Checking supercharger for leaks: VW Touareg II (CGEA, CGFA, CJTA, CMKA, …)

🧭 Before you start

Fits: VW Touareg II (7P, 2010–2018)

• Special tools named: V.A.G 1687/13

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• For illustration purposes, the supercharger is shown without gearbox support.
• To turn the pressure regulating valve the knob must be pulled upwards.
• If pressure is set too high, it may result in damage.The pressure must not exceed 0.5 bar! — Adjust pressure to 0.5 bar with pressure control valve (2).
• How to use the ultrasonic tester V.A.G 1842operating instructionsBefore removing the adapter, depressurise the test circuit by pulling hose coupling.

🔧 Engine codes this applies to

📋 Procedure

1. V.A.G 1687/13-1 Secure at bottom of supercharger housing.
2. Secure hose connection with hose clips. [Note: For illustration purposes, the supercharger is shown without gearbox support.]
3. V.A.G 1687/13-3 Secure at top of supercharger housing.
4. Secure hose connection with hose clips.
5. Secure V.A.G 1687/13-2 with adapterV.A.G 1687/10 on supercharger housing.

6. Secure hose connection with hose clips.
7. Unscrew pressure control valve (2) completely, close valves (3) and (4). [Note: To turn the pressure regulating valve the knob must be pulled upwards.]
8. Connect tester for charge air systemsV.A.G 1687, as shown in diagram, to compressed air (1) and adapterV.A.G 1687/10.
9. If water is in inspection glass, open drain screw (6) and drain water.
10. Open valve (3).
11. ⚠ If pressure is set too high, it may result in damage.The pressure must not exceed 0.5 bar! — Adjust pressure to 0.5 bar with pressure control valve (2).
12. Open valve (4) and wait until test circuit is full. If necessary, adjust pressure to 0.5 bar.
13. Seal valve (3) and observe pressure gauge.
14. Check the charge air system for leaks by hearing, touching, with commercially available leak detector spray or ultrasonic testerV.A.G 1842. [Note: How to use the ultrasonic tester V.A.G 1842operating instructionsBefore removing the adapter, depressurise the test circuit by pulling hose coupling.]

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