Toyota 87107-0C050 Unit Sub-Assy, Heater Radiator

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Removing the heater core in front-mounted systems and rear-mounted systems in Sequoia models can be complex. For rear-mounted systems, the rear AIC unit is mounted behind the rear quarter trim panel. Before starting the procedure, it is important to disconnect the negative cable from the battery. The cooling system should be drained and the refrigerant discharged and recovered by an air conditioning technician. For front-mounted systems, the heater hoses should be disconnected, and the instrument panel should be removed. The cooling unit should be separated from the reinforcement brace. The plastic retainer should be removed and the core should be pulled out. For rear-mounted systems, the right rear quarter trim panel should be removed, and the liquid tube and suction tube should be separated from the NC unit. The installation process involves refilling the cooling system, reconnecting the battery, and checking for leaks and proper system operation.

The liquid tube, suction tube, instrument panel reinforcement brace, defroster heater-to-register duct, A/C amplifier, cover plate, damper servo, and upper blower case should be removed along with the cooling unit.