11 51 000 Removing And Installing/Replacing Water Pump (N62/N62TU)

WARNING: This page does not describe the selected car, but rather 13 other vehicles, including the 2010 BMW 650i, 2009 BMW 650i, 2008 BMW 750i, 2008 BMW 750Li, and 2008 BMW 650i. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

Only carry out work on the cooling system after the engine has cooled down (risk of scalding ).

Follow INSTRUCTIONS FOR WORKING ON COOLING SYSTEM .

Necessary preliminary tasks:

Drain and dispose of coolant from radiator.
Remove fan cowl.
Remove ELECTRIC FAN .
Remove ALTERNATOR DRIVE BELT .

Unlock and detach plug connections (1).

Release screw and remove vacuum line holder.

Unlock and detach all coolant hoses on water pump.

Release screws and remove belt pulley (2).

Fig 1: Identifying Plug Connections And Belt Pulley Screws

G04740322

Courtesy of BMW OF NORTH AMERICA, INC.

Remove VIBRATION DAMPER .

Release screws and remove water pump (1).

Fig 2: Identifying Water Pump And Screws

G04740323

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Check adapter sleeve (1) for correct seating and damage; replace if necessary.

Clean sealing faces (2).

Fig 3: Identifying Sealing Faces

G04740324

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Clean sealing surfaces.

Replace sealing rings (1 and 2).

Fig 4: Identifying Sealing Rings

G04740325

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Replace both coolant pipes (1) and coat sealing surfaces with anti-friction rubber coating.

Thin coolant pipe (1) only with water-cooled alternator.

Fig 5: Identifying Coolant Pipe

G04740326

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE:

Remove coolant thermostat and coolant sensor of faulty water pump.

Check coolant thermostat and coolant sensor for damage and replace if necessary.

Install coolant thermostat and coolant sensor in new water pump.

Assemble engine.

VENT COOLING SYSTEM AND CHECK FOR LEAKS .