32 41 421 Replacing expansion hose part 2 (with ARS) (to the hydraulic steering gear)

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 expansion tank.

Necessary preliminary work:

Remove front UNDERBODY PROTECTION .
Remove front REINFORCEMENT PLATE .
Remove left steering assembly COVER .

IMPORTANT: Pressure line and connections must be provided with suitable seal plugs 32 1 270 immediately after removal!

Release screw connection (1) on the steering box.

Tightening torque 32 41 5AZ .

Detach line (2) from steering box.

Fig 1: Identifying Steering Box Screw Connection And Line

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1) from line flange.

Tightening torque 32 41 11AZ .

Release holder (2) and remove line towards the front.

Tightening torque 32 41 7AZ .

Fig 2: Identifying Line Flange Screw Connection 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 line connections for tightness.
Carry out INITIAL DYNAMIC DRIVE OPERATION .