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BW2234  ©  

2011  Bendix Commercial Vehicle Systems LLC, a member of the Knorr-Bremse Group • 07/11 • All Rights Reserved

Summary of Contents for AD-IS -

Page 1: ...and Reservoir Systems DESICCANT CARTRIDGE PURAGUARD OIL COALESCING SHOWN PURGE RESERVOIR 24 AUX1 AUXILIARY DELIVERY PORTS 4 GOVERNOR PRESSURE PROTECTION VALVES 4 HEATER THERMOSTAT SAFETY VALVE AIR DRY...

Page 2: ...in the other reservoir or a pressure loss in an air accessory Each of the pressure protection valves in the AD IS air dryer and reservoir systems may have different pressure settings These are factor...

Page 3: ...ure that is designed to prevent loss of engine turbo boost pressure during the purge cycle of the Bendix AD IS air dryer and reservoir system For ease of maintenance all replaceable assemblies can be...

Page 4: ...ompressor activating the purge cycle of the air dryer and reservoir The governor unloads the compressor by allowing air pressure to fill the line leading to the compressor unloader mechanism This susp...

Page 5: ...f temperature occurs in one day small amounts of water can temporarily accumulate in the air brake system due to condensation Under these conditions the presence of small amounts of moisture is normal...

Page 6: ...ch in the RUN position check for voltage to the heater and thermostat assembly using a voltmeter or test light Unplug the electrical connector at the air dryer and reservoir system and place the test...

Page 7: ...ll reservoir drain valves 2 Build up system pressure to governor cut out and note that the Bendix AD IS air dryer purges with an audible burst of air followed immediately by approximately 30 seconds o...

Page 8: ...8 FIGURE 7 SPLASH SHIELD BRACKET AND COVER EXPLODED VIEW SPLASH SHIELD BRACKET SPLASH SHIELD COVER LOCK TABS...

Page 9: ...ocation Note that a short puff of trapped air may vent from the safety valve port when removing the valve Install a T fitting into the port Using any adapters necessary reinstall the safety valve in o...

Page 10: ...ot use solvents 3 Inspect for physical damage to the bore and the check valve seat If the bore is damaged by scratches etc that would prevent delivery check valve from seating replace the AD IS air dr...

Page 11: ...governor cut out and allow a full minute for the normal dryer purge cycle to empty the purge reservoir Switch off the engine and fan the brakes so that the system pressure reaches governor cut in The...

Page 12: ...dryer not purging F Refer to Symptom 6 G Purge air exhaust time insufficient due to excessive system leakage G Refer to Symptom 1 3 Safety valve on air dryer popping off or exhausting air A Defective...

Page 13: ...eing expelled from air dryer purge valve exhaust may look like whitish liquid or paste or small beads A Faulty dryer cartridge A Replace the Bendix AD IS air dryer cartridge or AD IS air dryer B Exces...

Page 14: ...14 BW2234 2011 Bendix Commercial Vehicle Systems LLC a member of the Knorr Bremse Group 07 11 All Rights Reserved...

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