Navistar WorkStar Series, Руководство оператора

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Operation
Air Gauge, Low Air Pressure Beeper and Warning Indicator
WARNING
To prevent loss of vehicle braking or control
resulting in property damage, personal injury, or
death, never operate the vehicle when insufficient
air pressure (less than 70 psi [483 kPa]) is
indicated for either the primary or secondary air
system. The volume of air required to stop the
vehicle may be greater than that available. Have
the brake system checked and repaired before
returning the vehicle to service.
Should air pressure in either section of the split air brake system
be reduced to 70 ± 6 psi (483 ± 41 kPa) the warning beeper will
sound and the red BRAKE PRESSURE warning indicator on the
instrument panel gauge cluster will glow. Also, the air gauge(s)
will indicate low air pressure in at least one of the independent
systems.
The warning beeper and red indicator will automatically
shut off when the air pressure in both systems is sufficient
(approximately 70 psi [483 kPa]) to operate the vehicle.
Should the red indicator and beeper not shut off soon after
startup, the air pressure gauge(s) should also indicate at least
one section of the split system has low air pressure.
If the red indicator, beeper, and gauge indicate a loss of
pressure while driving, the vehicle still has a portion of the
braking capability, because one-half of the split system braking
capability is retained. In the event of primary pressure system
loss, the spring brakes will assist the front brakes in stopping
the vehicle. However, the distance required to stop the vehicle
will be increased.
Brake Application
Rapid successive brake applications and release, sometimes
referred to as fanning or pumping the pedal, should be avoided.
This is an inefficient way of slowing or stopping a vehicle
and inefficient use of air pressure. It also defeats the proper
operation of the ABS.
Parking Brake
WARNING
Failure to comply with the following may result in
property damage, personal injury, or death.
Under no circumstances should the spring brake
chamber be disassembled.
Disassembly will
release a powerful spring which could result in
property damage, personal injury, or death.
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