17 13 020 Removing and installing/replacing intercooler expansion tank (S63)

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IMPORTANT: Risk of scalding!
Only perform this repair work after engine has cooled down.

Necessary preliminary tasks:

Follow NOTES FOR CARRYING OUT REPAIR WORK on the cooling system.
Drain charge air cooler coolant from expansion tank.
Remove acoustic cover

Release screws (1).

Tightening torque 17 10 4AZ .

Release coolant hoses (2) from expansion tank (3) and detach.

Installation note:

Replace faulty clamps.

Feed out expansion tank (3) and remove.

Fig 1: Identifying Expansion Tank, Coolant Hoses And Screws

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Assemble engine.

After completing repair work, top charge air cooler up with coolant.

Vent COOLING SYSTEM FOR CHARGE AIR COOLER .

Check cooling system for tightness.