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Home >> Lexus >> 2019 >> NX 300 Base, AWD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical - Service Information (2 Of 2) >> Engine Unit >> Disassembly [09/2015 - ] >> Procedure

Disassembly [09/2015 - ]: Procedure

  1. REMOVE FUEL PUMP PROTECTOR 

    Refer to PROCEDURE - Step 2 [09/2015 - 09/2017] , or refer to PROCEDURE - Step 2 [09/2017 - ]

  2. REMOVE BRACKET 

    Refer to PROCEDURE - Step 3 [09/2015 - 09/2017] , or refer to PROCEDURE - Step 3 [09/2017 - ]

  3. REMOVE NO. 1 FUEL PIPE SUB-ASSEMBLY (for High Pressure) 

    Refer to PROCEDURE - Step 5 [09/2015 - 09/2017] , or refer to PROCEDURE - Step 5 [09/2017 - ]

  4. REMOVE FUEL DELIVERY PIPE (for Port Injection) 

    Refer to PROCEDURE - Step 3 [09/2015 - ]

  5. REMOVE FUEL INJECTOR ASSEMBLY (for Port Injection) 

    Refer to PROCEDURE - Step 4 [09/2015 - ]

  6. REMOVE FUEL DELIVERY PIPE SUB-ASSEMBLY (for Direct Injection) 

    Refer to PROCEDURE - Step 3 [09/2015 - ]

  7. REMOVE FUEL INJECTOR SET (for Direct Injection) 

    Refer to PROCEDURE - Step 4 [09/2015 - ]

  8. REMOVE FUEL INJECTOR SEAL (for Direct Injection) 

    Refer to PROCEDURE - Step 5 [09/2015 - ]

  9. REMOVE FUEL PUMP ASSEMBLY (for High Pressure) 

    Refer to PROCEDURE - Step 6 [09/2015 - 09/2017] , or refer to PROCEDURE - Step 6 [09/2017 - ]

  10. REMOVE VACUUM PUMP ASSEMBLY 

    Refer to PROCEDURE - Step 4 [10/2014 - ]

  11. REMOVE ENGINE OIL LEVEL DIPSTICK GUIDE 

    Refer to PROCEDURE - Step 6 [10/2014 - ]

  12. REMOVE NO. 3 EXHAUST MANIFOLD HEAT INSULATOR 

    Refer to PROCEDURE - Step 7 [10/2014 - ]

  13. REMOVE NO. 4 EXHAUST MANIFOLD HEAT INSULATOR 

    Refer to PROCEDURE - Step 8 [10/2014 - ]

  14. REMOVE NO. 1 WATER BY-PASS PIPE 

    Refer to PROCEDURE - Step 9 [10/2014 - ]

  15. REMOVE NO. 4 WATER BY-PASS PIPE 
    1. Slide the clamp and disconnect the No. 4 water by-pass hose from the oil cooler assembly.
      GTY505589Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 2 nuts, bolt, No. 4 water by-pass pipe and gasket.
  16. REMOVE OIL PRESSURE SWITCHING VALVE ASSEMBLY 

    Refer to PROCEDURE - Step 6 [10/2014 - ]

  17. REMOVE WATER INLET HOUSING 

    Refer to PROCEDURE - Step 11 [10/2014 - ]

  18. REMOVE THERMOSTAT (for Cylinder Block) 

    Refer to PROCEDURE - Step 12 [10/2014 - ]

  19. REMOVE SPARK PLUG 

    Refer to PROCEDURE - Step 3 [10/2014 - ]

  20. REMOVE KNOCK SENSOR 

    Refer to PROCEDURE - Step 2 [10/2014 - ]

  21. REMOVE ENGINE COOLANT TEMPERATURE SENSOR 

    Refer to PROCEDURE - Step 13 [10/2014 - ]

  22. REMOVE OIL PRESSURE SENDER GAUGE ASSEMBLY 

    Refer to PROCEDURE - Step 1 [10/2014 - ]

  23. REMOVE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY 

    Refer to PROCEDURE - Step 2 [10/2014 - ]

  24. REMOVE CRANKSHAFT POSITION SENSOR 

    Refer to PROCEDURE - Step 1 [10/2014 - ]

  25. REMOVE PCV VALVE SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 2 [10/2014 - ]

  26. REMOVE NO. 1 PCV CASE 
    1. Remove the 6 bolts and 2 nuts.
      GTY502106Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the No. 1 PCV case by prying between the No. 1 PCV case and cylinder block sub-assembly with a screwdriver.
      GTY502107Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Be careful not to damage the contact surfaces of the cylinder block sub-assembly.
      • Do not reuse the No. 1 PCV case.

      HINT: 

      Tape the screwdriver tip before use.

  27. REMOVE CRANKSHAFT PULLEY ASSEMBLY 
    1. Using SST, hold the crankshaft pulley assembly and loosen the crankshaft pulley set bolt until 2 or 3 threads are screwed into the crankshaft.
      • SST: 09213-54015 
      • SST: 09330-00021 
      GTY506365Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Hold
      Turn

      HINT: 

      Part number of installation bolt for SST (crankshaft pulley holding tool): 91551-80650 (quantity: 2)

    2. Using SST and the crankshaft pulley set bolt, remove the crankshaft pulley assembly.
      • SST: 09950-50013 
        1. 09951-05010
        2. 09952-05010
        3. 09953-05020
        4. 09954-05011
        5. 09957-04010
      GTY505045Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Crankshaft Pulley Set Bolt
      *a Hold
      Turn

      HINT: 

      Apply lubricant to the threads and end of SST.

  28. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 12 [09/2015 - ]

  29. REMOVE SPARK PLUG TUBE GASKET 
    NOTE:

    Be sure not to disconnect the PCV hose or the No. 4 PCV hose from the cylinder head cover sub-assembly.

    1. Remove the spark plug tube gasket with a screwdriver.
      GTY510103Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Protective Tape
      NOTE:

      Be careful not to damage the cylinder head cover sub-assembly.

      HINT: 

      Tape the screwdriver tip before use.

  30. REMOVE TRANSVERSE ENGINE MOUNTING BRACKET 

    Refer to PROCEDURE - Step 17 [09/2015 - ]

  31. REMOVE CAMSHAFT TIMING OIL CONTROL SOLENOID ASSEMBLY 

    Refer to PROCEDURE - Step 1 [10/2014 - ]

  32. REMOVE TIMING CHAIN COVER ASSEMBLY 

    Refer to PROCEDURE - Step 20 [09/2015 - ]

  33. REMOVE TIMING GEAR CASE OR TIMING CHAIN CASE OIL SEAL 

    Refer to PROCEDURE - Step 21 [09/2015 - ]

  34. REMOVE TIMING CHAIN COVER PLATE 
    1. Remove the 4 bolts, timing chain cover plate and gasket.
      GTY502060Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  35. SET NO. 1 CYLINDER TO TDC/COMPRESSION 
    1. Temporarily install the crankshaft pulley set bolt.
    2. Rotate the crankshaft clockwise so that the timing marks on the camshaft timing gear assembly and camshaft timing exhaust gear assembly and the crankshaft pulley set key of the crankshaft timing sprocket are as shown in the illustration.
      GTY509568Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Crankshaft Pulley Set Key - -
      *a Approximately 7° *b Approximately 32°
      *c Timing Mark - -

      HINT: 

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

    3. Remove the crankshaft pulley set bolt.
  36. REMOVE NO. 1 CHAIN TENSIONER ASSEMBLY 
    1. Allow the plunger to extend slightly, and then rotate the stopper plate counterclockwise to release the lock. Once the lock is released, push the plunger into the No. 1 chain tensioner assembly.
      GTY496560Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Stopper Plate
      *b Plunger
    2. Move the stopper plate clockwise to set the lock, and then insert a pin into the stopper plate hole.
      GTY512229Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Pin
    3. Remove the nut, bolt, No. 1 chain tensioner assembly and gasket.
      GTY502073Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  37. REMOVE TIMING CHAIN GUIDE 
    1. Remove the bolt and timing chain guide.
      GTY518504Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  38. REMOVE CHAIN TENSIONER SLIPPER 
    1. Remove the bolt and chain tensioner slipper.
      GTY518507Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  39. REMOVE CHAIN SUB-ASSEMBLY 
  40. REMOVE NO. 1 CHAIN VIBRATION DAMPER 
    1. Remove the 2 bolts and No. 1 chain vibration damper.
      GTY502070Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  41. REMOVE CRANKSHAFT TIMING SPROCKET 
    1. Remove the crankshaft timing sprocket from the crankshaft.
      GTY502082Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  42. REMOVE CAMSHAFT TIMING GEAR ASSEMBLY 
    1. Hold hexagonal portion of the camshaft with a wrench and remove the camshaft timing gear bolt and camshaft timing gear assembly.
      GTY508090Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Hold
      Turn
      NOTE:
      • Be careful not to damage the camshaft housing sub-assembly or spark plug tube with the wrench.
      • Do not disassemble the camshaft timing gear assembly.
  43. REMOVE CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY 
    1. Hold hexagonal portion of the No. 2 camshaft with a wrench and remove the bolt and camshaft timing exhaust gear assembly.
      GTY503581Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Hold
      Turn
      NOTE:
      • Be careful not to damage the camshaft housing sub-assembly or spark plug tube with the wrench.
      • Do not disassemble the camshaft timing exhaust gear assembly.
  44. REMOVE OIL PIPE SUB-ASSEMBLY 
    1. Remove the bolt and oil pipe sub-assembly.
      GTY501916Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  45. REMOVE CAMSHAFT HOUSING SUB-ASSEMBLY 
    1. Uniformly loosen and remove the 22 bearing cap bolts in the sequence shown in the illustration.
      Fig 1: Camshaft Housing Sub-Assembly Loosening Sequence
      GTY510749Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the camshaft housing sub-assembly by prying between the cylinder head sub-assembly and camshaft housing sub-assembly with a screwdriver.
      GTY518474Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Be careful not to damage the contact surfaces of the cylinder head sub-assembly and camshaft housing sub-assembly.

      HINT: 

      Tape the screwdriver tip before use.

  46. REMOVE NO. 3 WATER BY-PASS PIPE 
    1. Slide the clamp and disconnect the No. 6 water by-pass hose from the cylinder head sub-assembly.
      GTY501911Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 3 bolts, No. 3 water by-pass pipe and gasket.
  47. REMOVE CAMSHAFT BEARING CAP 
    1. Remove the 11 bearing cap bolts in the sequence shown in the illustration.
      Fig 2: Camshaft Bearing Cap Loosening Sequence
      GTY510286Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Remove the 4 camshaft bearing caps.

      HINT: 

      Arrange the removed parts in the correct order.

  48. REMOVE OIL CONTROL VALVE FILTER 
    1. Remove the oil control valve filter from the No. 1 camshaft bearing cap.
      GTY501913Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  49. REMOVE CAMSHAFT 
    1. Remove the camshaft from the camshaft housing sub-assembly.
  50. REMOVE NO. 2 CAMSHAFT 
    1. Remove the No. 2 camshaft from the camshaft housing sub-assembly.
  51. REMOVE NO. 1 CAMSHAFT BEARING 
    1. Remove the No. 1 camshaft bearing from the No. 1 camshaft bearing cap.
      GTY501921Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  52. REMOVE NO. 2 CAMSHAFT BEARING 
    1. Remove the No. 2 camshaft bearing from the camshaft housing sub-assembly.
      GTY501923Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  53. REMOVE NO. 1 VALVE ROCKER ARM SUB-ASSEMBLY 
    1. Remove the 16 No. 1 valve rocker arm sub-assemblies from the cylinder head sub-assembly.

      HINT: 

      Arrange the removed parts in the correct order.

  54. REMOVE VALVE LASH ADJUSTER ASSEMBLY 
    1. Remove the 16 valve lash adjuster assemblies from the cylinder head sub-assembly.

      HINT: 

      Arrange the removed parts in the correct order.

  55. REMOVE VALVE STEM CAP 
    1. Remove the 16 valve stem caps from the cylinder head sub-assembly.

      HINT: 

      Arrange the removed parts in the correct order.

  56. REMOVE CYLINDER HEAD SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 31 [10/2014 - ]

  57. REMOVE CYLINDER HEAD GASKET 

    Refer to PROCEDURE - Step 32 [10/2014 - ]

  58. REMOVE CYLINDER BLOCK WATER JACKET SPACER 
    1. Remove the cylinder block water jacket spacer from the cylinder block sub-assembly.
      GTY501899Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

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

  59. REMOVE OIL FILTER CAP ASSEMBLY 

    Refer to PROCEDURE - Step 2 [10/2014 - 05/2018] , or refer to PROCEDURE - Step 2 [05/2018 - ]

  60. REMOVE OIL FILTER BRACKET CLIP 
    1. Remove the oil filter bracket clip from the stiffening crankcase assembly.
      GTY501906Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  61. REMOVE OIL COOLER ASSEMBLY 

    Refer to PROCEDURE - Step 4 [10/2014 - ]

  62. REMOVE OIL PAN DRAIN PLUG 
    1. Remove the oil pan drain plug and gasket from the oil pan sub-assembly.
  63. REMOVE OIL PAN SUB-ASSEMBLY 
    1. Remove the 11 bolts and 2 nuts.
      GTY501905Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Insert the blade of an oil pan seal cutter between the oil pan sub-assembly and stiffening crankcase assembly, cut off the applied sealer and remove the oil pan sub-assembly.
      GTY145991Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:
      • Be careful not to damage the contact surfaces of the stiffening crankcase assembly and oil pan sub-assembly.
      • Be careful not to damage the stiffening crankcase assembly flange.
  64. REMOVE ENGINE OIL LEVEL SENSOR 

    Refer to PROCEDURE - Step 7 [10/2014 - ]

  65. REMOVE OIL STRAINER SUB-ASSEMBLY 
    1. Remove the 3 bolts, oil strainer sub-assembly and gasket.
      GTY501903Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  66. REMOVE NO. 1 OIL PAN BAFFLE PLATE 
    1. Remove the 5 bolts and No. 1 oil pan baffle plate.
      GTY501908Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  67. INSPECT ENGINE BALANCER ASSEMBLY BACKLASH 
    1. Using a dial indicator, measure the backlash of the crankshaft and balance shaft as shown in the illustration.

      Standard backlash

      0.05 to 0.20 mm (0.00197 to 0.00787 in.)

      Maximum backlash

      0.20 mm (0.00787 in.)

      GTY501909Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      If the backlash is more than the maximum, replace the engine balancer assembly.

  68. REMOVE ENGINE BALANCER ASSEMBLY 
    1. Remove the 7 bolts and engine balancer assembly.
      GTY501888Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Do not disassemble the engine balancer assembly.

  69. REMOVE ENGINE OIL TEMPERATURE SENSOR 

    Refer to PROCEDURE - Step 4 [10/2014 - ]

  70. REMOVE STIFFENING CRANKCASE ASSEMBLY 
    1. Remove the 8 bolts.
      GTY518467Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Using a screwdriver, remove the stiffening crankcase assembly by prying between the stiffening crankcase assembly and cylinder block sub-assembly at the places shown in the illustration.
      GTY501889Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      NOTE:

      Be careful not to damage the contact surfaces of the cylinder block sub-assembly and stiffening crankcase assembly.

      HINT: 

      Tape the screwdriver tip before use.

  71. REMOVE REAR ENGINE OIL SEAL 
    1. Remove the rear engine oil seal from the cylinder block sub-assembly.
  72. REMOVE STUD BOLT 
    NOTE:

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

  73. REMOVE RING PIN 
    NOTE:

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

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