GM Cutlass RWD 1970-1987 Repair Guide

Evaporator Core

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REMOVAL & INSTALLATION



  1. Disconnect the negative battery cable.
  2.  
  3. Discharge the system using a proper recycling/recovery system. Precise control is possible only when using a proper A/C refrigerant recovery station.
  4.  
  5. If you do not have access to these tools this service can be performed by a reputable shop.
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  7. Disconnect the evaporator inlet and outlet pipe using a backup and a flare nut wrench. Seal the openings of the accumulator (large aluminum can) and evaporator to prevent moisture and contamination from entering the system.
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Consult laws in your area before servicing the air conditioning system. In most areas it is illegal to perform repairs involving refrigerant unless the work done by a certified technician

  1. Remove the air conditioner module upper case as outlined in this section.
  2.  
  3. Remove the evaporator clamp and evaporator by pulling the assembly straight up and out of the module lower case.
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To install:
  1. Add 3 fluid ounces (90 ml) of 525 refrigerant oil.
  2.  
  3. Install the evaporator and seals into the lower case. Make sure the seals and evaporator are properly positioned after the evaporator is in place.
  4.  
  5. Install the evaporator clamp.
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  7. Install the module upper case with a quality sealer.
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  9. Install new O-rings and torque the inlet and outlet fittings to the accumulator using a backup and flare-nut wrench. Torque steel fittings to 32 ft. lbs. (44 Nm) and aluminum or copper fittings to 24 ft. lbs. (33 Nm).
  10.  
  11. Connect the negative battery cable and test the system performance.
  12.  
  13. Evacuate and recharge the system using a proper recycling/recovery system. Precise control is possible only when using a proper A/C refrigerant recovery station.
  14.  
  15. If you do not have access to these tools this service can be performed by a reputable shop.
  16.  

 
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