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Home >> Lexus >> 2021 >> LX 570 >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical (Service Information) >> Engine Unit >> Disassembly [09/2015 - ] >> Procedure

Disassembly [09/2015 - ]: Procedure

  1. REMOVE OIL PRESSURE SENDER GAUGE ASSEMBLY 

    Refer to PROCEDURE - Step 5

  2. REMOVE OIL FILTER ELEMENT 

    Refer to PROCEDURE - Step 4 [09/2015 - 08/2020] , or refer to PROCEDURE - Step 4 [08/2020 - ]

  3. REMOVE NO. 1 OIL COOLER BRACKET (w/ Oil Cooler) 

    Refer to PROCEDURE - Step 15

  4. REMOVE OIL FILTER BRACKET (w/ Oil Cooler) 

    Refer to PROCEDURE - Step 16

  5. REMOVE OIL FILTER BRACKET (w/o Oil Cooler) 

    Refer to PROCEDURE - Step 29

  6. REMOVE OIL FILLER CAP SUB-ASSEMBLY 
  7. REMOVE OIL FILLER CAP HOUSING 
    1. GTY573387Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the 2 bolts, filler cap housing and gasket.

  8. REMOVE SPARK PLUG 
    1. Using a 16 mm plug wrench, remove the 8 spark plugs.
  9. REMOVE VVT SENSOR 
    1. GTY611128Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      LH:

      Remove the 2 bolts and 2 VVT sensors.

    2. GTY611395Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      RH:

      Remove the 2 bolts and 2 VVT sensors.

  10. REMOVE CAMSHAFT POSITION SENSOR 
    1. GTY611673Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the bolt and camshaft position sensor.

  11. REMOVE CRANK POSITION SENSOR PROTECTOR 
    GTY573389Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the 2 bolts and sensor protector.
  12. REMOVE CRANKSHAFT POSITION SENSOR 
    1. GTY605282Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the bolt and crankshaft position sensor.

  13. REMOVE ENGINE OIL LEVEL SENSOR 

    Refer to PROCEDURE - Step 7

  14. REMOVE CAMSHAFT OIL CONTROL VALVE ASSEMBLY 
    1. GTY573388Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      LH:

      Remove the 2 bolts and 2 oil control valves.

    2. GTY611018Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      RH:

      Remove the 2 bolts and 2 oil control valves.

  15. REMOVE WATER PUMP PULLEY 

    Refer to PROCEDURE - Step 15

  16. REMOVE NO. 1 IDLER PULLEY SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 42

  17. REMOVE FLUID COUPLING BRACKET 

    Refer to PROCEDURE - Step 43

  18. REMOVE V-RIBBED BELT TENSIONER ASSEMBLY 

    Refer to PROCEDURE - Step 44

  19. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY LH 

    Refer to PROCEDURE - Step 46

  20. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY RH 

    Refer to PROCEDURE - Step 47

  21. REMOVE OIL CONTROL VALVE FILTER 
    GTY615553Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. LH:

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

    2. GTY621932Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      RH:

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

  22. REMOVE SPARK PLUG TUBE GASKET 
    GTY651163Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Bend the 4 ventilation baffle plate claws on the cylinder head cover to an angle of 90° or more.
    2. Using a screwdriver, pry out the gaskets.

      HINT: 

      Tape the screwdriver tip before use.

      NOTE:
      • Be careful not to damage the cylinder head cover.
      • Be careful not to damage the gasket when removing it, as the removed gasket needs to be used when installing a new one.
  23. REMOVE CRANKSHAFT PULLEY 

    Refer to PROCEDURE - Step 49

  24. REMOVE WATER PUMP ASSEMBLY 

    Refer to PROCEDURE - Step 16

  25. REMOVE TIMING CHAIN COVER SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 52

  26. REMOVE WATER INLET PIPE 

    Refer to PROCEDURE - Step 53

  27. REMOVE FRONT CRANKSHAFT OIL SEAL 
    1. GTY633683Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Place the timing chain cover on wooden blocks.

    2. Using a screwdriver and wooden block, pry out the oil seal.

      HINT: 

      Tape the screwdriver tip before use.

      NOTE:

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

  28. SET NO. 1 CYLINDER TO TDC/COMPRESSION 
    1. Temporarily install the crankshaft pulley bolt.
    2. Rotate the crankshaft clockwise so that the timing marks on the crankshaft timing sprocket 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.

      GTY647315Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  29. REMOVE NO. 1 CHAIN TENSIONER ASSEMBLY LH 
    1. Move the stopper plate clockwise to release the lock, and push the plunger deep into the tensioner.
      GTY618647Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Move the stopper plate counterclockwise to set the lock, and insert a hexagon wrench into the stopper plate hole.
      GTY641711Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. GTY580687Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the 2 bolts, chain tensioner and gasket.

  30. REMOVE NO. 1 CHAIN TENSIONER SLIPPER LH 
    GTY148649Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  31. REMOVE NO. 1 CHAIN VIBRATION DAMPER LH 
    GTY148650Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the 2 bolts and chain vibration damper.
  32. REMOVE NO. 1 CHAIN SUB-ASSEMBLY LH 
    GTY667589Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. While pushing down the No. 3 chain tensioner, insert a pin of 1.0 mm (0.0394 in.) into the hole to fix it in place.
    2. GTY683126Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Hold the hexagonal portion of the camshaft with a wrench and loosen the bolt.

      NOTE:
      • Be careful not to damage the cylinder head with the wrench.
      • Do not disassemble the camshaft timing gear.
    3. GTY623103Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Hold the hexagonal portion of the camshaft with a wrench and loosen the bolt.

      NOTE:

      Be careful not to damage the cylinder head with the wrench.

    4. Remove the 2 bolts. Then with the No. 1 and No. 2 chains still connected to the gears, remove the camshaft timing gear, camshaft timing exhaust gear and crankshaft timing sprocket LH.
    5. Remove the No. 1 and No. 2 chains from the gears.
  33. REMOVE NO. 3 CHAIN TENSIONER ASSEMBLY 
    GTY103396Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the 2 bolts and chain tensioner.
  34. REMOVE NO. 1 CHAIN TENSIONER ASSEMBLY RH 
    1. Move the stopper plate clockwise to release the lock, and push the plunger deep into the tensioner.
      GTY633098Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Move the stopper plate counterclockwise to set the lock, and insert a hexagon wrench into the stopper plate hole.
      GTY654700Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. GTY585934Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the 2 bolts and chain tensioner.

  35. REMOVE NO. 1 CHAIN TENSIONER SLIPPER RH 
    GTY584110Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  36. REMOVE NO. 1 CHAIN VIBRATION DAMPER RH 
    GTY611038Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the 2 bolts and vibration damper.
  37. REMOVE NO. 1 CHAIN SUB-ASSEMBLY RH 
    GTY635479Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. While raising up the No. 2 chain tensioner, insert a pin of 1.0 mm (0.0394 in.) into the hole to fix it in place.
    2. GTY684481Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Hold the hexagonal portion of the camshaft with a wrench and loosen the bolt.

      NOTE:
      • Be careful not to damage the cylinder head with the wrench.
      • Do not disassemble the camshaft timing gear.
    3. GTY658750Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Hold the hexagonal portion of the camshaft with a wrench and loosen the bolt.

      NOTE:

      Be careful not to damage the cylinder head with the wrench.

    4. Remove the 2 bolts. Then with the No. 1 and No. 2 chains still connected to the gears, remove the camshaft timing gear, camshaft timing exhaust gear and crankshaft timing sprocket RH.
    5. Remove the No. 1 and No. 2 chains from the gears.
  38. REMOVE NO. 2 CHAIN TENSIONER ASSEMBLY 
    GTY103397Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the 2 bolts and chain tensioner.
  39. REMOVE CRANKSHAFT TIMING GEAR KEY 
    GTY122372Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Using a screwdriver, remove the 2 timing gear keys from the crankshaft.
  40. REMOVE CAMSHAFT BEARING CAP LH 

    See step  73

  41. REMOVE CAMSHAFT HOUSING SUB-ASSEMBLY LH 

    See step  74

  42. REMOVE CAMSHAFT BEARING CAP RH 

    See step  75

  43. REMOVE CAMSHAFT HOUSING SUB-ASSEMBLY RH 

    See step  76

  44. REMOVE NO. 1 VALVE ROCKER ARM SUB-ASSEMBLY 
    1. Remove the 32 valve rocker arms from the cylinder heads.

      HINT: 

      Arrange the removed parts in the correct order.

  45. REMOVE VALVE LASH ADJUSTER ASSEMBLY 
    1. Remove the 32 valve lash adjusters from the cylinder heads.

      HINT: 

      Arrange the removed parts in the correct order.

  46. REMOVE VALVE STEM CAP 
    1. Remove the 32 valve stem caps from the cylinder heads.

      HINT: 

      Arrange the removed parts in the correct order.

  47. REMOVE CYLINDER HEAD SUB-ASSEMBLY LH 

    See step  9

  48. REMOVE CYLINDER HEAD SUB-ASSEMBLY RH 

    See step  10

  49. REMOVE CYLINDER BLOCK WATER JACKET SPACER 
    GTY147793Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the 2 water jacket spacers from the cylinder block.
      NOTE:

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

  50. REMOVE VENTILATION PIPE GASKET 
    1. GTY125859Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Using a screwdriver, pry out the ventilation pipe gasket.

      HINT: 

      Tape the screwdriver tip before use.

  51. REMOVE NO. 1 HEAT EXCHANGER COVER 
    1. GTY674979Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the 12 bolts and 2 nuts.

    2. GTY147923Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the heat exchanger by prying between the heat exchanger and cylinder block with a screwdriver.

      HINT: 

      Tape the screwdriver tip before use.

  52. REMOVE NO. 2 OIL PAN SUB-ASSEMBLY 
    1. GTY658743Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the 14 bolts and 2 nuts.

    2. GTY145991Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Insert the blade of oil pan seal cutter between the oil pans. Cut through the applied sealer and remove the No. 2 oil pan.

      NOTE:

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

  53. REMOVE NO. 1 OIL PAN SUB-ASSEMBLY 
    1. GTY663793Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the 14 bolts and 2 nuts.

      HINT: 

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

    2. GTY626055Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the oil pan by prying between the oil pan and cylinder block with a screwdriver.

      HINT: 

      Tape the screwdriver tip before use.

      NOTE:

      Be careful not to damage the contact surfaces of the cylinder block and oil pan.

  54. REMOVE NO. 1 OIL PAN BAFFLE PLATE 
    1. GTY610806Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the 7 bolts and baffle plate.

  55. REMOVE OIL STRAINER SUB-ASSEMBLY 
    1. GTY611536Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the 2 bolts, oil strainer and O-ring.

  56. REMOVE ENGINE REAR OIL SEAL RETAINER 
    1. GTY496704Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the 6 bolts and oil seal retainer.

    2. GTY623322Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Using a screwdriver, pry out the oil seal retainer.

      HINT: 

      Tape the screwdriver tip before use.

  57. REMOVE OIL DRAIN PIPE SUB-ASSEMBLY 
    1. GTY505935Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Remove the bolt and oil drain pipe.

    2. Remove the O-ring.
  58. REMOVE REAR CRANKSHAFT OIL SEAL 
    1. GTY621780Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Place the oil seal retainer on wooden blocks.

    2. Using a screwdriver and hammer, tap out the oil seal.
  59. REMOVE RING PIN 
    NOTE:

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

  60. REMOVE STUD BOLT 
    NOTE:

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

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