operators_manual

Clutch Abuse Protection
The clutch can overheat and slip with
improper use.Select the lowest possible
start gear for the application.
• If moving slowly is required, select
1st or R1.
• Use the Service Brake and let Hill
Start Aid assist you when
launching on an incline.
• Do NOT use the throttle to hold the
vehicle on an incline. (Use Service
Brake).
• Do NOT use the throttle to stop roll
back on an incline after Hill Start
Aid disengages. (Use Service
Brake and then relaunch).
Gear Display Icon (Clutch Abuse)
If the clutch does start to overheat, the
display will show “CA” along with a warning
tone. Full clutch actuation must be
completed quickly. If not, the system will
either open the clutch if not on the throttle
or close the clutch if on the throttle. If the
abuse continues, the system will open the
clutch and take away throttle control for a
short period of time to allow the clutch to
cool down.
Automatic Transmissions
An automatic transmission makes shifting
much easier. It remains important to
completely understand how to operate the
transmission to optimize its efficiency.
Please read the manual for your automatic
transmission included with your vehicle.
WARNING
DO NOT leave the cab of your vehicle
without applying the parking brake.
The truck could roll and cause an acci-
dent resulting in death or personal in-
jury. Always apply the parking brake
before you leave the cab.
Auxiliary Transmission
If you have an auxiliary transmission, see
your transmission manufacturer’s manual
for its proper operation.
Brakes
Air Brake System
WARNING
DO NOT drive through water deep
enough to wet brake components, as it
may cause the brakes to work less ef-
ficiently than normal. The vehicle's
stopping distance may be longer than
expected, and the vehicle may pull to
the left or right when brakes are ap-
plied, which could contribute to an ac-
cident involving death or personal in-
jury.
Compressed air is delivered to the brake
system through the valve at the brake
pedal and is controlled with various valves
and braking circuits. The brake system is
designed with separate front, rear, and
(when applicable) trailer circuits so that if
one circuit is compromised and loses air,
the other circuits will not be affected.
Safety valves in each circuit will protect the
other circuits in the event that a circuit
loses air.
DRIVING - Brakes
Y53-6126-1A1 (01/21) 159
4