100S Quattro Wagon (Canada) V6-2.8L (AAH) (1992)
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High Pressure Sensor / Switch: Service and Repair
Function
Switches A/C compressor clutch OFF if system pressure is too high.
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Switch opens (compressor OFF): 28.2 - 31.0 bar (409 - 449 psi).
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Switch closes (compressor ON): 10.3 - 17.3 bar (149 - 251 psi).
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Switch identified by red housing, located on left side of condenser.
Removing And Installing
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Remove electrical connector and remove high pressure switch. Refrigerant system remains closed (valve under switch).
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Install new O-ring -A- (9.3 mm x 1.8 mm). Tightening torque: 5 Nm (44 in lb).
NOTE: Only use O-rings specified for use with R-12 refrigerant and refrigerant oil.
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DO NOT reuse O-rings, always replace.
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Lubricate O-rings with A/C refrigerant oil before installing
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Always use correct size O-ring.
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During installation, ensure proper seat in groove.
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Keep work area, components and O-rings clean.
