11 53 740 Removing and installing/replacing feed line

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2010 BMW 535xi, 2010 BMW 535i, 2009 BMW 535xi, 2009 BMW 535i, and 2008 BMW 535xi. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

Danger 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.

Necessary preliminary tasks:

Drain COOLANT .
Remove both catalytic exhaust-gas converters. See CONVERTER FOR CYLINDERS 1-3 and CONVERTER FOR CYLINDERS 4-6 .

Unfasten hose clip (1).

Tightening torque: 11 51 4AZ .

Detach coolant hose of feed line in direction of arrow from coolant pump (2).

Fig 1: Identifying Coolant Hose And Coolant Pump

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT:

Risk of damage!

Where necessary, to release the coolant feed lines (3 and 4), do not place pliers on the pipes.

Release screws (1 and 2).

Tightening torque: 11 53 10AZ .

If necessary, release coolant feed lines (3 and 4) with suitable pliers at connection.

Installation note:

Replace O-rings.

Fig 2: Identifying Screws And Feed Lines

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE:

For purposes of clarity, the graphic shows the released coolant feed lines removed.

Release screws (1).

Tightening torque: 11 53 3AZ .

Remove feed line (2).

Installation note:

Replace seal.

Fig 3: Identifying Screws And Feed Line

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Top up COOLANT .

VENTING INSTRUCTIONS must be observed without fail .