Remove/Install Oil Separator - AR01.20-P-9750MNA

Engine 176 in model 463 

up to model year 2019 

Engine 177 in model 205 

Shown on engine 177 

Fig 1: Oil Separator Component Location - Model 205 With Engine 177

Courtesy of MERCEDES-BENZ USA

	Remove/install
1	Remove right or left charge-air distributor.	Engine 176 in model 463 up to model year 2019	AR09.41-P-8683MNF
		Engine 177 in model 205	AR09.41-P-8683MNA
2	Remove right charge air cooler.	When removal the right oil separator (1). Engine 176 in model 463 up to model year 2019	AR09.41-P-6828MNF
		Engine 177.### ## up to 081179 in model 205	AR09.41-P-6828MNA
		Engine 177.### ## as of 081179 in model 205	AR09.41-P-6828MNH
3	Remove left charge air cooler.	When removal the left oil separator (1). Engine 176 in model 463 up to model year 2019	AR09.41-P-6827MNF
		Engine 177.### ## up to 081179 in model 205	AR09.41-P-6827MNA
		Engine 177.### ## as of 081179 in model 205	AR09.41-P-6827MNH
4	Unclip bleed lines (8) at right oil separator (1) and holder.	When removal the right oil separator (1).
5	Unclip wiring harness at left oil separator (3).	Engine 176 in model 463 up to model year 2019 When removing the left oil separator (3).
6	Unclip bleed lines at ventilation of left oil separator (3).	Engine 176 in model 463 up to model year 2019 When removing the left oil separator (3).
7	Unscrew screw (7) and remove bleed lines (9) at boot (6).	When removal the right oil separator (1). Replace seals.
8	Remove bleed lines at boot of left exhaust gas turbocharger.	Engine 176 in model 463 up to model year 2019 When removing the left oil separator (3). Replace seals.
9	Open right or left clamp (5).
10	Remove screws (2).	replace screws (2). Bolt, oil separator to chain case cover	*BA01.20-P-1002-01J
11	Carefully pull out right or left oil separator (1, 3) together with bleed line (4) and boot (6) toward front and remove.	Bleed line (4) must not be removed from right or left oil separator (1, 3). The vent line (4) and the right or left oil separator (1, 3) will be damaged otherwise.
		: Observe installation position of the seals. Non-observance of the installation position of the seals leads to leakage. Replace all seals.
12	Install in the reverse order.
13	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	AP18.00-P-0101D
	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
14	Perform engine test run. While doing so, check engine for proper operation and leak tightness.