Kenworth T680 2016 Instruction Manual

For optimal performance, regular maintenance should be carried out as follows: oil changes every 15,000 miles, brake inspections every 30,000 miles, and a thorough vehicle inspection every 50,000 miles. Always refer to the owner's manual for specific guidance.
Start by checking the coolant levels and look for leaks. Inspect the radiator for blockages and ensure the fan is operating correctly. If the problem persists, it may require a thermostat or water pump inspection.
After an oil change, turn the ignition to the "ON" position without starting the engine. Press and hold the trip reset button until the oil change light blinks and resets.
To enhance fuel efficiency, maintain proper tire pressure, reduce idling time, and keep up with regular engine maintenance. Consider using aerodynamic enhancements and driving at optimal speeds.
Brake squealing could be due to worn brake pads, glazed surfaces, or accumulated dust. Inspect and replace the brake pads if needed and clean all components thoroughly.
Consult the owner's manual to identify the specific warning lights. Address any maintenance issues immediately and, if necessary, use a diagnostic tool to check for error codes.
To replace the headlight bulb, remove the headlight assembly by unscrewing the retaining bolts. Disconnect the wiring harness, remove the old bulb, insert the new bulb securely, and reassemble the parts.
Common issues include refrigerant leaks, a faulty compressor, or a clogged filter. Check for leaks, ensure the compressor is functioning, and replace the filter regularly. Professional servicing may be required for complex problems.
Use a tire pressure gauge to check the pressure when tires are cold. Compare readings with the manufacturer's recommended PSI levels. Inflate or deflate tires as needed, and inspect for any damage or irregular wear.
To winterize your truck, check the antifreeze levels, inspect the battery, ensure the heater and defroster are working, and switch to winter-grade oil if necessary. Additionally, inspect and replace wiper blades and maintain tire traction.