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Fuel supply, gas operation > < Cooling system

Leon Mk1

Cooling system: checking seal
Cooling system: checking seal
Check the tool and equipment equivalence table according to the applicability between Seat / VW / Audi / Skoda → Chapter
   
Special tools and workshop equipment required
t  Coolant tester -VAG 1274B-, see equivalent → Anchor
t  Adapter -VAG 1274/8-, see equivalent → Anchor
t  Adapter -VAG 1274/9-, see equivalent → Anchor

Test conditions
l  Engine at operating temperature
Checking sequence
  WARNING
Steam may be released when opening the expansion tank. Wear safety goggles and appropriate clothing to avoid injury to eyes and burns. Cover the cap with a cloth and open carefully.
–  Open the cap of the coolant expansion tank.
   
–  Fit the cooling tester -V.A.G 1274B- with the adapter -V.A.G 1274/8- onto the expansion tank.
–  Use hand pump on tester to create a pressure of approx. 1.0 bar.
If the pressure drops:
–  Locate the leak and repair the fault.
Pressure relief valve in filler cap: Check
  A19-0036
–  Fit the cooling tester -V.A.G 1274B- with the adapter -V.A.G 1274/9- onto the filler cap.
–  Operate hand vacuum pump.
l  At a pressure of 1.4 ... 1.6 bars pressure release valve should open.
  A19-0055

Fuel supply, gas operation > < Cooling system