Kenworth T170 2009 Instruction Manual
![Kenworth T170 2009 Truck manual cover](/images/QxzEmBzQvtoGoWjYWVjYqrrF/thumbs/thumb175x175.webp)
The recommended oil for the Kenworth T170 2009 is a high-quality 15W-40 diesel engine oil that meets or exceeds the API CJ-4 specification.
It is recommended to inspect the air filter every 15,000 miles and replace it every 30,000 miles, or sooner if driving in dusty environments.
The recommended tire pressure varies by tire type and load, but generally, front tires should be inflated to 100 psi and rear tires to 95 psi. Always refer to the tire manufacturer's specifications and the vehicle's manual.
Check the coolant level and ensure there are no leaks. Inspect the radiator and hoses for blockages or damage. Verify the operation of the thermostat and water pump. If the problem persists, consult a professional mechanic.
Transmission fluid and filter should be changed every 100,000 miles or as specified in the vehicle's maintenance manual. Regular inspections and fluid level checks are recommended.
To reset the service light, turn the ignition to the "on" position without starting the engine. Press and hold the reset button on the dashboard until the service light blinks and goes out. Consult the manual if the reset button is not apparent.
Start by ensuring the brake fluid reservoir is full. Begin bleeding at the wheel farthest from the master cylinder, typically the rear passenger side. Use a clear tube and a container to catch fluid, and have an assistant pump the brake pedal until clean fluid without air bubbles flows. Repeat for each wheel.
Maintain proper tire pressure, perform regular engine maintenance, use cruise control when appropriate, and minimize idling. Reducing unnecessary weight and using aerodynamic enhancements can also improve fuel efficiency.
Common electrical issues include blown fuses, faulty wiring, and dead batteries. Inspect fuses and replace any that are blown. Check wiring for frays or damage. Ensure battery connections are clean and tight. If issues persist, consult a professional electrician.
To replace the headlight bulb, first disconnect the battery for safety. Access the headlight assembly by removing the retaining screws. Carefully unplug the old bulb and replace it with a new one, ensuring not to touch the glass with bare hands. Reassemble the headlight and reconnect the battery.