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Home >> Audi >> 2014 >> S4 Premium Plus >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Brake System - Hydraulic Components (Sedan) (As Of 01.2014) >> 47 Hydraulic Components >> Brake Booster/Brake Master Cylinder >> Brake Fluid Reservoir, Removing And Installing >> Removing

Brake Fluid Reservoir, Removing And Installing: Removing

-- Remove the plenum chamber cover. Refer to PLENUM CHAMBER COVER, REMOVING AND INSTALLING .

-- Disconnect the connector from the Brake Fluid Level Warning Switch -F34-.

-- Remove the brake fluid reservoir cover over the brake fluid reservoir. Refer to BRAKE FLUID RESERVOIR COVER, REMOVING AND INSTALLING .

-- To protect against escaping brake fluid, place enough lint-free cloths in the area below the master brake cylinder.

-- Siphon as much brake fluid as possible using the Brake Charger/Bleeder Unit VAS5234 and Adapter VAS5234/1 from the brake fluid reservoir.

-- With manual transmissions, remove the clutch hydraulic line -5- from the brake fluid reservoir and seal it.

Fig 1: Identifying Brake Master Cylinder Components
GWWA47-10054Courtesy of AUDI OF AMERICA, LLC
WARNING:
  • Brake fluid must never come into contact with fluids containing mineral oils (oil, gas, cleaning solutions). Mineral oil damages the plugs and sleeves in the brake system.
  • Brake fluid is poisonous. NEVER siphon brake fluid with your mouth! Also due to its corrosive effect, brake fluid must not come into contact with paintwork.
  • Observe the disposal regulations.

-- Pull the lower locking pin out of the brake fluid reservoir.

-- Remove the brake fluid reservoir from the brake master cylinder.