LEMON Manuals: Even more car manuals for everyone
Home >> Lexus >> 2024 >> NX 250 FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 63 (Engine Intake / Exhaust System - Service Information) >> Exhaust Manifold >> Removal [03/2022 - ] >> Procedure

Removal [03/2022 - ]: Procedure

WARNING: This page is about a different car, the 2025 Lexus NX 350h, 2024 Lexus NX 350h, 2023 Lexus NX 350h, and 2022 Lexus NX 350h. However, it is still accessible from the selected car via links, so may be relevant.
  1. REMOVE NO. 2 ENGINE UNDER COVER ASSEMBLY 

    Refer to PROCEDURE - Step 1

  2. REMOVE ENGINE UNDER COVER HEAT INSULATOR 

    Refer to PROCEDURE - Step 4

  3. REMOVE FRONT EXHAUST PIPE ASSEMBLY (TWC: Rear Catalyst) 
    WARNING:
    • To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.
    1. GTY1077864Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. REMOVE HOOD TO FRONT FENDER SEAL LH 
  5. REMOVE HOOD TO FRONT FENDER SEAL RH 
  6. REMOVE WINDSHIELD WIPER MOTOR AND LINK ASSEMBLY 

    Refer to REMOVAL [11/2021 - ]

  7. REMOVE COWL VENTILATOR SPLASH SHIELD LH 

    Refer to PROCEDURE - Step 7 [11/2021 - 03/2024] , or refer to PROCEDURE - Step 7 [03/2024 - ]

  8. REMOVE COWL VENTILATOR PANEL SUB-ASSEMBLY 

    Refer to PROCEDURE - Step 8 [11/2021 - 03/2024] , or refer to PROCEDURE - Step 8 [03/2024 - ]

  9. REMOVE AIR FUEL RATIO SENSOR (for Sensor 1) 
    Refer to REMOVAL [11/2021 - ]
  10. REMOVE WIRING HARNESS CLAMP BRACKET 
    WARNING:
    • To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.
    1. GTY1077866Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. SEPARATE NO. 1 EXHAUST MANIFOLD HEAT INSULATOR 
    WARNING:
    • To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.
    1. Type A:
      GTY1074194Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Type B:
      GTY1131595Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  12. SEPARATE NO. 1 FRONT FLOOR HEAT INSULATOR 
    WARNING:
    • To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.
    1. GTY1066269Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  13. REMOVE MANIFOLD STAY 
    WARNING:
    • To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.
    1. GTY1080169Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  14. SEPARATE NO. 2 WATER BY-PASS PIPE SUB-ASSEMBLY 
    1. GTY1066282Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  15. SEPARATE FLOW SHUTTING VALVE (WATER BY-PASS HOSE ASSEMBLY) 
    1. GTY1066286Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  16. REMOVE EXHAUST MANIFOLD (TWC: Front Catalyst) 
    WARNING:
    • To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.
    1. GTY1079398Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 No. 1 Front Floor Heat Insulator *2 No. 1 Exhaust Manifold Heat Insulator
      *3 Exhaust Manifold (TWC: Front Catalyst) - -
      1. Remove the 7 nuts and separate the exhaust manifold (TWC: Front Catalyst) from the cylinder head sub-assembly.
      2. Remove the No. 1 front floor heat insulator, No. 1 exhaust manifold heat insulator and exhaust manifold (TWC: Front Catalyst).
  17. REMOVE EXHAUST MANIFOLD TO HEAD GASKET 
    1. GTY999438Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  18. REMOVE NO. 2 EXHAUST MANIFOLD HEAT INSULATOR 
    1. Type A:
      GTY1074221Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Type B:
      GTY1131598Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002