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Home >> Audi >> 2016 >> S5 Prestige, 2D Convertible >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 16 (Hydraulic Components - Brake System (Coupe)) >> 47 Hydraulic Components >> Diagnosis And Testing >> Check Valve, Checking

Check Valve, Checking

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Valve must allow air to flow in direction of arrow.

Valve must remain closed in opposite direction.

Observe correct installation position.

The arrow points to the vacuum pump.