32 41 420 Replacing expansion hose part 1 (with ARS) (from vane pump)

WARNING: This page is about a different car, the 2013 BMW 550i GT, 2012 BMW 550i GT, 2011 BMW 550i GT, and 2010 BMW 550i GT. 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 seal plug. 32 1 270

Recycling

Catch and dispose of hydraulic fluid in a suitable expansion tank.

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

Necessary preliminary tasks

Remove left FRONT WHEEL .
Remove front UNDERBODY PROTECTION .
Remove left steering assembly COVER .
Release and disengage front ACTIVE STABILIZER .
Remove pressure lines . See 37 13 120 REMOVING AND INSTALLING/RENEWING PRESSURE LINE FOR VA1 SWIVEL MOTOR or 37 13 125 REMOVING AND REFITTING/REPLACING PRESSURE LINE ON SWIVEL MOTOR VA2 from active stabilizer bar.

Release screw connection (1) on power steering pump and detach line.

Tightening torque 37 13 10AZ.

Fig 1: Identifying Screw Connection On Power Steering Pump

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw connection for flange (1).

Tightening torque 37 14 8AZ.

Release line clip (2).

Fig 2: Identifying Pipe Holder And Flange Screw Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Release holder (1) and remove line.

Fig 3: Identifying Line 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 .