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Exhaust turbocharger, G-charger > < Removing and installing radiator

A3 Mk1

4-cyl TDI®-Engine, Mechanical Components
Removing and installing parts of the cooling system
Checking cooling system for leaks
 
G19-0002

Special tools and workshop equipment required

  • ◆ V.A.G 1274
  • ◆ Adapter 1274/8
  • ◆ Adapter 1274/9

Test requirements:

  • ● Engine at operating temperature.
Important
Hot steam can escape when opening cap on expansion tank: Cover cap with a cloth and open carefully.
  • ‒ Open the cover of the coolant expansion tank
 
A19-0036
  • ‒ → Fit tester V.A.G 1274 with adapter V.A.G 1274/8 onto expansion tank.
  • ‒ Using hand pump on tester, build up a pressure of approx. 1.0 bar.
  • ‒ If this pressure is not maintained, locate and rectify leaks.
 
A19-0055

Checking pressure relief valve in filler cap

  • ‒ → Fit tester V.A.G 1274 with adapter V.A.G 1274/9 onto sealing cap.
  • ‒ Operate hand pump.
    • ‒ The pressure relief valve should open at a pressure of 1.4 ... 1.6 bar.

Exhaust turbocharger, G-charger > < Removing and installing radiator