S4 Quattro Wagon V6-2.7L Turbo (APB) (2002)
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Disconnect electrical harness connector.
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Remove pressure switch -B-
Tightening torque: 5 Nm (44 in. lb.)
Always replace O-ring -A- (10.8 mm x 1.8 mm).
NOTE:
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To allow cooling performance checking with switch removed, bridge terminals -1- and - 2- of connector -B-.
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Refrigerant circuit remains closed, connection with Schrader valve.
