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Home >> Mercedes Benz >> 2018 >> S450 Base >> Repair and Diagnosis >> Hybrid/Electric Powertrain >> Cooling Systems >> Engine Cooling System - 222 Chassis (1 Of 2) >> Testing & Repair >> Remove/Install Coolant Circuit Vent Line Of Right Turbocharger >> Remove/Install Coolant Circuit Vent Line Of Right Turbocharger - AR20.20-P-1201MNM

Remove/Install Coolant Circuit Vent Line Of Right Turbocharger - AR20.20-P-1201MNM

Engine 177 In Model 217, 222 

G15362571Courtesy of MERCEDES-BENZ USA
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 pressure. Do not pour coolant into beverage containers. Wear protective gloves, protective clothing and safety glasses. AS20.00-Z-0001-01A 
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
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 Drain off coolant   AR20.00-P-1142MNL 
    INSTALLATION IMPORTANT:  Only install upper engine cover after the leak test.  
2 Remove cylinder 1+2 ignition coil (T4)   AR15.12-P-2009MNM
3 Remove heat shield from right turbocharger (3)   AR09.40-P-6027-00MNM
    TORQUE SPECIFICATION Pipe for inerting to engine *BA86.10-P-1002-03G 
    TORQUE SPECIFICATION Bolt, side heat shield to cylinder head cover *BA09.40-P-1007-01ZA 
4 Clean area of vent line (1) on right turbocharger (3) and cylinder head (4) Assembly cleaner *BR00.45-Z-1028-04A 
5 Remove screw/bolts (2) TORQUE SPECIFICATION Bolt, coolant line to turbocharger/cylinder head *BA09.40-P-1004-01ZA 
6 Remove vent line (1) and seal openings with suitable stop plugs INSTALLATION IMPORTANT:  Install new sealing rings.  
    SPECIAL TOOL Record plug Fig 1
7 Install in the reverse order    
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
8 Perform an engine test run and check engine for proper operation and leak tightness    
9 Install upper engine cover    
TURBOCHARGER

Number Designation Engine 177
BA09.40-P-1004-01ZA Bolt, coolant line to turbocharger/cylinder head Nm 9
TURBOCHARGER

Number Designation Engine 177
BA09.40-P-1007-01ZA Bolt, side heat shield to cylinder head cover Nm 9
INERTING

Number Designation Model 217 Model 222
BA86.10-P-1002-03G Pipe for inerting to engine M6 Screw   Nm 8 8
Nut Stage 1 Nm 8 8
Stage 2 ∠ 30 30
Fig 1: Identifying Record Plug (129 589 00 91 00)
G12078802Courtesy of MERCEDES-BENZ USA
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1028-04A Assembly cleaner A 000 986 56 01