Servicing and maintenance works Engine cleaning 50 © 2009 z Clean the engine with a steam jet (maximum spray pressure 60 bar, maximum steam temper- ature 90 °C, distance at least 1m). z Warm up the engine so that the water residues evaporate. z Always clean the cooler and cooling fins from the exhaust air side to the fresh air side. z Spray the engine with cold cleaner and leave it for about 10 minutes to take effect. z Spray the engine clean with a high pressure wa- ter jet. z Warm up the engine so that the water residues evaporate. Cleaning with a high pressure cleaner Cleaning with cold cleaner For all cleaning work, make sure that no parts are damaged (e.g. bent cooler mesh).
Cover electrical/electronic parts and con- nections to clean the engine (e.g. control units, generator, solenoid valves etc.). Do not aim the water/steam jet directly at them. Allow engine to warm up. Only carry out cleaning work on the engine when it is not running! Remove the engine cover and cooling air cover if available and remount after clean- ing. The following causes of soiling make it necessary to clean the engine: z Blow dirt off or out. Always blow out the cooler and cooling fins from the exhaust air side to the fresh air side. z High dust content in the air. z Chaff and chopped straw in the area of the en- gine.
z Coolant leaks z Lubricating oil leakage z Fuel leaks Because of the different application conditions, cleaning depends on the degree of dirt contamina- tion. Cleaning with compressed air 6 Cleaning work General