I need the procedure to remove and replace the evaporator coil for a 1997 Lexus 450 LX.

EVAPORATOR� ASSEMBLY

Removal

Disconnect� negative� battery� cable, � and� wait� at� least� 90� seconds.� Discharge� A/C� system, � using� approved� refrigerant� recovery/recycling� equipment.� Disconnect� refrigerant� lines� from� evaporator.� Plug� openings.� Remove
glove� box� door.� Disconnect� electrical� connectors.� Remove� evaporator� assembly.

Disassembly

Release� spring� clips� holding� covers� together.� Remove� any� screws� at� case� joints.� Separate� upper� and� lower� cases� from� evaporator� core.� See Fig.� 16�.� Remove� Allen� bolt� from� expansion� valve, � and� remove� expansion
valve.

Reassembly� &� Installation

To� reassemble� and� install� evaporator� assembly, � reverse� disassembly� and� removal� procedures.� If� installing� a� new� evaporator� core, � add� 1.4� ounces� of� refrigerant� oil� to� core� before� installing.� Evacuate, � recharge� and� leak
test� system.

Fig.� 16:� Exploded� View� Of� Evaporator� Assembly
note you may have to pull the lower unit off to get evaporator out.