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Home >> Mercedes Benz >> 2017 >> C300 Base, 2D Convertible >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Air Intake, Turbocharging - 205 Chassis >> Testing & Repair >> Remove/Install Charge Air Cooler, Water-Cooled >> Remove/Install Charge Air Cooler, Water-Cooled - AR09.41-P-6819MRA

Remove/Install Charge Air Cooler, Water-Cooled - AR09.41-P-6819MRA

Engine 274.9 in model 205 

Engine 274.9 in model 253 

G12935159Courtesy 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
  Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
REMOVINGINSTALLING Remove/install     
1 Remove upper engine cover INSTALLATION IMPORTANT : Only install upper engine cove after the leak test.  
2 Drain coolant from low-temperature circuit INSTALLATION IMPORTANT : Only install front and lower center engine compartment paneling after performing a leak test. AR09.41-P-6834LW 
3 Unclip purge line (8) from charge air cooler (4) and place to one side    
4 Remove coolant hoses (6, 7) from charge air cooler (4)   AR09.41-P-1311-01AL 
5 Remove vent line (1) from charge air cooler (4) SPECIAL TOOL Hose clamp pliers Fig 1
6 Release and disconnect electrical connection (10)    
7 Release and disconnect electrical connection (12)    
8 Unclip subharness (13) from mounting plate (11)    
9 Unclip engine management control unit with bracket and place to one side with connected lines    
10 Remove mounting plate (11)    
11 Remove screw/bolts (2, 3, 9) TORQUE SPECIFICATION Screw/bolt, water-cooled charge air cooler to bracket *BA09.41-P-1002-01U 
12 Remove charge air cooler (4) from throttle valve    
13 Remove charge air cooler (4) from boot (5) and take out    
14 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 buttoned-up and snug-fitting work clothes. Do not touch hot or rotating parts. AS00.00-Z-0005-01A
15 Perform an engine test run and check engine for proper operation and leaktightness    
16 Install front and center engine compartment paneling   AR61.20-P-1105LW
17 Install upper engine cover    
CHARGE AIR PIPE/CHARGE AIR COOLING

Number Designation Engine 274
BA09.41-P-1002-01U Screw/bolt, water-cooled charge air cooler to bracket Nm 9
Fig 1: Identifying Hose Clamp Pliers (003 589 03 37 00)
G12935160Courtesy of MERCEDES-BENZ USA