BENDIX TCH-002-011 User's Manual
Contents
1. Technical Bulletin Bulletin No TCH 002 011 Effective Date 9 15 2008 Cancels N A Page 1 of 1 Subject Air Disc Brake Chamber Identification Proper identification is crucial to servicing Bendix ADB22X air disc brake chambers Air disc brake chambers can be much smaller than typical drum brake chambers in similar vehicle applications For example a common drum brake trailer application may utilize a Type 30 service brake chamber where an air disc brake for the same trailer application would require a smaller Type 18 service brake chamber The external diameter of a brake chamber on a drum brake application is often utilized to determine the relative size of brake chambers However the external diameter cannot be used for selecting service replacement actuators or components for air disc brakes In some air disc brake applications even though the external diameter of two brake chambers may be identical the internal components may be different It is only the internal components creating the application specific balance critical force output that designates these brake chambers as for example a Type 18 or a Type 20 To accurately identify the proper brake chamber for replacement in an air disc bake application the brake chamber part number and or the actual type must first be identified This information is permanently attached to the chamber The figure s below identify common locations for these permanent brake chamber markings2. With this information your authorized Bendix Distributor can properly identify the proper replacement component You can also contact 1 800 AIR BRAKE 1 800 247 2725 for additional assistance Air Disc Brake Service Chamber Air Disc Brake Spring Brake Chamber Knorr Bremse Type Size Part Number Bendix Part oa Number A ch Type Size Kel Bendix Part Number i Bendix Spicer Foundation Brake LLC A Bendix CVS and Dana Joint Venture 2008 Bendix Commercial Vehicle Systems LLC 9 2008 All rights reserved Printed in U S A
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