AD-9si and AD–IS
49X mm 42.02.003
      - Park the vehicle on a level surface, shut down the engine, and apply the parking brake. Chock the tires.
 - Drain the air reservoirs.
 - Using a strap wrench or equivalent, loosen the desiccant cartridge. Spin the cartridge off by hand and discard it. See Fig..
 - On the new desiccant cartridge, lubricate the sealing rings with silicone grease.
 - Screw the desiccant cartridge onto the body by hand until the seal makes contact with the body. Rotate the cartridge clockwise about one full turn. Tighten the cartridge firmly.
 
Important: Only use the silicone grease supplied with Bendix replacement kits.
Note: 
      