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| Clamp housing with old seal on a suitable, level clean surface. |
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| Secure sealing plug-2- to breather connection of expansion tank -1-. |
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| Secure coolant hose -3- to engine oil cooler and expansion tank. |
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| Fill expansion tank up to „Max“ marking. |
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| Attach cooling system tester -V.A.G 1274- with cooling system tester adapter -V.A.G 1274/8- to expansion tank. |
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| Use hand pump on tester to create a pressure of about 1.6 bar. |
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| Watch pressure drop on pressure gauge. A pressure drop within 10 minutes is not permitted. |
Installation is carried out in the reverse order. When installing, note the following: |
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| Renew seal for housing. |
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| Check coolant level, replenish coolant if necessary → Chapter. |
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| Check engine oil level, replenish oil if necessary → Chapter. |
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