11 51 000 Removing and installing/renewing coolant pump (N63)

WARNING: This page is about a different car, the 2013 BMW 550i GT, 2012 BMW 550i GT, 2011 BMW 550i GT, and 2010 BMW 550i GT. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Risk of scalding!

Only perform this work after engine has cooled down.

Recycling

Catch and dispose of drained coolant in a suitable container.

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 intercooler EXPANSION TANK
Remove alternator drive belt . See 11 28 010 REPLACING DRIVE BELT FOR ALTERNATOR (N63) or 11 28 050 REPLACING A/C COMPRESSOR DRIVE BELT WITH BELT TENSIONER (N63) .

IMPORTANT: Risk of damage!

Coolant emerges when the coolant hoses are detached from the coolant thermostat and coolant pump.

Cover surrounding components and plug connections with suitable apparatus

Fig 1: Identifying Coolant Hose And Plug Connections

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: For purposes of clarity, the graphic shows the auxiliary water pump removed.

Remove plug connections (2 and 3).

Installation note:

Plug connections (2 and 3) must snap audibly into place!

Unlock snap fastener on coolant hose (1).

Detach coolant hose (1) and lay to one side.

Release screw (4).

Tightening torque 11 51 3AZ .

Detach pipe (3) and lay to one side.

Installation note:

Replace sealing ring.

Unlock snap fastener on coolant hose (5).

Detach coolant hose (5) and lay to one side.

Unfasten screws (2).

Tightening torque 11 51 1AZ .

Remove coolant pump (1) in upward direction with a tilting motion.

Installation note:

Replace gasket.

Fig 2: Identifying Coolant Pump Components

Courtesy of BMW OF NORTH AMERICA, INC.

If reusing the coolant pump:

If a coolant pump is reused, it must be mechanically rotated once (breakaway torque at pump gears).

One coolant pump rotation will be sufficient.

If replacing the coolant pump:

Release screws on coolant thermostat.

Tightening torque 11 53 1AZ .

Remove coolant thermostat.

Installation note:

Replace sealing ring.

Assemble engine.

Top up COOLANT .

VENTING INSTRUCTIONS must be observed without fail .