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Home >> Mercedes Benz >> 2019 >> S450 Base >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Air Intake, Turbocharging - 222 Chassis (1 Of 2) >> Testing & Repair >> Remove/Install Turbocharger With Exhaust Manifold - AR09.40-P-6025LFA

Remove/Install Turbocharger With Exhaust Manifold - AR09.40-P-6025LFA

Engine 276.8 in model 217, 222 

Shown on engine 276.8 without code ME05 (HD 80KW-variants (INCLUDING PLUGIN)) on left ATL 

Fig 1: Turbocharger Components Location - Engine 276.8 In Model 222 (Left Side Shown Without Code ME05)
G15362265Courtesy of MERCEDES-BENZ USA

Shown on left ATL 

G15362266Courtesy of MERCEDES-BENZ USA
DANGER Risk of death  when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC) Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines. AS00.00-Z-0035-01A
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
WARNING 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
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 self-locking nuts and bolts   AH00.00-P-0001-01KOA
Notice  General information on vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system as well as personal protective equipment   AH00.00-Z-0300-01A
Notice  Notes on battery   AH54.10-P-0001-01A
REMOVINGINSTALLING Remove/install     
1 Perform enable for the high voltage on-board electrical system When removing the left ATL (1).  
    Engine 276.8 in model 222.163/173 AR54.10-P-1150LF
2 Drain off coolant   AR20.00-P-1142LF
3 Remove upper engine cover INSTALLATION IMPORTANT:  Only install upper engine cover after the leak test.  
4 Remove relevant air filter housing   AR09.10-P-1150LFA 
5 Unclip vacuum line at soundproofing on the rail Engine 276.8 in model 222.163/173 At left turbocharger (1).  
6 Remove soundproofing of rail    
7 Unscrew screw/bolt (3), remove line and place to side INSTALLATION IMPORTANT:  Install new sealing rings.  
8 Remove relevant charge air pipe (4)   AR09.41-P-8620LFA 
9 Disconnect electrical connection at left bypass air switchover valve (Y101/1) or right bypass air switchover valve    
10 Remove left line of inerting system at turbocharger (1) At left turbocharger (1).  
    Engine 276.8 in model 217, 222
with code 2U8 (Alternative refrigerant)
AR86.10-P-0319LF
11 Remove right line of inerting system at turbocharger (1) At right turbocharger (1).  
    Engine 276.8 in model 217, 222
with code 2U8 (Alternative refrigerant)
AR86.10-P-0419LF
12 Remove heat shields (14, 15, 16) from ATL (1)    
13 Unscrew screws/bolts (11, 18), remove coolant feed pipe (13) over relevant turbocharger (1) and place to side INSTALLATION IMPORTANT:  Replace seal.  
    TORQUE SPECIFICATION Bolt, coolant feed/return line to turbocharger *BA09.40-P-1008-01W 
14 Remove coolant return line (10) of left turbocharger (1) and place to side   AR20.20-P-7440LFA
    INSTALLATION IMPORTANT:  Replace seal.  
15 Remove oil return line (12) and oil feed line (17) of relevant turbocharger (1)   AR18.30-P-6850LFA
    INSTALLATION IMPORTANT:  Replace seal.  
16 Remove vacuum hose (9) at vacuum control unit (2) at relevant turbocharger (1)    
17 Remove catalytic converter bracket at transmission TORQUE SPECIFICATION Engine 276.8 in model 222 Bolt, front exhaust system bracket to transmission *BA49.10-P-1003-01AN 
    TORQUE SPECIFICATION Engine 276 in model 217 Bolt, front exhaust system bracket to transmission *BA49.10-P-1003-02D 
18 Disconnect flange connection between relevant turbocharger (1) and exhaust pipe; to do this, open clamp (6) INSTALLATION IMPORTANT:  Replace clamp (6) and seal.  
    INSTALLATION IMPORTANT:  Insert dowel pin on intermediate piece between turbocharger (1) and exhaust system into notch on turbocharger (1). After screwing down the clamp (6) using the prescribed torque there should be no further gap on the clamp lock.  
    TORQUE SPECIFICATION Engine 276.8 in model 222 Bolt, clamp for front/center/rear exhaust system *BA49.10-P-1006-01AN 
    TORQUE SPECIFICATION Engine 276 in model 217 Bolt, clamp for front/center/rear exhaust system *BA49.10-P-1006-02D 
19 Unscrew nuts (7) of relevant turbocharger (1) at cylinder head, and remove peg board INSTALLATION IMPORTANT:  Tighten nuts (7) from the inside to the outside.  
    TORQUE SPECIFICATION Engine 276.8 in model 217, 222Nut, turbocharger peg board to cylinder head *BA09.40-P-1001-01W 
20 Tilt relevant turbocharger (1) out of terminal rail (8), and remove upwards INSTALLATION IMPORTANT:  Replace seal.  
21 Install in the reverse order    
22.1 Check oil level in engine and correct if necessary When reusing relevant turbocharger (1).  
REFER TO MAINTENANCE     AP18.00-P-1811MP
22.2 Perform engine oil and engine oil filter change When replacing relevant turbocharger (1).  
REFER TO MAINTENANCE     AP18.00-P-0101CWZ
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
23 Perform an engine test run and check engine for leaktightness    
24 Install upper engine cover    
TURBOCHARGER

Number Designation Engine 276.8
BA09.40-P-1001-01W Nut, turbocharger peg board to cylinder head M8 Nm 20
TURBOCHARGER

Number Designation Engine 276.8
BA09.40-P-1008-01W Bolt, coolant feed/return line to turbocharger Nm 9
EXHAUST SYSTEM

Number Designation Engine 276 in model 222
BA49.10-P-1003-01AN Bolt, front exhaust system bracket to transmission Stage 1 Nm 20
Stage 2 ∠° -
EXHAUST SYSTEM

Number Designation Engine 276 in model 217
BA49.10-P-1003-02D Bolt, front exhaust system bracket to transmission Stage 1 Nm 20
Stage 2 ∠° -
EXHAUST SYSTEM

Number Designation Engine 276 in model 222
BA49.10-P-1006-01AN Bolt, clamp for front/center/rear exhaust system M8 Nm 35
EXHAUST SYSTEM

Number Designation Engine 276 in model 217
BA49.10-P-1006-02D Bolt, clamp for front/center/rear exhaust system Nm 35