Inspection of the Air Brake System Valve

49X mm 42.01.001

Note: There is no scheduled air valve maintenance on vehicles equipped with Bendix air valves and a Bendix air dryer if the air dryer desiccant is replaced at 350,000 miles (563 000 km). If the desiccant is not changed at 350,000 miles (563 000 km), or if the vehicle is equipped with another air dryer, maintenance will have to be performed to the air brake valves. See  of the 47X and 49X Workshop Manual for procedures.

Important: For vehicles equipped with an oil-coalescing air dryer desiccant cartridge, replace the cartridge once a year, regardless of mileage.

Note:
Parent topic: Brakes
Document Number: 0000119325
Manual Publication Date: 2024-05-16
Topic Publication Date: 2024-10-31