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Remove/install heated O2 sensor - AR07.52-P-5303CV

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ENGINE 272 in MODEL 204.05/25/95/06 

Fig 1: Identifying Heated O2 Sensor Components
G07068097Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
DANGER Risk of death  caused by vehicle slipping or toppling off the lifting platform. Align vehicle between columns of vehicle lift and position four support plates at vehicle lift support points specified by vehicle manufacturer. AS00.00-Z-0010-01A
1 Switch off ignition    
2 Remove air filter housing    
3 Remove lower engine compartment paneling Model 204.0/2  
4 Unclip electrical connector (G3/3x1, G3/4x1, G3/5x1 or G3/6x1) and electrical feed line for the respective oxygen sensor (G3/3, G3/4, G3/5 or G3/6) from retaining clamp on transmission    
5 Disconnect electrical connector (G3/3x1, G3/4x1, G3/5x1 or G3/6x1) for the respective oxygen sensor (G3/3, G3/4, G3/5 or G3/6) and remove oxygen sensor (G3/3, G3/4, G3/5 or G3/6) IMPORTANTInstallation:  Coat thread with paste.  
TORQUE SPECIFICATION *BA14.00-P-1002-01A 
SPECIAL TOOL Fig 2
Paste *BR00.45-Z-1005-06A 
6 Install in the reverse order    
7 Connect STAR DIAGNOSIS and read fault memory    
REFER TO SELF-DIAGNOSTIC SYSTEMS Connect STAR DIAGNOSIS and read out fault memory AD00.00-P-2000-04A
DANGER Risk of accident  caused by vehicle starting off by itself when engine is running. Risk of injury  caused by contusions and burns during starting procedure or when working near the engine as it is running Secure vehicle to prevent it from moving by itself.
Wear closed and snug-fitting work clothes.
Do not touch hot or rotating parts.
AS00.00-Z-0005-01A
8 Test run engine and check exhaust system for leaks
O2 SENSOR

Number Designation Engine 272
BA14.00-P-1002-01A O2 sensor on catalytic converter Nm 50
Fig 2: Identifying Box Wrench Bit (000 589 71 03 00)
G07068098Courtesy of MERCEDES-BENZ USA
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1005-06A Paste, hot lubrication 1 kg, DB supply specification 6879.20 A 000 989 76 51