11 53 740 Removing and installing/replacing feed line (N54)

WARNING: This page is about a different car, the 2010 BMW X6, 2009 BMW X6, and 2008 BMW X6. 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 . See 17 00 005 DRAINING AND ADDING COOLANT (N54) .
Remove both catalytic exhaust-gas converters . See EXHAUST CATALYTIC CONVERTER .

Unfasten hose clip (1).

Tightening torque 11 51 4AZ , see 11 51 COOLANT PUMP WITH DRIVE

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

Fig 1: Identifying Hose Clip 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 , see THERMOSTAT AND CONNECT

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

Installation:

Replace O-rings.

Fig 2: Identifying Screws And Coolant 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 , see THERMOSTAT AND CONNECT

Remove feed line (2).

Installation:

Replace seal.

Fig 3: Identifying Screws And Feed Line

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Top up coolant . See 17 00 005 DRAINING AND ADDING COOLANT (N54) .

Venting instructions must be observed without fail . See 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR WATER LEAKS (N54) .