11 51 000 Removing and installing/replacing coolant pump (N20) AWD

Recycling: 

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

Observe country-specific waste disposal regulations.

Installation note: 

1. All screws, nuts, bolts and hose clamps removed during the repair must be replaced.
2. Retaining elements on chassis and suspension and steering parts must be replaced.

Necessary preliminary tasks: 

• Follow diagnosis instruction.
• Remove BOTTOM CLEAN AIR PIPE .
• Drain COOLANT .
• Remove the RIGHT COOLANT HOSE .
• Remove RIGHT CHARGE-AIR DUCT .
• Remove STIFFENING PLATE .

Release screws (1) on the bottom of the coolant pump.

Tightening torque 11 51 1AZ .

Fig 1: Identifying Screws On Bottom Of Coolant Pump

Courtesy of BMW OF NORTH AMERICA, INC.

Loosen hose clamps (1).

Installation note: 

Note the installation position of the hose clamps.

Tightening torque 11 51 3AZ .

Fig 2: Identifying Hose Clamps

Courtesy of BMW OF NORTH AMERICA, INC.

Release coolant hoses (1) and (2).

Disconnect connector (4).

Release screw (3).

Remove coolant pump (5).

Fig 3: Identifying Coolant Hoses, Screw, Plug, And Coolant Pump

Courtesy of BMW OF NORTH AMERICA, INC.

Follow assembly instructions: 

Installation note: 

Hose clamps (1) must be installed in the center of the marked area.

Fig 4: Identifying Hose Clamp

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note: 

Attach coolant pump with screw (1).

Connector (2) must snap audibly into place.

Fig 5: Identifying Coolant Pump Screw And Connector

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note: 

If the electric coolant pump is reused, it must be rotated one turn due to the breakaway torque at the impeller.

Assemble engine.

BLEEDING INSTRUCTIONS must be observed without fail.