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
Turbo System Tester Kit - Adapter 13-2: VAG1687/13-2

Procedure

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

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

Fig 1: Identifying Adapter VAG 1687/13-1

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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.

Fig 2: Identifying Adapter VAG 1687/4

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-- Secure the hose connections with hose clamps.

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

Fig 3: Identifying Adapter VAG 1687/13-2 And Turbo System Tester Kit - Adapter 10 VAG 1687/10

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-- Secure the hose connections with hose clamps.

Prepare the : VAG1687 as follows:

Fig 4: Connecting Pressurized Air Hose To Testing Unit For Turbo Charger V.A.G 1687

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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-.

Fig 5: Identifying Turbo System Tester Kit VAG 1687

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

Fig 6: Connecting Pressurized Air Hose To Testing Unit For Turbo Charger V.A.G 1687

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-- Open the valve -3-.

CAUTION:

There is a risk of damage 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 regulating 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 required.

-- 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 removing the hose coupling before removing the adapter.