Planned Maintenance - Prestart Check unit and associated work area to ensure that they are clean and free from obstructions Check paint condition; Air Intake System Wet type – Inspect air cleaner element and housing and change oil and clean or change element when needed Dry type – Inspect filter element and housing and clean or change element when needed Service crankcase breathers and air box drains as required Replace safety cleaners as needed Check air intakes, outlets, and emergency stop Check condition of ductwork and inspect louvers for proper operation during start-up operation Lubricate linkage when applicable; Cooling System Check coolant level, fill if needed, and record any amount added Check for coolant leaks Check coolant filter and change annually or as needed Check coolant heater/block heater for proper operation Check water-cooled and heat exchanger systems for leaks and proper operation Check water filter and change annually or as needed Check water heater for proper operation...