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Vacuum, Creating With Hand Vacuum Pump

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Special tools and workshop equipment required 

Procedure 

In certain situations, the vacuum can be created using a Hand Vacuum Pump: VAS6213  instead of using the engine or a vacuum pump.

-- To do so, connect the Hand Vacuum Pump: VAS6213  to the vacuum hose on the connection -B- on the Brake Servo Tester: VAS6721  .

Fig 1: Identifying VAS 6721 Shut-Off Valves
GWWN47-10210Courtesy of AUDI OF AMERICA, LLC

-- Open the shut-off valve -B-.

-- Create the vacuum using the Hand Vacuum Pump: VAS6213  until a vacuum between 600 and 950 mbar (8.7 and 13.77 psi) is displayed on the Brake Servo Tester: VAS6721  .

-- Then perform the relevant tests.