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Fuel supply, gas operation > < Removing and installing coolant pump

Octavia Mk2

Checking the coolant system for tightness
Checking the coolant system for tightness
Special tools and workshop equipment required
t  Coolant system tester, e.g. -V.A.G 1274-
t  Adapter, e.°g. -V.A.G 1274/8-
t  Adapter, e.°g. -V.A.G 1274/9-
Test condition
l  Engine must be warm
Test sequence
  WARNING
Hot steam may escape when the coolant compensation bottle is opened. Wear safety goggles and safety clothing, in order to avoid eye injuries and scalding. Cover the cap with a cloth and open carefully.
–  Open the cap of the coolant expansion reservoir.
   
–  Position coolant system tester -V.A.G 1274 - with adapter -V.A.G 1274/8- on the compensation bottle.
–  Using the hand pump of the testing device generate an overpressure of approx. 0,1 MPa (1 bar).
If the pressure drops:
–  Search position of the leak and repair fault.
Testing the pressure relief valve in the cap
  S19-0160
–  Position the cooling system testing device -V.A.G 1274- with adapter -V.A.G 1274/9 - on the cap.
–  Operate the hand pump.
l  The pressure relief valve should open at a pressure of 0.14 ... 0.16 MPa (1.4 ... 1.6 bar).
If the pressure relief valve does not open:
–  Replace cap.
  S19-0237

Fuel supply, gas operation > < Removing and installing coolant pump