BMW 7 Owners & Service Manuals

BMW 7 Series: Removing And Installing 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.

Close off line connections with seal plugs.

Necessary preliminary work

  • Draw off and dispose of hydraulic fluid from oil reservoir
  • Remove FRONT UNDERBODY PROTECTION
  • Remove COVER FOR STEERING ASSEMBLIES on left and right
  • Remove front anti-roll bar
  • 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.

Steering Gear With Servo Unit
Fig. 51: 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.

Steering Gear With Servo Unit
Fig. 52: Identifying Hydraulic Steering Gear Screw, Plug Connection And Fluid Lines

Steering Gear With Servo Unit
Fig. 53: Identifying Marks On Steering Gear Box And Front Bolting Points

IMPORTANT: To avoid the need for axle/wheel alignment, mark position of steering box (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.

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.

Steering Gear With Servo Unit
Fig. 54: Identifying Hydraulic Steering Gear Screws

After Installation note

  • Fill and bleed hydraulic system
  • Check line connections for leak tightness
  • If necessary, carry out INITIAL OPERATION FOR DYNAMIC DRIVE

REMOVING AND INSTALLING/REPLACING EH CONVERTER FOR SERVOTRONIC

IMPORTANT: Adhere to the utmost cleanliness. Do not allow any dirt to enter the hydraulic system.

Necessary preliminary tasks

  • Remove REAR UNDERBODY PROTECTION

Disconnect plug connection (1).

Unfasten screws (2).

Remove EH converter.

Installation: Clean side return orifice with compressed air.

Align EH converter to opening in power steering gear, press by hand into power steering gear up to stop, insert screws (2) and tighten down.

Tightening torque 32 00 2AZ.

Steering Gear With Servo Unit
Fig. 55: Identifying EH Converter Plug Connection And Screws

After installation

  • Fill and bleed hydraulic system.

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