S5 Quattro Coupe V8-4.2L (CAUA) (2009)
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Lightly moisten the seals - D - (contained in the heat exchanger delivery) with coolant (or lightly with silicone grease).
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Install the new seals - D - on both heat exchanger coolant pipes - E - and - F -.
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Push the heat exchanger - A - into the A/C unit.
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Support the heat exchanger - A -, for example, with a plastic wedge - B - on the center tunnel - C - so that it cannot slip down when attaching the
coolant pipes.
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Install a longer screw - G - (with a M5 thread) all the way to the stop in the bracket - C - as shown in the illustration.
