LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 1985 >> Forward Control 4.8 T, Standard >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> A/C Compressor Oil Checking >> HARRISON DA-V5, 5-Cylinder Compressor Oil Checking

HARRISON DA-V5, 5-Cylinder Compressor Oil Checking

NOTE: Harrison Compressors, built by the Harrison Radiator Division of General Motors, may have been referred to in the past as Frigidaire, General Motors or Delco-Air Compressors.
  1. When a DA V5 compressor is removed from the vehicle for servicing, the amount of oil remaining in the compressor should be drained and measured. This oil should then be discarded and new refrigerant oil added.
    NOTE: Drain oil from the oil drain plug open to insure complete draining of oil from the compressor.
  2. The compressor has a unique lubrication system. The crankcase-suction bleed is routed through the rotating swashplate for lubrication of the swashplate bearing. The rotation acts as an oil separator, which removes some of the oil from the crankcase-suction bleed, re-routing it to the crankcase where it can lubricate the compressor mechanism.
  3. Up to 4 ounces of oil can collect in the crankcase. All replacement compressors will be shipped from the factory with 8 ounces of oil in the crankcase. The oil must be drained from the oil drain plug opening and retained. Replace the oil in the same quantity as previously drained from the old compressor.
NOTE: If a new accumulator must be added to the DA V5 system, add an additional 2 ounces of oil to the compressor to compensate for that retained by the original accumulator desiccant.
scientia non olet · About LEMON Manuals