PART 7: STARTING & OPERATING THE VEHICLE
BRAKE SAFETY AND EMERGENCY
(05/10)
Y53-6032
– 117 –
The Wheel Spin Control warning lamp will briefly illumi-
nate and then go out when the ignition switch is first
turned on. The Wheel Spin Control warning lamp will illu-
minate whenever the ASR or ATC system detects drive
wheel spin. The lamp will remain illuminated as long as
wheel spin is detected and the ASR or ATC system is
applying the drive wheel brakes or reducing engine
torque. Do not allow the Wheel Spin Control lamp to
remain on continuously for an extended length of time.
Extended continuous use of the ASR / ATC can cause
overheating of the drive wheel brakes. Engine torque or
vehicle speed should be reduced to eliminate wheel spin
and prevent excessive application of the ASR/ATC sys-
tem.
Except for checking for proper illumination of the ABS and
Wheel Spin Control warning lamps when first starting the
vehicle, and for monitoring these lamps while driving, no
special operating procedures are required. For detailed
system description, see service literature for your specific
ABS that was provided with your vehicle.
Brake Safety and Emergency
To stop your vehicle in an emergency, vary the service
brake application pressure to provide maximum braking
force without locking the wheels. Use engine compression
to assist the service brakes; i.e., don’t depress the clutch
pedal until the engine reaches idle speed.
WARNING!
• Do not operate the vehicle in the event of a
malfunction in any air circuit. The vehicle
should not be operated until the system is
repaired and both braking circuits, includ-
ing all pneumatic and mechanical compo-
nents, are working properly. Loss of system
air can cause the service brakes not to
function resulting in the sudden application
of the spring brakes causing wheel lock-up,
loss of control, or overtake by following
vehicles. You could be in an accident, be
killed or severely injured.
Y53-6032.book Page 117 Monday, May 24, 2010 3:37 PM
Summary of Contents for Peterbilt 587
Page 1: ......