1®Bendix® AD-9si™ and AD-9si™ PuraGuard® Oil Coalescing Air DryerDESICCANTCARTRIDGE(PURAGUARD® OIL COALESCING SHOWN)IN 1SUPPLY FROM COMPRESSORHEATER /
10 DO NOT ATTEMPT TO REMOVE THE CLAMP BAND THAT RETAINS THE TWO HOUSINGS TOGETHER. SERIOUS INJURY OR DEATH MAY OCCUR IF THESE INSTRUCTIONS ARE NOT FO
11FIGURE 7 - BENDIX® AD-9si™ AIR DRYER SERVICEABLE COMPONENTSGASKETGOVERNORSPRINGDELIVERY CHECK VALVE BODYSMALL O-RINGSAFETY VALVEDESICCANT CARTRIDGE
12If, after bypassing the air dryer, the system pressure still does not build, use the following procedure to remove, clean, and reinstall the deliver
13BENDIX®AD-9si™ AIR DRYERTROUBLESHOOTING CHARTSYMPTOM CAUSE REMEDY1. Dryer is constantly “cycling” or purging.A. Excessive system leakage. A. Test
14BENDIX®AD-9si™ AIR DRYERTROUBLESHOOTING CHARTSYMPTOM CAUSE REMEDY2. Water in vehicle reservoirs. A. Maximum air dryer inlet temperature is exceede
15BENDIX®AD-9si™ AIR DRYERTROUBLESHOOTING CHARTSYMPTOM CAUSE REMEDY5. Cannot build system air pressure.A. Supply pressure to the air dryer is not
SD-08-2433 © 2014 Bendix Commercial Vehicle Systems LLC, a member of the Knorr-Bremse Group • 9/14 • All Rights ReservedLog-on and Learn from the B
2GENERAL SAFETY GUIDELINESWARNING! PLEASE READ AND FOLLOW THESE INSTRUCTIONSTO AVOID PERSONAL INJURY OR DEATH:When working on or around a vehicle, the
3DESCRIPTIONThe function of both the Bendix® AD-9si™ air dryer and the Bendix® AD-9si™ PuraGuard® oil coalescing air dryer is to collect and remove ai
4FIGURE 2 - BENDIX® AD-9si™ AIR DRYER WITH GOVERNOR—CHARGE CYCLECOMPRESSORGOVERNORDESICCANT BEDDELIVERY CHECK VALVEPURGE VALVECONTROL PORT SUPPLY PORT
5COMPRESSORGOVERNORDESICCANT BEDDELIVERY CHECK VALVEPURGE VALVETURBO CUT-OFF VALVE (CLOSED)CONTROL PORT SUPPLY PORTFRONTRESERVOIRSAFETYVALVEREARRESERV
6FIGURE 4 - BENDIX® AD-9si™ AIR DRYER WITHOUT GOVERNOR—CHARGE CYCLECOMPRESSORDESICCANT BEDDELIVERY CHECK VALVEPURGE VALVETURBO CUT-OFF VALVE (OPEN)CON
7COMPRESSORDESICCANT BEDDELIVERY CHECK VALVEPURGE VALVETURBO CUT-OFF VALVE (CLOSED)CONTROL PORT SUPPLY PORTFRONTRESERVOIRSAFETYVALVEREARRESERVOIRPURGE
8PREVENTIVE MAINTENANCEImportant: Review the warranty policy before performing any intrusive maintenance procedures. An extended warranty may be voi
91. Visually check for physical damage, such as chafed or broken air and electrical lines, and broken or missing parts.2. Check the Bendix® AD-9si™
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