Vacuum, Creating With Hand Vacuum Pump

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Special tools and workshop equipment required

Hand Vacuum Pump:VAS6213

Fig 1: Hand Vacuum Pump VAS 6213
Courtesy of AUDI

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 from the connection -B- to the Brake Servo Tester:VAS6721 .

Fig 2: Identifying VAS 6721 Shut-Off Valves

Courtesy of AUDI

-- 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 13.78 psi) is displayed on the Brake Servo Tester:VAS6721 .

-- Then perform the relevant tests.