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Home >> Lexus >> 2018 >> GX 460 Base >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical (Service Information) >> Engine Unit >> Disassembly [08/2015 - ] >> Procedure

Disassembly [08/2015 - ]: Procedure

  1. REMOVE OIL FILTER ELEMENT 

    Refer to PROCEDURE - Step 4 [08/2015 - 08/2021] , or refer to PROCEDURE - Step 4 [08/2021 - ]

  2. REMOVE ENGINE OIL PRESSURE SWITCH ASSEMBLY 

    Refer to PROCEDURE - Step 3

  3. REMOVE OIL FILTER BRACKET SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 18 , or refer to PROCEDURE - Step 18 [08/2020 - ]

  4. REMOVE CRANKSHAFT PULLEY 

    Refer to PROCEDURE - Step 45 [08/2015 - 08/2020] , or refer to PROCEDURE - Step 45 [08/2020 - ]

  5. REMOVE OIL FILLER CAP SUB-ASSEMBLY 
    1. Remove the oil filler cap sub-assembly.
    2. Remove the gasket from the oil filler cap sub-assembly.
  6. REMOVE OIL FILLER CAP HOUSING 
    1. Remove the 2 bolts, oil filler cap housing and gasket.
      GTY576240Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. REMOVE SPARK PLUG 

    Refer to PROCEDURE - Step 6

  8. REMOVE KNOCK SENSOR 

    Refer to PROCEDURE - Step 3

  9. REMOVE VVT SENSOR 

    Refer to PROCEDURE - Step 4

  10. REMOVE CAMSHAFT POSITION SENSOR 

    Refer to PROCEDURE - Step 3

  11. REMOVE CRANKSHAFT POSITION SENSOR PROTECTOR 

    Refer to PROCEDURE - Step 1

  12. REMOVE CRANKSHAFT POSITION SENSOR 

    Refer to PROCEDURE - Step 2

  13. REMOVE ENGINE OIL LEVEL SENSOR 

    Refer to PROCEDURE - Step 6

  14. REMOVE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY 
    1. for Bank 1:

      Remove the 2 bolts and 2 camshaft oil control valve assemblies.

      GTY575953Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. for Bank 2:

      Remove the 2 bolts and 2 camshaft oil control valve assemblies.

      GTY575954Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  15. REMOVE CYLINDER BLOCK WATER DRAIN COCK SUB-ASSEMBLY 
    1. Remove the 2 water drain cock plugs from the cylinder block water drain cock sub-assemblies.
      GTY271361Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *A for LH Side
      *B for RH Side
    2. Remove the 2 cylinder block water drain cock sub-assemblies from the cylinder block sub-assembly.
  16. REMOVE WATER INLET HOUSING 

    Refer to PROCEDURE - Step 7

  17. REMOVE FRONT WATER BY-PASS JOINT 

    Refer to PROCEDURE - Step 35 [08/2015 - 08/2020] , or refer to PROCEDURE - Step 35 [08/2020 - ]

  18. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY LH 

    Refer to PROCEDURE - Step 43 [08/2015 - 08/2020] , or refer to PROCEDURE - Step 43 [08/2020 - ]

  19. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY RH 

    Refer to PROCEDURE - Step 44 [08/2015 - 08/2020] , or refer to PROCEDURE - Step 44 [08/2020 - ]

  20. REMOVE OIL CONTROL VALVE FILTER 
    1. for Bank 1:

      Remove the 3 bolts, cylinder head cover spacer, gasket and oil control valve filter.

      GTY615566Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Cylinder Head Cover Spacer
      *2 Gasket
      *3 Oil Control Valve Filter
    2. for Bank 2:

      Remove the 3 bolts, cylinder head cover spacer, gasket and oil control valve filter.

      GTY674573Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Cylinder Head Cover Spacer
      *2 Gasket
      *3 Oil Control Valve Filter
  21. REMOVE SPARK PLUG TUBE GASKET 
    1. Pry up the claws of the ventilation baffle plate.
      GTY618779Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Ventilation Baffle Plate Claw
      *b Protective Tape
      NOTE:

      Do not deform the claws of the ventilation baffle plate more than necessary.

    2. Using a screwdriver as shown in the illustration, deform each spark plug tube gasket inwards and remove the 8 spark plug tube gaskets from the cylinder head cover sub-assembly.
      NOTE:
      • As much as possible prevent the spark plug tube gaskets from being deformed.
      • Do not damage the cylinder head cover sub-assembly.
      • Make sure not to damage the spark plug tube gasket and cylinder head cover sub-assembly when inserting the screwdriver in the joint area.

      HINT: 

      If the cylinder head cover sub-assembly is damaged, smooth the surface with 400-grit sandpaper.

  22. REMOVE WATER PUMP ASSEMBLY 

    Refer to PROCEDURE - Step 9

  23. REMOVE V-RIBBED BELT TENSIONER ASSEMBLY 

    Refer to PROCEDURE - Step 39 [08/2015 - 08/2020] , or refer to PROCEDURE - Step 39 [08/2020 - ]

  24. REMOVE TIMING CHAIN COVER SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 46 [08/2015 - 08/2020] , or refer to PROCEDURE - Step 46 [08/2020 - ]

  25. REMOVE WATER INLET PIPE 

    Refer to PROCEDURE - Step 47 [08/2015 - 08/2020] , or refer to PROCEDURE - Step 47 [08/2020 - ]

  26. REMOVE FRONT CRANKSHAFT OIL SEAL 
    1. Place the timing chain cover sub-assembly on wooden blocks.
    2. Place the oil pump on a wooden block.
      GTY643965Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Wooden Block
      *b Protective Tape
    3. Using a screwdriver and wooden block, pry out the front crankshaft oil seal.
      NOTE:

      Do not damage the surface of the front crankshaft oil seal press fit hole.

      HINT: 

      Tape the screwdriver tip before use.

  27. SET NO. 1 CYLINDER TO TDC/COMPRESSION 
    1. Temporarily install the pulley set bolt.
    2. Rotate the crankshaft clockwise so that the timing marks on the crankshaft timing gear and camshaft timing gears are as shown in the illustration.

      HINT: 

      If the timing marks do not align, rotate the crankshaft clockwise again and align the timing marks.

      GTY684689Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Crankshaft Timing Gear Key - -
      *a Toward Ceiling *b Timing Mark Position
      *c Knock Pin Position *d Approximately 2°
      *e Approximately 45° *f Approximately 16°
      *g Approximately 18° *h Approximately 32°
      *i Timing Mark - -
  28. REMOVE NO. 1 CHAIN TENSIONER ASSEMBLY LH 

    See step  3

  29. REMOVE CHAIN TENSIONER SLIPPER LH 

    See step  4

  30. REMOVE NO. 1 CHAIN VIBRATION DAMPER LH 

    See step  5

  31. REMOVE NO. 1 CHAIN SUB-ASSEMBLY LH 

    See step  6

  32. REMOVE NO. 3 CHAIN TENSIONER ASSEMBLY 

    See step  7

  33. REMOVE NO. 1 CHAIN TENSIONER ASSEMBLY RH 

    See step  8

  34. REMOVE CHAIN TENSIONER SLIPPER RH 

    See step  9

  35. REMOVE NO. 1 CHAIN VIBRATION DAMPER RH 

    See step  10

  36. REMOVE NO. 1 CHAIN SUB-ASSEMBLY RH 

    See step  11

  37. REMOVE NO. 2 CHAIN TENSIONER ASSEMBLY 

    See step  12

  38. REMOVE CRANKSHAFT TIMING GEAR KEY 
    1. Using a screwdriver, remove the 2 crankshaft timing gear keys from the crankshaft.
      GTY176215Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  39. REMOVE CAMSHAFT BEARING CAP LH 

    See step  13

  40. REMOVE NO. 3 CAMSHAFT SUB-ASSEMBLY 

    See step  14

  41. REMOVE NO. 4 CAMSHAFT SUB-ASSEMBLY 

    See step  15

  42. REMOVE CAMSHAFT HOUSING SUB-ASSEMBLY LH 

    See step  16

  43. REMOVE CAMSHAFT BEARING CAP RH 

    See step  17

  44. REMOVE NO. 1 CAMSHAFT SUB-ASSEMBLY 

    See step  18

  45. REMOVE NO. 2 CAMSHAFT SUB-ASSEMBLY 

    See step  19

  46. REMOVE CAMSHAFT HOUSING SUB-ASSEMBLY RH 

    See step  20

  47. REMOVE NO. 1 VALVE ROCKER ARM SUB-ASSEMBLY 

    See step  3

  48. REMOVE VALVE LASH ADJUSTER ASSEMBLY 

    See step  4

  49. REMOVE VALVE STEM CAP 

    See step  5

  50. REMOVE CYLINDER HEAD SUB-ASSEMBLY LH 

    See step  6

  51. REMOVE NO. 2 CYLINDER HEAD GASKET 
  52. REMOVE CYLINDER HEAD SUB-ASSEMBLY 

    See step  8

  53. REMOVE CYLINDER HEAD GASKET 
  54. REMOVE CYLINDER BLOCK WATER JACKET SPACER 
    1. Remove the 2 cylinder block water jacket spacers from the cylinder block sub-assembly.
      GTY176217Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Be sure to remove the cylinder block water jacket spacers. If not, they may fall and become damaged when the cylinder block sub-assembly is inverted.

  55. REMOVE OIL RETURN PIPE GASKET 
    1. Using a screwdriver, pry out the oil return pipe gasket.
      GTY653315Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Protective Tape

      HINT: 

      Tape the screwdriver tip before use.

  56. REMOVE VENTILATION PIPE GASKET 
    1. Using a screwdriver, pry out the ventilation pipe gasket.
      GTY623267Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Protective Tape

      HINT: 

      Tape the screwdriver tip before use.

  57. REMOVE NO. 1 HEAT EXCHANGER COVER 
    1. Remove the 12 bolts and 2 nuts.
      GTY280631Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      Bolt
      Nut
    2. Remove the No. 1 heat exchanger cover by prying between the No. 1 heat exchanger cover and cylinder block sub-assembly with a screwdriver.
      GTY638920Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Protective Tape

      HINT: 

      Tape the screwdriver tip before use.

  58. REMOVE NO. 2 OIL PAN SUB-ASSEMBLY 
    1. Remove the 12 bolts and 2 nuts.
      GTY656186Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      Bolt
      Nut
    2. Insert the blade of an oil pan seal cutter between the oil pans. Cut through the applied sealer and remove the No. 2 oil pan sub-assembly.
      GTY145991Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Be careful not to damage the contact surfaces of the oil pans.

  59. REMOVE NO. 1 OIL PAN SUB-ASSEMBLY 
    1. Remove the 14 bolts and 2 nuts.
      GTY281016Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      Bolt
      Nut

      HINT: 

      Be sure to clean the bolts and stud bolts and check the threads for cracks or other damage.

    2. Remove the No. 1 oil pan sub-assembly by prying between the No. 1 oil pan sub-assembly and cylinder block sub-assembly with a screwdriver.
      GTY260675Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *A for LH Side
      *B for RH Side
      NOTE:

      Be careful not to damage the contact surfaces of the cylinder block sub-assembly and No. 1 oil pan sub-assembly.

      HINT: 

      Tape the screwdriver tip before use.

  60. REMOVE NO. 1 OIL PAN BAFFLE PLATE 
    1. Remove the 7 bolts and No. 1 oil pan baffle plate.
      GTY395026Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  61. REMOVE OIL STRAINER SUB-ASSEMBLY 
    1. Remove the 2 bolts, oil strainer sub-assembly and O-ring.
      GTY682122Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  62. REMOVE REAR ENGINE OIL SEAL RETAINER 
    1. Remove the 6 bolts and rear engine oil seal retainer.
      GTY496704Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Using a screwdriver, pry out the rear engine oil seal retainer.
      GTY654940Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      HINT: 

      Tape the screwdriver tip before use.

  63. REMOVE REAR CRANKSHAFT OIL SEAL 
    1. Place the rear engine oil seal retainer on wooden blocks.
      GTY467908Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *a Wooden Block
    2. Using a screwdriver and hammer, tap out the rear crankshaft oil seal.
  64. REMOVE OIL DRAIN PIPE SUB-ASSEMBLY 
    1. Remove the bolt and oil drain pipe sub-assembly.
      GTY505935Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the O-ring.
  65. REMOVE RING PIN 
    NOTE:

    It is not necessary to remove a ring pin unless it is being replaced.

  66. REMOVE STUD BOLT 
    NOTE:

    If a stud bolt is deformed or its threads are damaged, replace it.

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