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Home >> Audi >> 2020 >> SQ8 Premium Plus >> Repair and Diagnosis >> External Pages >> Different car >> Section 258 (Brake System - Hydraulic Components (4MN)) >> 47 Hydraulic Components >> Vacuum System >> Vacuum System, Checking >> Vacuum, Creating With Hand Vacuum Pump

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 :VAS6213  instead of using the engine or a vacuum pump.

-- To do so, connect the :VAS6213  to the vacuum hose from the connection -B- to the :VAS6721  .

Fig 1: Identifying VAS 6721 Shut-Off Valves
GWWN47-10210Courtesy of AUDI

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

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

-- Then perform the relevant tests.