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Remove/install air duct housing - AR09.20-P-0080EW

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ENGINES 272, 273 in MODEL 212 

Fig 1: Identifying Air Duct Housing Remove/Install Components
G09974845Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
NOTES Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
1 Remove air filter housing   AR09.10-P-1150EWS 
2 Remove hot film mass air flow sensor (B2/5)   AR07.07-P-1453EW
3 Detach hose (1) at centrifuge cover (2)    
4 Detach retaining clamp (3) on electric wiring harness from air duct housing (4)    
5 Push notch (4a) downwards and swing away air duct housing (4) below from throttle valve actuator (M16/6)    
6 Raise notch (4b) and remove air duct housing (4) from throttle valve actuator (M16/6)    
7 Detach hose (1) at air duct housing (4) Only when replacing air duct housing (4)    
8 Check seals (5) and replace if necessary    
9 Install in the reverse order