AIR SYSTEM and non-compressing cycle) in a normal fashion or it may be due to excessive leaks in the air system. Overhaul Bendix® AD-IS Series Air Dryer Maintenance intervals typical for on-highway operation would be 2 - 3 years, 350,000 miles or 10,800 hours. Your vehicle may be equipped with a Bendix® AD-IS series air dryer. Any air dryer replacement should be made with an identical component. In areas where more than a 30° F (17° C) range of temperature occurs in one day, small amounts of water can accumulate in the air brake system due to condensation.
Under these conditions, the presence of small amounts of moisture is normal and should not be considered as an indication that the dryer is not performing properly. Maintenance intervals typical for high duty cycle usage such as transit bus, refuse hauler, dump truck, cement mixers and off-highway operation would be 1 year, 100,000 miles or 3,600 hours. WARNING! If a different air dryer brand or model is installed on the vehicle other than what was originally installed, it could cause the air system to not perform correctly unless the full air system design is reviewed and modifica- tions made to comply with Federal Motor Vehicle Safety Standards (FMVSS) 121 - Air Brake Systems.
Failure to abide by this warning and maintain compliance to FMVSS 121 could cause loss of vehicle control and may lead to death or serious personal injury. NOTE Review the warranty policy before performing any maintenance proce- dures. An extended warranty may be voided if unauthorized mainte- nance is performed during this pe- riod. An outside air source has been used to charge the air system. This air did not pass through the drying bed. 5 The AD-IS Series air dryer has incorporated into its design various (03/17) Y53-6077-1B1 5-61