Remove/Install Left Catalytic Converter - AR49.20-P-0101MNO

Model 167 With Engine 176, 177 

Fig 1: Left Catalytic Converter Components Location - Model 167 With Engine 176, 177

Courtesy of MERCEDES-BENZ USA

Courtesy of MERCEDES-BENZ USA

Shown on engine 177.9 as of modification year 21/1 

Courtesy of MERCEDES-BENZ USA

	Risk of burn injuries  , suffocation and poisoning when working on the exhaust system and the components connected to it. Risk of suffocation and risk of poisoning caused by inhalation of gaseous and solid components of the exhaust. Risk of poisoning  caused by skin contact with solid components of the exhaust.	Wear protective clothing and safety glasses. Use the extraction system. Move people out of the danger zone.	AS49.00-Z-0001-01A
	Risk of injury  caused by scraping or cutting body parts on sharp vehicle parts	Always wear protective gloves when working on or near sharp and non-deburred vehicle parts. Deburr repair panels.	AS00.00-Z-0017-01A
Notice	Notes on avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
Notice	Notes on self-locking nuts and bolts		AH00.00-P-0001-01KOA
	Remove/install
1	Remove engine with front axle carrier.	Engine 176 in model 167	AR01.10-P-2500MNO
		Engine 177 in model 167	AR01.10-P-2500MNP
2	Release and disconnect electrical connector of the left lambda sensor upstream of the catalytic converter (G3/3).		AR07.04-P-0081MNO
3	Unclip electrical connector of the left lambda sensor downstream of the catalytic converter (G3/5) and release and disconnect.	Engine 177 in model 167	AR07.04-P-0082MNP
		Engine 176 in model 167	AR07.04-P-0082MNO
4	Remove lines of the gasoline particulate filter differential pressure sensor from the catalytic converter (1).	Engine 177 in model 167 with code 598 (Gasoline particulate filter (GPF) with sensor system)	AR49.20-P-3020MSC
5	Open clamp (2) and release catalytic converter (1) from exhaust gas turbocharger (3).	Replace clamp (2).
		Engine 177 in model 167Bolt, butterfly bracket to bracket	*BA49.10-P-1002-02E
		Engine 176 in model 167Screw/bolt, catalytic converter clamp to exhaust gas turbocharger	*BA49.10-P-1001-02W
6	Remove screws (4).	M6X1	*BA00.10-P-1002-04A
7	Remove the heat shield (5).
8	Loosen screws (6) until the bracket (7) can be moved.	M6X1	*BA00.10-P-1002-04A
9	Lift bracket (7) and push toward the rear.	The bores of the bracket (7) are slotted.
10	Remove screws (8).	Engine 177 in model 167Bolt, bracket for catalytic converter to catalytic converter/bracket	*BA49.10-P-1011-02E
		Engine 176 in model 167Bolt, holder for catalytic converter to transmission catalytic converter/holder	*BA49.10-P-1004-02W
11	Unscrew screws (9) and remove holder (10).	Engine 177 in model 167Bolt, butterfly bracket to bracket	*BA49.10-P-1002-02E
		Engine 176 in model 167Bolt, butterfly holder to bracket/catalytic converter	*BA49.10-P-1002-02W
12	Unscrew screws (11) from bracket (12) and remove catalytic converter (1).	Engine 177 in model 167Nut, bracket to transmission	*BA49.10-P-1004-02E
		Engine 176 in model 167Bolt, holder for catalytic converter to transmission catalytic converter/holder	*BA49.10-P-1004-02W
13	Remove seal (13).	Engine 177.9 in model 167as of modification year 21/1 Replace seal (13).
14	Install in the reverse order.
15	Check installation position and unobstructed movement of exhaust system and correct if necessary.