Special tool VAG1687 Charge air system tester preliminary set-up

WARNING: This page is about a different car, the 2006 Audi A4, 2005 Audi A4, 2004 Audi A4, and 2003 Audi A4. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Special Tool VAG1687 Charge Air System Tester Preliminary Set-Up

Courtesy of VOLKSWAGEN UNITED STATES, INC.

Back off pressure regulator knob - 2 - of VAG1687 fully to protect gauge when shop air supply is applied to assembly.
Close valve - 3 - before gauge.
Close valve - 4 - after gauge.

The shop air supply line will later be attached to the inlet of VAG1687.

Remove female fitting from tester - arrow - and install an appropriate "male" air fitting that will connect to your shop air supply line (→ WARNING!).

WARNING: Use only approved air fittings to adapt shop air supply line to VAG 1687 tester.