Nissan Pick-ups and Pathfinder 1989-1995

A/C Compressor

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Please refer to Section 1 for all Charging and Discharging procedures.

It may be illegal in certain areas to service air conditioning components unless you are certified and have an approved recovery/recycling station. Consult with your local authorities.

REMOVAL & INSTALLATION



See Figures 1 through 5


CAUTION
The compressed refrigerant used in the air conditioning system expands into the atmosphere at a temperature of -21.7F (-29.8C) or lower. This will freeze any surface, including your eyes, that it contacts. In addition, the refrigerant decomposes into a poisonous gas in the presence of a flame. Do not open or disconnect any part of the air conditioning system until you have read the SAFETY WARNINGS portion of Section 1.

  1. Either discharge the A/C system using an approved recovery station or have the A/C discharged by a reputable repair facility.
  2.  
  3. Disconnect the negative battery cable.
  4.  
  5. Remove all the necessary components in order to gain access to the compressor mounting bolts.
  6.  



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Fig. Fig. 1: Use two wrenches when loosening the coupling



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Fig. Fig. 2: Air conditioning compressor mounting-Z24i engine



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Fig. Fig. 3: Air conditioning compressor mounting-VG30i engine



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Fig. Fig. 4: Air conditioning compressor mounting-KA24E engine



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Fig. Fig. 5: Air conditioning compressor mounting-VG30E engine

  1. Remove the compressor drive belt.
  2.  

To facilitate removal of the compressor belt, remove the idler pulley and bracket as an assembly beforehand from the underside of the truck.

  1. Disconnect the refrigerant lines. Plug or cap all openings immediately to prevent system contamination.
  2.  

Be sure to use 2 wrenches (one to loosen the fitting and one to hold it in place) when disconnecting the refrigerant lines.

  1. Tag and detach all electrical connections.
  2.  
  3. Unfasten the mounting bolts, then remove the compressor from the vehicle.
  4.  

To install:
  1. Install the compressor on the engine and evenly tighten all the mounting bolts equally. On the Z24i and VG30i, tighten to 27-37 ft. lbs. (36-50 Nm); on the KA24E and VG30E, tighten to 33-44 ft. lbs. (45-60 Nm).
  2.  
  3. Unplug and reconnect all refrigerant lines.
  4.  
  5. Fasten all electrical connections.
  6.  
  7. Install any other components which were removed to gain access to the compressor mounting bolts.
  8.  
  9. Install and adjust the drive belt.
  10.  
  11. Connect the negative battery cable.
  12.  
  13. Either properly evacuate and charge the A/C system using an approved charging station or have the system serviced by a reputable repair facility. Make sure the oil level is correct for the compressor.
  14.  

Do not leave the compressor on its side or upside down for more than a couple minutes, as the oil in the compressor will enter the low pressure chambers. Always be sure to replace the O-rings.

 
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