Remove/install left oxygen sensor upstream of catalytic converter - AR07.04-P-0081MMV

ENGINE 276.8 in MODEL 205 

Fig 1: Identifying Catalytic Converter Left Oxygen Sensor Upstream Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Switch off ignition and remove transmitter key
2	Remove lower engine compartment paneling		AR61.20-P-1105LW
3	Disconnect electrical connection for left oxygen sensor upstream of catalytic converter (G33x1)
4	Unclip electrical connection for left oxygen sensor upstream of catalytic converter (G3/3x1) out of retaining clips (3) and bracket
5	Remove left oxygen sensor upstream of catalytic converter (G3/3)	Coat thread with heat-resistant lubricant. Ensure that lines for oxygen sensor upstream of the catalytic converter G3/3) are routed correctly.
		Paste, hot lubrication 1 kg, DBL 6879.20	*BR00.45-Z-1005-06A
		Oxygen sensor upstream of catalytic converter	*BA14.00-P-1005-01A
		Box wrench bit	Fig 2
6	Install in the reverse order
7	Read out fault memory using the diagnostic system and clear if necessary
			AD00.00-P-2000-04B
	Risk of accident  from vehicle starting off by itself when engine running. Risk of injury  (bruises and burns) resulting from working on the engine while it is being started or when it is running.	Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
8	Carry out an engine test run and check exhaust system for leak tightness

OXYGEN SENSOR

Number	Designation		ENGINE 276
BA14.00-P-1005-01A	Oxygen sensor upstream of catalytic converter	Nm	50

Fig 2: Identifying Box Wrench Bit (000 589 71 03 00)

Courtesy of MERCEDES-BENZ USA

REPAIR MATERIALS

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