Peterbilt Paccar Truck s Operator’s Manual

To check the transmission fluid level, park the truck on a level surface, allow the transmission to cool, and use the dipstick located on the transmission. Ensure the fluid is in the safe range indicated on the dipstick.
Common signs include unusual noises, difficulty shifting gears, slipping gears, and a burning smell. If you notice any of these, it's important to have the transmission inspected by a professional.
Transmission fluid should typically be changed every 150,000 miles, but it's best to consult the owner's manual or a certified technician for specific recommendations.
Paccar recommends using a high-quality synthetic transmission fluid that meets the specifications outlined in the truck’s manual. Always refer to the manual for approved fluid types.
Ensure the cooling system is functioning properly, check for low fluid levels, and inspect for any blockages in the transmission cooler lines. Consider consulting a technician if the issue persists.
Identify the source of the leak, which could be from the pan gasket, seals, or cooler lines. Tighten connections as needed or replace faulty components, and refill the fluid as necessary.
Disconnect the battery for about 15 minutes to reset the transmission control module. Reconnect the battery and allow the truck to idle for a few minutes to recalibrate.
To manually shift gears, use the manual mode on the gear selector. Shift up or down using the '+' or '-' buttons, ensuring the engine speed is appropriate for the gear selected.
Regular maintenance, including timely fluid changes and inspections, along with proper driving habits like smooth acceleration and maintaining optimal speeds, can improve fuel efficiency.
Regularly check and change transmission fluid, inspect for leaks, ensure proper cooling, and keep the transmission clean from debris and contaminants. Adhering to the maintenance schedule in the owner's manual is crucial.