6.1 Lubricating oil system Care and maintenance work Regulations for working on the lubricating oil system Checking the lubricating oil level Low oil level or overfilling lead to engi- ne damage! The oil level may only be checked with the engine in a horizontal position and switched off. If the engine is warm, switch off the en- gine and check the oil level after 5 mi- nutes. If the engine is cold you can check it ilmmediately. Quality/viscosity data ( 23 ) . Filling volume ( 51 ) . z Check engine lubricating oil level (see pre- vious chapter) Do not work when the engine is run- ning. Smoking and naked lights prohibited! Danger of scalding with hot lubricating oil!
Pay attention to utmost cleanliness when working on the lubricating oil sy- stem. Carefully clean the area around the af- fected parts. Blow damp areas dry with compressed air. Observe the safety regulations and na- tional specifications for handling oils. Dispose of leaking lubricating oil and filter elements properly. Do not allow used oil to seep into floor. Perform a trial run after all work. Pay attention to tightness and oil pressure and then check the engine oil level. For fuels with a sulphur content higher than 1% ask your responsible service representative. z Pull out the oil dipstick and wipe off with a lint-free, clean cloth. z Insert the oil dipstick as far as it goes.
z Pull out the oil dipstick and read off the oil le- vel. z The oil level must always be between the MIN and MAX marks! Fill up to the MAX mark if necessary. 6 Changing the lubricating oil z Run the engine warm (oil temperature > 80 °C). z Position the engine or vehicle so as to be le- vel. z Switch off the engine. z Place a collecting receptacle underneath the oil drain plug. z Unscrew the oil drain plug, drain oil. z Fit a new sealing ring to the oil drain plug, in- sert and tighten it (tightening torque 100 Nm). z Fill in oil. 29 Careful with hot oil. Danger of scal- ding!