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Home >> Mercedes Benz >> 2007 >> S550 Base >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Air Intake, Turbo Charging -- S-Class (221) >> Testing & Repair >> Check charge air cooler - AR09.41-P-6800-01HH

Check charge air cooler - AR09.41-P-6800-01HH

ENGINE 275 in MODEL 215, 216, 220, 221, 230 Testing internal leakage via the air inlet trim 

If necessary after test:↓  
Replace charge air cooler. AR09.41-P-6817HH 
  1. Carefully tilt left and right charge air cooler (5/1, 5/2) and check, if coolant is flowing out of air intake support (1).

    NOTES Do not put connection fitting (5a) of coolant lines under tension when tilting left and right charge air cooler, otherwise leaks may occur.

  2. Check left and right charge air cooler through visual inspection in the air intake support (1) for traces of fluid and residues of coolant.

    Shown on right charge air cooler in Model 240 

    Fig 1: Checking Charge Air Cooler
    G07630332Courtesy of MERCEDES-BENZ USA