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Vacuum hose connection diagram > < Removing and installing charge air cooler

Leon Mk2

Checking the supercharger system for leaks
Checking the supercharger system for leaks
Consult the equivalence table for tools and equipment according to applicability among Seat / VW / Audi / Skoda → Chapter.
Special tools and workshop equipment required
   
t  Cooling system leakage check -VAG 1687-, see equivalent → Anchor
  W00-10327
–  Remove intake hose -1- from air filter.
–  Attach the adjustable adaptor -1687/1- to the intake hose-1- and and fix it with a clamp.
Prepare the cooling system leakage check -VAG 1687- as described below:
  N21-10132
–  Unscrew pressure regulating valve -2- and close valves -3- and -4-.
  Note
In order to unscrew the pressure regulation valve -2-, the rotary button must be completely upwards.
  V21-0168
–  Connect the cooling system leakage tester -VAG 1687- to the adjustable adaptor -1687/1-.
  N21-10132
–  Connect the compressed air hose -1- (compressed air supply) to the cooling system leakage tester -VAG 1687-.
  Note
If there is water in the inspection hole, drain it through the drain screw -6-.
–  Open valve -3-.
–  Adjust pressure to 0.5 bar with pressure regulating valve -2-.
  Caution
The pressure must not exceed 0.5 bar. If the pressure is set too high this can damage the engine.
–  Open valve -4- and wait until the test circuit is filled. If necessary readjust pressure to 0.5 bar.
–  Check whether the supercharge system has leaks by listening, feeling or using leak detector spray.
  Note
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 adjustable adaptor -1687/1-.
  V21-0168

Vacuum hose connection diagram > < Removing and installing charge air cooler