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Home >> BMW >> 2016 >> M5 Automatic DCT Trans >> Repair and Diagnosis >> Engine Mechanical >> Cooling System (Mechanical) >> Engine - Variable Valve Timing Control System (VANOS), Intake Plenum, Turbocharger, Water Pump, Thermostat, Coolant Lines, EGR Valve, EGR Cooler, Oxygen Sensors - Repair >> Water Pump >> N20 Engine >> 11 51 000 Removing and installing/replacing coolant pump (N20) AWD

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

WARNING: Risk of scalding.
Only perform this work after engine has cooled down.
IMPORTANT: If a coolant pump that has already been operated is reused, it must be filled with coolant after removal.
Mixture ratio, water: coolant = 1: 1
Protect plug connections against coolant and contamination.

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: 

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

Tightening torque 11 51 1AZ .

Fig 1: Identifying Screws On Bottom Of Coolant Pump
G09924971Courtesy 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
G09924976Courtesy 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
G09924972Courtesy 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
G09846162Courtesy 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
G09924974Courtesy 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.

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