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

WARNING: This page is about a different variant/trim than selected.

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 . See 17 00 ... 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 . See 11 28 010 REPLACING ALTERNATOR DRIVE BELT (N62/N62TU) .

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: Locating Plug Connections

G04740322

Courtesy of BMW OF NORTH AMERICA, INC.

Remove vibration damper . See 11 23 010 REMOVING AND INSTALLING/REPLACING VIBRATION DAMPER (N62/N62TU) .

Release screws and remove water pump (1).

Fig 2: Locating Water Pump Screw

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 Adapter Sleeve And Sealing Faces

G04793827

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Clean sealing surfaces.

Replace sealing rings (1 and 2).

Fig 4: Identifying Sealing Rings And Sealing Surfaces

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 . See 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR WATER LEAKS (N52K) .