SEAT Workshop Service and Repair Manuals

Cooling system seal: Check Check the tool and equipment equivalence table according to the applicability between Seat / VW / Audi / Skoda → Chapter Special tools and workshop equipment required

t  Cooling system leakage check -VAG 1687-, see equivalent → Anchor t  Adapter -V.A.G 1687/12-

Operation process –  remove the central sound proofing → Exterior body installation work; Rep. Gr.50

–  Remove the left charger air hose from the charge air pipe. To do this, lift the retaining clip -right arrow- slightly.

–  Attach the adaptor -1687/12- to the intake hose-1- and and fix it with a clamp. –  Attach the charge air system tester -V.A.G 1687- to the adapter.

Prepare the supercharger system tester -V.A.G 1687-, as described below: –  Completely unscrew the pressure regulation valve -2- and close the valves -3- and -4-. l  Make sure knob is pulled out before turning pressure control valve -2-. –  Using a commercially available connection piece, connect charge air system tester -V.A.G 1687- to compressed air -1-.

–  Attach the compressed air hose -1- (compressed air supply) to the supercharger system tester -V.A.G 1687-.   Note If there is water in the inspection hole, drain it through the drain screw -6-. –  Open valve -3-. –  Set the pressure to 0.5 bar using the pressure regulation valve -2-.   Caution The pressure must not exceed 0.5 bar! Excessive pressure may cause damage to the engine. –  Open the valve -4- and wait for the test circuit to be filled. If necessary reset the pressure to 0.5 bar. –  Check for leaks in the supercharger system by listening, feeling, using leak-detector spray or with the ultrasound measuring device -V.A.G 1842-.   Note t  Slight leaks on the intake side of the turbocharger are acceptable, as the intake hoses are not designed for working with positive pressure. t  A tiny amount of air escapes from the engine valves. Therefore the retained pressure cannot be checked. t  Use of the ultrasound measuring device -V.A.G 1842- → Instruction manual. t  If a leak is found, consult the notes on the supercharge system for the fitting work to be done → Chapter. t  Before removing the adaptor, depressurize the inspection circuit by releasing the coupling of the adaptor -1687/10-.