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Home >> Lincoln >> 1984 >> Mark VII Base, 2.4 L >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> A/C Compressor Oil Checking >> Compressor Oil Check - General Procedures >> Isolating Compressor
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Isolating Compressor

  1. Connect manifold gauge set to service valves on compressor. Close both gauge valves. Open both service valves to the mid-position.
  2. Start engine and operate air conditioning. Turn suction service valve slowly clockwise toward front-seated position. When suction pressure is reduced to zero or less, stop engine and quickly close suction service valve (front-seated).
  3. Front-seat the discharge valve. Loosen oil check plug
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