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Home >> Lexus >> 2023 >> NX 250 AWD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical System - Service Information (1 Of 4) >> Cylinder Head Gasket >> Removal [11/2021 - 03/2022] >> Procedure

Removal [11/2021 - 03/2022]: Procedure

  1. INSTALL ENGINE ASSEMBLY TO ENGINE STAND 

    Refer to REMOVAL [11/2021 - 03/2024]

  2. REMOVE ENGINE HANGERS 
  3. REMOVE V-RIBBED BELT 
    Refer to PROCEDURE - Step 2
  4. REMOVE GENERATOR ASSEMBLY 

    Refer to PROCEDURE - Step 5

  5. REMOVE COMPRESSOR ASSEMBLY WITH PULLEY 
    Refer to PROCEDURE - Step 6
  6. REMOVE NO. 2 ENGINE COVER 

    Refer to PROCEDURE - Step 2

  7. REMOVE V-RIBBED BELT TENSIONER ASSEMBLY 
    Refer to PROCEDURE - Step 6
  8. REMOVE NO. 2 WATER BY-PASS PIPE SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 8

  9. REMOVE FLOW SHUTTING VALVE (WATER BY-PASS HOSE ASSEMBLY) 

    Refer to PROCEDURE - Step 9

  10. REMOVE NO. 2 WATER HOSE CLAMP BRACKET 

    Refer to PROCEDURE - Step 10

  11. REMOVE NO. 1 EXHAUST MANIFOLD HEAT INSULATOR 
    Refer to PROCEDURE - Step 10
  12. REMOVE MANIFOLD STAY 
    Refer to PROCEDURE - Step 12
  13. REMOVE EXHAUST MANIFOLD (TWC: Front Catalyst) 
    Refer to PROCEDURE - Step 13
  14. REMOVE EXHAUST MANIFOLD TO HEAD GASKET 

    Refer to PROCEDURE - Step 14

  15. DISCONNECT NO. 6 WATER BY-PASS HOSE 

    Refer to PROCEDURE - Step 8

  16. REMOVE THROTTLE BODY WITH MOTOR ASSEMBLY 
    Refer to PROCEDURE - Step 9
  17. DISCONNECT NO. 5 WATER BY-PASS HOSE 
    Refer to PROCEDURE - Step 10
  18. REMOVE THROTTLE BODY GASKET 

    Refer to PROCEDURE - Step 11

  19. DISCONNECT NO. 3 WATER BY-PASS HOSE 

    Refer to PROCEDURE - Step 8

  20. DISCONNECT NO. 4 WATER BY-PASS HOSE 

    Refer to PROCEDURE - Step 9

  21. REMOVE EGR COOLER ASSEMBLY 

    Refer to PROCEDURE - Step 10

  22. REMOVE EGR VALVE GASKET 

    Refer to PROCEDURE - Step 11

  23. REMOVE NO. 1 EGR COOLER GASKET 

    Refer to PROCEDURE - Step 12

  24. REMOVE NO. 1 EGR PIPE SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 3
  25. REMOVE EGR VALVE ADAPTER GASKET 

    Refer to PROCEDURE - Step 4

  26. REMOVE EGR INLET GASKET 

    Refer to PROCEDURE - Step 5

  27. REMOVE NO. 4 WATER BY-PASS HOSE 

    Refer to PROCEDURE - Step 7

  28. REMOVE EGR VALVE ASSEMBLY 
    Refer to PROCEDURE - Step 8
  29. REMOVE NO. 3 WATER BY-PASS PIPE 
    Refer to PROCEDURE - Step 29
  30. REMOVE NO. 2 WATER BY-PASS PIPE 
    Refer to PROCEDURE - Step 9
  31. REMOVE INTAKE MANIFOLD 
    Refer to PROCEDURE - Step 11
  32. REMOVE NO. 1 INTAKE MANIFOLD TO HEAD GASKET 

    Refer to PROCEDURE - Step 12

  33. DISCONNECT FUEL TUBE SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 5
  34. REMOVE NO. 1 FUEL PIPE SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 6
  35. REMOVE FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY 
    Refer to PROCEDURE - Step 7
  36. REMOVE FUEL PUMP SPACER GASKET 

    Refer to PROCEDURE - Step 8

  37. REMOVE FUEL PUMP LIFTER ASSEMBLY 

    Refer to PROCEDURE - Step 9

  38. REMOVE NO. 7 WATER BY-PASS HOSE 

    Refer to PROCEDURE - Step 38

  39. REMOVE FUEL DELIVERY PIPE SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 4
  40. REMOVE NO. 1 DELIVERY PIPE SPACER 

    Refer to PROCEDURE - Step 5

  41. REMOVE INJECTOR VIBRATION INSULATOR 

    Refer to PROCEDURE - Step 6

  42. REMOVE NO. 5 ENGINE WIRE 

    Refer to PROCEDURE - Step 7

  43. REMOVE PORT FUEL INJECTOR ASSEMBLY 
    Refer to PROCEDURE - Step 8
  44. DISCONNECT WIRE HARNESS 

    Refer to PROCEDURE - Step 2

  45. REMOVE FUEL DELIVERY PIPE 
    Refer to PROCEDURE - Step 3
  46. REMOVE DIRECT FUEL INJECTOR ASSEMBLY 
    Refer to PROCEDURE - Step 4
  47. REMOVE NOZZLE HOLDER CLAMP 

    Refer to PROCEDURE - Step 5

  48. REMOVE NO. 3 FUEL INJECTOR BACK-UP RING 
    Refer to PROCEDURE - Step 6
  49. REMOVE NO. 1 FUEL INJECTOR BACK-UP RING 

    Refer to PROCEDURE - Step 7

  50. REMOVE C-RING 

    Refer to PROCEDURE - Step 8

  51. REMOVE INJECTOR VIBRATION INSULATOR 

    Refer to PROCEDURE - Step 9

  52. REMOVE FUEL INJECTOR SEAL 
    Refer to PROCEDURE - Step 10
  53. REMOVE IGNITION COIL ASSEMBLY 
    Refer to PROCEDURE - Step 2
  54. REMOVE ENGINE OIL LEVEL DIPSTICK GUIDE 
    Refer to PROCEDURE - Step 55
  55. REMOVE PURGE VALVE (PURGE VSV) 

    Refer to PROCEDURE - Step 3

  56. REMOVE OIL PRESSURE CONTROL VALVE ASSEMBLY 
    Refer to PROCEDURE - Step 2
  57. REMOVE TIMING GEAR COVER INSULATOR 
    Refer to PROCEDURE - Step 7
  58. REMOVE CAM TIMING OIL CONTROL SOLENOID ASSEMBLY 
    Refer to PROCEDURE - Step 4
  59. REMOVE CAM TIMING OIL CONTROL SOLENOID O-RING 
    Refer to PROCEDURE - Step 5
  60. REMOVE CAM TIMING CONTROL MOTOR WITH EDU ASSEMBLY 
    Refer to PROCEDURE - Step 6
  61. REMOVE CAM TIMING CONTROL MOTOR O-RING 

    Refer to PROCEDURE - Step 7

  62. REMOVE VACUUM PUMP ASSEMBLY 
    Refer to PROCEDURE - Step 3
  63. REMOVE NO. 1 VACUUM PUMP O RING 

    Refer to PROCEDURE - Step 4

  64. REMOVE ENGINE MOUNTING BRACKET RH 
    Refer to PROCEDURE - Step 34
  65. DISCONNECT NO. 1 WATER BY-PASS HOSE 
    1. GTY996098Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  66. DISCONNECT NO. 2 WATER BY-PASS HOSE 
    1. GTY1001162Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  67. REMOVE CRANKSHAFT PULLEY ASSEMBLY 
    Refer to PROCEDURE - Step 25
  68. REMOVE WATER OUTLET 
    Refer to PROCEDURE - Step 26
  69. REMOVE WATER OUTLET GASKET 

    Refer to PROCEDURE - Step 27

  70. REMOVE WATER BY-PASS OUTLET 
    Refer to PROCEDURE - Step 28
  71. REMOVE WATER OUTLET PIPE GASKET 

    Refer to PROCEDURE - Step 29

  72. REMOVE CAMSHAFT POSITION SENSOR (for Intake Side) 
    Refer to PROCEDURE - Step 2
  73. REMOVE CAMSHAFT POSITION SENSOR (for Exhaust Side) 
    Refer to PROCEDURE - Step 3
  74. REMOVE CYLINDER HEAD COVER SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 32
  75. REMOVE SPARK PLUG TUBE GASKET 
    Refer to PROCEDURE - Step 33
  76. REMOVE NO. 2 TIMING CHAIN COVER ASSEMBLY 
    Refer to PROCEDURE - Step 37
  77. REMOVE TIMING CHAIN COVER OIL SEAL 
    Refer to PROCEDURE - Step 38
  78. SET NO. 1 CYLINDER TO TDC (COMPRESSION) 
    Refer to PROCEDURE - Step 39
  79. REMOVE OIL PUMP DRIVE CHAIN SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 40
  80. REMOVE CAMSHAFT TIMING GEAR ASSEMBLY 
    Refer to PROCEDURE - Step 41
  81. REMOVE CHAIN SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 42

  82. REMOVE NO. 1 CHAIN TENSIONER ASSEMBLY 
    Refer to PROCEDURE - Step 43
  83. REMOVE CHAIN TENSIONER SLIPPER 

    Refer to PROCEDURE - Step 44

  84. REMOVE NO. 1 CHAIN VIBRATION DAMPER 

    Refer to PROCEDURE - Step 45

  85. REMOVE CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY 
    Refer to PROCEDURE - Step 46
  86. REMOVE TIMING CHAIN COVER ASSEMBLY 
    Refer to PROCEDURE - Step 47
  87. REMOVE FUEL PUMP LIFTER GUIDE 
    Refer to PROCEDURE - Step 50
  88. REMOVE CAMSHAFT HOUSING SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 51
  89. REMOVE CAMSHAFT BEARING CAP 
    Refer to PROCEDURE - Step 52
  90. REMOVE CAMSHAFT 

    Refer to PROCEDURE - Step 53

  91. REMOVE NO. 2 CAMSHAFT 

    Refer to PROCEDURE - Step 54

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

    Refer to PROCEDURE - Step 56

  93. REMOVE VALVE LASH ADJUSTER ASSEMBLY 

    Refer to PROCEDURE - Step 57

  94. REMOVE VALVE STEM CAP 

    Refer to PROCEDURE - Step 58

  95. REMOVE CYLINDER HEAD SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 61
  96. REMOVE CYLINDER HEAD GASKET 
    1. GTY996095Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  97. INSPECT CYLINDER HEAD SET BOLT 

    Refer to PROCEDURE - Step 18

  98. INSPECT CYLINDER HEAD SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 1

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