Installing the auxiliary coolant pump for the exhaust turbocharger

WARNING: High-voltage system .
The high-voltage system operates on the basis of hazardous, electrical voltage and high currents. Mortal hazard through electric shock!

All work on the high-voltage system may only be carried out by specially trained and technically experienced personnel.
For additional information see:
SAFETY INSTRUCTIONS ON HANDLING HYBRID CARS .
For additional information see:
NOTES ON REPAIR OF HIGH-VOLTAGE BATTERY UNIT .

Preliminary work

Refer to REMOVING THE ACOUSTIC COVER .
Refer to REMOVING THE CLEAN AIR PIPE WITH THE RESONATOR .
Refer to REMOVING CHARGE AIR LINE .
Refer to REMOVING THE ACOUSTIC COVER FOR THE ENGINE AT THE FRONT .
Refer to REMOVING THE FRONT UNDERBODY PROTECTION .
Refer to REMOVING THRUST FIELD .
Refer to DRAINING THE COOLANT FROM THE HIGH-TEMPERATURE COOLING SYSTEM .
Refer to CONNECTING THE COOLANT LINES FOR THE HIGH-TEMPERATURE COOLANT CIRCUIT .

NOTE: RISK OF DAMAGE
Non-visible damage to the coolant pump .
Forcibly removing, installing or dropping the coolant pump down will damage it .

Remove and install the coolant pump without damaging it and without applying external force.
Avoid impacts/knocks to the coolant pump (e.g. by tools, falling down, hard contact with base).
Replace coolant pump after being dropped or hard impacts/knocks.

NOTE: TECHNICAL INFORMATION
Make sure that the connections are locked correctly. The locks must engage audibly.

Feed in and position auxiliary coolant pump.
Feed in and install retainer (4) in the marked area.

Tighten nut (3) .

TIGHTENING TORQUE SPECIFICATION

Auxiliary coolant pump holder to cylinder head
M6	Tightening torque	8 Nm

Courtesy of BMW OF NORTH AMERICA, INC.

Feed in and install coolant line (2) .
Make sure that the coolant line (2) engages audibly.
Connect connectors (1) and lock.
Make sure the connector (1) engages audibly.