11 51 000 Removing And Installing/Replacing Water Pump (S54)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2006 BMW M3, 2005 BMW M3, 2004 BMW M3, 2003 BMW M3, and 2002 BMW M3. However, it is still accessible from the selected car via links, so may be relevant.

Release water pump belt pulley.

Remove alternator drive belt. Refer to 11 28 010 REPLACING ALTERNATOR DRIVE BELT (S54) .

Remove pulley from water pump.

Remove coolant thermostat. Refer to 11 53 000 REMOVING AND INSTALLING/REPLACING COOLANT THERMOSTAT (S54) .

Fig 1: Identifying Water Pump Pulley Retaining Bolts

G03118055

Courtesy of BMW OF NORTH AMERICA, INC.

E46 Only:

NOTE: Pipe (1) is also screwed on exhaust side to cylinder head.

Release screws and remove pipe (1).

Installation:

Fig 2: Releasing Screws And Removing Pipe

G03118056

Courtesy of BMW OF NORTH AMERICA, INC.

Water pump is secured with 5 screws to engine block.

Release screw and remove water pump

Fig 3: Releasing Screw And Removing Water Pump

G03118057

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Check dowel pins (1) for damage and correct installation position.

Keep sealing faces clean and free of oil. Replace seal (2).

Fig 4: View Of Seal

G03118058

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Replace sealing ring on pipe (1).

Fig 5: Locating Sealing Ring On Pipe

G03118059

Courtesy of BMW OF NORTH AMERICA, INC.

CAUTION: O-ring on pipe (1) can very easily be shorn off when water pump is fitted.

Coat sealing ring with water acting as antiseize agent and carefully fit water pump.