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

WARNING: This page is about a different variant/trim than selected.

WARNING: Risk of scalding!
Only perform this 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: Aluminium screws/bolts must be replaced each time they are released .
Aluminium screws/bolts are permitted with and without.
colour coding (blue).
For reliable identification:

Aluminium 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.
If fouling caused by engine oil is present, locate, clean and rectify the oil leakage.

Necessary preliminary tasks:

Remove COOLANT THERMOSTAT
Remove FRONT RIGHT CROSS PIECE

Release coolant hose (1).

Release coolant hose (3).

Disconnect plug connection (2).

Release screws (4).

Installation note:

Replace aluminium screws.

Fig 1: Identifying Coolant Pump Hoses, Plug Connection And Screws

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.

VENTING INSTRUCTIONS must be observed without fail .