32 13 060 Removing and installing / replacing power steering gear

WARNING: This page is about a different car, the 2005 BMW 645Ci and 2004 BMW 645Ci. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Adhere to the utmost cleanliness. Do not allow any dirt to enter the hydraulic system.
Seal off pipe connections with plugs.

Necessary preliminary tasks:

Move engine into installation position
Draw off and dispose off hydraulic fluid from fluid reservoir Observe country-specific waste-disposal regulations
Remove tie rod end on both sides from swivel bearing
Replacement only: Remove tie rod end at both ends of tie rod
Remove lower steering spindle from power steering gear

If necessary, remove heat shield from power steering gear.

Release banjo bolts (1, 4).

Version with Servotronic: Disconnect plug connection on Servotronic converter.

Disconnect pressure line (2) and return line (3) from power steering gear.

If necessary, remove hydraulic lines with bracket from power steering gear/front axle carrier.

Fig 1: Disconnecting Pressure Line And Return Line From Power Steering Gear

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Replacement only: Replace banjo bolt (A) for pressure line with banjo bolt with non-return valve (B).

Replace sealing rings.

Make sure hydraulic lines are laid without tension and with sufficient spacing to adjoining components.

Fig 2: Identifying Banjo Bolt

Courtesy of BMW OF NORTH AMERICA, INC.

Lower front axle support.

Remove left engine mount/mounting bracket from front axle carrier.

Release screw (1).

Release nuts (2) and remove screws towards bottom.

Fig 3: Removing Lower Front Axle Support

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Replace screws and self-locking nuts.

Version with active front steering:

Unlock and disconnect plugs (1...4).

Raise power steering gear and unclip wiring harness.

Fig 4: Raising Power Steering Gear And Unclip Wiring Harness

Courtesy of BMW OF NORTH AMERICA, INC.

Move power steering gear to right and remove towards rear.

After installation:

Fill and bleed hydraulic system, refer to 32 13 006 BLEEDING POWER STEERING UNIT .
Check pipe connections for leaks
Perform chassis alignment check
Carry out steering angle sensor adjustment/adjustment for active front steering, refer to 32 10 005 ADJUSTMENT FOR ACTIVE FRONT STEERING .
Version with Dynamic Drive: If necessary, carry out initial Dynamic Drive operation