BMW 7 Series: Replacing 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
• Remove TRACK ROD END AT BOTH ENDS OF TRACK ROD
• Version with Dynamic Drive (F01/F02/F07):
  • Remove FRONT ANTIROLL BAR
  • Remove EXPANSION HOSE

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. 68: Identifying Front Axle Nut And Screws

Unlock plug connections (1) and disconnect.

Fig. 69: 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. 70: Identifying Front Hydraulic Steering Gear Screw, Plug Connection And Fluid Lines

Replacement

Modify wiring harness on hydraulic steering gear.

Fig. 71: Identifying Hydraulic Steering Gear Wiring Harness

After installation

• Fill and bleed hydraulic system
• Check pipe connections for leaks
• Perform chassis alignment check
• ADJUSTMENT FOR ACTIVE STEERING
• If necessary, carry out INITIAL OPERATION FOR DYNAMIC DRIVE (F01/F02/F07)

REPLACING HYDRAULIC STEERING GEAR

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

Close off pipe connections with seal plugs.

Necessary preliminary work

• Draw off and dispose of hydraulic fluid from fluid reservoir
• Remove FRONT UNDERBODY PROTECTION
• Remove COVER FOR STEERING ASSEMBLIES on left and right
• Remove front stabilizer
• Remove TRACK ROD END ON BOTH SIDES FROM SWIVEL BEARING
• Remove TRACK ROD END AT BOTH ENDS OF TRACK ROD

Release screw (1) from engine compartment.

Tightening torque 32 31 2AZ.

Installation note:

Replace screw

Detach steering shaft lower section.

Fig. 72: Identifying Engine Compartment Screw

Release screw (1).

Tightening torque 32 41 5AZ.

Remove lines (2) from hydraulic steering gear.

Disconnect plug connection (3) and release cable strap.

Installation note: Replace sealing rings.

Fig. 73: Identifying Hydraulic Steering Gear Screw, Plug Connection And Fluid Lines

Release screws (1) and lay lines to one side.

Tightening torque 32 41 7AZ.

Unfasten screws (2).

Installation note: Replace bolts.

Tightening torque 32 00 1AZ.

Remove hydraulic steering gear in downward direction.

Fig. 74: Identifying Hydraulic Steering Gear Screws

After installation

• Fill and bleed hydraulic system
• Check pipe connections for leaks
• Perform CHASSIS/WHEEL ALIGNMENT CHECK
• If necessary, carry out INITIAL OPERATION FOR DYNAMIC DRIVE (F01/F02/F07)

TEACHING IN END STOP SOFTWARE FOR ELECTRIC STEERING GEAR (EPS)

NOTE: The end stop software must be taught in:

• after the steering gear is replaced
• after programming/coding

Connect vehicle to BMW diagnosis system.

Select and perform end stop under Service functions.

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