
1.5 Other Notes
The Installation Rings (or ller rings as commonly referred to), are disposable items as they only need to be used one time and are contained in the CBA service kits. However, it is possible to reuse them by picking instead of cutting them out of the rotor clip groove.
Introduction
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