Supercharger, Checking For Leaks

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

Special tools and workshop equipment required

Turbo System Tester Kit VAG1687 with Turbo System Tester Kit - Adapter 10 VAG16877/10, VAG16877/13-1, VAG1687/13-2 and VAG16877/13-3

Procedure

Secure the supercharger for leak test on the Engine And Transmission Holder VAS6095. Refer to SUPERCHARGER, SECURING TO ENGINE/TRANSMISSION HOLDER .
Control Valve Control Unit -J808- installed. Refer to Control Valve Control Unit -J808-, REMOVING AND INSTALLING .

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

Fig 1: Attaching VAG 1687/13-1 To Bottom Of Supercharger

Courtesy of AUDI OF AMERICA, LLC

-- Secure the hose connections with hose clamps.

NOTE:

The supercharger is illustrated without the transmission holder.

-- Secure the VAG1687/13-3 on the top of the supercharger housing.

Fig 2: Attaching VAG 1687/13-3 To Top Of Supercharger

Courtesy of AUDI OF AMERICA, LLC

-- Secure the hose connections with hose clamps.

-- Secure the VAG1687/13-2with Turbo System Tester Kit - Adapter 10 VAG1687/10 to the supercharger housing.

Fig 3: Attaching VAG 1687/13-2 And VAG 1687/10 To Supercharger

Courtesy of AUDI OF AMERICA, LLC

-- Secure the hose connections with hose clamps.

Prepare the Turbo System Tester Kit VAG1687 as follows:

Fig 4: Connecting Pressurized Air Hose To Testing Unit For Turbo Charger VAG 1687

Courtesy of AUDI OF AMERICA, LLC

-- Fully turn out the pressure regulator valve -2- to the closed position and close the valves -3- and -4-.

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

-- Connect the Turbo System Tester Kit VAG1687 as illustrated, to the compressed air using a commercially available intermediate piece -1-.

Fig 5: Connecting VAG 1687 To Compressed Air Using Commercially Available Intermediate Piece -1-

Courtesy of AUDI OF AMERICA, LLC

-- 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 VAG 1687

Courtesy of AUDI OF AMERICA, LLC

-- Open the valve -3-.

CAUTION:

Damage could result if the pressure is set too high.

Pressure must not exceed 0.5 bar!

-- 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 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 Ultrasonic Tester VAG1842S.

NOTE:

For information on using the Ultrasonic Measuring Device VAG1842. Refer to the instruction manual.

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