11 53 090 Removing and installing/replacing auxiliary water pump for exhaust turbocharger (N63 O1)

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WARNING: Risk of scalding.
Only perform repair work after engine has cooled down.

Recycling:

Catch and dispose of drained coolant in a suitable collecting vessel.

Observe country-specific waste disposal regulations.

Necessary preliminary tasks:

Remove intercooler EXPANSION TANK .

Unclip coolant hose (1) from bracket (3) and lay in direction of arrow to one side.

Unfasten screws (2).

Tightening torque 11 51 3AZ .

Fig 1: Identifying Coolant Hose, Bracket And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Risk of damage.
Coolant emerges when the coolant hoses are detached from the auxiliary water pump (3).
Cover surrounding components and plug connections with suitable apparatus

Release hose clamp (5) with a suitable tool.

Installation note:

Replace hose clamp (5) .

Fig 2: Identifying Coolant Hoses And Clamps

Courtesy of BMW OF NORTH AMERICA, INC.

Detach coolant hose (4) and lay to one side.

Release hose clamp (1) with a suitable tool.

Detach coolant hose (2) and lay to one side.

Disconnect plug connection (2).

Installation note:

plug connection (2) must snap audibly into place.

Lift out auxiliary water pump (1).

Release holder (3) from auxiliary water pump (1).

Fig 3: Identifying Auxiliary Water Pump, Holder And Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Top up COOLANT .