11 51 000 Removing and installing/replacing coolant pump (S63T 0)

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 . See 11 28 010 REPLACING DRIVE BELT FOR ALTERNATOR (S63T 0) and 11 28 050 REPLACING A/C COMPRESSOR DRIVE BELT WITH BELT TENSIONER (S63T 0) .

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 Coolant Pump Plug Connections With Screws

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE:

Illustration shows: N63 engine

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. See 17 00 005 DRAINING AND TOPPING UP COOLANT (S63 B44 T 0) and 17 00 009 CHECKING WATER TIGHTNESS OF COOLING SYSTEM (S63 B44 T 0) .