11 51 000 Removing and installing/replacing coolant pump (S63)

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.

IMPORTANT: If a coolant pump which has already been operated is reused, it must be filled immediately after being removed with coolant (mixture ratio 1:1/water: coolant).

Installation note:

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

Necessary preliminary tasks:

Drain COOLANT .
Remove DRIVE BELT .

Unlock and detach plug connections (1).

Unlock and detach all coolant hoses on coolant pump.

Remove coolant feed pipe.

Tightening torque: 11 51 4AZ .

Unfasten screws (2).

Tightening torque 11 51 1AZ .

Lift out coolant pump with a swivelling movement.

Installation note:

Replace gasket .

Fig 1: Identifying Plug Connections And Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Graphic shows N63.

NOTE: Remove coolant thermostat from faulty coolant pump.

Convert coolant thermostat to new coolant pump.

Tightening torque 11 53 1AZ .

Assemble engine.

Vent COOLING SYSTEM and check for WATER LEAKS .