EXHAUST MANIFOLD REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during exhaust manifold assembly RH (TWC: Front Catalyst) and exhaust manifold assembly LH (TWC: Front Catalyst) removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced
Replaced Part or Performed Procedure Necessary Procedure Effect/Inoperative Function when Necessary Procedure not Performed Link

  • Replacement of air fuel ratio sensor

  • Gas leak from exhaust system is repaired

 Inspection After Repair

  • Poor idle, etc.

  • Engine start function, etc.

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CAUTION:


  • B0086SF

    To prevent burns, do not touch the engine, exhaust manifold or other high temperature components while the engine is hot.

  • B0083FX

    To prevent burns, do not touch the engine, exhaust pipe or other high temperature components while the engine is hot.

PROCEDURE


  1. REMOVE BODY MOUNTING PLATE

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  2. REMOVE NO. 1 EXHAUST PIPE SUPPORT BRACKET (for Lower Side)

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  3. REMOVE FRONT EXHAUST PIPE ASSEMBLY (TWC: Rear Catalyst)


    1. B0086CX

      Disconnect the 2 heated oxygen sensor connectors.

    2. Disengage the 2 wire harness clamps.

    3. B00842S

      Remove the 4 bolts, 4 nuts and disconnect the front exhaust pipe assembly (TWC: Rear Catalyst).

    4. Remove the front exhaust pipe assembly (TWC: Rear Catalyst) from the exhaust pipe support.

    5. Remove the 3 gaskets from the front exhaust pipe assembly (TWC: Rear Catalyst).

  4. REMOVE AIR FUEL RATIO SENSOR (for Bank 1)

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  5. REMOVE NO. 1 EXHAUST MANIFOLD HEAT INSULATOR


    1. B00873S

      Remove the 3 bolts and No. 1 exhaust manifold heat insulator from the exhaust manifold assembly RH (TWC: Front Catalyst).

  6. REMOVE EXHAUST MANIFOLD ASSEMBLY RH (TWC: Front Catalyst)


    1. B0088X2

      Using a 12 mm deep socket wrench, remove the 4 nuts and exhaust manifold assembly RH (TWC: Front Catalyst) from the cylinder head sub-assembly RH.

  7. REMOVE EXHAUST MANIFOLD TO HEAD GASKET (for Bank 1)


    1. B0089A8

      Remove the exhaust manifold to head gasket (for Bank 1) from the cylinder head sub-assembly RH.

  8. REMOVE FRONT WHEEL OPENING EXTENSION PAD LH

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  9. REMOVE FRONT WHEEL OPENING EXTENSION PAD RH

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  10. REMOVE NO. 1 ENGINE UNDER COVER

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  11. REMOVE V-BANK COVER SUB-ASSEMBLY

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  12. REMOVE COOL AIR INTAKE DUCT SEAL

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  13. REMOVE AIR FUEL RATIO SENSOR (for Bank 2)

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  14. REMOVE ENGINE OIL LEVEL DIPSTICK GUIDE

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  15. REMOVE NO. 2 EXHAUST MANIFOLD HEAT INSULATOR


    1. B0087MS

      Remove the 3 bolts and No. 2 exhaust manifold heat insulator from the exhaust manifold assembly LH (TWC: Front Catalyst).

  16. REMOVE NO. 2 MANIFOLD STAY


    1. B0088YCC01
      B00888T Bolt
      B0086HX Nut

      Remove the bolt, nut and No. 2 manifold stay from the exhaust manifold assembly LH (TWC: Front Catalyst) and cylinder block sub-assembly.

  17. DISCONNECT NO. 5 WATER BY-PASS HOSE


    1. B00881D

      Disengage the 2 clamps to disconnect the No. 5 water by-pass hose and No. 6 water by-pass hose from the hose clamp.

  18. REMOVE EXHAUST MANIFOLD ASSEMBLY LH (TWC: Front Catalyst)


    1. B0087F8

      Using a 12 mm deep socket wrench, remove the 4 nuts and exhaust manifold assembly LH (TWC: Front Catalyst).

  19. REMOVE EXHAUST MANIFOLD TO HEAD GASKET (for Bank 2)


    1. B0086U2

      Remove the exhaust manifold to head gasket (for Bank 2) from the cylinder head sub-assembly.

  20. REMOVE STUD BOLT

    Tech Tips

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


    1. B00871N

      Using an E8 "TORX" socket wrench, remove the 2 stud bolts from the exhaust manifold assembly LH (TWC: Front Catalyst).