BMW 7 Series: Removing And Installing Active Front Steering Hydraulic Steering Gear

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.

Seal connections and lines immediately after removal with sealing plugs.

Necessary preliminary tasks

• Draw off and dispose of hydraulic fluid from fluid reservoir
• Remove underbody protection at front and rear.
• Remove COVER FOR STEERING ASSEMBLIES on left and right
• Remove TRACK ROD END ON BOTH SIDES FROM SWIVEL BEARING
• Remove lower section of steering spindle from steering gear
• Replacement only: Remove TRACK ROD END AT BOTH ENDS OF TRACK ROD
• Version with Dynamic Drive:
  • Remove front anti-roll bar.
  • Remove EXPANSION HOSE

Fig. 41: Identifying Marks On Steering Gear Box And Front Bolting Points

IMPORTANT: To avoid the need for axle/wheel alignment, mark position of steering gear (1) to front axle support (2).

To do so, draw a wide white stripe on the front bolting points (left and right) and apply a thin black marking (3) to this stripe.

Slacken nut (1).

Tightening torque 32 41 7AZ.

Release screw (2) on bracket.

Tightening torque 32 41 7AZ.

Release screw (3).

Tightening torque 32 00 1AZ.

Fig. 42: Identifying Front Axle Nut And Screws

Unlock plug connections (1) and disconnect.

Fig. 43: Identifying Plug Connections

Pull hydraulic steering gear towards front a little.

Unfasten plug connection (1) and disconnect.

Release screw (2) and remove lines (3) from hydraulic steering gear.

Tightening torque 32 41 5AZ.

Remove power steering gear in downward direction.

Fig. 44: Identifying Plug Connections And Hydraulic Steering Gear Screw And Fluid Lines

After installation

• Fill and bleed hydraulic system.
• Check pipe connections for leaks
• ADJUSTMENT FOR ACTIVE STEERING
• If necessary, carry out INITIAL DYNAMIC DRIVE OPERATION

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