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Home >> Audi >> 2021 >> RS 6 Avant >> Repair and Diagnosis >> Suspension >> Front Suspension >> Front Suspension (Description - Assembly) (4A2 & 4A5) >> 40 Front Suspension >> Description And Operation >> SUBFRAME Assembly

SUBFRAME Assembly

GWWV40-1121Courtesy of AUDI OF AMERICA, LLC
  1. Subframe
    • Remove and install only as complete assembly
    • Check and adjust alignment of front wheels only if the two rear subframe bushings were loosened or removed, or if subframe assembly is replaced
  2. Washer
    • Always replace
    • Install with ribbed side up
  3. Bolt
    • Always replace
    • Drill out damaged inner thread and/or broken off bolts and repair with threaded insert KNM 12 x 1.5 mm
    • Tighten to 110 Nm (81 ft lb) plus additional 1/4-turn (90°)
  4. Base plate with tab
    • Always replace
    • Tab of base plate must engage in subframe assembly slot
  5. Bolts
    • Always replace
    • Tighten to 110 Nm (81 ft lb) plus additional 1/4-turn (90°)
    • Before tightening, make sure tabs of base plates engage in slots of subframe assembly
  6. Self-locking nut
    • Always replace
    • 40 Nm (30 ft lb)
  7. Transmission mount
    • With support bracket
  8. Left sidemember
  9. Self-locking nut
    • Always replace
    • 65 Nm (48 ft lb)
  10. Bolt
    • Always replace
    • Bolt head points toward rear axle
  11. Subframe mount, rear
    • Different versions for left and right sides, and depending on engine type
    • After removing and installing, check front wheel alignment
    • Align subframe assembly as described below before tightening bolt and washer assembly:

      -- Loosely install both mounts with bolt and washer assemblies.

      -- Loosely install subframe assembly with four mounting bolts.

      -- Align subframe assembly to be concentric with bolt and washer assemblies by sliding sideways in slots on rear subframe mount.

      -- Tighten all bolts to specified torque.

      -- Align vehicle.

  12. Bolt/washer assemblies
    • 40 Nm (30 ft lb) plus additional 1/4-turn (90°)