volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

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Testing pressure relief valve in filler cap > < Removing and installing radiator

Golf Mk5

Checking cooling system for leaks
   
Checking cooling system for leaks
Special tools and workshop equipment required
t  Cooling system tester -V.A.G 1274-
t  Cooling system tester adapter -V.A.G 1274/8-
t  Cooling system tester adapter -V.A.G 1274/9-

Checking pressure relief valve in filler cap → Chapter
l  Engine at operating temperature.
Test sequence
  WARNING
Steam may escape when expansion tank is opened. Wear protective glasses and clothing to avoid eye injuries and scalding. Cover cap with cloth and open carefully.
–  Open cap on coolant expansion tank.
   
–  Set cooling system tester -V.A.G 1274- with adapter -V.A.G 1274/8- on coolant reservoir.
–  Use hand pump on tester to create a pressure of about 1.0 bar.
–  If pressure drops find leaks and rectify.
  A19-0036

Testing pressure relief valve in filler cap > < Removing and installing radiator