Supercharger, Checking For Leaks

Special tools and workshop equipment required 

• Testing Unit For Turbocharger V.A.G 1687 with Adapter V.A.G 1687/10 V.A.G 1687/13-1, V.A.G 1687/13-2 and V.A.G 1687/13-3
• Engine and Transmission Holder VAS 6095 Ultrasonic Measuring Device V.A.G 1842

Procedure 

• Secure the supercharger to the VAS 6095 when performing the leakage test. Refer to SUPERCHARGER, SECURING TO ENGINE/TRANSMISSION HOLDER .
• Control valve control module -J808- installed, refer to Removal and Installation .

-- Attach V.A.G 1687/13-1 to the bottom of the supercharger housing.

Fig 1: Attaching V.A.G 1687/13-1 To Bottom Of Supercharger

Courtesy of AUDI OF AMERICA, LLC

-- Secure the hose connections with hose clamps.

-- Attach the V.A.G 1687/13-3 to the top of the supercharger housing.

Fig 2: Attaching V.A.G 1687/13-3 To Top Of Supercharger

Courtesy of AUDI OF AMERICA, LLC

-- Secure the hose connections with hose clamps.

-- Attach the V.A.G 1687/13-2 and V.A.G 1687/10 to the supercharger housing.

Fig 3: Attaching V.A.G 1687/13-2 And V.A.G 1687/10 To Supercharger

Courtesy of AUDI OF AMERICA, LLC

-- Secure the hose connections with hose clamps.

Prepare the V.A.G 1687 as follows:

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

Courtesy of AUDI OF AMERICA, LLC

-- Remove the pressure regulator valve -2- and close valves -3 and 4-.

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

-- Connect the V.A.G 1687 as illustrated, to the supercharger air using a commercially available intermediate piece -1-.

Fig 5: Connecting V.A.G 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 V.A.G 1687

Courtesy of AUDI OF AMERICA, LLC

-- Open the valve -3-.

-- Set the pressure to 0.5 bar 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 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 V.A.G 1842.