4-10.2Oil bath air cleaner. (Figure 4-9)Figure 4-9. Air Cleanera.Check must be made after the engine has been stopped for at least one hour so that the oil has hadtime to drip from filter (1) into bowl (2).b.Take down bowl (2) of the oil bath air cleaner. Remove sludge and clean bowl. Fill fresh motor oil intothe bowl up to the oil level mark.c.If the oil has already been changed several times or is heavily contaminated, unscrew filter (1) and washit thoroughly in diesel fuel after having removed bowl. Wait about 15 minutes before reassembling thefilter parts to give the fuel time to drip out.d.Replace filter element (3) if it is soiled or if it sits no longer close to the filter wall or to the central tube.e.Take care that the connection between air cleaner and intake pipe is perfectly tight. Check that therubber washer seal (4) is not defective.4-10.3EngineOil. Always change oil when the engine is still warm, as warm oil runs off more easily. To do this,screw off drain plug in the oil sump. After the old oil has drained off, screw in plug again and fill with fresh oil throughfiller neck in the cylinder head up to the upper dipstick mark.4-10.4Cleaningcoolingairstrainerandcoolingfins.a.Cleaning the cooling fins by dry means, e. g. a wire and, if possible, compressed air. It is advisable tostart blowing through the cooling fins from the exhaust side. If diesel fuel or a cold detergent is used forcleaning, it is important, after allowing for an adequate soaking-in period, to wash the engine parts witha powerful water jet.4-27
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