6.5 Intake system Care and maintenance work Regulations for working on the intake system Pay attention to utmost cleanliness when working on the intake system, close intake openings if necessa- ry.Dispose of old filter elements pro- perly. Maintenance indicators for dry air filter z The dry air filter is maintained according to a maintenance indicator or service gauge. z Maintenance is necessary when: when the engine is running, the yellow warning light of the maintenance indica- tor lights up. the red field (1) of the service gauge is completely visible. z After completion of the maintenance work push the reset button on the service gauge. The service gauge is ready for operation again.
Dry air filter Maintaining the dry air filter 6 Never clean filter element (3) with pe- trol or hot liquids! Renew damaged filter elements. z Maintain the filter element (3) according to the interval in the maintenance schedule (see chap. 5.1). z Lift up the clamping yoke (1). z Remove the filter hood (2) and pull out the filter element (3). z Filter element (3): blow out with dry compressed air (max. 5 bar) from the inside to the outside if soi- ling is only slight, renew if heavily soiled. 37 Do not work when the engine is run- ning.