A6 Quattro Sedan V6-3.2L (BKH) (2005)
‹› Using the flexible bracket - A - installed at the A/C unit and the splines - B -, fluctuations in tolerance are balanced out and the A/C unit is
centered with respect to the center tunnel.
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Reinstall all removed components in reverse order of removal except the lower instrument panel cover (driver's side), the glove compartment, and
the plenum chamber cover.
‹› Connect the 2-pin harness connector to the Coolant Pump (V50) of the pump/valve unit only after bleeding the coolant circuit.
‹› The Coolant Pump (V50) (in the pump/valve unit) may only be operated after bleeding the coolant circuit.
‹› Dry running of pump in pump valve unit leads to destruction.
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Fill and bleed cooling circuit.
‹› When bleeding coolant circuit, take special care to ensure complete bleeding of heat exchangers. If air bubbles remain in heat exchangers, there
may be complaints made by customers about insufficient heating performance in winter, or different air temperature from vents at same setting in
regulated mode.
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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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Check the position of the grommets in the coolant pipe feeds through and at the refrigerant pipe connecting flange from the plenum chamber to the
passenger area for proper seating.
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After installation, check the grommet between engine compartment and plenum chamber at the coolant hose - C - for proper seating.