WARNING Steam may be released when opening the expansion tank. Cover the cap with a cloth and open carefully. |
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| Open filler cap on coolant expansion tank. |
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| Screw adapter for cooling system tester -V.A.G 1274/8- into coolant expansion tank. |
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| Clamp connector -V.A.G 1274 B/1- into adapter for cooling system tester -V.A.G 1274/8-. |
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| Connect the connecting piece -V.A.G 1274 B/1- together with the connecting hose of the device to the cooling system tester -V.A.G 1274 B- |
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| Using hand pump on cooling system tester, build up a pressure of approx. 1.0 bar. |
WARNING Risk of scalding! Before disconnecting cooling system tester -V.A.G 1274 B- from connecting hose or connector -V.A.G 1274 B/1-, always relieve existing pressure. To do this, press pressure relief valve on cooling system tester -V.A.G 1274 B- until pressure gauge displays value of »0«. |
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| Find leaks and rectify. |
Check pressure relief valve in cap. |
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| Screw cap into adapter for cooling system tester -V.A.G 1274/9-. |
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| Clamp connector -V.A.G 1274 B/1- into adapter for cooling system tester -V.A.G 1274/9-. |
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| Connect the connecting piece -V.A.G 1274 B/1- together with the connecting hose of the device to the cooling system tester -V.A.G 1274 B- |
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| Using hand pump on cooling system tester, build up a pressure of approx. 1.6 bar. |
The pressure relief valve must not open. |
If the pressure relief valve opens prematurely: |
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| Increase pressure to over 1.6 bar. |
The pressure relief valve must open. |
If the pressure relief valve does not open: |
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