AIR SYSTEM PREVENTIVE MAINTENANCE
– 192 – Y53-6033
Regional Haul (R05/10)
The two service tanks (or “dry” tanks), must be drained on
a weekly basis. Drain the two service tanks by opening
the drain valves. Turn valve handles counter-clockwise,
and leave open until the escaping air is free of water.
WARNING! If the supply and service tanks are
not drained at the recommended frequency,
water could enter the air lines and valves.
This could cause corrosion or blockage,
which could compromise the brake system
safety and potentially cause an accident
involving death or injury.
Periodically: Clean filter screens ahead of the valves by
removing the screens and soaking them in solvent. Blow
them dry with pressurized air before reinstalling them.
CAUTION: Do not use penetrating oil, brake
fluid, or wax-based oils in the air system.
These fluids may cause severe damage to air
system components.
Location of Air Tanks
FRONT
SECONDARY
(SERVICE) TANK
DRAIN VALVE
WET (SUPPLY)
TANK UNDER
REAR PRIMARY
(SERVICE) TANK
02602
FRONT SERVICE
TANK
