Peterbilt Model 520 Body Builder User Manual
![Peterbilt Model 520 Truck Body Builder manual cover](/images/4c9a996f8a76061939e99203/thumbs/thumb175x175.webp)
The recommended maintenance schedule for the Peterbilt Model 520 includes regular checks every 10,000 miles or 6 months, whichever comes first. This includes oil changes, brake inspections, and checking fluid levels. Refer to the owner's manual for a detailed checklist.
Start by checking the battery connections and fuses. Use a multimeter to test the voltage levels. If the problem persists, consult the service manual or contact a professional technician specializing in Peterbilt trucks.
Common causes of engine overheating include low coolant levels, a faulty thermostat, or a malfunctioning radiator. Regularly check the coolant levels and inspect for leaks or blockages in the cooling system.
To perform a brake system check, inspect the brake pads for wear, check the brake fluid levels, and ensure the brake lines are free of leaks. Testing the responsiveness of the brakes during a slow drive is also recommended.
Ensure the antifreeze levels are adequate, check the battery condition, inspect the tires for proper tread and inflation, and use winter-grade oil. Consider using a block heater in extremely cold conditions.
To improve fuel efficiency, maintain regular engine tune-ups, ensure tires are properly inflated, reduce excess weight, and drive at steady speeds. Using cruise control on highways can also help.
Signs include unusual noises when shifting, slipping gears, delayed engagement, or transmission fluid leaks. Regularly check the transmission fluid level and condition as part of maintenance.
To reset the maintenance light, turn the ignition to the ON position without starting the engine, press and hold the reset button on the dashboard until the light flashes and turns off. Consult the owner's manual for specific instructions.
Use a mild detergent and water to wash the truck, rinsing thoroughly to remove any soap residue. Apply wax to protect the paint and use a suitable cleaner for the chrome parts. Regular cleaning helps prevent rust and corrosion.
Check for air leaks in the suspension system by listening for hissing sounds and apply soapy water to connections to identify leaks. Inspect the air lines and bags for damage. A professional mechanic should address any persistent issues.