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Home >> Audi >> 2020 >> Q5 Premium Plus >> Repair and Diagnosis >> External Pages >> Different car >> Section 45 (Hydraulic Components (Brake System)) >> 47 Hydraulic Components >> Brake Booster/Brake Master Cylinder >> Brake System Pressure Reservoir -VX70-, REMOVING AND INSTALLING >> Removing

Brake System Pressure Reservoir -VX70-, REMOVING AND INSTALLING: Removing

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

-- Insert the : VAG1869/2  between the brake pedal and driver seat. Pretension the brake pedal with the : VAG1869/2  to at least 60 mm.

Fig 1: Brake Pedal Depressor VAG 1869/2 Inserted Between Brake Pedal And Driver's Seat
GWWA44-0020Courtesy of AUDI OF AMERICA, LLC

By doing this, the valves in the brake master cylinder are closed and the brake fluid reservoir does not run empty.

-- Remove the protective cap -3- from the bleed screw -1- on the front brake caliper.

Fig 2: Identifying Protective Cap, Bleed Screw And Container Bleeder Hose
GWWA46-10203Courtesy of AUDI OF AMERICA, LLC

-- Connect the bleeder bottle hose -2- as shown.

WARNING:

Risk of skin irritation.

  • To prevent skin contact with brake fluid, wear chemical resistant safety gloves.

-- Open the bleed screw to reduce the pressure in the brake system.

-- Close the bleed screw and remove the bleeder bottle.

-- Repeat the procedure on a rear brake caliper.

-- Remove the union bolt -2- and remove the brake line from the pressure reservoir.

-- To prevent brake fluid from escaping, place enough lint-free cloths in the area under the pressure reservoir.

GWWA47-10344Courtesy of AUDI OF AMERICA, LLC

-- Immediately seal the open connection points with clean plugs from the Assembly Part Set: 5Q0 698 311  .

-- Disconnect the connector -3-.

-- Pull the Brake System Pressure Reservoir -VX70- -item 1- upward from the retaining pins and remove it.

-- If the Brake System Pressure Reservoir -VX70- needs to be replaced, remove the bolts -arrows- and the bracket.

GWWA47-10369Courtesy of AUDI OF AMERICA, LLC