volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

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Checking pressure relief valve in filler cap > < Removing and installing thermostat

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-

Test prerequisites
l  Engine at operating temperature.
Test sequence
  WARNING
Hot steam may escape when expansion tank is opened. Place rag over cap and open with caution.
–  Open cap on coolant expansion tank.
   
–  Attach cooling system tester -V.A.G 1274- with cooling system tester adapter -V.A.G 1274/8- to expansion tank.
–  Use hand pump on tester to create a pressure of about 1.0 bar.
If pressure drops:
–  Find leaks and rectify.
  A19-0036

Checking pressure relief valve in filler cap > < Removing and installing thermostat