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Home >> Audi >> 2016 >> S5 Prestige, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different car >> Section 1225 (Hydraulic Components) >> 47 Hydraulic Components >> Brake Booster Vacuum Supply >> Brake Booster Vacuum System, Checking >> Brake Servo Tester :Vas6721, Connecting

Brake Servo Tester :Vas6721, Connecting

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Special Tools And Workshop Equipment Required 

-- Remove the vacuum hose from the brake booster.

Pressing the brake pedal a few times beforehand makes it easier to remove the vacuum hose.

-- Connect the Brake Servo Tester:VAS6721  -see following illustrations-.

Fig 1: NO CONTENT
GWWN47-10228Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.
Item number Component Explanation
A Shut-Off Valve In Direction Toward The Vacuum Hose, The Check Valve And Vacuum Pump (If Equipped)
B Shut-off valve
  • Opening the Brake Servo Tester:VAS6721  makes it easier to remove.
  • Open to simulate an incorrect source
  • Connect the Hand Vacuum Pump:VAS 6213  .
C Shut-off valve Toward the brake booster

-- Connect the Brake Servo Tester:VAS6721  hose -A- too the vacuum hose and push the adapter -C- into the brake booster.

Fig 2: Connect The - VAS 6721- Hose -A- Too The Vacuum Hose And Push The Adapter -C- Into The Brake Booster.
GWWN47-10209Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.