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Remove/install knock sensors - AR15.12-P-2184EW

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ENGINES 272, 273 in MODEL 212 

Fig 1: Knock Sensors Remove/Install Components
G09975063Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
NOTES Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
1 Remove resonance intake manifold Except model 212.057 AR09.20-P-1961EW
Model 212.057 AR09.20-P-1961EWD
2 Disconnect connector on knock sensor (A16/1 or A16/2)    
3 Remove bolt (1) and remove knock sensor (A16/1 or A16/2) TORQUE SPECIFICATION *BA15.10-P-1001-02B 
4 Install in the reverse order    
KNOCK SENSORS

Number Designation Engine 272 Engine 273
BA15.10-P-1001-02B Bolt, knock sensor to cylinder crankcase Nm 20 20