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Home >> Lexus >> 2023 >> NX 250 AWD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical System - Service Information (2 Of 4) >> Cylinder Head Gasket >> Installation [11/2021 - 03/2022] >> Procedure

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

  1. INSTALL CYLINDER HEAD GASKET 
    1. GTY1075975Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *a Lot No. - -
      Front of Engine - -
      1. Clean the cylinder block sub-assembly and cylinder head sub-assembly with solvent.
      2. Place a new cylinder head gasket on the cylinder block sub-assembly as shown in the illustration.
        NOTE:
        • Make sure that the cylinder head gasket is installed in the correct orientation.
        • Remove any oil from the contact surfaces.
  2. INSTALL CYLINDER HEAD SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 19
  3. INSTALL VALVE STEM CAP 
    Refer to PROCEDURE - Step 26
  4. INSTALL VALVE LASH ADJUSTER ASSEMBLY 
    Refer to PROCEDURE - Step 27
  5. INSTALL NO. 1 VALVE ROCKER ARM SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 28
  6. INSTALL NO. 2 CAMSHAFT 
    Refer to PROCEDURE - Step 23
  7. INSTALL CAMSHAFT 
    Refer to PROCEDURE - Step 24
  8. INSTALL CAMSHAFT BEARING CAP 
    Refer to PROCEDURE - Step 25
  9. INSTALL CAMSHAFT HOUSING SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 29
  10. INSTALL FUEL PUMP LIFTER GUIDE 
    Refer to PROCEDURE - Step 30
  11. INSTALL TIMING CHAIN COVER ASSEMBLY 
    Refer to PROCEDURE - Step 33
  12. INSTALL CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY 
    Refer to PROCEDURE - Step 34
  13. SET NO. 1 CYLINDER TO TDC (COMPRESSION) 
    Refer to PROCEDURE - Step 35
  14. INSTALL NO. 1 CHAIN VIBRATION DAMPER 

    Refer to PROCEDURE - Step 36

  15. INSTALL CHAIN TENSIONER SLIPPER 

    Refer to PROCEDURE - Step 37

  16. INSTALL NO. 1 CHAIN TENSIONER ASSEMBLY 
    Refer to PROCEDURE - Step 38
  17. INSTALL CHAIN SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 39
  18. INSTALL CAMSHAFT TIMING GEAR ASSEMBLY 
    Refer to PROCEDURE - Step 40
  19. INSTALL OIL PUMP DRIVE CHAIN SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 41
  20. SET NO. 1 CYLINDER TO TDC (COMPRESSION) 
    Refer to PROCEDURE - Step 42
  21. INSTALL NO. 2 TIMING CHAIN COVER ASSEMBLY 
    Refer to PROCEDURE - Step 43
  22. INSTALL TIMING CHAIN COVER OIL SEAL 
    Refer to PROCEDURE - Step 45
  23. INSTALL SPARK PLUG TUBE GASKET 
    Refer to PROCEDURE - Step 46
  24. INSTALL CYLINDER HEAD COVER SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 47
  25. INSTALL WATER OUTLET PIPE GASKET 
  26. INSTALL WATER BY-PASS OUTLET 
    Refer to PROCEDURE - Step 49
  27. INSTALL WATER OUTLET GASKET 
  28. INSTALL WATER OUTLET 
    Refer to PROCEDURE - Step 51
  29. INSTALL CRANKSHAFT PULLEY ASSEMBLY 
    Refer to PROCEDURE - Step 52
  30. CONNECT NO. 2 WATER BY-PASS HOSE 
  31. CONNECT NO. 1 WATER BY-PASS HOSE 
  32. INSTALL NO. 1 VACUUM PUMP O RING 
    Refer to PROCEDURE - Step 1
  33. INSTALL VACUUM PUMP ASSEMBLY 
    Refer to PROCEDURE - Step 2
  34. INSTALL CAM TIMING CONTROL MOTOR O-RING 
    Refer to PROCEDURE - Step 1
  35. INSTALL CAM TIMING CONTROL MOTOR WITH EDU ASSEMBLY 
    Refer to PROCEDURE - Step 2
  36. INSTALL CAM TIMING OIL CONTROL SOLENOID O-RING 
    Refer to PROCEDURE - Step 1
  37. INSTALL CAM TIMING OIL CONTROL SOLENOID ASSEMBLY 
    Refer to PROCEDURE - Step 2
  38. INSTALL TIMING GEAR COVER INSULATOR 
    Refer to PROCEDURE - Step 70
  39. INSTALL OIL PRESSURE CONTROL VALVE ASSEMBLY 
    Refer to PROCEDURE - Step 1
  40. INSTALL PURGE VALVE (PURGE VSV) 

    Refer to PROCEDURE - Step 1

  41. INSTALL ENGINE OIL LEVEL DIPSTICK GUIDE 
    Refer to PROCEDURE - Step 6
  42. INSTALL IGNITION COIL ASSEMBLY 
    Refer to PROCEDURE - Step 2
  43. INSTALL FUEL INJECTOR SEAL 
    Refer to PROCEDURE - Step 1
  44. INSTALL INJECTOR VIBRATION INSULATOR 
    Refer to PROCEDURE - Step 2
  45. INSTALL C-RING 
    Refer to PROCEDURE - Step 3
  46. INSTALL NO. 1 FUEL INJECTOR BACK-UP RING 
    Refer to PROCEDURE - Step 4
  47. INSTALL NO. 3 FUEL INJECTOR BACK-UP RING 
    Refer to PROCEDURE - Step 5
  48. INSTALL NOZZLE HOLDER CLAMP 
  49. INSTALL DIRECT FUEL INJECTOR ASSEMBLY 
    Refer to PROCEDURE - Step 7
  50. INSTALL FUEL DELIVERY PIPE 
    Refer to PROCEDURE - Step 8
  51. CONNECT WIRE HARNESS 
  52. INSTALL PORT FUEL INJECTOR ASSEMBLY 
    Refer to PROCEDURE - Step 1
  53. INSTALL NO. 5 ENGINE WIRE 
  54. INSTALL INJECTOR VIBRATION INSULATOR 
  55. INSTALL NO. 1 DELIVERY PIPE SPACER 
  56. INSTALL FUEL DELIVERY PIPE SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 5
  57. INSTALL NO. 7 WATER BY-PASS HOSE 
  58. INSTALL FUEL PUMP LIFTER ASSEMBLY 
    Refer to PROCEDURE - Step 1
  59. INSTALL FUEL PUMP SPACER GASKET 
  60. TEMPORARILY INSTALL FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY 
    Refer to PROCEDURE - Step 3
  61. TEMPORARILY INSTALL NO. 1 FUEL PIPE SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 4
  62. INSTALL FUEL (ENGINE ROOM SIDE) PUMP ASSEMBLY 
    Refer to PROCEDURE - Step 5
  63. INSTALL NO. 1 FUEL PIPE SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 6
  64. CONNECT FUEL TUBE SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 7
  65. INSTALL NO. 1 INTAKE MANIFOLD TO HEAD GASKET 
  66. INSTALL INTAKE MANIFOLD 
    Refer to PROCEDURE - Step 4
  67. INSTALL NO. 2 WATER BY-PASS PIPE 
    Refer to PROCEDURE - Step 6
  68. INSTALL NO. 3 WATER BY-PASS PIPE 
    Refer to PROCEDURE - Step 7
  69. SET EGR VALVE ASSEMBLY 
    Refer to PROCEDURE - Step 9
  70. INSTALL NO. 4 WATER BY-PASS HOSE 
  71. INSTALL NO. 1 EGR COOLER GASKET 
    Refer to PROCEDURE - Step 3
  72. INSTALL EGR VALVE GASKET 
    Refer to PROCEDURE - Step 4
  73. INSTALL EGR COOLER ASSEMBLY 
    Refer to PROCEDURE - Step 5
  74. CONNECT NO. 4 WATER BY-PASS HOSE 
  75. CONNECT NO. 3 WATER BY-PASS HOSE 
  76. INSTALL EGR VALVE ASSEMBLY 
    Refer to PROCEDURE - Step 9
  77. INSTALL EGR INLET GASKET 
  78. INSTALL EGR VALVE ADAPTER GASKET 
  79. INSTALL NO. 1 EGR PIPE SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 12
  80. INSTALL THROTTLE BODY GASKET 
    Refer to PROCEDURE - Step 1
  81. CONNECT NO. 5 WATER BY-PASS HOSE 
    Refer to PROCEDURE - Step 2
  82. INSTALL THROTTLE BODY WITH MOTOR ASSEMBLY 
    Refer to PROCEDURE - Step 3
  83. CONNECT NO. 6 WATER BY-PASS HOSE 
    Refer to PROCEDURE - Step 4
  84. INSTALL EXHAUST MANIFOLD TO HEAD GASKET 
  85. INSTALL EXHAUST MANIFOLD (TWC: Front Catalyst) 
    Refer to PROCEDURE - Step 3
  86. INSTALL MANIFOLD STAY 
    Refer to PROCEDURE - Step 4
  87. INSTALL NO. 1 EXHAUST MANIFOLD HEAT INSULATOR 

    Refer to PROCEDURE - Step 6

  88. INSTALL NO. 2 WATER HOSE CLAMP BRACKET 
  89. INSTALL FLOW SHUTTING VALVE (WATER BY-PASS HOSE ASSEMBLY) 

    Refer to PROCEDURE - Step 55

  90. INSTALL NO. 2 WATER BY-PASS PIPE SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 56
  91. INSTALL V-RIBBED BELT TENSIONER ASSEMBLY 
    Refer to PROCEDURE - Step 58
  92. INSTALL NO. 2 ENGINE COVER 

    Refer to PROCEDURE - Step 62

  93. INSTALL COMPRESSOR ASSEMBLY WITH PULLEY 
    Refer to PROCEDURE - Step 2
  94. INSTALL GENERATOR ASSEMBLY 

    Refer to PROCEDURE - Step 1

  95. INSTALL V-RIBBED BELT 
    Refer to PROCEDURE - Step 1
  96. INSTALL ENGINE HANGERS 
    See step  4
  97. REMOVE ENGINE ASSEMBLY FROM ENGINE STAND 

    See step  5