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Home >> Audi >> 2017 >> A4 Prestige >> Repair and Diagnosis (Single Page) >> Brakes >> Anti-Lock Brakes >> Hydraulic Brake Components >> 47 Hydraulic Components >> Hydraulic System >> Hydraulic System, Bleeding >> Hydraulic System, Bleeding With Brake Charger/Bleeding Unit >> Procedure

Hydraulic System, Bleeding With Brake Charger/Bleeding Unit: Procedure

TIP:

Make sure that the brake fluid reservoir is always filled, but not over the "MAX" mark.

-- Fill the brake fluid reservoir up to the "MAX" mark.

Fig 1: Brake Fluid Reservoir
GWWA47-10258Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Connect the Brake Filling and Bleeding Equipment:VAS6860  .

GWWA47-10262Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Attach the Brake Bleeder Adapter:VAS5234/1A  to the brake fluid reservoir.

-- Adjust the pressure direction on the Brake Charger/Bleeder Unit :VAS5234  . Refer to the Brake Charger/Bleeder Unit :VAS5234  Owner's Manual.

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

Fig 2: Identifying Protective Cap, Bleed Screw And Container Bleeder Hose
GWWA46-10203Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Connect the bleeder bottle hose -2-.

TIP:

Use a suitable bleeder hose. It must be seated tightly on the bleed screw so that no air can enter the brake system.

The front brake calipers each have two bleed screws.

Bleed the brake caliper at each bleed screw.