1955 Chevrolet Air Conditioning Shop Manual

       
    Page  
  Performance Test 22  
       
  Diagnosis 23  
     Drafts 23  
     Shortage of Air Supply at Outlets 23  
     Air Noise 23  
     Scraping Noise 23  
     Rattle and Vibration Noises 23  
     Water Leaking or Dripping into Passenger Compartment 23  
     Hissing Noise at Expansion Valve 23  
     Partial Frosting and Sweating of Cooling Unit or Poor Cooling 24  
     Failure to Cool 24  
     Too Cool 25  
     High Gauge Reading on High Side of System 25  
     Low Gauge Reading on High Side of System 25  
     High Gauge Reading on Low Side of System 25  
     Low Gauge Reading on Low Side of System 25  
       
  Diagnosis Summary 26  
     High Head Pressure 26  
     Low Head Pressure 26  
     Shortage of Refrigerant 26  
     Continuous Operation of Compressor 26  
     Poor or No Refrigeration 26  
     Inability to Obtain Proper Expansion Valve Adjustment 26  
     Stuck Open Needle in Expansion Valve 26  
     Stuck Shut Needle in Expansion Valve 26  
       

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