Exhaust system, OM617 Removal and Installation of Air Filter 09-400 Removal and Installation of Air Filter Removal 1 Detach intake hose at air filter. 2 Remove air filter cover. 3 Unscrew vacuum line (2) for vacuum pump. On vehicles up to model year 1979 only. 4 Remove crankcase ventilation pipe (3). 5 Release hose clip (arrow) at intake line (4). 6 Unscrew fastening nuts inside air filter housing and withdraw air filter. Installation 7 Install in reverse order, making sure that rubber ring is correctly seated at turbocharger flange. 09.8-400/1 F 2 Poprzedni Removal and installation of injection timing device Nowsze Checking boost pressure of turbocharger