90 Quattro Sport V6-2.8L (AFC) (1995)
Compressor Speed Sensor: Service and Repair
REMOVING AND INSTALLING:
Compressor Speed Sensor
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Discharge A/C refrigerant system.
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Disconnect speed sensor harness connector.
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Remove screws -B-.
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Remove sensor -A-.
Install in reverse order of removal noting the following:
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With sensor removed, inspect teeth on sensor wheel inside compressor for damage (4 teeth around circumference).
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Replace O-ring -C-.
O-ring: 15.5 mm inside diameter, 1.5 mm thickness
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Install screws -B-.
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Tightening torque: 5 Nm (44 in. lb)