Electromechanical Power Steering Gear Overview

Fig 1: Exploded View Of Electro-Mechanical Steering Gear

Courtesy of AUDI OF AMERICA, LLC

1. Clamp
   • Always replace if removed
   • Use the CV joint boot clamp tool to tensions the clamp Fig 3
     NOTE:

     Do not open or bend the new clamp.

   • For the correct version, refer to the Parts Information.
2. Tie rod
   • 100 Nm
   • Removing and Installing, refer to TIE ROD 
   • Grease the joint with power steering gear grease.
3. Electromechanical Steering Gear
   • Removing and Installing, refer to STEERING GEAR 
   • Grease the steering rack with power steering gear grease. Note: there are different types of grease for the left and right. For the correct allocation, refer to the Parts Information.
   • Different versions, refer to the Parts Information.
4. Tie Rod End
   • Removing and installing, refer to TIE ROD END .
   • Check dust caps for damage and correct seating.
   • Check dimension. Refer to Fig 2.
5. Nut
   • 80 Nm
   • Counterhold on the tie rod end when loosening or tightening.
6. Spring Clamp
   • Always replace if removed.
   • Spring clamp, installing, refer to Installing .
7. Boot
   • Check for damage.
   • Always replace if removed.
   • Coat the inside of slits in the boot all the way around and evenly with power steering gear grease before installing. Refer to the Parts Information.
   • Check the seat for the boot on the steering gear for damage before installing. If the steering gear housing is damaged, replace the steering gear.
   • Must not be twisted when toe is being adjusted.
   • Make sure it is installed correctly. Refer to Installing .
   • Replacing, refer to BOOT .
8. Clamp
   • Always replace if removed.
   • Use the CV joint boot clamp tool to tensions the clamp. Refer to Fig 3.
     NOTE:

     Do not open or bend the new clamp.

   • For the correct version, refer to the Parts Information.
9. Tie Rod
   • 100 Nm
   • Removing and installing, refer to TIE ROD .
   • Grease the joint with power steering gear grease.
10. Tie Rod End
    • Removing and installing, refer to TIE ROD END .
    • Check dust caps for damage and correct seating.
    • Check dimension, refer to Fig 2.
11. Lock Nut
    • 80 Nm
    • Counterhold on the tie rod end when loosening or tightening.
12. Spring clamp
    • Always replace if removed.
    • Spring clamp, installing Installing .
13. Boot
    • Check for damage.
    • Always replace if removed.
    • Coat the inside of slits in the boot all the way around and evenly with power steering gear grease before installing. Refer to the Parts Information.
    • Check the seat for the boot on the steering gear for damage before installing. If the steering gear housing is damaged, replace the steering gear.
    • Must not be twisted when toe is being adjusted.
    • Make sure it is installed correctly. Refer to Installing .
    • Replacing, refer to BOOT .

Tie Rod End Check Dimension

Fig 2: Tie Rod End Check Dimension

Courtesy of AUDI OF AMERICA, LLC

• Place a steel ruler -2- on the tie rod end and push it all the up to the edge -arrow- of the tie rod end -1-.
• Replace the entire steering gear along with the tie rod and tie rod end if the check dimension -a- is <188 mm.

Tensioning the Inner Clamp

Fig 3: Tensioning Inner Clamp

Courtesy of AUDI OF AMERICA, LLC

-- Mount the CV joint boot clamp tool -1- as illustrated. Make sure that the jaws of the clamp tool are seated in the corners -arrows- of the clamp.

-- Tighten the clamp by turning the spindle using a torque wrench -2- (do not tilt the pliers).

• Use torque wrench -2- with a 5 to 50 Nm range (for example, :V.A.G 1331  ).
• make sure the spindle threads on the pliers -1- move freely. Grease with MoS₂ grease if necessary.
• If the thread is tight e.g. dirty, the required tensioning force for the hose clamp will not be achieved in spite of correct torque specification settings.

Outer Boot Assembly

Fig 4: Identifying Outer Boot Assembly Dimension -A-

Courtesy of AUDI OF AMERICA, LLC

• Dimension -a- 2 mm