seat Workshop Repair Guides

SEAT Workshop Service and Repair Manuals

ABOUT US
Mixture preparation system, electronic inj.,Gas > < Assembly of hose connections with couplings

Leon Mk2

Checking charge air system for leaks
Checking charge air system for leaks
Special tools and workshop equipment required
   
t  Charge air system tester -V.A.G 1687- with Adapter -V.A.G 1687/11- and -V.A.G 1687/15-
Operation process
–  Remove air cleaner housing → Chapter.
  W00-10327
–  Connect the adapter -V.A.G 1687/11- with -V.A.G 1687/15- to the exhaust gas turbocharger.
–  Connect the compressed air hose -1- to the adapter.
  A21-10532
–  Attach the charge air system tester -V.A.G 1687- to the adapter.
  A21-10178
Prepare charge air system tester -V.A.G 1687- as follows:
–  Unscrew pressure control valve -2- completely and close valves -3- and -4-.
l  Make sure knob is pulled out before turning pressure control valve.
–  Using a commercially available connection piece, connect charge air system tester -V.A.G 1687- to compressed air -1-.
  Note
If there is water in sight glass, remove drain plug -6- and drain water.
–  Open valve -3-.
  Caution
Risk of damage if pressure is set too high.
The pressure must not exceed 0.5 bar.
–  Adjust pressure to 0.5 bar via pressure control valve -2-.
–  Open valve -4- and wait until test system is pressurised. If necessary, adjust pressure to 0.5 bar again.
–  Check charge air system for audible leaks or leaks that can be felt with the hand; apply commercially available leak detecting spray or use ultrasonic tester -V.A.G 1842-.
  Note
t  A small amount of air escapes through the valves and enters the engine. Therefore it is not possible to perform a pressure retention test.
t  For operation of ultrasonic tester -V.A.G 1842-, refer to → Operating instructions.
t  Before removing the adapter, the pressure in the test circuit must be eliminated by disconnecting the hose coupling.
t  Hose connections and air pipes and hoses must be free from oil and grease before fitting.
t  Secure all hose connections with the correct type of hose clips (same as original equipment) → Electronic parts catalogue.
  V21-0168

Mixture preparation system, electronic inj.,Gas > < Assembly of hose connections with couplings