SEAT Workshop Service and Repair Manuals > Leon Mk2 > Power unit | 4 cylinder TDI Engine, 2.0 l, 4 V with injector pump, mechanics | Exhaust turbocharger, G-charger | Supercharge system with turbocharger: repairs

Cooling system seal: check

Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter.

Special tools and workshop equipment required

t	Charge pressure system tester -V.A.G 1687-, see equivalent → Anchor

t	Adapter -V.A.G 1687/10-, see equivalent → Anchor

–	Remove the air filter intake hose-1-.

–	Attach the adaptor -1687/10- to the intake hose-1- and and fix it with a clamp.

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-.

Note

In order to unscrew the pressure regulation valve -2-, the rotary button must be completely upwards.

–	Attach the supercharge system checker -V.A.G 1687- to the adaptor -1687/10-.

–	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 valve -4- and wait until test circuit is full. 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-.

SEAT Workshop Service and Repair Manuals