3 Description and Operation
36
Always connect both trailer air lines when towing a trailer.
Failure to connect both the trailer service (BLUE), and the
trailer supply (RED) air lines greatly reduces braking
ability of the tractor trailer combination and creates a
serious hazard. This increases the possibility of an
accident and could result in serious injury or death.
Never operate the vehicle when system air pressure is
below 70 P.S.I. (4.83 bar). There may not be enough air in
the system to stop or slow the vehicle. Have the brake
system checked by a certified air brake mechanic if there
is any doubt about the brake system performance. Failure
to ensure sufficient air pressure can result in serious
injury or death.
ABS
Some trucks may be equipped with the Anti-lock Braking
System (ABS). The ABS is designed to prevent wheel lockup
during hard braking.
Trucks equipped with ABS have an indicator light located in
dash panel 1. The indicator light will warn the operator if there
is a potential problem in the system.
Trucks should not be operated if the indicator light is on.
Contact your nearest Kalmar dealer for qualified service on the
ABS.
Trucks built with ABS after March of 2002 have the capability
to check the trailer for a properly operating system. After
connecting a trailer to the truck, the system will run a
diagnostics check. If a problem is detected with the trailer side
of the ABS, a trailer warning indicator light on the dash will
illuminate.
Traction Control
Automatic traction control (ATC) is available as an option on
trucks equipped with the Anti-lock Braking System. When
activated, the ATC active/warning lamp will be on and the
system will limit wheel spin during hard acceleration. The
system is activated by turning on the ATC enable/disable
switch located on the dash. During activation, the warning
lamp will blink to advise the driver that drive-wheel spin is
occurring.
ATC can be disabled while the vehicle is stationary or in
motion. However, ATC will not re-enable until the vehicle
comes to a complete stop, even with the switch turned to the
ENABLE position.
