Charge Air System, Checking For Leaks: Procedure

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

-- Loosen the hose clamps -1 and 2- and remove the air duct pipe -3-.

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-- Connect the :VAG1687/10 with the :VAG1687/13-2 to the turbocharger.

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-- Connect the hose -1- for the :VAG1687 to the adapter.

Prepare the :VAG1687 as follows:

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-- Pull the pressure regulating valve -2- upward and remove completely, close the valves -3 and 4-.

-- Connect the :VAG1687 to compressed air -1- with a commercially available adapter piece.

NOTE:

If there is water in the viewing glass, it must be drained through the drain plug -6-.

Pressure must not exceed 0.5 bar (7.2 psi)!

-- Open the valve -3-.

-- Set the pressure to 0.5 bar (7.2 psi) using the pressure control valve -2-.

-- Open the valve -4- and wait until the test circuit is filled. Regulate the pressure to 0.5 bar (7.2 psi) again if necessary.

-- Listen, feel and use commercially available leak detection spray or the :VAG1842 to check the charge air system for leaks.

NOTE:

A small quantity of air dissipates via the valves in the engine. For this reason a pressure retention test is not possible.

Information on the :VAG1842S . Refer to the Operating Instructions.

Release the pressure in the test circuit by pulling off the hose coupling before removing the adapter.

Assembling

Assembly is performed in reverse order of removal.