Toyota 88515-14062 Valve, Cooler Expansion

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To remove the refrigerant from a vehicle's air conditioning system, it is recommended to have it discharged at a dealer service department or an automotive air conditioning repair facility. Before starting the removal process, disconnect the battery cable from the negative battery terminal, ensuring you have the correct activation code for the stereo if it has an anti-theft system. In the engine compartment, disconnect the refrigerant lines from the evaporator, using a backup wrench to avoid damaging the lines. Cap the open fittings immediately to prevent dirt and moisture from entering, and remove the inlet and outlet grommets. Remove the glove box and lower trim panel, followed by the Blower Motor and air conditioning amplifier from the cooling unit. Disconnect all electrical connectors and tubing, remove the mounting nuts and bolts, and pull the unit free. To remove the evaporator and A/C Expansion Valve, disconnect all connectors, unfasten the retaining clips, and remove the retaining screws. Check the evaporator fins for blockage and clean them with compressed air if necessary. Inspect fittings for cracks and wear, replacing any parts as needed. For installation, follow the reverse of the removal procedure, ensuring to replace all O-rings with new ones. If a new evaporator was installed, add the appropriate amount of refrigerant oil to the system. Finally, have the system evacuated, charged, and leak tested by a professional shop.

The first step is to discharge the air conditioning system.