Audi Workshop Service and Repair Manuals

Special tools and workshop equipment required

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

Test requirement:

• ● Engine warm

• ‒ Unscrew cap of coolant expansion tank.
• ‒ → Fit tester V.A.G 1274 with adapter V.A.G 1274/8 onto expansion tank.
• ‒ Use hand pump of tester to generate a pressure of approx. 1.0 bar.
• ‒ Locate leak and eliminate fault if there is a drop in pressure.

Checking pressure relief valve in cap

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