PART 4: CONTROLS AND DISPLAYS
PB1319 (CAT. NO. 5296 ) —40— 22-01691 (R02/02)
Air Application Gauge
This gauge will show you how much air pressure is being applied
from your foot brake valve or trailer brake hand valve.
Primary And Secondary Air Pressure Gauges (Air Reservoir)
These air pressure gauges indicate the amount of air pressure in the
brake system in pounds per square inch (psi). The primary gauge
shows the front reservoir air pressure.
WARNING! The air pressure warning light and the audible
alarm indicate a dangerous situation. There is not enough
air pressure in the reservoirs for repeated braking and the
brake system has failed. If air pressure falls below
60 psi
(414 kPa) the spring brakes could suddenly apply, causing
a wheel lockup, loss of control, or your vehicle to be over-
taken by following vehicles. You could be in an accident
and severely injured. If these alarms come on while you are
driving, bring your vehicle to a safe stop right away. If the
light and alarm do not turn off at start-up, do not try to
drive the vehicle until the problem is found and fixed.
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