Exhaust Emissions System - Crankcase Ventilation: Maintenance

Every 12, 000 miles, check condition of all hoses and clean flame arrestor (if equipped). Replace components as necessary.

Fig 1: 240 & 300 Series Crankcase Ventilation System

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Fig 2: 280 Series Crankcase Ventilation System

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Fig 3: 450 & 6.9 Crankcase Ventilation System

Courtesy of MERCEDES-BENZ USA