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Home >> Lexus >> 2025 >> NX 250 FWD >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine Mechanical System - Service Information (3 Of 4) >> Engine Unit >> Removal [11/2021 - 03/2022] >> Procedure

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

  1. REMOVE DRIVE SHAFT BEARING BRACKET 
    1. GTY1076670Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *A for 2WD *B for AWD
  2. REMOVE NO. 2 ENGINE COVER 
    1. GTY1076368Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  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 V-RIBBED BELT TENSIONER ASSEMBLY 
    NOTE:
    • Do not apply or add any oil or grease to the belt tensioner to prevent abnormal noises from the belt tensioner pulley, belt squealing, etc.
    • Do not allow oil or grease to adhere to the moving parts of the belt tensioner, as this may cause malfunctions.
    GTY743260Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. GTY1077153Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  7. REMOVE NO. 2 TIMING CHAIN COVER INSULATOR 
    1. GTY1076879Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. REMOVE NO. 2 WATER BY-PASS PIPE SUB-ASSEMBLY 
    1. GTY1077572Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  9. REMOVE FLOW SHUTTING VALVE (WATER BY-PASS HOSE ASSEMBLY) 
    1. GTY1077142Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  10. REMOVE NO. 2 WATER HOSE CLAMP BRACKET 
    1. GTY1077144Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. SEPARATE 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 
    1. GTY1077164Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using an 8 mm socket wrench, remove the bolt and disconnect the No. 3 water by-pass pipe from the intake manifold.
      2. Slide the clip and remove the No. 3 water by-pass pipe from the water outlet.
  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 
    1. GTY1077570Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  39. REMOVE SENSOR WIRE 
    1. GTY1075877Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Disconnect the 4 connectors.
      2. Disengage the 3 clamps.
      3. Using an 8 mm socket wrench, remove the bolt and sensor wire from the water inlet with thermostat sub-assembly.
  40. REMOVE NO. 6 ENGINE WIRE 
    1. GTY997954Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  41. REMOVE FUEL DELIVERY PIPE SUB-ASSEMBLY 
    Refer to PROCEDURE - Step 4
  42. REMOVE NO. 1 DELIVERY PIPE SPACER 

    Refer to PROCEDURE - Step 5

  43. REMOVE INJECTOR VIBRATION INSULATOR 

    Refer to PROCEDURE - Step 6

  44. REMOVE NO. 5 ENGINE WIRE 

    Refer to PROCEDURE - Step 7

  45. REMOVE PORT FUEL INJECTOR ASSEMBLY 
    Refer to PROCEDURE - Step 8
  46. REMOVE FUEL DELIVERY PIPE 
    Refer to PROCEDURE - Step 3
  47. REMOVE DIRECT FUEL INJECTOR ASSEMBLY 
    Refer to PROCEDURE - Step 4
  48. REMOVE NOZZLE HOLDER CLAMP 

    Refer to PROCEDURE - Step 5

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

    Refer to PROCEDURE - Step 7

  51. REMOVE C-RING 

    Refer to PROCEDURE - Step 8

  52. REMOVE INJECTOR VIBRATION INSULATOR 

    Refer to PROCEDURE - Step 9

  53. REMOVE FUEL INJECTOR SEAL 
    Refer to PROCEDURE - Step 10
  54. REMOVE IGNITION COIL ASSEMBLY 
    Refer to PROCEDURE - Step 2
  55. REMOVE ENGINE OIL LEVEL DIPSTICK GUIDE 
    1. GTY1076257Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Remove the engine oil level dipstick.
      2. Using an 8 mm socket wrench, remove the bolt and engine oil level dipstick guide from the camshaft housing sub-assembly.
      3. Remove the O-ring from the engine oil level dipstick guide.
  56. REMOVE NO. 3 EXHAUST MANIFOLD HEAT INSULATOR 
    1. GTY997953Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  57. REMOVE PURGE VALVE (PURGE VSV) 

    Refer to PROCEDURE - Step 3

  58. REMOVE NO. 2 VACUUM SWITCHING VALVE BRACKET 
    1. GTY1076840Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using an 8 mm socket wrench, remove the 2 bolts and No. 2 vacuum switching valve bracket from the camshaft housing sub-assembly.
  59. REMOVE WIRE HARNESS CLAMP BRACKET 
    1. GTY1075257Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using an 8 mm socket wrench, remove the 2 bolts and wire harness clamp bracket from the No. 1 ventilation case.
  60. REMOVE STUD BOLT 
    NOTE:

    If a stud bolt is deformed or its threads are damaged, replace it.
    1. GTY1076228Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using an E8 "TORX" socket wrench, remove the stud bolt from the timing chain cover assembly.
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