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
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Preventive Maintenance<br />
Visually inspect brake shoe lining for wear, cracks, or breakage.<br />
If linings are worn down to 2.5 mm (0.10 in), they must<br />
be replaced. Inspect brake drum for deep scores, heat spots,<br />
cracks, or damage. Replace if needed.<br />
BRAKE<br />
SHOE<br />
LININGS<br />
Anti–Lock Braking System (ABS)<br />
Brake System<br />
Your <strong>Medium</strong> <strong>Duty</strong> is equipped with an anti-lock braking system.<br />
For detailed service information, see the <strong>Peterbilt</strong><br />
<strong>Medium</strong> <strong>Duty</strong> Maintenance <strong>Manual</strong>. All service work<br />
should be performed by a qualified technician at an Authorized<br />
Service Center. The foundation brake system must be<br />
in proper working order to ensure the best ABS performance.<br />
CAUTION: Do not weld anywhere on the vehicle<br />
before detaching the ABS Electronic Control Unit<br />
(ECU) connector and all other electronic control<br />
units. Welding equipment can send an energy<br />
surge through electronic equipment and cause<br />
damage. Disconnect all ECUs before attaching<br />
welding equipment.<br />
PARKING BRAKE COMPONENTS<br />
CAUTION: Never detach the ECU connector with<br />
the ignition turned on. The connectors could arc<br />
and damage electronic equipment. Turn off the<br />
ignition before disconnecting any electronic<br />
equipment.<br />
Other precautions<br />
• Check ABS wiring harnesses periodically for chafing or<br />
other problems. No regular maintenance is required on<br />
the ABS components.<br />
<strong>Medium</strong> <strong>Duty</strong> (R10/06) Y53-6008 – 157 –