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Home >> Lexus >> 2023 >> LX 600 Base >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical System - Service Information (1 Of 3) >> Camshaft >> Removal [12/2021 - ] >> Procedure

Removal [12/2021 - ]: Procedure

  1. REMOVE FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY 

    Refer to REMOVAL [12/2021 - ]

  2. REMOVE FAN SHROUD 

    Refer to REMOVAL [12/2021 - ]

  3. REMOVE FRONT WHEEL 

    Refer to REMOVAL [12/2021 - ]

  4. REMOVE FRONT FENDER APRON TRIM PACKING A 

    See step  15

  5. REMOVE FRONT FENDER APRON TRIM PACKING B 

    See step  16

  6. REMOVE FRONT FENDER APRON TRIM PACKING C 

    See step  17

  7. REMOVE FRONT FENDER APRON TRIM PACKING D 

    See step  18

  8. REMOVE REAR ENGINE SIDE UNDER COVER ASSEMBLY LH 

    See step  42

  9. REMOVE UPPER ENGINE SIDE UNDER COVER PLATE LH 

    See step  41

  10. REMOVE ENGINE SIDE UNDER COVER RH 

    See step  43

  11. REMOVE BATTERY 

    Refer to REMOVAL [12/2021 - ]

  12. REMOVE BATTERY CARRIER ASSEMBLY 

    See step  45

  13. DISCONNECT NO. 2 RADIATOR HOSE 

    Refer to PROCEDURE - Step 15

  14. DISCONNECT NO. 4 WATER BY-PASS HOSE 

    See step  38

  15. DISCONNECT NO. 4 WATER BY-PASS HOSE ASSEMBLY 
    See step  40
  16. DISCONNECT INLET HEATER WATER HOSE 
    See step  49
  17. DISCONNECT OUTLET HEATER WATER HOSE 

    See step  50

  18. DISCONNECT NO. 1 FUEL VAPOR FEED HOSE 

    See step  48

  19. DISCONNECT FUEL TUBE SUB-ASSEMBLY 
    See step  51
  20. REMOVE NO. 2 PCV HOSE 
    1. GTY1041519Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  21. REMOVE NO. 1 AIR INLET DUCT 
    1. GTY1041171Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  22. REMOVE FUEL TUBE SUB-ASSEMBLY 
    1. GTY1074784Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Disconnect the fuel tube sub-assembly.

        Refer to PRECAUTION [12/2021 - ]

      2. Detach the 2 clamps and remove the fuel tube sub-assembly.
  23. REMOVE NO. 2 AIR INLET DUCT 
    1. GTY1041173Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  24. REMOVE NO. 5 WATER BY-PASS PIPE 

    Refer to PROCEDURE - Step 9

  25. REMOVE NO. 6 WATER BY-PASS PIPE 
    1. GTY1042418Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  26. REMOVE NO. 2 V-BANK COVER BRACKET 
    1. GTY1042422Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  27. REMOVE FUEL INLET PIPE SUB-ASSEMBLY 
    1. GTY1042145Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  28. REMOVE INTERCOOLER COOLING WATER PIPE ASSEMBLY AND TURBO WATER HOSE 
    1. GTY1074608Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  29. REMOVE ENGINE OIL LEVEL DIPSTICK GUIDE 

    Refer to PROCEDURE - Step 2

  30. REMOVE PURGE VSV 

    Refer to PROCEDURE - Step 1

  31. REMOVE FUEL VAPOR FEED PIPE 
    1. GTY1042429Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  32. DISCONNECT AIR FUEL RATIO SENSOR 
    1. GTY1041964Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  33. REMOVE NO. 2 WIRING HARNESS CLAMP BRACKET 
    1. GTY1042449Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  34. DISCONNECT NO. 1 TURBO WATER PIPE SUB-ASSEMBLY 
    1. GTY1042049Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  35. REMOVE NO. 3 WATER BY-PASS PIPE 
    1. GTY1042009Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  36. REMOVE WIRE HARNESS CLAMP BRACKET 
    1. GTY1042051Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  37. REMOVE IGNITION COIL ASSEMBLY 
    Refer to PROCEDURE - Step 7
  38. REMOVE NO. 4 FUEL VAPOR FEED HOSE 
    1. GTY1042057Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  39. REMOVE VACUUM HOSE 
    1. GTY1042694Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  40. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY RH 
    1. GTY1075788Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the 2 No. 1 intercooler air guides from the cylinder head cover sub-assembly RH.
      2. Remove the 2 bolts and 2 camshaft position sensors.
        NOTE:

        If the camshaft position sensor has been struck or dropped, replace it.

      3. Remove the 13 bolts and cylinder head cover sub-assembly RH.
      4. Remove the camshaft bearing cap oil hole gasket RH.
      5. Remove the 7 gaskets and No. 1 cylinder head cover gasket RH.
  41. REMOVE SPARK PLUG TUBE GASKET RH 

    Refer to PROCEDURE - Step 37 [12/2021 - 10/2023] , or refer to PROCEDURE - Step 37 [10/2023 - ]

  42. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY LH 
    1. GTY1075819Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the 2 bolts and 2 camshaft position sensors.
        NOTE:

        If the camshaft position sensor has been struck or dropped, replace it.

      2. Remove the 13 bolts and cylinder head cover sub-assembly LH.
      3. Remove the camshaft bearing cap oil hole gasket LH.
      4. Remove the 5 gaskets and No. 1 cylinder head cover gasket LH.
  43. REMOVE SPARK PLUG TUBE GASKET LH 

    Refer to PROCEDURE - Step 40 [12/2021 - 10/2023] , or refer to PROCEDURE - Step 40 [10/2023 - ]

  44. REMOVE WATER INLET PIPE WITH WATER INLET HOSE 

    Refer to PROCEDURE - Step 20

  45. REMOVE WATER OUTLET PIPE WITH WATER BY-PASS JOINT 
    1. GTY1042172Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  46. REMOVE CAM TIMING OIL CONTROL SOLENOID ASSEMBLY RH (for Intake Side of Bank 1) 
    Refer to PROCEDURE - Step 7
  47. REMOVE CAM TIMING OIL CONTROL SOLENOID O-RING RH (for Intake Side of Bank 1) 
    Refer to PROCEDURE - Step 8
  48. REMOVE CAM TIMING OIL CONTROL SOLENOID ASSEMBLY RH (for Exhaust Side of Bank 1) 
    Refer to PROCEDURE - Step 9
  49. REMOVE CAM TIMING OIL CONTROL SOLENOID O-RING RH (for Exhaust Side of Bank 1) 
    Refer to PROCEDURE - Step 10
  50. REMOVE CAM TIMING OIL CONTROL SOLENOID ASSEMBLY LH (for Intake Side of Bank 2) 
    Refer to PROCEDURE - Step 5
  51. REMOVE CAM TIMING OIL CONTROL SOLENOID O-RING LH (for Intake Side of Bank 2) 
    Refer to PROCEDURE - Step 6
  52. REMOVE CAM TIMING OIL CONTROL SOLENOID ASSEMBLY LH (for Exhaust Side of Bank 2) 
    Refer to PROCEDURE - Step 7
  53. REMOVE CAM TIMING OIL CONTROL SOLENOID O-RING LH (for Exhaust Side of Bank 2) 
    Refer to PROCEDURE - Step 8
  54. REMOVE TIMING CHAIN COVER PLATE 
    1. GTY1041449Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  55. SET NO. 1 CYLINDER TO TDC/COMPRESSION (for Bank 1) 
    1. GTY1074943Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A For Bank 2 *B For Bank 1
      *a "0" Timing Mark *b Timing Mark (Cutout)
      *c Paint Mark *d Timing Mark
      1. Turn the crankshaft clockwise to align the timing mark (cutout) on the crankshaft pulley assembly with the "0" timing mark on the timing chain cover assembly.
      2. Place paint marks on the timing marks and sprockets of each camshaft timing gear and on the links of the chain.

        HINT: 

        Attach paint marks to the 2 chain links at the position where the timing mark of the camshaft timing gear is located and at the opposite position of the timing chain or belt cover sub-assembly.

  56. REMOVE NO. 1 CHAIN TENSIONER ASSEMBLY (for Bank 1) 
    1. GTY1075590Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Lever Hole *b Tensioner Hole
      *c Pin - -
      1. Turn the crankshaft approximately 30° counterclockwise so that there is some slack in the chain.

        HINT: 

        This prevents the valves and pistons from interfering with each other.

      2. Align the hole in the lever of the No. 1 chain tensioner assembly with the hole in the tensioner body as shown in the illustration, and then insert a pin with a diameter of 1.27 mm (0.0500 in.) into the hole.
    2. GTY1075562Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a "0" Timing Mark *b Timing Mark (Cutout)
      1. Turn the crankshaft clockwise to align the timing mark (cutout) on the crankshaft pulley assembly with the "0" timing mark on the timing chain cover assembly.
      2. Remove the 2 bolts and No. 1 chain tensioner assembly.
        NOTE:

        Do not drop the No. 1 chain tensioner assembly or bolts into the timing chain cover assembly.

  57. DISCONNECT NO. 1 CHAIN SUB-ASSEMBLY (for Bank 1) 
    1. GTY1075003Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a 95° to 100° - -
      1. Turn the crankshaft clockwise until it is in the position shown in the illustration so that there is some slack in the No. 1 chain sub-assembly between the banks.
        WARNING:

        As the camshafts turn suddenly, do not touch the camshafts or camshaft timing gears.

        HINT: 

        When turning the crankshaft, engine oil may spray out of the oil holes.

      2. Turn the crankshaft clockwise until it is in the position shown in the illustration so that the chain can be removed easily.
        NOTE:

        When turning the crankshaft, engine oil may spray out of the oil holes.

      3. Remove the No. 1 chain sub-assembly from the sprocket of the camshaft timing gear and set it on the gear.
        WARNING:

        As the camshaft may turn suddenly and pinch your fingers when the No. 1 chain sub-assembly is removed, pinch the No. 1 chain sub-assembly and lift it upward to remove it from the sprocket.

  58. REMOVE CAMSHAFT BEARING CAP (for Bank 1) 
    1. Fig 1: Camshaft Bearing Caps (For Bank 1) Loosening Sequence
      GTY1075707Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 2 Chain Tensioner Assembly - -
      *a Temporarily Bolt and Washer *b Part Removal
      *c Temporarily Bolt and Washer Installation *d No. 2 Chain Tensioner Assembly Chain Plunger
      1. Remove the bolts and bearing caps in the order shown in the illustration. Immediately after removing a bearing cap, install temporarily bolts and washers in the order shown in the illustration.

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

        NOTE:
        • Do not install the bearing caps when installing temporarily bolts and washers.
        • Be sure to follow the numerical order when performing this procedure.
        • Do not allow temporarily bolts or washers to contact the camshaft.
        • Do not drop temporarily bolts or washers into the cylinder head sub-assembly.

        HINT: 

        • Arrange the removed parts so that they can be reinstalled in their original locations.
        • Bolts for temporarily installing camshaft housing (8 bolts)
          Bolt diameter 8 mm (0.315 in.)
          Pitch 1.25
          Bolt length 40 mm (1.57 in.)
        • Washers for temporarily installing camshaft housing (16 washers)
          Washer thickness 2 mm (0.0787 in.)
          Washer hole diameter 12.5 mm (0.492 in.)
      2. While one person lifts up the intake camshaft sub-assembly RH and exhaust camshaft sub-assembly RH, have another person remove the No. 1 camshaft bearing cap.
        NOTE:

        Remove the No. 1 camshaft bearing cap while holding down the chain plunger of the No. 2 chain tensioner assembly.

  59. REMOVE EXHAUST CAMSHAFT SUB-ASSEMBLY RH 
    1. GTY1074432Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Lift up the rear of the exhaust camshaft sub-assembly RH so that it is at an angle.
      2. With the No. 2 chain sub-assembly raised, pass it out through the exhaust camshaft sub-assembly LH towards the front of the vehicle to remove it.
  60. REMOVE CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY RH (for Exhaust Side of Bank 1) 
    1. GTY1075205Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Hexagonal Portion - -
      1. Using SST, grip the hexagonal portion, and then secure SST and exhaust camshaft sub-assembly RH in a vise as shown in the illustration.
        • SST: 09212-31010 
        NOTE:
        • Do not damage the exhaust camshaft sub-assembly RH.
        • Never grip areas other than the hexagonal portion, as this may cause damage.
      2. Using a 5 mm hexagon socket wrench, remove the 3 bolts.
        NOTE:
        • Be careful not to damage the exhaust camshaft sub-assembly RH and camshaft timing exhaust gear assembly RH.
        • Do not disassemble the camshaft timing exhaust gear assembly RH.
      3. Remove the camshaft timing oil control valve assembly (exhaust camshaft timing gear bolt assembly) and camshaft timing exhaust gear assembly RH.
  61. REMOVE INTAKE CAMSHAFT SUB-ASSEMBLY RH 
    1. GTY1074909Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the No. 2 chain sub-assembly from the sprocket of the camshaft timing gear and set it on the gear.
      2. Lift up the rear end of the camshaft so that it is tilted to remove the No. 1 chain sub-assembly.
      3. Remove the intake camshaft sub-assembly RH.
  62. REMOVE CAMSHAFT TIMING INTAKE GEAR ASSEMBLY RH (for Intake Side of Bank 1) 
    1. GTY1075239Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Hexagonal Portion - -
      1. Using SST, grip the hexagonal portion, and then secure SST and intake camshaft sub-assembly RH in a vise as shown in the illustration.
        • SST: 09212-31010 
        NOTE:
        • Do not damage the intake camshaft sub-assembly RH.
        • Never grip areas other than the hexagonal portion, as this may cause damage.
      2. Using a 5 mm hexagon socket wrench, remove the 3 bolts.
        NOTE:
        • Be careful not to damage the intake camshaft sub-assembly RH and camshaft timing intake gear assembly RH.
        • Do not disassemble the camshaft timing intake gear assembly RH.
      3. Remove the camshaft timing oil control valve assembly (intake camshaft timing gear bolt assembly) and camshaft timing intake gear assembly RH.
  63. REMOVE TIMING CHAIN COVER PLATE 

    See step  54

  64. SET NO. 1 CYLINDER TO TDC/COMPRESSION (for Bank 2) 
    See step  55
  65. REMOVE NO. 1 CHAIN TENSIONER ASSEMBLY (for Bank 2) 
    See step  56
  66. DISCONNECT NO. 1 CHAIN SUB-ASSEMBLY (for Bank 2) 
    1. GTY1075920Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a 95° to 100° - -
      1. Turn the crankshaft clockwise until it is in the position shown in the illustration so that there is some slack in the No. 1 chain sub-assembly between the banks.
        WARNING:

        As the camshafts turn suddenly, do not touch the camshafts or camshaft timing gears.

        HINT: 

        When turning the crankshaft, engine oil may spray out of the oil holes.

      2. Turn the crankshaft clockwise until it is in the position shown in the illustration so that the chain can be removed easily.
        NOTE:

        When turning the crankshaft, engine oil may spray out of the oil holes.

      3. Remove the No. 1 chain sub-assembly from the sprocket of the camshaft timing gear and set it on the gear.
        WARNING:

        As the camshaft may turn suddenly and pinch your fingers when the No. 1 chain sub-assembly is removed, pinch the No. 1 chain sub-assembly and lift it upward to remove it from the sprocket.

  67. REMOVE CAMSHAFT BEARING CAP (for Bank 2) 
    1. Fig 2: Camshaft Bearing Caps (For Bank 2) Loosening Sequence
      GTY1075470Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Temporarily Bolt and Washer *b Part Removal
      *c Temporarily Bolt and Washer Installation - -
      1. Remove the bolts and bearing caps in the order shown in the illustration. Immediately after removing a bearing cap, install temporarily bolts and washers in the order shown in the illustration.

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

        NOTE:
        • Do not install the bearing caps when installing temporarily bolts and washers.
        • Be sure to follow the numerical order when performing this procedure.
        • Do not allow temporarily bolts or washers to contact the camshaft.
        • Do not drop temporarily bolts or washers into the cylinder head sub-assembly.

        HINT: 

        • Arrange the removed parts so that they can be reinstalled in their original locations.
        • Bolts for temporarily installing camshaft housing (8 bolts)
          Bolt diameter 8 mm (0.315 in.)
          Pitch 1.25
          Bolt length 40 mm (1.57 in.)
        • Washers for temporarily installing camshaft housing (16 washers)
          Washer thickness 2 mm (0.0787 in.)
          Washer hole diameter 12.5 mm (0.492 in.)
  68. REMOVE EXHAUST CAMSHAFT SUB-ASSEMBLY LH 
    1. GTY1074179Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Lift up the rear of the exhaust camshaft sub-assembly LH so that it is at an angle.
      2. With the No. 2 chain sub-assembly raised, pass it out through the exhaust camshaft sub-assembly LH towards the front of the vehicle to remove it.
  69. REMOVE CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY LH (for Exhaust Side of Bank 2) 
    1. GTY1074850Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Hexagonal Portion - -
      1. Using SST, grip the hexagonal portion, and then secure SST and exhaust camshaft sub-assembly LH in a vise as shown in the illustration.
        • SST: 09212-31010 
        NOTE:
        • Do not damage the exhaust camshaft sub-assembly LH.
        • Never grip areas other than the hexagonal portion, as this may cause damage.
      2. Using a 5 mm hexagon socket wrench, remove the 3 bolts.
        NOTE:
        • Be careful not to damage the exhaust camshaft sub-assembly LH and camshaft timing exhaust gear assembly LH.
        • Do not disassemble the camshaft timing exhaust gear assembly LH.
      3. Remove the camshaft timing oil control valve assembly (exhaust camshaft timing gear bolt assembly) and camshaft timing exhaust gear assembly LH.
  70. REMOVE INTAKE CAMSHAFT SUB-ASSEMBLY LH 
    1. GTY1075694Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the No. 2 chain sub-assembly from the sprocket of the camshaft timing gear and set it on the gear.
      2. Lift up the rear end of the camshaft so that it is tilted to remove the No. 1 chain sub-assembly.
      3. Remove the intake camshaft sub-assembly LH.
  71. REMOVE CAMSHAFT TIMING INTAKE GEAR ASSEMBLY LH (for Intake Side of Bank 2) 
    1. GTY1076010Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Hexagonal Portion - -
      1. Using SST, grip the hexagonal portion, and then secure SST and intake camshaft sub-assembly LH in a vise as shown in the illustration.
        • SST: 09212-31010 
        NOTE:
        • Do not damage the intake camshaft sub-assembly LH.
        • Never grip areas other than the hexagonal portion, as this may cause damage.
      2. Using a 5 mm hexagon socket wrench, remove the 3 bolts.
        NOTE:
        • Be careful not to damage the intake camshaft sub-assembly LH and camshaft timing intake gear assembly LH.
        • Do not disassemble the camshaft timing intake gear assembly LH.
      3. Remove the camshaft timing oil control valve assembly (intake camshaft timing gear bolt assembly) and camshaft timing intake gear assembly LH.