Diesel Data: Automotive Repair

Overhaul

Evaporator Overhaul:




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

NOTE: When loosening the expansion valve nuts, use a second wrench to hold the valve or evaporator pipe or they can be cracked.

Assemble in the reverse order of disassembly, and:
^ Replace all 0-rings with new ones at each fitting, and apply a thin coat if refrigerant oil (SP-1O: P/N 38899-P13-OO3) before installing them.

NOTE: Be sure to use the right 0-rings for R-134a to avoid leakage.

^ Install the expansion valve capillary tube with the capillary tube in contact with the suction line directly, and wrap it with tape.
^ Reinstall the A/C thermostat sensor in its original location.