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Home >> Mercedes Benz >> 2019 >> A220 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 18 (Electrical Drive System -- 118 Chassis) >> Testing & Repair >> Open/Close Coolant Hose Coupling - AR08.50-P-0018-01EQ

Open/Close Coolant Hose Coupling - AR08.50-P-0018-01EQ

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Model 118, 177, 243, 247, 293, 910 

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
  1. Slide hook (2) of catch spring (3) to position (B).

    NOTES Never pull on the eyelet (1).

    Otherwise, the catch spring (3) will lose its pretension.

  2. Remove coolant line from component part.
  3. Check sealing ring for damage.

    If damage is visible.

    Replace coolant line.

    G07007940Courtesy of MERCEDES-BENZ USA

    Close clutch 

  4. Clean coolant line on the opposite side too.
  5. Slide hook (2) of catch spring (3) to position (A).
  6. Slide coolant line onto component part until the catch spring (3) engages.
  7. Check correct connection by pulling slightly on the coolant line.