Remove/Install Left Turbocharger - AR09.40-P-6026MNA

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 

Courtesy of MERCEDES-BENZ USA

Shown on ENGINE 177 

Courtesy of MERCEDES-BENZ USA

Shown on ENGINE 177 

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

Courtesy of MERCEDES-BENZ USA

Shown on ENGINE 177 

Courtesy of MERCEDES-BENZ USA

Courtesy of MERCEDES-BENZ USA

Shown on engine 178 with code 598 (Gasoline particulate filter (GPF) with sensor system) 

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  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
	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 coolant		AH20.00-P-2080-01KOA
	Remove/install
1.1	Remove center and front bottom engine compartment lining.	Engine 177 in model 205 Engine 178 in model 190 (except 190.381)
		Engine 177 in model 205	AR61.20-P-1105LW
		Engine 178 in model 190 (except 190.381) Do not install center and front lower engine compartment lining until after leak test.	AR61.20-P-1105RG
1.2	Remove bottom engine compartment lining.	Engine 176 in model 463 up to model year 2019
		Engine 176 in model 463.234 up to model year 2019 with code ZQ0 (G 500 4x42 )	AR61.20-P-1105GWX
		Engine 176 in model 463 as of model year 2016 up to model year 2019 except code ZQ0 (G 500 4x42 ) Only install lower engine compartment paneling after leak test.	AR61.20-P-1105GW
2	Drain off low-temperature circuit coolant.	Engine 176 in model 463 as of model year 2016 up to model year 2019 except code ZQ0 (G 500 4x42 )	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 converter at separating point of 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 muffler.	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.	Engine 178 in model 190.377/378 Bolt, front reinforcement on frame floor assembly	*BA61.10-P-1001-01I
5	Remove lower holder of catalytic converters.	Engine 178 in model 190 (except 190.381) If installed.	AR49.10-P-5500MNB
6.1	Remove left 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 left intake air duct downstream of air filter.	Engine 178 in model 190 (except 190.381)	AR09.41-P-1311-01AL
7	Remove right 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 (2).	Make sure that the cover (2) is seated correctly.
9	Remove screws (19) and remove heat shield (20) upward.	Bolt, upper heat shield to bracket/side heat shield	*BA09.40-P-1006-01ZA
10	Unclip electric lines (6, 7, 8, 9) from heat shield (10).	Engine 177 in model 205
11	Remove bracket (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 bracket 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
14.1	Unclip electric lines (8, 14) from heat shield (21).	Engine 177 in model 205
14.2	Unclip electric line (8) from heat shield (21).	Engine 178 in model 190 (except 190.381)
14.3	Unclip electric line (14) from heat shield (21).	Engine 176 in model 463 up to model year 2019
15	Remove ignition coil (16).	Engine 178 in model 190 (except 190.381)	AR15.12-P-2008MNB
		Engine 176 in model 463 up to model year 2019 Engine 177 in model 205	AR15.12-P-2003MNA
16	Release and disconnect electrical connector of left gasoline particulate filter differential pressure sensor (15).	Engine 178 in model 190 (except 190.381) with code 598 (Gasoline particulate filter (OPF) with sensor system)
17	Remove screw (26).	Engine 178 in model 190 (except 190.381) with code 598 (Gasoline particulate filter (OPF) with sensor system) M6X1	*BA00.10-P-1002-04A
18	Remove screw (27) and place bracket (30) together with left gasoline particulate filter differential pressure sensor (15) and with connected pressure hoses to one side.	Engine 178 in model 190 (except 190.381) with code 598 (Gasoline particulate filter (OPF) with sensor system) M6X1	*BA00.10-P-1002-04A
19	Remove screws (22) and remove heat shield (21) upwards.	Bolt, side heat shield to cylinder head cover	*BA09.40-P-1007-01ZA
20	Remove boot (4) from left exhaust gas turbocharger (1) and place to one side.	Clamp, boot to exhaust gas turbocharger/air filter	*BA01.20-P-1003-01J
21	Remove vacuum hose (3) from left exhaust gas turbocharger (1).
22	Remove coolant return line (5).		AR20.20-P-1101MNA
23	Remove bracket of coolant feed pipe (23).		AR20.20-P-1100MNA
24	Remove coolant feed pipe (23) from left exhaust gas turbocharger (1) and from left cylinder head.		AR20.20-P-1100MNA
25	Remove upper low-temperature circuit expansion reservoir (13) and place to one side with lines connected.	Engine 176 in model 463 up to model year 2019	AR09.41-P-0001MNA
		Engine 177 in model 205	AR09.41-P-0050MNG
26	Remove charge air hose (24) from left exhaust gas turbocharger (1).
27	Remove left catalytic converter from left exhaust gas turbocharger (1).		AR09.40-P-6018-01MNA
		Observe alignment of clamp (25) between left exhaust gas turbocharger (1) and left catalytic converter.
		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 For two-piece clamp Engine 177 in model 205 For two-piece clamp Engine 178 in model 190 (except 190.381) For two-piece clamp Caulking bolt	Fig 2
28	Check design of clamp (25) between left exhaust gas turbocharger (1) and left catalytic converter.	If a one-piece clamp (25) is installed ↓ Replace clamp (25). If a two-piece clamp (25) is installed ↓ Replace nuts and bolts.
29	Remove right catalytic converter at right exhaust gas turbocharger.	Alignment of clamp between right exhaust gas turbocharger and right catalytic converter must be observed.	AR09.40-P-6018-01MNA
		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 For two-piece clamp Engine 177 in model 205 For two-piece clamp Engine 178 in model 190 (except 190.381) For two-piece clamp Caulking bolt	Fig 2
30	Design of clamp between right exhaust gas turbocharger and right catalytic converter must be checked.	If a one-piece clamp is installed, ↓ Replace clamp. If a two-piece clamp is installed, ↓ Replace nuts and bolts.
31	Remove clamp (17).	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	AR09.40-P-6017-01MNE
		Replace clamp (17) and position.
		In order to ensure that the right exhaust gas turbocharger and the left exhaust gas turbocharger (1) are parallel, the parallel gauge (01) must be flush with the contact surfaces (arrows).
		Bolt, turbocharger clamp to exhaust manifold	*BA09.40-P-1001-01ZA
		Parallel support	Fig 3
32	Remove left exhaust gas turbocharger (1) with oil return feed line (18) upwards.	One must ensure that the marking (29) on the oil return line (18) is flush with the crankcase. Leaks will occur otherwise on the oil return line (18).
		Replace sealing ring on left exhaust manifold.
33	Remove oil return feed line (18) at left exhaust gas turbocharger (1).		AR09.40-P-6043MNA
		Replace oil return line (18) with sealing rings (28).
34	Install in the reverse order.
	Check
35	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
36	Perform engine test run and check engine for leak tightness.
37.1	Install the center and front lower engine compartment paneling.	Engine 177 in model 205 Engine 178 in model 190 (except 190.381)
		Engine 177 in model 205	AR61.20-P-1105LW
		Engine 178 in model 190 (except 190.381)	AR61.20-P-1105RG
37.2	Install lower engine compartment lining.	Engine 176 in model 463 up to model year 2019
		Engine 176 in model 463.234 up to model year 2019 with code ZQ0 (G 500 4x42 )	AR61.20-P-1105GWX
		Engine 176 in model 463 as of model year 2016 up to model year 2019 except code ZQ0 (G 500 4x42 )	AR61.20-P-1105GW

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