Brake Servo Tester:VAS6721, CONNECTING

WARNING: This page is about a different car, the 2023 Volkswagen Atlas. However, it is still accessible from the selected car via links, so may be relevant.

-- 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 :VAS6721 -see the following illustrations-.

Fig 1: Connecting Brake Booster VAS6721

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Item number	Component	Explanation
A	Shut-off valve	In the direction toward the vacuum hose, the check valve and vacuum pump (if equipped)
B	Shut-off valve	Opening makes the Brake Servo Tester:VAS6721 removal easier. Open to simulate a malfunction source Connect the Hand Vacuum Pump:VAS6213 .
C	Shut-off valve	In the direction toward the brake booster

-- Connect the :VAS6721 hose -A- to 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.

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.