CONTROLS - Dash Switches starting engine. See EOAS system manufacturer's instruction manual for details. Fifth Wheel Slide Engine, Overspeed Air Shutdown (Test) 3 Turn switch on to “Unlock” Fifth Wheel Slide mechanism. The switch is guarded to protect you from accidentally activating or releasing the lock. CAUTION Only operate the under hood intake air switch when outside temperatures are below 32° F (0° C). Engaging the un- der hood air intake while temperatures are above freezing may result in en- gine damage. Hold down switch and increase engine rpm to test that Engine Overspeed Air Shutdown system functions correctly. A system reset will be required before restarting engine.
See EOAS system manufacturer's instruction manual for details. WARNING Do not move the fifth wheel while the tractor-trailer is in motion. Your load could shift suddenly, causing you to lose control of the vehicle. Never oper- ate the vehicle with the switch in the UNLOCK position. Always inspect the fifth wheel after you lock the switch to be sure the fifth wheel slide lock is en- gaged. Failure to comply may result in death, personal injury, equipment or property damage. Exhaust, Diesel Particulate Filter (DPF) Regeneration Engine, Under Hood Air Intake This switch opens a door in the engine air filter housing so that the air is taken from under the hood instead of outside air.
This switch can be useful when starting the vehicle in cold weather conditions. Manually controls the diesel particulate filter regeneration process. Refer to Engine Aftertreatment Controls Operator's Manual for additional information. 96 Y53-6047-2HEN (03/18)