11 51 000 Removing and installing/replacing water pump (S65)

Necessary preliminary tasks: 

• Remove FAN COWL WITH ELECTRONIC FAN .
• Remove RADIATOR .
• Remove A/C compressor drive belt.
• Remove upper IDLER PULLEY  for A/C compressor.

Release screw (1).

Remove alternator DRIVE BELT  .

Remove belt pulley (2).

Fig 1: Identifying Belt Pulley And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

To facilitate removal of the coolant pump, it is possible to insert M6 screws on left and right (see arrows).

Installation: 

Replace all sealing rings.

Fig 2: Inserting M6 Screws

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Assemble engine.

Vent COOLING SYSTEM and check for leaks.