TT Quattro Coupe V6-3.2L (CBRA) (2008)
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Clamp off coolant hoses - A - and - B -.
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Clamp of ventilation hose - C - (to coolant expansion tank), e.g. with a Hose Clamp up to 25 mm dia. (3094) - G -.
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Cover the area beneath connections for coolant hoses - A - and - B -, for example, with a paper towel.
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Remove coolant hoses - A - and - B - from connections to A/C unit heat exchanger.
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Connect a section of hose - A - onto upper connection.
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Hold a container - B - under the lower connection - C -.
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Using a compressed air gun, carefully blow coolant out of heater core (into container - B -).
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Remove bolt - A - from connector flange - B - (so that coolant pipes can be moved to remove heater core).