Supercharger, Checking For Leaks

Special tools and workshop equipment required

Turbo System Tester Kit : VAG1687 Turbo System Tester Kit Adapter 4 : VAG1687/4 , Turbo System Tester Kit - Adapter 10 :VAG1687/10 , Turbo System Tester Kit - Adapter 13-1:VAG1687/13-1 and Turbo System Tester Kit - Adapter 13-2 :VAG1687/13-2

Supercharger secured on the :VAS6095A for the leak test. Refer to SUPERCHARGER, SECURING TO ENGINE/TRANSMISSION HOLDER FOR REPAIR WORK .
Control Valve Control Unit -J808- is installed. Refer to Control Valve Control Unit -J808-, REMOVING AND INSTALLING .

-- Secure the :VAG1687/13-1 on the bottom of the supercharger housing.

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-- Secure the hose connections with hose clamps.

NOTE:

The supercharger is illustrated without the transmission holder.

-- Secure the :VAG1687/13-4 on the top of the supercharger housing.

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-- Secure the hose connections with hose clamps.

-- Secure the :VAG1687/13-2 with :VAG1687/10 to the supercharger housing.

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-- Secure the hose connections with hose clamps.

Prepare the :VAG1687 as follows:

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-- Completely remove the pressure regulating valve -2- and close the valves -3 and 4-.

Pull the knob in order to rotate the pressure regulating valve.

-- Connect the :VAG1687 as illustrated, to the compressed air using a commercially available intermediate piece -1-.

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-- If there is water in the viewing glass, open the water drain plug -6- and drain the water.

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-- Open the valve -3-.

CAUTION:

Damage could result if the pressure is set too high.

The pressure must not exceed 0.5 bar (7.2 psi)!

-- 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.

-- Closes the valve -3-.

The drop in pressure must not exceed 0.1 bar (1.45 psi) in 30 seconds.

-- Inspect the charge air system for poorly sealed areas by listening, feeling, using commercially available leak detection spray or by using the :VAG1842S .

NOTE:

Refer to the Owner's Manual for information on using the :VAG1842S .

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