32 41 435 Removing and installing/replacing ARS return line in wheel arch (N55/N57/N63)

WARNING: This page does not describe the selected car, but rather 18 other vehicles, including the 2015 BMW Alpina B7L xDrive, 2015 BMW Alpina B7 xDrive, 2015 BMW 750i xDrive, 2015 BMW 750Li xDrive, and 2015 BMW 740Li xDrive. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

32 1 270

WARNING:

DANGER OF POISONING if oil is ingested/absorbed through the skin!

RISK OF INJURY if oil comes into contact with eyes and skin!

IMPORTANT:

Adhere to the utmost cleanliness. Do not allow any dirt to enter the hydraulic system.

Do not draw off hydraulic fluid (risk of contamination).

Close off line connections with plugs 32 1 270

Recycling:

Catch and dispose of hydraulic fluid in a suitable collecting vessel.

Necessary preliminary tasks:

Remove FRONT RIGHT WHEEL ARCH COVER .
Remove UNDERBODY PROTECTION .
Remove STIFFENING PLATE
Remove right STEERING ASSEMBLY COVER .
Release front right UNDERBODY PANELLING .

IMPORTANT: Pressure lines must be closed off with suitable seal plugs 32 1 270 immediately after removal!

Release screw (1) for return line.

Fig 1: Identifying Return Line Mounting Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

NOTE: When tightening the screw connection (1), hold line (2) with pliers (3).
Non-compliance will result in damage to the line (2)!

Tightening torque 37 13 12AZ .

Fig 2: Applying Counter Support With Wrench (During Tightening Screw Connection)

Courtesy of BMW OF NORTH AMERICA, INC.

Undo holder (1) at front axle support.

Fig 3: Identifying Front Axle Support Holder

Courtesy of BMW OF NORTH AMERICA, INC.

Release bolt (1) on line flange, release holder (2) at front axle support and remove return line toward the rear.

Tightening torque 32 41 19AZ .

Fig 4: Identifying Line Flange Bolt And Holder

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT:

When assembling, make sure that in succession only the seal plugs of the line to be fitted are removed.

When fitting lines, do not tilt connectors (sealing rings!) and connect fully before screwing.

Do not replace sealing rings on hydraulic lines.

Replace affected line if sealing ring is damaged.

After installation:

Fill and bleed HYDRAULIC SYSTEM .
Check pipe connections for leaks.
Carry out START-UP DYNAMIC DRIVE OPERATION .