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Removal [12/2023 - ]: Procedure

WARNING: This page is about a different car, the 2024 Lexus TX 550h+. However, it is still accessible from the selected car via links, so may be relevant.
  1. INSTALL ENGINE ASSEMBLY TO ENGINE STAND 

    Refer to REMOVAL [12/2023 - ]

  2. REMOVE ENGINE HANGERS 
  3. DISCONNECT WATER BY-PASS HOSE 

    Refer to PROCEDURE - Step 13

  4. DISCONNECT NO. 2 WATER BY-PASS HOSE 

    Refer to PROCEDURE - Step 14

  5. REMOVE THROTTLE BODY WITH MOTOR ASSEMBLY 
    Refer to PROCEDURE - Step 15
  6. REMOVE THROTTLE BODY GASKET 

    Refer to PROCEDURE - Step 16

  7. REMOVE NO. 2 WATER BY-PASS PIPE 

    Refer to PROCEDURE - Step 13

  8. REMOVE WATER BY-PASS HOSE 

    Refer to PROCEDURE - Step 14

  9. DISCONNECT VENTILATION HOSE 

    Refer to PROCEDURE - Step 6

  10. REMOVE WATER BY-PASS HOSE SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 16

  11. REMOVE NO. 2 SURGE TANK STAY 

    Refer to PROCEDURE - Step 9

  12. REMOVE INTAKE AIR SURGE TANK ASSEMBLY 
    Refer to PROCEDURE - Step 10
  13. REMOVE AIR SURGE TANK TO INTAKE MANIFOLD GASKET 

    Refer to PROCEDURE - Step 11

  14. REMOVE NO. 1 FUEL HOSE 
    Refer to PROCEDURE - Step 20
  15. DISCONNECT WIRE HARNESS CLAMP BRACKET 

    Refer to PROCEDURE - Step 21

  16. REMOVE REAR ENGINE MOUNTING STAY RH 

    Refer to PROCEDURE - Step 22

  17. REMOVE INTAKE MANIFOLD 
    Refer to PROCEDURE - Step 22
  18. REMOVE NO. 1 INTAKE MANIFOLD TO HEAD GASKET 

    Refer to PROCEDURE - Step 23

  19. REMOVE FUEL PUMP PROTECTOR 

    Refer to PROCEDURE - Step 7

  20. REMOVE NO. 1 FUEL PIPE SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 10
  21. REMOVE FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY 

    Refer to PROCEDURE - Step 11

  22. REMOVE FUEL PUMP LIFTER ASSEMBLY 

    Refer to PROCEDURE - Step 13

  23. REMOVE FUEL PUMP SPACER GASKET 

    Refer to PROCEDURE - Step 12

  24. REMOVE NO. 1 ENGINE COVER 

    Refer to PROCEDURE - Step 30

  25. REMOVE VENTILATION HOSE 

    Refer to PROCEDURE - Step 31

  26. REMOVE NO. 2 VENTILATION HOSE 

    Refer to PROCEDURE - Step 32

  27. REMOVE IGNITION COIL ASSEMBLY 
    Refer to PROCEDURE - Step 3
  28. REMOVE ENGINE OIL LEVEL DIPSTICK GUIDE 

    Refer to PROCEDURE - Step 2

  29. REMOVE CAM TIMING OIL CONTROL SOLENOID ASSEMBLY (for Intake Side of Bank 1) 
    Refer to PROCEDURE - Step 4
  30. REMOVE CAM TIMING OIL CONTROL SOLENOID ASSEMBLY (for Exhaust Side of Bank 1) 
    Refer to PROCEDURE - Step 3
  31. REMOVE VVT SENSOR (for Intake Side of Bank 1) 
    Refer to PROCEDURE - Step 2
  32. REMOVE VVT SENSOR (for Exhaust Side of Bank 1) 
    Refer to PROCEDURE - Step 3
  33. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 30

  34. REMOVE SPARK PLUG TUBE GASKET 
    Refer to PROCEDURE - Step 32
  35. REMOVE CAM TIMING OIL CONTROL SOLENOID ASSEMBLY (for Exhaust Side of Bank 2) 
    Refer to PROCEDURE - Step 2
  36. REMOVE CAM TIMING OIL CONTROL SOLENOID ASSEMBLY (for Intake Side of Bank 2) 
    Refer to PROCEDURE - Step 9
  37. REMOVE VVT SENSOR (for Intake Side of Bank 2) 
    Refer to PROCEDURE - Step 2
  38. REMOVE VVT SENSOR (for Exhaust Side of Bank 2) 
    Refer to PROCEDURE - Step 3
  39. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY LH 

    Refer to PROCEDURE - Step 31

  40. REMOVE SPARK PLUG TUBE GASKET 
    Refer to PROCEDURE - Step 32
  41. REMOVE TIMING CHAIN COVER PLATE 

    Refer to PROCEDURE - Step 54

  42. SET NO. 1 CYLINDER TO TDC (COMPRESSION) 
    1. GTY1229540Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Timing Mark (Cutout) *b "0" Timing Mark
      1. Turn the crankshaft clockwise to align the timing mark (cutout) on the crankshaft pulley with the "0" timing mark on the timing chain cover assembly.
    2. GTY1241288Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A for Bank 1 *B for Bank 2
      *a Timing Mark *b Paint Mark
      1. Check that the timing marks of the camshaft timing gear assemblies are aligned with the timing marks of the camshaft bearing caps as shown in the illustration.

        HINT: 

        If the timing marks are not aligned, turn the crankshaft again to align the timing marks.

      2. Place paint marks on the timing marks and sprockets of each camshaft timing gear assembly and on the links of the chain sub-assembly.

        HINT: 

        Be sure to place the paint marks on 2 links of the chain sub-assembly and on the sprockets of the camshaft timing gear assemblies at the locations of the timing marks of the camshaft timing gear assemblies.

  43. REMOVE NO. 1 CHAIN TENSIONER ASSEMBLY 
    1. GTY1235731Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Stopper Plate Hole *b Tensioner Body Hole
      *c Pin *d Timing Mark (Cutout)
      *e "0" Timing Mark - -
      1. Turn the crankshaft approximately 30° counterclockwise so that there is some slack in the chain sub-assembly.

        HINT: 

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

      2. Align the hole in the stopper plate 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 1.0 mm (0.0394 in.) into the hole.
        NOTE:

        Check that the pin is locked.

      3. Turn the crankshaft clockwise to align the timing mark (cutout) on the crankshaft pulley with the "0" timing mark on the timing chain cover assembly.
      4. Remove the 2 bolts and No. 1 chain tensioner assembly from the cylinder head sub-assembly.
        NOTE:

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

  44. DISCONNECT CHAIN SUB-ASSEMBLY (for Bank 1) 
    1. GTY1232958Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a 5 to 10° - -
      1. Turn the crankshaft clockwise until it is in the position shown in the illustration so that there is some slack in the chain sub-assembly between the banks.
        WARNING:

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

        NOTE:

        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 sub-assembly can be removed easily.
        NOTE:

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

      3. Remove the chain sub-assembly from the sprocket of the camshaft timing gear assembly and set it on the camshaft timing gear assembly.
        WARNING:

        As the camshaft may turn suddenly and pinch your fingers when the chain sub-assembly is removed, pinch the chain sub-assembly and lift it upward to remove it from the sprocket.

  45. DISCONNECT NO. 2 CHAIN TENSIONER ASSEMBLY 
    1. GTY1237089Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  46. REMOVE CAMSHAFT TIMING GEAR BOLT (for Intake Side of Bank 1) 
    1. GTY1227812Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Hold - -
      Turn - -
      1. Hold the hexagonal portion of the camshaft with a wrench and remove the camshaft timing gear bolt from the camshaft timing gear assembly.
        NOTE:
        • Be careful not to damage the camshaft, camshaft housing sub-assembly RH or spark plug tube with the wrench.
        • If the camshaft timing gear bolt has been struck or dropped, replace it.
  47. REMOVE CAMSHAFT TIMING GEAR BOLT (for Exhaust Side of Bank 1) 
    1. GTY1236639Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Hold - -
      Turn - -
      1. Hold the hexagonal portion of the No. 2 camshaft with a wrench and remove the camshaft timing gear bolt from the camshaft timing exhaust gear assembly.
        NOTE:
        • Be careful not to damage the No. 2 camshaft, camshaft housing sub-assembly RH or spark plug tube with the wrench.
        • If the camshaft timing gear bolt has been struck or dropped, replace it.
  48. REMOVE CAMSHAFT BEARING CAP (for Bank 1) 
    1. GTY1233222Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Slide the camshaft timing gear assembly and camshaft timing exhaust gear assembly as shown in the illustration.
    2. Fig 1: Camshaft Bearing Cap (For Bank 1) Loosening Sequence
      GTY1231465Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Temporarily Bolt and Washer *b Part Removal
      *c Temporarily Bolt and Washer Installation - -
      1. Remove the bolts and camshaft bearing caps in the order shown in the illustration. Immediately after removing a camshaft 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 camshaft 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 (9 bolts)
          Diameter 8.0 mm (0.315 in.)
          Pitch 1.25
          Length 50 mm (1.97 in.)
        • Washers for temporarily installing camshaft housing (18 washers)
          Thickness 2.0 mm (0.0787 in.)
          Hole Diameter 12.5 mm (0.492 in.)
  49. REMOVE NO. 2 CAMSHAFT 
    1. GTY1233309Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. While lifting up the camshaft timing exhaust gear assembly, remove the No. 2 chain tensioner assembly.
      2. Lift up the rear of the No. 2 camshaft so that it is at an angle.
      3. Pull the No. 2 camshaft as shown in the illustration to remove it from the camshaft timing exhaust gear assembly.
  50. REMOVE CAMSHAFT 
    1. GTY1227710Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Lift up the rear of the camshaft so that it is at an angle.
      2. Pull the camshaft as shown in the illustration to remove it from the camshaft timing gear assembly.
  51. REMOVE CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY (for Bank 1) 
    1. GTY1241012Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  52. REMOVE CAMSHAFT TIMING GEAR ASSEMBLY (for Bank 1) 
    1. GTY1240426Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the camshaft timing gear assembly and No. 2 chain sub-assembly.
        NOTE:

        Do not drop the chain sub-assembly into the gap between the engine and timing chain cover assembly.

      2. Suspend the chain sub-assembly with a string or equivalent.
  53. DISCONNECT CHAIN SUB-ASSEMBLY (for Bank 2) 
    1. GTY1232217Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Timing Mark (Cutout) *b "0" Timing Mark
      1. Turn the crankshaft counterclockwise to align the timing mark (cutout) on the crankshaft pulley with the "0" timing mark on the timing chain cover assembly.
      2. Remove the chain sub-assembly from the sprocket of the camshaft timing gear assembly and set it on the camshaft timing gear assembly.
        WARNING:

        As the camshaft may turn suddenly and pinch your fingers when the chain sub-assembly is removed, pinch the chain sub-assembly and lift it upward to remove it from the sprocket.

  54. DISCONNECT NO. 3 CHAIN TENSIONER ASSEMBLY 
    1. GTY1237055Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  55. REMOVE CAMSHAFT TIMING GEAR BOLT (for Intake Side of Bank 2) 
    1. GTY1238793Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Hold - -
      Turn - -
      1. Hold the hexagonal portion of the No. 3 camshaft sub-assembly with a wrench and remove the camshaft timing gear bolt from the camshaft timing gear assembly.
        NOTE:
        • Be careful not to damage the No. 3 camshaft sub-assembly, camshaft housing sub-assembly LH or spark plug tube with the wrench.
        • If the camshaft timing gear bolt has been struck or dropped, replace it.
  56. REMOVE CAMSHAFT TIMING GEAR BOLT (for Exhaust Side of Bank 2) 
    1. GTY1236107Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Hold - -
      Turn - -
      1. Hold the hexagonal portion of the No. 4 camshaft sub-assembly with a wrench and remove the camshaft timing gear bolt from the camshaft timing exhaust gear assembly.
        NOTE:
        • Be careful not to damage the No. 4 camshaft sub-assembly, camshaft housing sub-assembly LH or spark plug tube with the wrench.
        • If the camshaft timing gear bolt has been struck or dropped, replace it.
  57. REMOVE CAMSHAFT BEARING CAP (for Bank 2) 
    1. GTY1232486Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Slide the camshaft timing gear assembly and camshaft timing exhaust gear assembly as shown in the illustration.
    2. Fig 2: Camshaft Bearing Cap (For Bank 2) Loosening Sequence
      GTY1230992Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Temporarily Bolt and Washer *b Part Removal
      *c Temporarily Bolt and Washer Installation - -
      1. Remove the bolts and camshaft bearing caps in the order shown in the illustration. Immediately after removing a camshaft 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 camshaft 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 LH.

        HINT: 

        • Arrange the removed parts so that they can be reinstalled in their original locations.
        • Bolts for temporarily installing camshaft housing (8 bolts)
          Diameter 8.0 mm (0.315 in.)
          Pitch 1.25
          Length 50 mm (1.97 in.)
        • Washers for temporarily installing camshaft housing (16 washers)
          Thickness 2.0 mm (0.0787 in.)
          Hole Diameter 12.5 mm (0.492 in.)
  58. REMOVE NO. 4 CAMSHAFT SUB-ASSEMBLY 
    1. GTY1236436Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. While lifting up the camshaft timing exhaust gear assembly, remove the No. 3 chain tensioner assembly.
      2. Lift up the rear of the No. 4 camshaft sub-assembly so that it is at an angle.
      3. Pull the No. 4 camshaft sub-assembly as shown in the illustration to remove it from the camshaft timing exhaust gear assembly.
  59. REMOVE NO. 3 CAMSHAFT SUB-ASSEMBLY 
    1. GTY1233865Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Lift up the rear of the No. 3 camshaft sub-assembly so that it is at an angle.
      2. Pull the No. 3 camshaft sub-assembly as shown in the illustration to remove it from the camshaft timing gear assembly.
  60. REMOVE CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY (for Bank 2) 
    1. GTY1240948Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  61. REMOVE CAMSHAFT TIMING GEAR ASSEMBLY (for Bank 2) 
    1. GTY1233992Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the camshaft timing gear assembly and No. 2 chain sub-assembly.
        NOTE:

        Do not drop the chain sub-assembly into the gap between the engine and timing chain cover assembly.

      2. Suspend the chain sub-assembly with a string or equivalent.
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