Air System Maintenance
Inadequate delivery pressure or defective component operations can generally be traced to
leakage, blocked lines, or the build up of moisture and sediment in the system. A regular
program of periodic maintenance is an essential part of air system operation. The materials
presented here are listed in accordance with the MAINTENANCE CHECK LIST in Section 4.
Consideration of severe working conditions may dictate a revision in scheduling periodic
checks.
DAILY:
AIR TANKS
Open the air tank drain cocks at least once daily to blow out moisture and accumulated
sediment. There are five (5) tanks in the air system, all having drain cocks on the bottom of
the tank. The accessory tank is located at the front of the machine, behind the front
outrigger. The wet tank is located just inside of the fuel tank with the rear tank immediately
behind it. The front tank is located just inside of the hydraulic tank. The park brake tank is
located at the rear of the machine in the center just ahead of the rear outriggers.
WEEKLY:
AIR SYSTEM SAFETY VALVE
Manually actuate the air system safety valve by pulling out the system. This will ensure that
the valve is not sticking. If the valve cannot be actuated in this manner, it should be
repaired or replaced. The valve is located on the wet tank.
319P/N 12261-683 REVISED: January 2015
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