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Removing and installing radiator > < Draining and filling up coolant

Octavia Mk1

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
–  Open the cap of the coolant expansion reservoir.
  WARNING
Hot steam may escape when the expansion reservoir is opened, cover the cap with a cloth and open carefully.
   
–  Position coolant system tester e.g. -V.A.G 1274 - with adapter e.g. - V.A.G 1274/8- on the compensation bottle.
–  With the hand pump of the tester generate an overpressure of approx. 0.1 MPa.
–  If the pressure drops determine positions of the leak and repair.
Testing the pressure relief valve in the cap
–  Screw cap onto the tester using an adapter e.g. -V.A.G 1274/9-.
–  With the hand pump of the tester generate an overpressure of approx. 0,15 MPa.
–  The pressure relief valve should open at a pressure of 0.12 ... 0.15 MPa.
  A19-0036

Removing and installing radiator > < Draining and filling up coolant