Charge Air System, Checking For Leaks: Notes

WARNING: This page is about a different car, the 2012 Volkswagen Touareg and 2011 Volkswagen Touareg. However, it is still accessible from the selected car via links, so may be relevant.

Special Tools And Workshop Equipment Required

Turbo System Tester Kit:VAG1687
Turbo System Tester Kit - Adapter 3:VAG1687/3
Turbo System Tester Kit - Adapter 11:VAG1687/11
Turbo System Tester Kit - Adapter 16:VAG1687/16
Turbo System Tester Kit - Adapter 17 :VAG1687/17
Engine Bung Set:VAS6122

-- Loosen the spring clamps -arrows- and remove the air guide hose.

Fig 1: Air Guide Pipe, Remove/Install

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Seal the open connection on the turbocharger with a suitable tool from the :VAG1687 or the :VAS6122 .

-- Open the clamp to remove the bleeder hose.

Fig 2: Identifying Air Intake Connector & Air Duct Hose

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Seal the open connection with a suitable tool from the :VAG1687 or the :VAS6122 .

-- Loosen the hose clamp to remove the air duct hose -3-.

Fig 3: Identifying Oil Dipstick -1-, Bolts -2-, Hose Clamp -3- And Harness Connector -4-

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Connect a suitable adapter from the :VAG1687 to the air duct hose for the -J338-.

-- Connect the :VAG1687 to the adapter.

Prepare the :VAG1687 as follows:

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

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

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

The knob must face upward so the pressure regulating valve -2- can be turned.

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

NOTE:

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

-- 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 necessary.

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

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.