Brake Servo Tester: VAS6721, CONNECTING

WARNING: This page is about a different variant/trim than selected.

Special tools and workshop equipment required

-- Pull the vacuum hose -1- from the brake booster -2-.

Fig 1: Identifying Vacuum Hose

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

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

-- Connect the : VAS6721 -see following illustrations-.

Fig 2: Connecting Brake Booster VAS6721

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Position	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 : VAS6721 removal easier. Open to simulate a malfunction source Connect the : VAS6213 .
C	Shut-off valve	In the direction toward the brake booster

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

Fig 3: 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.

-- Push the adapter -C- into the brake booster.