Remove/Install Right Turbocharger - AR09.40-P-6027MNA

Engine 176 in model 463 

up to model year 2019 

Engine 177 in model 205 

Engine 178 in model 190 (except 190.381) 

Shown on ENGINE 177 

Fig 1: Right Turbocharger Component Location - Model 205 With Engine 177

Courtesy of MERCEDES-BENZ USA

Shown on ENGINE 177 

Courtesy of MERCEDES-BENZ USA

Shown on ENGINE 177 

Courtesy of MERCEDES-BENZ USA

Shown on ENGINE 177 

Courtesy of MERCEDES-BENZ USA

Shown on ENGINE 177 

Courtesy of MERCEDES-BENZ USA

Courtesy of MERCEDES-BENZ USA

	Risk of injury  . Skin or eye injuries may result when handling hot or glowing objects.	Wear protective gloves, protective clothing and safety glasses, if necessary.	AS00.00-Z-0002-01A
	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 o' the danger zone.	AS49.00-Z-0001-01A
	Risk of injury  to skin and eyes suffering scalding from contact with hot coolantspray. Risk of poisoning  from swallowing coolant.	Do not open cooling system unless coolant temperature is below 90°C. Open cap slowly and release the overpressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses.	AS20.00-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
	Risk of injury  to skin and eyes due to handling of engine oil. Risk of poisoning  caused by swallowing engine oil	Wear protective gloves, protective clothing and safety glasses. Do not fill engine oil into beverage containers.	AS18.00-Z-0001-01A
Notice	Notes on self-locking nuts and bolts		AH00.00-P-0001-01KOA
Notice	Notes on avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
Notice	Notes on coolant		AH20.00-P-2080-01KOA
	Remove/install
1	Remove center and front sections of lower engine compartment lining.	Engine 178 in model 190 (except 190.381)
			AR61.20-P-1105RG
		Install front and center sections of lower engine compartment lining only after the leak test.
2	Drain off low-temperature circuit coolant.	Engine 176 in model 463 up to model year 2019	AR09.41-P-6834MNF
		Engine 178 in model 190 (except 190.381)	AR09.41-P-6834MNB
		Engine 177 in model 205	AR09.41-P-6834MNA
3.1	Disconnect left and right catalytic converters at separation points of the exhaust system.	Engine 177 in model 205 Engine 178 in model 190.377/378
		Engine 178 in model 190.377/378	AR49.10-P-7142MNB
		Engine 177 in model 205	AR49.10-P-7283MNA
3.2	Remove left and right rear mufflers.	Engine 176 in model 463 up to model year 2019	AR49.10-P-4951GW
3.3	Remove exhaust system.	Engine 178 in model 190.379/380/477/478/479/480	AR49.10-P-7142MNC
4	Remove front stiffener from frame floor assembly.	Engine 178 in model 190.377/378
		Bolt, front reinforcement on frame floor assembly	*BA61.10-P-1001-01I
5	Remove bottom holder of the catalytic converters from the catalytic converters.	Engine 178 in model 190 (except 190.381) If installed.	AR49.10-P-5500MNB
6.1	Remove right air filter housing.	Engine 176 in model 463 up to model year 2019 Engine 177 in model 205	AR09.10-P-1150MNA
6.2	Remove right intake air duct downstream of the air filter.	Engine 178 in model 190 (except 190.381)	AR09.41-P-1311-01AL
7	Remove left air filter housing.	Engine 176 in model 463 up to model year 2019 Engine 177 in model 205	AR09.10-P-1150MNA
8	Remove cover (5).	Pay attention to correct seating of the cover (5).
9	Remove screws (19) and remove heat shield (20) upwards.	Bolt, upper heat shield to bracket/side heat shield	*BA09.40-P-1006-01ZA
10	Unclip electric lines (6, 7, 8, 9) at heat shield (10).	Engine 177 in model 205
11	Remove holder (11) from crankcase.	Bolt, rear heat shield bracket to crankcase	*BA09.40-P-1005-01ZA
12	Remove heat shield (10) of the catalytic converters.	Engine 176 in model 463 up to model year 2019	AR49.10-P-5500MNF
		Engine 177 in model 205	AR49.10-P-5500MNA
13	Remove top holder of the catalytic converters.	Engine 176 in model 463 up to model year 2019	AR49.10-P-5500MNF
		Engine 178 in model 190 (except 190.381)	AR49.10-P-5500MNB
		Engine 177 in model 205	AR49.10-P-5500MNA
14	Remove boot (27) from right exhaust gas turbocharger (1) and place to one side.	Clamp, boot to exhaust gas turbocharger/air filter	*BA01.20-P-1003-01J
15	Remove vacuum hose (16) from right exhaust gas turbocharger (1).
16	Remove coolant return line (26) from right exhaust gas turbocharger (1).		AR20.20-P-1101MNA
17	Remove holder for coolant feed pipe (25).		AR20.20-P-1100MNA
18	Remove coolant feed pipe (25) from right exhaust gas turbocharger (1).		AR20.20-P-1100MNA
19	Remove oil feed line (24) from right exhaust gas turbocharger (1) and place to one side.		AR09.40-P-6040MNA
20	Remove coolant vent line (12) from right exhaust gas turbocharger (1).		AR20.20-P-1201MNA
21	Remove charge air hose (13) from right exhaust gas turbocharger (1).
22	Remove left catalytic converter from left exhaust gas turbocharger.		AR09.40-P-6018-01MNA
		The alignment of the clamp between the left exhaust gas turbocharger and the left catalytic converter must be observed.
		Engine 178 in model 190 (except 190.381) Clamp, front exhaust system to turbocharger	*BA49.10-P-1010-01AG
		Engine 176 in model 463 up to model year 2019Screw/bolt, catalytic converter clamp to exhaust gas turbocharger	*BA49.10-P-1001-02F
		Engine 177.9 in model 205Clamp, front exhaust system to turbocharger	*BA49.10-P-1001-02E
		Engine 176 in model 463 up to model year 2019 With two-piece clamp Engine 177 in model 205 With two-piece clamp Engine 178 in model 190 (except 190.381) With two-piece clamp Caulking bolt	Fig 2
23	Check design of clamp between left exhaust gas turbocharger and left catalytic converter.	If a one-piece clamp is installed, ↓ Replace clamp. If a two-piece clamp is installed, ↓ Replace nuts and screws.
24	Remove right catalytic converter from right exhaust gas turbocharger (1).		AR09.40-P-6018-01MNA
		Alignment of mounting clamp (14) between right exhaust gas turbocharger (1) and right catalytic converter must be observed.
		Engine 178 in model 190 (except 190.381) Clamp, front exhaust system to turbocharger	*BA49.10-P-1010-01AG
		Engine 176 in model 463 up to model year 2019Screw/bolt, catalytic converter clamp to exhaust gas turbocharger	*BA49.10-P-1001-02F
		Engine 177.9 in model 205Clamp, front exhaust system to turbocharger	*BA49.10-P-1001-02E
		Engine 176 in model 463 up to model year 2019 With two-piece clamp Engine 177 in model 205 With two-piece clamp Engine 178 in model 190 (except 190.381) With two-piece clamp Caulking bolt	Fig 2
25	Check design of mounting clamp (14) between right exhaust gas turbocharger (1) and right catalytic converter.	If a one-piece mounting clamp (14) is installed ↓ Replace mounting clamp (14). If a two-piece mounting clamp (14) is installed ↓ Replace nuts and screws.
26	Remove clamp (15).	Engine 176 in model 463 up to model year 2019 Engine 177 in model 205 Engine 178 in model 190 (except 190.381)
		Align clamp between exhaust gas turbocharger and exhaust manifold Engine 177 in model 205 Replace and position clamp (15). To ensure that the right exhaust gas turbocharger (1) is parallel to the left exhaust gas turbocharger, install parallel gauge (01) so that it is flush with contact surfaces (arrows).	AR09.40-P-6017-01MNE
		Bolt, turbocharger clamp to exhaust manifold	*BA09.40-P-1001-01ZA
		Parallel support	Fig 3
27	Remove right exhaust gas turbocharger (1) with oil return feed line (18) upwards.	Ensure that marking (29) on oil return feed line (18) is flush with crankcase. Oil return feed line (18) will otherwise be leaky Replace sealing ring on right exhaust manifold.
28	Remove oil return feed line (18) at right exhaust gas turbocharger (1).		AR09.40-P-6043MNA
		Replace oil return feed line (18) with sealing rings (28).
29	Install in the reverse order.
	Check
30	Check engine oil level and correct if necessary.
		Engine 176 in model 463.234/239/255 up to model year 2019	AP18.00-P-0101GGE
		Engine 177 in model 205 Engine 178 in model 190 (except 190.381)	AP18.00-P-1811MP
	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
31	Perform engine test run and check engine for leak tightness.
32	Install center and front sections of the engine compartment lining.	Engine 178 in model 190 (except 190.381)	AR61.20-P-1105RG

Fig 2: Identifying Caulking Bolt (103 589 01 39 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Parallel Support (168 589 03 21 00)

Courtesy of MERCEDES-BENZ USA