Overhaul

Overhaul

1. Pull out the A/C thermostat sensor from the evaporator fins.
2. Remove the self – tapping screws and clips from the housing.
3. Carefully separate the housings and remove the evaporator.
4. If necessary, remove the expansion valve.

Note: To prevent evaporator or valve damage during removal of the valve nuts, use a second spanner to hold the valve or evaporator pipes.

5. Assemble in the reverse order of disassembly, and:

• replace the 'O' rings with new ones at each fitting and apply a thin coat of refrigerant oil (Nippondenso Densoil 8) prior to installation.

Note: Be sure to use the correct 'O' rings for R134a to avoid leakage.

• ensure there is no foreign matter stuck between the capillary tube and outlet line.
• install the expansion valve capillary tube with the capillary tube in direct contact with the suction line and wrap with tape.
• reinstall the A/C thermostat sensor in its original location.
• blow dirt out of the evaporator fins using compressed air.

1. A A/C thermostat
2. B Upper housing
3. C Evaporator
4. D Expansion valve
5. E Lower housing
6. F Tape
7. G Capillary tube