Overview - Suspension Strut And Upper Control Arm

Fig 1: Suspension Strut And Upper Control Arm Exploded View

Courtesy of AUDI OF AMERICA, LLC

1. Suspension Strut Dome
2. Nut
   • 30 Nm
   • Always replace if removed
   • Loosen and tighten diagonally
3. Bolt
   • 20 Nm
4. Tower Brace
   • Removing and installing. Refer to TOWER BRACE, REMOVING AND INSTALLING .
5. Bolt
   • 20 Nm
6. Bolt
   • 50 Nm +90° turn
   • Always replace if removed
   • Must be tightened in the control position. Refer to WHEEL BEARING IN CONTROL POSITION, LIFTING VEHICLES WITH AIR SUSPENSION or WHEEL BEARING IN CURB WEIGHT, LIFTING VEHICLES WITH COIL SPRING .
7. Upper Rear Control Arm
   • Removing and installing. Refer to UPPER CONTROL ARM, REMOVING AND INSTALLING .
   • For replacing the bonded rubber bushing for upper rear control arm. Refer to UPPER CONTROL ARM BEARING, REPLACING .
8. Bolt
   • Always replace if removed
9. Washer
10. Wheel Bearing Housing
11. Nut
    • 40 Nm
    • Always replace if removed
12. Coil Spring Shock Absorber
    • Removing and installing. Refer to SUSPENSION STRUT, REMOVING AND INSTALLING, COIL SPRING SHOCK ABSORBER .
    • Servicing. Refer to SUSPENSION STRUT, SERVICING, COIL SPRING SHOCK ABSORBER .
13. Upper Front Control Arm
    • Removing and installing. Refer to UPPER CONTROL ARM, REMOVING AND INSTALLING .
    • For replacing the bonded rubber bushing for upper front control arm. Refer to UPPER CONTROL ARM BEARING, REPLACING .
14. Bolt
    • 50 Nm +90° turn
    • Always replace if removed
    • Must be tightened in the control position. Refer to WHEEL BEARING IN CONTROL POSITION, LIFTING VEHICLES WITH AIR SUSPENSION or WHEEL BEARING IN CURB WEIGHT, LIFTING VEHICLES WITH COIL SPRING .
15. Bolt
    • Always replace if removed
16. Control Arm
17. Nut
    • 90 Nm +90° turn
    • Always replace if removed
    • Must be tightened in the control position. Refer to WHEEL BEARING IN CONTROL POSITION, LIFTING VEHICLES WITH AIR SUSPENSION
18. Shock Absorber Fork
    • Depending on the version with vibration damper. Refer to appropriate service information and the Parts information for the allocation.
    • Shock Absorber Fork, Removing and Installing SHOCK ABSORBER FORK, REMOVING AND INSTALLING 
19. Bolt
    • 40 Nm +180° turn
    • Always replace if removed
20. Coupling Rod
21. Bolt
    • 40 Nm +90° turn
    • Always replace if removed
    • Must be tightened in the control position. Refer to WHEEL BEARING IN CONTROL POSITION, LIFTING VEHICLES WITH AIR SUSPENSION or WHEEL BEARING IN CURB WEIGHT, LIFTING VEHICLES WITH COIL SPRING .
22. Nut
    • Always replace if removed
23. Air Spring Shock Absorber
    • Removing and installing. Refer to SUSPENSION STRUT, REMOVING AND INSTALLING, AIR SPRING DAMPER .
    • Servicing. Refer to SUSPENSION STRUT, SERVICING, AIR SPRING DAMPER .
    • There are different versions of the suspension. Refer to PRODUCTION CONTROL NUMBER (PR NUMBER) EXPLANATION .
24. Connecting Piece for the Air Line and the Residual Pressure Retaining Valve
    • Tightening specification: -Item 5-  SUSPENSION STRUT, SERVICING, AIR SPRING DAMPER
    • Only remove if vehicle is raised and air spring damper is unloaded (otherwise, there is a risk of injury from lowering vehicle)
    • If there are leaks. Refer to AIR LINE, SERVICING or AIR LINE, SERVICING .
    • Clean connections before loosening
    • Air escapes when connections are unscrewed
    • Protect threaded connection from dirt
    • Do not loosen the residual pressure retaining valve.

Courtesy of AUDI OF AMERICA, LLC

1. Vibration Damper

• Installation position: 'L' (left) and 'R' (right) label readable in the installation position at the top

2 -Nuts

• Replace after removing.
• Various tightening specifications
• For vibration damper :4G0 413 143  /:144  : 9 Nm
• For vibration damper :4G0 413 143A  /:144A  : 10 Nm +45°