11 51 000 Removing and installing/replacing coolant pump (N54, N54T)

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: Aluminum screws/bolts must be replaced each time they are released .
Aluminum screws/bolts are permitted with and without color coding (blue).
For reliable identification:
Aluminum screws/bolts are not magnetic .
Jointing torque and angle of rotation must be observed without fail (risk of damage) .

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

Partially release anti-roll bar (all-wheel drive only)
Drain Coolant. See 17 00 008 DRAINING AND ADDING COOLANT (N54, N54T) .
Remove COOLANT THERMOSTAT .

Release coolant hose (1).

Disconnect plug connection (4).

Release screws (5).

Installation note:

Replace aluminum screws.

Fig 1: Identifying Coolant Hose, Plug Connection & Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Tightening torque: 11 51 1AZ .

Installation note:

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

One coolant pump rotation will be sufficient.

Assemble engine.

Bleeding Instructions must be observed without fail . See 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR WATERTIGHTNESS (N54) .