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Home >> Audi >> 2020 >> S6 Prestige >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Mechanical Components (Brake System) (2 Of 3) >> 46 Mechanical Components >> Description And Operation >> Front Brake Overview

Front Brake Overview

WARNING:
  • Always install all parts included in repair kit.
  • Brakes can be tested on any commercially available brake dynamometer provided the drive roller speed does not exceed 5.5 km/h (3.3 mph).
Fig 1: Front Brakes Overview
GWWUS46-968Courtesy of AUDI OF AMERICA, LLC
  1. Guide pin
    • 25 Nm (18 ft lb)
    • Bolt together with brake pad carrier
  2. Cap
    • Remove for access to guide pin
    • Lower cap with guide for brake pad wear indicator wiring
  3. Brake hose
    • Do not disconnect to replace brake pads
  4. Bracket
    • Bolt to brake caliper housing
    • Install harness connector for brake pad wear indicator
  5. Bolt
    • 25 Nm (18 ft lb)
  6. Harness connector
    • Disconnect when changing brake pads
  7. Brake line
    • 15 Nm (15 ft lb)
    • Install in brake caliper housing
    • Connect to brake hose; hold hex on brake hose fitting when tightening
  8. Serrated bolt
    • 125 Nm (92 ft lb)
    • Clean serrations under head when reusing
  9. Brake pads
    • Brake pad wear indicator light, if so equipped, lights up in instrument cluster when brake pads are worn
    • Replace in pairs FRONT BAKE PADS 
    • Thickness (new): 14 mm (0.6 in.)
  10. Brake pad carrier
    • Bolt to wheel bearing housing
  11. Brake disc
    • Replace in pairs only
    • Remove brake caliper before removing disc
    • Resurface uniformly on both sides when necessary, starting from thickness when new; make sure that thickness of resurfaced disc is sufficiently above wear limit
    • Diameter: 288 mm (11.3 in.)

      Ventilated disc:

    • Thickness: 25 mm (0.98 in.)
    • Wear limit: 23 mm (0.91 in.)
  12. Retaining spring
    • Install by engaging in both holes in brake caliper housing
  13. Brake caliper housing
    • Remove from brake pad carrier to replace brake pads