A8L Quattro Sedan W12-6.0L (BSB) (2005)
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Check both coolant pipes - B - and heater core connections - C - for soiling or damage.
‹› Sealing rings must always be replaced.
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Lightly coat sealing ring - A - with coolant and place on coolant pipe - B -.
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Place clamping bracket - A - (with studs) according to illustration onto connection at heater core - B -.
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Place clamping bracket - C - (with holes) onto coolant pipe - D - according to illustration.
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Insert coolant line - D - (with sealing ring) into connection of heater core - B -.
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Secure coolant pipe with two clamping brackets - C - and - D - in heater core.
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Tighten both hex nuts - A - and - B - alternately and uniformly (tightening torque 3 Nm).