11 51 000 Removing and Installing/Replacing Water Pump (N73)

WARNING: This page is about a different car, the 2008 BMW 760Li and 2007 BMW 760Li. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Danger of scalding!
Only perform these tasks on an engine that has cooled down.

Recycling:

Catch and dispose of drained coolant.

Observe country-specific waste-disposal regulations.

Necessary preliminary tasks:

Remove fan cowl. See 17 11 031 REPLACING FAN COWL (N73)
Remove alternator drive belt. See 28 V-Ribbed Belt W.Tens
Remove A/C compressor drive belt. See 11 28 050 Replacing A/C Compressor Drive Belt (N73)
Remove vibration damper. See 11 23 010 Removing and Installing/Replacing Vibration Damper (N73)

Disconnect plug connections (1).

Release screws and remove belt pulley (2).

Unlock and detach both coolant hoses on water pump.

Fig 1: Identifying Plug Connections And Belt Pulley

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws and remove water pump (1).

Fig 2: Identifying Water Pump

Courtesy of BMW OF NORTH AMERICA, INC.

Clean sealing faces (1 and 2).

Installation:

Replace all gaskets and sealing rings, replace water pump if necessary.

Fig 3: Identifying Sealing Faces

Courtesy of BMW OF NORTH AMERICA, INC.

Replace connecting pipe (1) to alternator.

Installation:

Coat sealing surfaces of connecting pipe (1) with anti-friction rubber coating.

Fig 4: Identifying Hoses Pipe

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

When replacing water pump:

Convert coolant thermostat.

Convert water temperature sensor.

Assemble engine.

Check cooling system for leaks. See 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR LEAKS (N73)