Remove/Install Turbocharger Oil Circuit Return Line - AR09.40-P-6043MNA

Engine 176 in model 463 

up to model year 2019 

Engine 177 in model 205 

Engine 178 in model 190 

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 o' the hazard area.	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
	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
	Remove/install
1	Remove left exhaust gas turbocharger (1).	When removing the left oil circuit return line (2).
		Engine 178.9 in model 190.381	AR09.40-P-6026MNJ
		Engine 176 in model 463 up to model year 2019 Engine 177 in model 205 Engine 178 in model 190 (except 190.381)	AR09.40-P-6026MNA
2	Remove right exhaust gas turbocharger (1).	When removing the right oil circuit return line (2).
		Engine 178.9 in model 190.381	AR09.40-P-6027MNJ
		Engine 176 in model 463 up to model year 2019 Engine 177 in model 205 Engine 178 in model 190 (except 190.381)	AR09.40-P-6027MNA
3	Remove screw (4) from the left or right exhaust gas turbocharger (1).	Bolt, oil return line to turbocharger/crankcase	*BA09.40-P-1003-01ZA
4.1	Remove screws (3) from the left or right exhaust gas turbocharger (1) and remove oil circuit return line (2) from the left or right exhaust gas turbocharger (1).	Engine 176 in model 463 up to model year 2019 Engine 177 in model 205 Engine 178 in model 190 (except 190.381)
	Specified engine oils for Cars, Vans (service) - Overview		BB00.40-P-0223-02A
		Replace oil circuit return line (2) and sealing ring. Coat sealing ring with engine oil.
		Bolt, oil return line to turbocharger/crankcase	*BA09.40-P-1003-01ZA
		Assembly tool	Fig 1
4.2	Remove screw (3) from the left or right exhaust gas turbocharger (1) and remove oil circuit return line (2) from the left or right exhaust gas turbocharger (1).	Engine 178.9 in model 190.381
	Specified engine oils for Cars, Vans (service) - Overview		BB00.40-P-0223-02A
		Replace oil circuit return line (2) and sealing ring. Coat sealing ring with engine oil.
		Bolt, oil return line to turbocharger/crankcase	*BA09.40-P-1003-01ZA
		Assembly tool	Fig 1
5	Install in the reverse order

Fig 1: Identifying Assembly Tool (000 589 93 63 00)

Courtesy of MERCEDES-BENZ USA