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Home >> Audi >> 2020 >> S6 Prestige >> Repair and Diagnosis >> Brakes >> Mechanical - Hydraulic >> Hydraulic Components (Brake System) (2 Of 3) >> 47 Hydraulic Components >> Description And Operation >> Front Double-Piston Brake Caliper Overview, S4 And S6 >> Pressing pistons out of brake caliper housing individually with compressed air

Pressing pistons out of brake caliper housing individually with compressed air

Fig 1: Pressing Pistons Out Of Brake Caliper Housing
GWWA47-0002Courtesy of AUDI OF AMERICA, LLC
CAUTION:
  • Risk of accident! Apply pressure gradually. Guard against sudden release of the piston.
  • Place wooden board into the recess of the caliper housing to catch the pistons so that they are not damaged.

-- Force piston -b- out of the caliper bore.

-- Place wooden block -a- in housing so piston is not damaged.

NOTE:

Only one piston at a time can be pressed out; hold the other piston in the brake caliper housing with piston reset device.