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Home >> Mercedes Benz >> 2025 >> S580 >> Repair and Diagnosis >> Engine Mechanical >> Exhaust >> Air Intake, Turbocharging (1 Of 2) -- 223 Chassis >> Testing & Repair >> Remove/Install Boost Pressure Control Flap Actuator - AR09.50-P-8845SB

Remove/Install Boost Pressure Control Flap Actuator - AR09.50-P-8845SB

Engine 256.9 in model 223 

G16190276Courtesy of MERCEDES-BENZ USA
G16190277Courtesy of MERCEDES-BENZ USA
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
Notice  Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
Notice  Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
REMOVINGINSTALLING Remove/install     
1 Remove wide open throttle bleed line (3) from fitting (4) and place to one side.   AR01.20-P-0020SB
2 Remove electric line from fitting (4) (arrow).    
3 Remove screws (2). INSTALLATION IMPORTANT : Replace screw/bolts (2).
TORQUE SPECIFICATION Screw, inlet nozzle to compressor wheel housing
*BA09.40-P-1025-02MRT 
4 Remove fitting (4). INSTALLATION IMPORTANT : Replace sealing ring.
SPECIAL TOOL Set of protective covers
Fig 1
    SPECIAL TOOL Assembly tool Fig 2
5 Release and disconnect the electrical connector (5).    
6 Remove retaining ring (7).    
7 Remove linkage (6) from actuator (1).    
8 Remove screws (8). INSTALLATION IMPORTANT : Replace screws (8).
TORQUE SPECIFICATION Screw, boost pressure regulator to exhaust gas turbocharger
*BA09.40-P-1023-02MRT 
9 Remove actuator (1).    
10 Install in the reverse order.    
11 Connect diagnostic system, read out fault memory and clear if necessary.    
REFER TO SELF-DIAGNOSTIC SYSTEMS     AD00.00-P-2000-06FR
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
12 Carry out engine test run and check engine for proper operation and leak tightness.    
TURBOCHARGER

Number Designation Engine 256
BA09.40-P-1023-02MRT Screw, boost pressure regulator to exhaust gas turbocharger Nm 9
TURBOCHARGER

Number Designation Engine 256
BA09.40-P-1025-02MRT Screw, inlet nozzle to compressor wheel housing Nm 9
Fig 1: Identifying Set Of Protective Covers (001 589 03 91 00)
G16190278Courtesy of MERCEDES-BENZ USA
Fig 2: Identifying Assembly Tool (000 589 93 63 00)
G16190279Courtesy of MERCEDES-BENZ USA