11 51 000 Removing and installing/replacing coolant pump (N55)

Recycling: 

Catch and dispose of drained coolant in a suitable container.

Observe country-specific waste disposal regulations.

Installation note: 

1. All screws, nuts, bolts and hose clamps removed during the repair must be replaced.
2. Retaining elements on chassis and suspension and steering parts must be replaced.

Necessary preliminary tasks: 

• Follow diagnosis instruction.
• Drain COOLANT .
• Remove ENGINE SPLASH GUARD .
• Remove FAN COWL .
• Release STEERING BOX (do not remove).

Disconnect plug connection (1).

Release coolant hose (2).

Installation note: 

Note installation hose clamps.

Tightening torque 11 53 9AZ .

Fig 1: Identifying Plug Connection And Coolant Hose

Courtesy of BMW OF NORTH AMERICA, INC.

Release coolant hose (1).

Installation note: 

Note installation hose clamps.

Tightening torque 11 53 5AZ .

Fig 2: Identifying Coolant Hose

Courtesy of BMW OF NORTH AMERICA, INC.

Follow assembly instructions: 

Installation note: 

Hose clamps (1) must be installed in the center of the marked area (see Fig 3).

Fig 3: Identifying Hose Clamp

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1).

Tightening torque 11 51 2AZ .

Installation note: 

Replace aluminum screws  .

Fig 4: Identifying Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Unclip cable (1) from bracket.

Release screw (2).

Tightening torque 11 51 2AZ .

Fig 5: Identifying Cable, Bracket, and Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note: 

If the electric coolant pump is reused, it must be rotated one turn due to the breakaway torque at the impeller.

Assemble engine.

Bleeding INSTRUCTIONS must be observed without fail.