Kenworth T410, Driver'S Handbook Manual

Page: 51 / 418

CAT: 8612 November 2019 Page 25
OPERATING INSTRUCTIONS
8 & 9. Front and Rear Air Pressure
The air gauges indicate the air pressure in the truck air system. There
are two indicator dials, the primary dial and icon is for the rear air system
while the secondary dial and icon is for the front air system. The gauges
indicate the amount of air pressure in each system.
On vehicles equipped with metric air pressure gauges, the gauge face
plate includes a bar (major) scale and psi (minor) scale.
Refer to ‘Air Loss Emergency Procedure’ on page 17 for instructions on
what to do if the air system becomes inoperative.
Be sure the air pressure registers more than 100psi (6.9bar) in both service
systems before you move the vehicle.
If the pressure in either or both circuits falls below 65psi (4.48bar), a red
warning light in the gauge will turn on and an audible alarm will sound
when the engine is running.
If the air pressure falls below 60psi (4.14bar), the spring brakes may
stop the vehicle abruptly which could cause an accident resulting
in death or personal injury. Observe the red warning lamps on the
gauges. If one comes on, do not continue to drive the vehicle until it
has been properly repaired or serviced. 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.
The air pressure warning light and the audible alarm indicate a
dangerous situation; there is not enough air pressure in the air tanks
for repeated braking and the brake system has failed. Without the
use of your service brakes your spring brakes could suddenly apply
causing a wheel lock-up, loss of control, or overtake by following
vehicles. This may cause an accident resulting in death or personal
injury. Immediately bring the vehicle to a safe stop, while you still
have control of the vehicle.
10. Trip Reset Button
The cluster mounted trip reset button is the only way to zero trip data.
After toggling the trip odometer (ODO) (short pushes to select trip A, B,
C, or D) to the desired trip, HOLD the trip reset button, that resets the
displayed trip data.