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Remove/Install Wide Open Throttle Vent Line - AR01.20-P-0020SB

Engine 256.9 in model 223 

G16189452Courtesy of MERCEDES-BENZ USA

Shown on model 223 with code AA6 (PERFORMANCE-ENHANCED VARIANT 1) 

WARNING 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
CAUTION 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
Topical note  Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
REMOVINGINSTALLING Remove/install     
1 Remove engine air intake duct downstream of air filter housing.   AR09.10-P-8130SB
2 Remove noise insulation above cylinder head cover.    
3 Remove purge line (1) and bleed line (2) from bleed line (3).    
4 Remove bleed line (3) from oil separator (4).    
5.1 Remove bleed line (3) from check valve (5). Engine 256.9 in model 223
with code AA6 (POWER VARIANT UPRATED 1)
 
5.2 Remove bleed line (3) from charge air line. Engine 256.9 in model 223
except code AA6 (POWER VARIANT UPRATED 1)
 
6 Remove screw (6). TORQUE SPECIFICATION Bolt, breather adapter to exhaust gas turbocharger *BA01.20-P-1014-01L 
7 Remove bleed line (3).    
8 Seal exposed openings with suitable stop plugs. SPECIAL TOOL Record plug Fig 1
9 Install in the reverse order.    
INSPECT Check     
WARNING 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 hazard area. AS49.00-Z-0001-01A
WARNING 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
10 Perform engine test run. While doing so, check engine for proper operation and leak tightness.    
CRANKCASE VENTILATION, CYLINDER HEAD COVER

Number Designation Engine 256.9
BA01.20-P-1014-01L Bolt, breather adapter to exhaust gas turbocharger Nm 8
Fig 1: Identifying Record Plug (129 589 00 91 00)
G16145009Courtesy of MERCEDES-BENZ USA