WARNING Hot steam or hot coolant can escape when expansion tank is opened; cover filler cap with cloth and open carefully. |
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| Open filler cap on coolant expansion tank. |
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| Attach cooling system tester -V.A.G 1274- with adapter -V.A.G 1274/8- to expansion tank. |
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| Use hand pump on cooling system tester to create a pressure of approx. 1.0 bar. |
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