BENDIX TCH-001-051 User's Manual
Contents
1. Technical Bulletin Bulletin No TCH 001 051 Effective Date 3 27 03 Cancels N A Page 1 of 1 subject BA 921 COMPRESSOR UNLOADER CAP REPLACEMENT KIT Bendix Commercial Vehicle Systems has determined that for some BA 921 air compressors under en certain conditions air pressure can collect above the unloader piston This prevents the compressor from return to the unloaded mode causing it to constantly build air Bendix has determined that this condition gt te Unloader m Gasket is not safety related f Spray Shield l C Unloader Ta Cap To guard against this occurring Bendix has developed a replacement unloader cap designed to prevent air being retained above the unloader piston Cine Bendix recommends that all BA 921 air compressors Head listed at the bottom of this page have the replacement unloader cap kit installed Detroit Diesel Corp and Caterpillar Inc will be conducting a service campaign where authorized Figure 1 DDC and CAT service centers will offer unloader ry BA 921 Unloader cap replacement kits The kits Bendix part number cap 5012771 contain an unloader cap unloader gasket DA Ma j cot Expanded View and spray shield see Figure 1 along with installation instructions Replacement should take less than 20 minutes to complete Where a spray shield is already installed the unloader cap upgrade has already been made and no action is needed Only the BA 921 compressors listed be2. low are part of this service campaign For any other technical questions contact your local DDC or CAT Service Center Call Bendix at 1 800 AIR BRAKE 1 800 247 2725 option 2 or write to Bendix Commercial Vehicle Systems LLC 901 Cleveland Street Elyria OH 44035 Attention TechTeam Engines and compressor part numbers included in this service campaign Engine Engine BA 921 Part Numbers Manufacturer Type Series 60 5010821 DDC 23531315 C9 5010803 CAT 191 6521 C15 5 C18 5011427 CAT 223 3637 C11 C13 5011441 CAT 223 3636 2003 Bendix Commercial Vehicle Systems LLC 3 2003 All rights reserved Printed in U S A
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