4 Introduction DANGER Before starting a vehicle, always be seated in the driver's seat, place the transmission in neutral, apply the parking brakes, and push in the clutch pedal. Failure to follow these instructions could produce unexpected vehicle movement, which can result in serious personal injury or death. DANGER Before working on a vehicle, place the transmission in neutral, set the parking brakes, and block the wheels. Failure to follow these instructions could produce unexpected vehicle movement, which can result in serious personal injury or death.
DANGER Engine-driven components such as Power Take-Off (PTO) units, fans and fan belts, driveshafts and other related rotating assemblies, can be very dangerous. Do not work on or service engine-driven components unless the engine is shut down. Always keep body parts and loose clothing out of range of these powerful components to prevent serious personal injury. Be aware of PTO engagement or nonengagement status. Always disengage the PTO when not in use. DANGER Do not work under a vehicle that is supported only by a hydraulic jack. The hydraulic jack could fail suddenly and unexpectedly, resulting in severe personal injury or death.
Always use jackstands of adequate capacity to support the weight of the vehicle. WARNING When working on a vehicle by using wireless communication units, it is not always apparent to others that work is in progress on the vehicle. Certain activities, such as activation of certain vehicle components or systems, can cause injury to persons close to the vehicle who are unaware of the ongoing activities. Always keep a connected vehicle under close observation when using wireless communication units and inform other persons in the vicinity of the vehicle about the ongoing activities.
WARNING The temperature of the exhaust system components during the regeneration process can exceed 500°C (1000°F). Various factors (including ambient air temperature (AAT) and duration of the regeneration process) determine when these components will return to normal operating temperature after regeneration has completed. Be extremely careful around these hot components. Contact with these components can result in serious personal injury. CAUTION Before towing the vehicle, place the transmission in neutral and lift the rear wheels off the ground, or disconnect the driveline to avoid damage to the transmission during towing.