11 51 025 Removing and installing/replacing auxiliary water pump for electrical machine electronics (N55 Hybrid)

WARNING: Compliance with the following points is mandatory before beginning work:

Observe SAFETY INFORMATION for handling electric vehicles.

WARNING: Risk of scalding!
Only perform this work after engine has cooled down.

IMPORTANT: If a coolant pump that has already been operated is reused, it must be filled with coolant after removal.
Mixture ratio, water: coolant = 1: 1
Protect plug connections against coolant and contamination.

Recycling:

Catch and dispose of drained coolant in a suitable container.

Observe country-specific waste disposal regulations.

Necessary preliminary work:

Drain COOLANT for electrical machine electronics.

Release screw (2).

Tightening torque 17 10 5AZ .

Unlock locks (3) in direction of arrow. Pull off expansion tank upwards from carrier support, lay expansion tank to one side.

Fig 1: Removing Locks

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connection (1).

Unlock and detach coolant hose (2).

Release coolant hose (3).

Installation note:

Note installation hose clamps.

Tightening torque 11 53 9AZ .

Release nuts (4) and remove auxiliary water pump.

Fig 2: Identifying Coolant Hose And Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

BLEEDING INSTRUCTIONS must be observed without fail.