Peterbilt Medium Duty Trucks Operator's Manual after 1-07
Peterbilt Medium Duty Trucks Operator's Manual after 1-07
Peterbilt Medium Duty Trucks Operator's Manual after 1-07
You also want an ePaper? Increase the reach of your titles
YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.
Operating Instructions<br />
• If a trailer ABS problem is detected, the lamp<br />
will remain on. The driver should have the<br />
trailer’s ABS problem corrected before the vehicle<br />
is driven with that trailer attached.<br />
WARNING! Do not rely on an anti-lock brake system<br />
that is functioning improperly. You could<br />
lose control of the vehicle resulting in a severe<br />
accident and serious personal injury. If your<br />
ABS lamp goes on while you are driving or stays<br />
on <strong>after</strong> the self-check, your anti-lock system<br />
might not be working. The ABS may not function<br />
in an emergency. You will still have conventional<br />
brakes, but not anti-lock brakes. If the lamp indicates<br />
a problem, have the ABS checked.<br />
Wheel Spin Control Warning Lamp<br />
Your ABS may have an acceleration slip regulation (ASR) or<br />
automatic traction control (ATC) feature. Either of these features<br />
is monitored by a wheel spin control warning lamp. This<br />
lamp is located in the warning lamp cluster.<br />
The Wheel Spin Control warning lamp will briefly illuminate<br />
and then go out when the ignition switch is first turned on.<br />
The Wheel Spin Control warning lamp will illuminate whenever<br />
the ASR or ATC system detects drive wheel spin. The<br />
Using the Brake System<br />
lamp will remain illuminated as long as wheel spin is detected<br />
and the ASR or ATC system is applying the drive wheel<br />
brakes or reducing engine torque. Do not allow the Wheel<br />
Spin Control lamp to remain on continuously for an extended<br />
length of time. Extended, continuous use of the ASR / ATC<br />
can cause overheating of the drive wheel brakes. Engine<br />
torque or vehicle speed should be reduced to eliminate<br />
wheel spin and prevent excessive application of the ASR /<br />
ATC system.<br />
Except for checking for proper illumination of the ABS and<br />
Wheel Spin Control warning lamps when first starting the<br />
truck and for monitoring these lamps while driving, no special<br />
operating procedures are required. For detailed system<br />
description, see service literature for your specific ABS that<br />
was provided with your vehicle.<br />
Trailer Brake Hand Valve<br />
Tractor/trailer vehicles are equipped with a trailer brake hand<br />
valve mounted on the right side of the steering wheel column.<br />
This hand valve provides air pressure to apply the trailer<br />
brakes only. It operates independently of the foot treadle<br />
valve.<br />
<strong>Medium</strong> <strong>Duty</strong> (R10/06) Y53-6008 – 83 –
Change language