Regional Haul Model Operator's Manual - Peterbilt Motors Company
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Regional Haul Model Operator's Manual - Peterbilt Motors Company

Regional Haul Model Operator's Manual - Peterbilt Motors Company Regional Haul Model Operator's Manual - Peterbilt Motors Company

peterbilt.com
from peterbilt.com More from this publisher
20.05.2014 Views

BRAKE SYSTEM PREVENTIVE MAINTENANCE Calipers BRAKE PADS ANCHOR PLATES BRAKE PADS Visually inspect calipers for brake fluid leakage, damaged or defective pistons or piston boots. If there is evidence of leakage, damage, or other defects the caliper should be replaced or repaired. Disc brake rotors CALIPERS ROTORS CALIPERS Visually inspect rotors for scoring, warping, cracks, bluing or heat spots or other damage or defects. If signs of damage or defects are found, the rotor(s) should be resurfaced or replaced in accordance with the vehicle manufacturer's recommended service procedure. FRONT REAR SYSTEM COMPONENTS Anchor plates Visually inspect anchor plates for worn or damaged slippers, damaged or dislodged guide pin boots or other defects. If signs of wear, damage or defects are found, the anchor plate(s) should be repaired or replaced. Anti–Lock Braking System (ABS) Your Regional Haul vehicle is equipped with an anti-lock braking system. For detailed service information, see the Peterbilt Maintenance Manual. All service work should – 186 – Y53-6033 Regional Haul (R05/10)

PREVENTIVE MAINTENANCE be performed by a qualified technician at an Authorized Service Center. The foundation brake system must be in proper working order to ensure the best ABS performance. CAUTION: Do not weld anywhere on the vehicle before detaching the ABS Electronic Control Unit (ECU) connector and all other electronic control units. Welding equipment can send an energy surge through electronic equipment and cause damage. Disconnect all ECUs before attaching welding equipment. CAUTION: Never detach the ECU connector with the ignition turned on. The connectors could arc and damage electronic equipment. Turn off the ignition before disconnecting any electronic equipment. Other precautions • Check ABS wiring harnesses periodically for chafing or other problems. No regular maintenance is required on the ABS components. BRAKE SYSTEM • During wheel balancing, dyno testing, or any time the ignition is on with part of the ABS disconnected, a failure code will be recorded. Consult with your Peterbilt Dealer or Authorized Service Center for information on clearing the failure code. If, due to operating conditions, a brake application causes either wheel on the same axle to begin skidding, wheel speed sensors immediately signal the anti-lock controller in the modulator assembly. The controller responds instantly by signaling the solenoids in the modulator which activate the air valves, reducing application pressure as needed to prevent the wheels from locking up. If this overriding correction is effective, application pressure is allowed to build up to the original input. Any malfunction of the anti-lock system on one or more axles will cause the system to fail-safe, and the panelmounted amber warning light will come on, indicating both a malfunction, and automatic shut-down of the system. If the foundation brake system is intact, the service brakes will continue to function normally, but without benefit of the anti-lock feature. Regional Haul (R05/10) Y53-6033 – 187 –

BRAKE SYSTEM<br />

PREVENTIVE MAINTENANCE<br />

Calipers<br />

BRAKE PADS<br />

ANCHOR<br />

PLATES<br />

BRAKE PADS<br />

Visually inspect calipers for brake fluid leakage, damaged<br />

or defective pistons or piston boots. If there is<br />

evidence of leakage, damage, or other defects the<br />

caliper should be replaced or repaired.<br />

Disc brake rotors<br />

CALIPERS<br />

ROTORS<br />

CALIPERS<br />

Visually inspect rotors for scoring, warping, cracks,<br />

bluing or heat spots or other damage or defects. If<br />

signs of damage or defects are found, the rotor(s)<br />

should be resurfaced or replaced in accordance with<br />

the vehicle manufacturer's recommended service procedure.<br />

FRONT<br />

REAR<br />

SYSTEM COMPONENTS<br />

Anchor plates<br />

Visually inspect anchor plates for worn or damaged<br />

slippers, damaged or dislodged guide pin boots or<br />

other defects. If signs of wear, damage or defects are<br />

found, the anchor plate(s) should be repaired or<br />

replaced.<br />

Anti–Lock Braking System (ABS)<br />

Your <strong>Regional</strong> <strong>Haul</strong> vehicle is equipped with an anti-lock<br />

braking system. For detailed service information, see the<br />

<strong>Peterbilt</strong> Maintenance <strong>Manual</strong>. All service work should<br />

– 186 – Y53-6033 <strong>Regional</strong> <strong>Haul</strong> (R05/10)

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