Installing the electromechanical steering gear

• In order to feed in the electromechanical steering gear (2)  , twist the rack (1)  with the torsion bar (3)  manually to the left by one revolution.

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• In order to avoid damages, cover the front subframe (1)  with a cloth.
• Position the electromechanical steering gear (2)  with the right side in the arrow direction (A)  .
• Feed the electromechanical steering gear (2)  in the arrow direction (B)  onto the front subframe.

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• Use the special tool 2 472 903 or 5 A47 6E6  for tightening the screws.

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• Position electromechanical steering gear (1)  on the front subframe.
• Replace screws (2)  .

  Parts:  Screws

• Screw in screws (2)  several turns by hand.

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• Tighten the screws of the electromechanical steering gear in the marked sequence from (1)  to (4)  .

  Be sure to follow the tightening sequence!

  Fig 1: Electromechanical Steering Gear Screws Tightening Sequence

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  TIGHTENING TORQUE SPECIFICATION
  
  

  Electromechanical steering gear to front subframe
  M12 Replace screws. The tightening sequence must strictly be followed and carried out on all screws at the same time! 1: left front 2: right rear 3: right front 4: rear left	Tightening torque	25 Nm
  	Unscrew all bolts	max. 90°
  	Tightening torque	100 Nm
  	Angle of rotation	90°

  NOTE: TECHNICAL INFORMATION 
  The universal joint can be mounted only in one position.
  The universal joint and the steering gear or the steering shaft at the bottom are encoded to one another.
  The clamping bolt must be positioned in the groove of the steering gear or the steering shaft.

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• Clean the screw threads to remove all remnants of screw lock agent.
• Slide the lower steering shaft (2)  onto the steering gear in the arrow direction.
• Replace the clamping bolt (1)  .

  Parts:  Clamping bolt

• Tighten the clamping bolt (1)  .

Follow-up work 

• Refer to INSTALLING LEFT AND RIGHT TIE ROD .
• Refer to INSTALLING BELLOWS FOR THE LEFT AND RIGHT STEERING GEAR .
• Refer to INSTALLING LEFT AND RIGHT TIE ROD ENDS .
• Refer to SECURING THE WIRING HARNESS FOR THE EPS ON THE FRONT AXLE SUPPORT .
• Refer to INSTALLING THE COVER OF THE STEERING ASSEMBLY ON THE LEFT AND RIGHT .
• Refer to INSTALLING THE STIFFENING PLATE .
• Refer to INSTALLING FRONT UNDERBODY PROTECTION .
• Refer to INSTALLING THE FRONT LEFT AND RIGHT WHEELS .
• Refer to CONNECTING NEGATIVE BATTERY CABLE OF THE SYSTEM BATTERY .
• Refer to PERFORM CHASSIS ALIGNMENT CHECK .
• Refer to REPLACEMENT: COMMISSIONING (INITIALIZATION) OF THE ELECTROMECHANICAL STEERING .