Refrigerant Pressure Sensor / Switch: Service and Repair
AIR CONDITIONING (A/C) REFRIGERANT PRESSURE SENSOR REPLACEMENTTOOLS REQUIRED
J 39400-A Halogen Leak Detector
REMOVAL PROCEDURE
1. Disconnect the refrigerant pressure sensor electrical connector.
2. Remove the pressure sensor (1) from the evaporator tube - front.
3. Remove and discard the O-ring seal from the sensor port on the evaporator tube - front.
INSTALLATION PROCEDURE
1. Using a lint-free clean, dry cloth, carefully clean the sealing surfaces of the sensor port on the evaporator tube - front and the refrigerant pressure sensor.
2. Lightly coat the new O-ring seal with mineral base 525 viscosity refrigerant oil.
IMPORTANT: DO NOT allow any of the mineral base 525 viscosity refrigerant oil on the O-ring seal to enter the refrigerant system.
3. Carefully slide the new O-ring seal onto the sensor port on the evaporator tube - front until seated.
NOTE: Refer to Fastener Notice in Service Precautions.
4. Install the pressure sensor (1) to the evaporator tube - front.
Tighten
Tighten the sensor to 4.75 N.m (42 lb in).
5. Connect the pressure sensor electrical connector.
6. Leak test the fittings of the component using J 39400-A.