17 51 000 Checking Water Tightness of Cooling System

17 51 000 Checking Water Tightness Of Cooling System (N54, N57 D30 O/T 0)







Necessary preliminary tasks:
- Remove front underbody protection.







IMPORTANT:
Coat sealing rings of snap fasteners with lubricant.
Pressure pipes cannot be fitted without lubricant.







Release screws (1).
Tightening torque 17 10 2AZ.
Removing charge air cooler cover (2).

Only 740d:
Release coolant hoses from cover (2).







Unlock left charge air duct (1) on charge air cooler and detach.
Unlock charge air cooler (2) towards front from bracket.







Unlock right charge air duct (1) on charge air cooler and detach.
Unlock charge air cooler (2) towards front from bracket.







Unlock charge air cooler (1) towards front from brackets and remove towards bottom.

Installation note:
Charge air hoses must audibly snap into place.
Coat sealing rings of charge air hoses with lubricant.
Pressure pipes cannot be fitted without lubricant.







Check charge air system for leaks.
Assemble engine.