11 51 000 Removing and installing/replacing coolant pump (B48, B46)

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2019 MINI Cooper, 2018 MINI Cooper, 2017 MINI Cooper, 2016 MINI Cooper, and 2015 MINI Cooper. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Risk 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 ALTERNATOR BRACKET

Removal:

Release screws (1).

Remove coolant pump (2) from alternator bracket.

Fig 1: Coolant Pump And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Sealing bead (1) is applied to housing of coolant pump.

Installation note:

If the sealing bead (1) protrudes slightly and if the sealing bead (1) is not damaged, the coolant pump can be reinstalled.

If the sealing bead (1) is damaged, remove sealing bead (1) with a suitable tool and replace with SEALING COMPOUND 2.2 (Loctite 5970).

Fig 2: Sealing Bead

Courtesy of BMW OF NORTH AMERICA, INC.

Sealant height approximately 2 to 2.5 mm.

Position coolant pump (2) at alternator bracket.

Tighten down screws (1).

Tightening torque 11 51 1AZ .

Fig 3: Coolant Pump And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Required follow-up work:

Check engine for leak tightness