S6 Quattro Sedan V10-5.2L (BXA) (2007)
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‹› Different diameters for the sealing rings and clamps for coolant pipe - D - and - E -.
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Install coolant pipe - D - in the heat exchanger as was described for the coolant pipe on the right side.
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Install the coolant pipe holder - A -.
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Check the position of the grommets in the coolant pipe feeds through to the plenum chamber.
‹› Connect the 2-pin harness connector to the Coolant Pump (V50) of the pump/valve unit only after bleeding the coolant circuit.
‹› Coolant pump (V50) of pump-valve unit must only be operated after coolant circuit has been vented.
‹› Dry running of pump in pump valve unit leads to destruction.
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Reinstall all removed components in reverse order of removal except the plenum chamber cover, the glove compartment, and the driver's side
storage compartment.
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Fill and bleed the cooling circuit.
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After bleeding the cooling system, check it to ensure it is sealed tight. In particular, note the connections between the coolant pipes and the heat
exchanger
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After installation, check the grommet between engine compartment and plenum chamber at the coolant hose - C - for proper seating.
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Check the pump/valve unit, it may not make contact with other components (noises).
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After bleeding the coolant circuit, connect the connectors - D - to the Left Heat Regulation Valve (N175) and Right Heat Regulation Valve
(N176), and - E - to the coolant pump Coolant Pump (V50).
