COMPRESSOR(for 1WW, 2WW) INSTALLATION

CAUTION / NOTICE / HINT

Note

for HFO-1234yf (R1234yf):


  • Always use ND-OIL 12 as the compressor oil.

  • The oil used for HFC-134a (R134a) systems (ND-OIL 8) does not work well in HFO-1234yf (R1234yf) systems. If the oil used for HFC-134a (R134a) systems (ND-OIL 8) is used in an HFO-1234yf (R1234yf) system, it will result in degradation of the refrigerant and deterioration of resin parts.

for HFC-134a (R134a):


  • The recommended compressor oil listed on the compressor assembly and on the engine hood may differ. Make sure to use the compressor oil listed on the engine hood.

  • If ND-OIL 12 is mixed with the ND-OIL 8 in the system, the performance of the air conditioning system will not be affected.

PROCEDURE


  1. ADJUST AMOUNT OF COMPRESSOR OIL


    1. A004R8F

      When replacing the compressor assembly with a new one:

      Drain the following amount of compressor oil from the new compressor with pulley to be installed to adjust the amount of compressor oil.

      Standard
      (The amount of oil in a new compressor assembly with pulley: 90 to 105 cc (3.04 to 3.55 fl.oz.)) - (The amount of oil in the removed compressor assembly with pulley) = The amount of oil to be removed from the new compressor assembly with pulley.

      Note


      • Since compressor oil remains in the pipes of the vehicle, if a new compressor is installed without removing some oil from the compressor, the oil amount becomes excessive. Excessive oil prevents heat exchange in the refrigerant cycle and causes refrigeration system failure.

      • for HFC-134a(R134a):

        Make sure to use ND-OIL 8 or equivalent compressor oil.

      • for HFO-1234yf(R1234yf):

        Make sure to use ND-OIL 12 or equivalent compressor oil.


      1. Discharge the inert gas (helium) from the service valve.

      2. Remove the suction seal cap.

      3. Position the suction port downward and slightly shake the compressor to drain oil.*1

        Note

        Be careful not to allow compressor oil to adhere to the pulley.

    2. A004S62

      Position the pulley side downward and turn the pulley in the direction indicated by the arrow once every 2 seconds 10 times.*2

      Note

      Keep your face away from the compressor port because turning the pulley may cause gas or oil to spew out.

    3. A004U18

      Quickly position the pulley side upward and turn the pulley in the direction indicated by the arrow once.*3

    4. Repeat procedure *1.*4

    5. Repeat procedures *2 through *4 approximately 5 times to drain the standard amount of oil.

  2. INSTALL COMPRESSOR ASSEMBLY WITH PULLEY


    1. A004NM2E01
      Text in Illustration
      *a Protrusion Height

      Using a plastic-faced hammer, tap in a new compressor pin.

      Standard protrusion height
      3.5 to 4.5 mm (0.138 to 0.177 in.)

    2. Using an E8 "TORX" socket wrench, install the 2 stud bolts.

      Torque:
      9.8 N*m  { 100 kgf*cm, 87 in.*lbf }
    3. A004POYE01

      Install the bolt and 2 nuts.

      Torque:
      25 N*m  { 255 kgf*cm, 18 ft.*lbf }

      Tech Tips

      Tighten the bolts and nuts in the order shown in the illustration.

    4. Connect the connector and attach the harness clamp.

  3. CONNECT DISCHARGE HOSE SUB-ASSEMBLY


    1. Remove the attached vinyl tape from the hose and compressor.

    2. Apply sufficient compressor oil to a new O-ring and the fitting surface of the compressor assembly with pulley.

      for HFC-134a(R134a): Compressor oil
      ND-OIL 8 or equivalent
      for HFO-1234yf(R1234yf): Compressor oil
      ND-OIL 12 or equivalent

    3. Install the O-ring to the discharge hose sub-assembly.

    4. Connect the discharge hose sub-assembly to the compressor assembly with pulley with the bolt.

      Torque:
      9.8 N*m  { 100 kgf*cm, 87 in.*lbf }

  4. CONNECT SUCTION HOSE SUB-ASSEMBLY


    1. Remove the attached vinyl tape from the hose and compressor.

    2. Apply sufficient compressor oil to a new O-ring and the fitting surface of the compressor assembly with pulley.

      for HFC-134a(R134a): Compressor oil
      ND-OIL 8 or equivalent
      for HFO-1234yf(R1234yf): Compressor oil
      ND-OIL 12 or equivalent

    3. Install the O-ring to the suction hose sub-assembly.

    4. Connect the suction hose sub-assembly to the compressor assembly with pulley with the bolt.

      Torque:
      9.8 N*m  { 100 kgf*cm, 87 in.*lbf }

  5. INSTALL FAN AND GENERATOR V BELT


    1. for 1WW:

      Install the fan and generator V belt Click here.

    2. for 2WW:

      Install the fan and generator V belt Click here.

  6. INSTALL RADIATOR ASSEMBLY


    1. for 1WW:

      Install the radiator assembly Click here.

    2. for 2WW:

      Install the radiator assembly Click here.

  7. CHARGE REFRIGERANT


    1. for HFC-134a(R134a):

      Click here

    2. for HFO-1234yf(R1234yf):

      Click here

  8. WARM UP ENGINE


    1. for HFC-134a(R134a):

      Click here

    2. for HFO-1234yf(R1234yf):

      Click here

  9. INSPECT FOR COOLANT LEAK


    1. for 1WW:

      Inspect for coolant leak Click here.

    2. for 2WW:

      Inspect for coolant leak Click here.

  10. CHECK FOR REFRIGERANT LEAK


    1. for HFC-134a(R134a):

      Click here

    2. for HFO-1234yf(R1234yf):

      Click here