COMPRESSOR(for 1NR-FE) 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. INSPECT COMPRESSOR OIL

    1. When replacing the compressor assembly with a new one, gradually discharge the inert gas (helium) from the service valve, and drain the following amount of oil before installation.

      Standard

      (The amount of compressor oil inside a new compressor assembly with pulley: 80 (+15) cc (2.71 (+0.507) fl.oz.)) - (The amount of compressor oil remaining in the removed compressor assembly with pulley) = The amount of compressor oil to be removed when replacing the compressor assembly with pulley

      Note:

      • If a new compressor assembly with pulley is installed without removing the same amount of compressor oil as is remaining in the pipes, the amount of compressor oil will be excessive. This prevents heat exchange in the refrigerant cycle and will cause a refrigeration failure.

      • If the amount of compressor oil remaining in the removed compressor assembly with pulley is too low, check for compressor oil leakage.

      • 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.

    2. Remove the suction seal cap.

    3. E265666

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

      Note:

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

    4. E265667

      Position the DL pulley side downward and turn the pulley in the direction indicated by the arrow once in 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.

    5. E265668

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

    6. Repeat procedure (*1). (*4)

    7. Repeat procedures (*2) through (*4) about 5 times to drain the standard amount of oil.

  2. INSTALL COMPRESSOR ASSEMBLY WITH PULLEY

    1. E265665C01

      Using an E8 "TORX" socket, temporarily install the compressor assembly with pulley with the 2 stud bolts.

      9.8 N*m

      100 kgf*cm

      87 in.*lbf

      Tip:

      Tighten the stud bolts in the order shown in the illustration to temporarily install the compressor assembly with pulley.

    2. E265664C02
      V100135

      Bolt
      V100136

      Nut

      Install the compressor assembly with pulley with the 2 bolts and 2 nuts.

      25 N*m

      255 kgf*cm

      18 ft.*lbf

      Tip:

      Tighten the bolts and nuts in the order shown in the illustration to install the compressor assembly with pulley.

    3. Connect the connector.

  3. CONNECT SUCTION HOSE SUB-ASSEMBLY

    1. Remove the vinyl tape from the suction hose sub-assembly.

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

      Refrigerant

      Compressor Oil

      HFC-134a (R134a)

      ND-OIL 8 or equivalent

      HFO-1234yf (R1234yf)

      ND-OIL 12 or equivalent

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

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

      9.8 N*m

      100 kgf*cm

      87 in.*lbf

  4. CONNECT DISCHARGE HOSE SUB-ASSEMBLY

    1. Remove the vinyl tape from the discharge hose sub-assembly.

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

      Refrigerant

      Compressor Oil

      HFC-134a (R134a)

      ND-OIL 8 or equivalent

      HFO-1234yf (R1234yf)

      ND-OIL 12 or equivalent

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

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

      9.8 N*m

      100 kgf*cm

      87 in.*lbf

  5. INSTALL V-RIBBED BELT

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  6. CHARGE AIR CONDITIONING SYSTEM WITH REFRIGERANT (for HFC-134a(R134a))

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  7. CHARGE AIR CONDITIONING SYSTEM WITH REFRIGERANT (for HFO-1234yf(R1234yf))

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  8. WARM UP ENGINE (for HFC-134a(R134a))

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  9. WARM UP ENGINE (for HFO-1234yf(R1234yf))

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  10. INSPECT FOR REFRIGERANT LEAK (for HFC-134a(R134a))

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  11. INSPECT FOR REFRIGERANT LEAK (for HFO-1234yf(R1234yf))

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