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Home >> Lexus >> 2019 >> LC 500 >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Intake / Exhaust System - Service Information (Coupe) >> Intake Manifold >> Installation [03/2017 - 05/2023] >> Procedure

Installation [03/2017 - 05/2023]: Procedure

  1. INSTALL INTAKE AIR SURGE TANK ASSEMBLY 
    1. Install 2 new No. 1 intake manifold to head gaskets to the cylinder head sub-assembly.
    2. Temporarily install the intake air surge tank assembly to the cylinder head sub-assembly with the 8 bolts and 2 nuts.
    3. Tighten the 8 bolts and 2 nuts in the order shown in the illustration.
      Fig 1: Intake Air Surge Tank Assembly Bolts And Nuts Tightening Sequence
      GTY810993Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Bolt
      Nut

      Torque: 21 N.m (214 kgf/cm, 15 ft.lbf) 

    4. Connect the wire harness bracket to the intake air surge tank assembly with the bolt.

      Torque: 10 N.m (102 kgf/cm, 7 ft.lbf) 

  2. INSTALL WIRE HARNESS CLAMP BRACKET 
    1. Install the 3 wire harness clamp brackets with the 4 bolts.

      Torque: 10 N.m (102 kgf/cm, 7 ft.lbf) 

  3. CONNECT NO. 1 FUEL PIPE SUB-ASSEMBLY 
    1. Connect the No. 1 fuel pipe sub-assembly to the intake air surge tank assembly with the bolt.

      Torque: 10 N.m (102 kgf/cm, 7 ft.lbf) 

  4. INSTALL PORT FUEL INJECTOR ASSEMBLY 

    Refer to PROCEDURE - Step 1

  5. INSTALL INJECTOR VIBRATION INSULATOR 

    Refer to PROCEDURE - Step 2

  6. INSTALL NO. 1 DELIVERY PIPE SPACER 

    Refer to PROCEDURE - Step 3

  7. INSTALL FUEL DELIVERY PIPE SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 4

  8. INSTALL NO. 2 FUEL DELIVERY PIPE SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 5

  9. INSTALL FUEL TUBE SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 6

  10. INSTALL WATER BY-PASS PIPE SUB-ASSEMBLY 
    1. Install the water by-pass pipe sub-assembly to the intake air surge tank assembly with the 2 bolts.

      Torque: 10 N.m (102 kgf/cm, 7 ft.lbf) 

    2. Connect the heater water inlet hose to the water by-pass pipe sub-assembly and slide the clip to secure the hose.
    3. Connect the heater water outlet hose to the water by-pass pipe sub-assembly and slide the clip to secure the hose.
    4. Connect the No. 5 water by-pass hose to the water by-pass pipe sub-assembly and slide the clip to secure the hose.
    5. Connect the water by-pass hose to the water by-pass pipe sub-assembly and slide the clip to secure the hose.
    6. Connect the No. 3 water by-pass hose to the water by-pass pipe sub-assembly and slide the clip to secure the hose.
  11. INSTALL INJECTOR DRIVER BRACKET 
    1. Install the 2 injector driver brackets to the intake air surge tank assembly with the 4 bolts.

      Torque: 10 N.m (102 kgf/cm, 7 ft.lbf) 

  12. CONNECT PCV HOSE 
    1. Connect the PCV hose to the intake air surge tank assembly and slide the clip to secure the hose.
  13. INSTALL FUEL VAPOR FEED HOSE 
    1. Install the fuel vapor feed hose to the intake air surge tank assembly and slide the clip to secure the hose.
  14. CONNECT VACUUM HOSE SUB-ASSEMBLY 
    1. Attach the 2 clamps and connect the vacuum hose sub-assembly to the intake air surge tank assembly.
  15. CONNECT NO. 5 ENGINE WIRE 
    1. Attach the 4 clamps to connect the No. 5 engine wire to the intake air surge tank assembly.
  16. CONNECT ENGINE WIRE 
    1. Connect the 7 connectors.
    2. Attach the 6 clamps.
    3. Install the 2 bolts.

      Torque: 10 N.m (102 kgf/cm, 7 ft.lbf) 

    4. Connect the 5 connectors.
      GTY812426Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Bolt (A)
      *b Bolt (B)
      Bolt
      Connector
      Nut
    5. Attach the 4 clamps.
    6. Install the bolt (A), (B) and nut.

      for bolt (A) 

      Torque: 10 N.m (102 kgf/cm, 7 ft.lbf) 

      for bolt (B) and nut 

      Torque: 12 N.m (122 kgf/cm, 9 ft.lbf) 

    7. Attach the fuel tube sub-assembly to the engine wire.
    8. Connect the 17 connectors.
    9. Attach the 4 clamps.
    10. Install the 2 bolts and 4 nuts.

      Torque: 10 N.m (102 kgf/cm, 7 ft.lbf) 

  17. INSTALL NO. 2 ENGINE UNDER COVER ASSEMBLY 

    Refer to PROCEDURE - Step 133 [03/2017 - 06/2019] , or refer to PROCEDURE - Step 133 [06/2019 - 05/2023]

  18. INSTALL INJECTOR DRIVER 

    Refer to PROCEDURE - Step 1

  19. INSTALL PURGE VSV 

    Refer to PROCEDURE - Step 1

  20. INSTALL AIR CLEANER HOSE CLAMP 
    1. Attach the clamp and install the air cleaner hose clamp.
  21. INSTALL NO. 2 INTAKE AIR CONNECTOR PIPE 
    1. Install the No. 2 intake air connector pipe to the No. 3 intake air connector pipe, and slide the clamp to secure the hose.
    2. Install a blot.

      Torque: 5.0 N.m (51 kgf/cm, 4 ft.lbf) 

    3. Attach the air cleaner hose clamp.
  22. INSTALL INTAKE AIR SOUND CREATOR 
    1. Install the intake air sound creator with the 2 bolts and hose clamp.

      for bolt 

      Torque: 5.0 N.m (51 kgf/cm, 44 in.lbf) 

      for hose clamp 

      Torque: 2.0 N.m (20 kgf/cm, 18 in.lbf) 

  23. INSTALL INTAKE AIR CONNECTOR PIPE 
    1. Install the intake air connector pipe with the bolt and hose clamp.

      for bolt 

      Torque: 5.0 N.m (51 kgf/cm, 44 in.lbf) 

      for hose clamp 

      Torque: 4.0 N.m (41 kgf/cm, 35 in.lbf) 

  24. INSTALL AIR CLEANER WITH ELEMENT ASSEMBLY LH 

    Refer to PROCEDURE - Step 97 [03/2017 - 06/2019] , or refer to PROCEDURE - Step 97 [06/2019 - 05/2023]

  25. INSTALL AIR CLEANER WITH ELEMENT ASSEMBLY RH 

    Refer to PROCEDURE - Step 96 [03/2017 - 06/2019] , or refer to PROCEDURE - Step 96 [06/2019 - 05/2023]

  26. INSTALL RADIATOR SUPPORT TO CROSS MEMBER BRACE SUB-ASSEMBLY RH 

    Refer to PROCEDURE - Step 45

  27. INSTALL RADIATOR SUPPORT TO CROSS MEMBER BRACE SUB-ASSEMBLY LH 

    Refer to PROCEDURE - Step 46

  28. INSTALL THROTTLE BODY WITH MOTOR ASSEMBLY 

    Refer to INSTALLATION [03/2017 - ]

  29. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 
    NOTE:

    When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

    Refer to INITIALIZATION [03/2017 - 04/2020] , or refer to INITIALIZATION [04/2020 - 05/2023]

  30. INSPECT FOR FUEL LEAK 

    Refer to PROCEDURE - Step 1

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